/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-data/quick_sort_split.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:31:52,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:31:52,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:31:52,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:31:52,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:31:52,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:31:52,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:31:52,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:31:52,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:31:52,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:31:52,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:31:52,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:31:52,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:31:52,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:31:52,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:31:52,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:31:52,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:31:52,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:31:52,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:31:52,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:31:52,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:31:52,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:31:52,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:31:52,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:31:52,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 11:31:52,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 11:31:52,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 11:31:52,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 11:31:52,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 11:31:52,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 11:31:52,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 11:31:52,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 11:31:52,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 11:31:52,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 11:31:52,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 11:31:52,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 11:31:52,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 11:31:52,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 11:31:52,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:31:52,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:31:52,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:31:52,893 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 11:31:52,932 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:31:52,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:31:52,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:31:52,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:31:52,935 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:31:52,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:31:52,938 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:31:52,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:31:52,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:31:52,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:31:52,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:31:52,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:31:52,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:31:52,939 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:31:52,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:31:52,940 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:31:52,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:31:52,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:31:52,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:31:52,941 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:31:52,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:31:52,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:31:52,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:31:52,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:31:52,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:31:52,943 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:31:52,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:52,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:31:52,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:31:52,944 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 11:31:53,226 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:31:53,244 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:31:53,249 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:31:53,250 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:31:53,251 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:31:53,252 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/quick_sort_split.i [2020-07-20 11:31:53,322 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e216ce1a0/5dc8bc9514ee49cdb645328981156c85/FLAG9ce5e3d03 [2020-07-20 11:31:53,916 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:31:53,917 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-data/quick_sort_split.i [2020-07-20 11:31:53,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e216ce1a0/5dc8bc9514ee49cdb645328981156c85/FLAG9ce5e3d03 [2020-07-20 11:31:54,205 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e216ce1a0/5dc8bc9514ee49cdb645328981156c85 [2020-07-20 11:31:54,213 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:31:54,215 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:31:54,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:31:54,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:31:54,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:31:54,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:31:54" (1/1) ... [2020-07-20 11:31:54,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7802ee1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:54, skipping insertion in model container [2020-07-20 11:31:54,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:31:54" (1/1) ... [2020-07-20 11:31:54,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:31:54,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:31:54,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:31:54,681 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:31:54,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:31:54,787 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:31:54,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:54 WrapperNode [2020-07-20 11:31:54,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:31:54,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:31:54,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:31:54,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:31:54,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:54" (1/1) ... [2020-07-20 11:31:54,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:54" (1/1) ... [2020-07-20 11:31:54,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:54" (1/1) ... [2020-07-20 11:31:54,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:54" (1/1) ... [2020-07-20 11:31:54,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:54" (1/1) ... [2020-07-20 11:31:54,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:54" (1/1) ... [2020-07-20 11:31:54,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:54" (1/1) ... [2020-07-20 11:31:54,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:31:54,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:31:54,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:31:54,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:31:54,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:31:54,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:31:54,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:31:54,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-20 11:31:54,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-20 11:31:54,931 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_list [2020-07-20 11:31:54,931 INFO L138 BoogieDeclarations]: Found implementation of procedure create_list [2020-07-20 11:31:54,931 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:31:54,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:31:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:31:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-20 11:31:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-20 11:31:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-20 11:31:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-20 11:31:54,932 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-20 11:31:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-20 11:31:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-20 11:31:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-20 11:31:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-20 11:31:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-20 11:31:54,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-20 11:31:54,934 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-20 11:31:54,934 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-20 11:31:54,934 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-20 11:31:54,934 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-20 11:31:54,934 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-20 11:31:54,934 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-20 11:31:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-20 11:31:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-20 11:31:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-20 11:31:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-20 11:31:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-20 11:31:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-20 11:31:54,935 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-20 11:31:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-20 11:31:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-20 11:31:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-20 11:31:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-20 11:31:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-20 11:31:54,936 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-20 11:31:54,937 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-20 11:31:54,937 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-20 11:31:54,937 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-20 11:31:54,937 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-20 11:31:54,937 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-20 11:31:54,937 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-20 11:31:54,937 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-20 11:31:54,937 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-20 11:31:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-20 11:31:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-20 11:31:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-20 11:31:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-20 11:31:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-20 11:31:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-20 11:31:54,938 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-20 11:31:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-20 11:31:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-20 11:31:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-20 11:31:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-20 11:31:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-20 11:31:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-20 11:31:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-20 11:31:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 11:31:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 11:31:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-20 11:31:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 11:31:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-20 11:31:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-20 11:31:54,941 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-20 11:31:54,941 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-20 11:31:54,941 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-20 11:31:54,941 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 11:31:54,941 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-20 11:31:54,941 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-20 11:31:54,942 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-20 11:31:54,942 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 11:31:54,942 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-20 11:31:54,942 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-20 11:31:54,942 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-20 11:31:54,942 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-20 11:31:54,942 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-20 11:31:54,943 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-20 11:31:54,943 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-20 11:31:54,943 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-20 11:31:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-20 11:31:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-20 11:31:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-20 11:31:54,944 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-20 11:31:54,945 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-20 11:31:54,945 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-20 11:31:54,945 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-20 11:31:54,945 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-20 11:31:54,946 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-20 11:31:54,946 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-20 11:31:54,946 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-20 11:31:54,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-20 11:31:54,946 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-20 11:31:54,946 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-20 11:31:54,946 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-20 11:31:54,947 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-20 11:31:54,947 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-20 11:31:54,947 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-20 11:31:54,947 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-20 11:31:54,947 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-20 11:31:54,947 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-20 11:31:54,947 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-20 11:31:54,947 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-20 11:31:54,948 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-20 11:31:54,948 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-20 11:31:54,948 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-20 11:31:54,948 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-20 11:31:54,948 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-20 11:31:54,948 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-20 11:31:54,948 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-20 11:31:54,948 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-20 11:31:54,949 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_list [2020-07-20 11:31:54,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 11:31:54,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 11:31:54,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 11:31:54,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 11:31:54,950 INFO L130 BoogieDeclarations]: Found specification of procedure create_list [2020-07-20 11:31:54,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 11:31:54,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-20 11:31:54,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 11:31:54,952 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:31:54,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 11:31:54,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:31:54,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:31:55,448 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:31:55,448 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-20 11:31:55,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:31:55 BoogieIcfgContainer [2020-07-20 11:31:55,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:31:55,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:31:55,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:31:55,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:31:55,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:31:54" (1/3) ... [2020-07-20 11:31:55,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a60079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:31:55, skipping insertion in model container [2020-07-20 11:31:55,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:54" (2/3) ... [2020-07-20 11:31:55,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a60079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:31:55, skipping insertion in model container [2020-07-20 11:31:55,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:31:55" (3/3) ... [2020-07-20 11:31:55,461 INFO L109 eAbstractionObserver]: Analyzing ICFG quick_sort_split.i [2020-07-20 11:31:55,472 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:31:55,480 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-07-20 11:31:55,491 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-07-20 11:31:55,519 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:31:55,519 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:31:55,519 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:31:55,519 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:31:55,520 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:31:55,520 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:31:55,520 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:31:55,520 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:31:55,538 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-07-20 11:31:55,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 11:31:55,545 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:31:55,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:31:55,546 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:31:55,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:31:55,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1851020699, now seen corresponding path program 1 times [2020-07-20 11:31:55,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:31:55,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150312238] [2020-07-20 11:31:55,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:31:55,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 11:31:55,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:31:55,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:31:55,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:31:55,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150312238] [2020-07-20 11:31:55,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:31:55,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 11:31:55,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888534108] [2020-07-20 11:31:55,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 11:31:55,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:31:55,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 11:31:55,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:31:55,866 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2020-07-20 11:31:55,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:31:55,904 INFO L93 Difference]: Finished difference Result 57 states and 77 transitions. [2020-07-20 11:31:55,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 11:31:55,906 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-07-20 11:31:55,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:31:55,930 INFO L225 Difference]: With dead ends: 57 [2020-07-20 11:31:55,931 INFO L226 Difference]: Without dead ends: 32 [2020-07-20 11:31:55,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:31:55,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-20 11:31:55,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-07-20 11:31:55,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-20 11:31:55,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-07-20 11:31:55,991 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 16 [2020-07-20 11:31:55,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:31:55,991 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-07-20 11:31:55,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 11:31:55,992 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-07-20 11:31:55,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 11:31:55,994 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:31:55,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:31:56,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:56,214 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:31:56,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:31:56,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1239240901, now seen corresponding path program 1 times [2020-07-20 11:31:56,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:31:56,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058032662] [2020-07-20 11:31:56,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:31:56,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:31:56,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:31:56,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:31:56,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:31:56,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058032662] [2020-07-20 11:31:56,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:31:56,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:31:56,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591048247] [2020-07-20 11:31:56,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:31:56,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:31:56,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:31:56,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:31:56,363 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 3 states. [2020-07-20 11:31:56,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:31:56,378 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2020-07-20 11:31:56,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:31:56,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-20 11:31:56,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:31:56,380 INFO L225 Difference]: With dead ends: 38 [2020-07-20 11:31:56,380 INFO L226 Difference]: Without dead ends: 28 [2020-07-20 11:31:56,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:31:56,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-20 11:31:56,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-07-20 11:31:56,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-20 11:31:56,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-07-20 11:31:56,388 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 17 [2020-07-20 11:31:56,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:31:56,389 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-07-20 11:31:56,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:31:56,389 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-07-20 11:31:56,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 11:31:56,390 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:31:56,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:31:56,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:56,605 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:31:56,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:31:56,606 INFO L82 PathProgramCache]: Analyzing trace with hash -238280333, now seen corresponding path program 1 times [2020-07-20 11:31:56,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:31:56,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388540286] [2020-07-20 11:31:56,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:31:56,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:31:56,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:31:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:31:56,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:31:56,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388540286] [2020-07-20 11:31:56,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:31:56,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:31:56,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009637383] [2020-07-20 11:31:56,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:31:56,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:31:56,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:31:56,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:31:56,741 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 3 states. [2020-07-20 11:31:56,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:31:56,748 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-07-20 11:31:56,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:31:56,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-07-20 11:31:56,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:31:56,749 INFO L225 Difference]: With dead ends: 29 [2020-07-20 11:31:56,749 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 11:31:56,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:31:56,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 11:31:56,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 11:31:56,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 11:31:56,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 11:31:56,751 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-07-20 11:31:56,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:31:56,752 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 11:31:56,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:31:56,752 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 11:31:56,752 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 11:31:56,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:56,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 11:31:57,040 INFO L271 CegarLoopResult]: At program point L576(line 576) the Hoare annotation is: true [2020-07-20 11:31:57,040 INFO L271 CegarLoopResult]: At program point L576-1(lines 571 577) the Hoare annotation is: true [2020-07-20 11:31:57,041 INFO L271 CegarLoopResult]: At program point L574(line 574) the Hoare annotation is: true [2020-07-20 11:31:57,041 INFO L268 CegarLoopResult]: For program point L573(lines 573 576) no Hoare annotation was computed. [2020-07-20 11:31:57,041 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 577) no Hoare annotation was computed. [2020-07-20 11:31:57,041 INFO L268 CegarLoopResult]: For program point L571-3(lines 571 577) no Hoare annotation was computed. [2020-07-20 11:31:57,041 INFO L268 CegarLoopResult]: For program point create_listEXIT(lines 569 579) no Hoare annotation was computed. [2020-07-20 11:31:57,041 INFO L271 CegarLoopResult]: At program point create_listENTRY(lines 569 579) the Hoare annotation is: true [2020-07-20 11:31:57,042 INFO L268 CegarLoopResult]: For program point create_listFINAL(lines 569 579) no Hoare annotation was computed. [2020-07-20 11:31:57,042 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:31:57,042 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:31:57,042 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:31:57,042 INFO L268 CegarLoopResult]: For program point __bswap_32ENTRY(lines 64 68) no Hoare annotation was computed. [2020-07-20 11:31:57,042 INFO L268 CegarLoopResult]: For program point __bswap_32FINAL(lines 64 68) no Hoare annotation was computed. [2020-07-20 11:31:57,042 INFO L268 CegarLoopResult]: For program point __bswap_32EXIT(lines 64 68) no Hoare annotation was computed. [2020-07-20 11:31:57,043 INFO L268 CegarLoopResult]: For program point __bswap_64ENTRY(lines 69 73) no Hoare annotation was computed. [2020-07-20 11:31:57,043 INFO L268 CegarLoopResult]: For program point __bswap_64FINAL(lines 69 73) no Hoare annotation was computed. [2020-07-20 11:31:57,043 INFO L268 CegarLoopResult]: For program point __bswap_64EXIT(lines 69 73) no Hoare annotation was computed. [2020-07-20 11:31:57,043 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:31:57,043 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 11:31:57,043 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:31:57,044 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:31:57,044 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 580 602) no Hoare annotation was computed. [2020-07-20 11:31:57,044 INFO L268 CegarLoopResult]: For program point L597-1(lines 580 602) no Hoare annotation was computed. [2020-07-20 11:31:57,044 INFO L268 CegarLoopResult]: For program point L597-2(lines 580 602) no Hoare annotation was computed. [2020-07-20 11:31:57,044 INFO L268 CegarLoopResult]: For program point L593(lines 593 594) no Hoare annotation was computed. [2020-07-20 11:31:57,044 INFO L268 CegarLoopResult]: For program point L593-2(lines 593 594) no Hoare annotation was computed. [2020-07-20 11:31:57,044 INFO L264 CegarLoopResult]: At program point L585-2(lines 585 591) the Hoare annotation is: (and (= 0 main_~high~0.offset) (= 0 main_~low~0.offset) (= 0 main_~high~0.base) (= 0 main_~low~0.base)) [2020-07-20 11:31:57,045 INFO L268 CegarLoopResult]: For program point L581(line 581) no Hoare annotation was computed. [2020-07-20 11:31:57,045 INFO L268 CegarLoopResult]: For program point L598(lines 598 599) no Hoare annotation was computed. [2020-07-20 11:31:57,045 INFO L268 CegarLoopResult]: For program point L598-2(lines 598 599) no Hoare annotation was computed. [2020-07-20 11:31:57,045 INFO L268 CegarLoopResult]: For program point L594(line 594) no Hoare annotation was computed. [2020-07-20 11:31:57,045 INFO L268 CegarLoopResult]: For program point L586(line 586) no Hoare annotation was computed. [2020-07-20 11:31:57,045 INFO L268 CegarLoopResult]: For program point L586-2(line 586) no Hoare annotation was computed. [2020-07-20 11:31:57,046 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 599) no Hoare annotation was computed. [2020-07-20 11:31:57,046 INFO L268 CegarLoopResult]: For program point L599(line 599) no Hoare annotation was computed. [2020-07-20 11:31:57,046 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 594) no Hoare annotation was computed. [2020-07-20 11:31:57,046 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 580 602) the Hoare annotation is: true [2020-07-20 11:31:57,046 INFO L268 CegarLoopResult]: For program point L592-1(lines 580 602) no Hoare annotation was computed. [2020-07-20 11:31:57,046 INFO L268 CegarLoopResult]: For program point append_to_listEXIT(lines 562 568) no Hoare annotation was computed. [2020-07-20 11:31:57,047 INFO L271 CegarLoopResult]: At program point append_to_listENTRY(lines 562 568) the Hoare annotation is: true [2020-07-20 11:31:57,047 INFO L268 CegarLoopResult]: For program point append_to_listFINAL(lines 562 568) no Hoare annotation was computed. [2020-07-20 11:31:57,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:31:57 BoogieIcfgContainer [2020-07-20 11:31:57,067 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:31:57,070 INFO L168 Benchmark]: Toolchain (without parser) took 2854.67 ms. Allocated memory was 138.9 MB in the beginning and 237.0 MB in the end (delta: 98.0 MB). Free memory was 102.1 MB in the beginning and 122.5 MB in the end (delta: -20.5 MB). Peak memory consumption was 77.6 MB. Max. memory is 7.1 GB. [2020-07-20 11:31:57,071 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 11:31:57,072 INFO L168 Benchmark]: CACSL2BoogieTranslator took 571.80 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 101.6 MB in the beginning and 169.6 MB in the end (delta: -68.0 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-07-20 11:31:57,073 INFO L168 Benchmark]: Boogie Preprocessor took 67.77 ms. Allocated memory is still 203.9 MB. Free memory was 169.6 MB in the beginning and 166.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-07-20 11:31:57,074 INFO L168 Benchmark]: RCFGBuilder took 596.06 ms. Allocated memory is still 203.9 MB. Free memory was 166.6 MB in the beginning and 120.6 MB in the end (delta: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 7.1 GB. [2020-07-20 11:31:57,075 INFO L168 Benchmark]: TraceAbstraction took 1613.34 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 119.9 MB in the beginning and 122.5 MB in the end (delta: -2.6 MB). Peak memory consumption was 30.4 MB. Max. memory is 7.1 GB. [2020-07-20 11:31:57,079 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 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 571.80 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 101.6 MB in the beginning and 169.6 MB in the end (delta: -68.0 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.77 ms. Allocated memory is still 203.9 MB. Free memory was 169.6 MB in the beginning and 166.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 596.06 ms. Allocated memory is still 203.9 MB. Free memory was 166.6 MB in the beginning and 120.6 MB in the end (delta: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1613.34 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 119.9 MB in the beginning and 122.5 MB in the end (delta: -2.6 MB). Peak memory consumption was 30.4 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 && 0 == low) && 0 == high) && 0 == low - 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: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 14 SDslu, 42 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 22 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 1268 SizeOfPredicates, 4 NumberOfNonLiveVariables, 280 ConjunctsInSsa, 11 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...