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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/alternating_list-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:27:31,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:27:31,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:27:31,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 01:27:31,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 01:27:31,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 01:27:31,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 01:27:31,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 01:27:31,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 01:27:31,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 01:27:31,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 01:27:31,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 01:27:31,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:27:31,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:27:31,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:27:31,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:27:31,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:27:31,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:27:31,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:27:31,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:27:31,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:27:31,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:27:31,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:27:31,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:27:31,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-08 01:27:31,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-08 01:27:31,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-08 01:27:31,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-08 01:27:31,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-08 01:27:31,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-08 01:27:31,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 01:27:31,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 01:27:31,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 01:27:31,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 01:27:31,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 01:27:31,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 01:27:31,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 01:27:31,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 01:27:31,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:27:31,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:27:31,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:27:31,983 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 [2019-09-08 01:27:32,020 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:27:32,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:27:32,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:27:32,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:27:32,027 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:27:32,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:27:32,028 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:27:32,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:27:32,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:27:32,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:27:32,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:27:32,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:27:32,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:27:32,030 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:27:32,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:27:32,031 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:27:32,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:27:32,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:27:32,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:27:32,032 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:27:32,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:27:32,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:27:32,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:27:32,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:27:32,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:27:32,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:27:32,033 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:27:32,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:27:32,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:27:32,062 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:27:32,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:27:32,085 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:27:32,087 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:27:32,087 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:27:32,088 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/alternating_list-2.i [2019-09-08 01:27:32,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/325223333/6ab67be7799c438b8d081aa8525d3ff6/FLAG5e701788b [2019-09-08 01:27:32,645 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:27:32,649 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/alternating_list-2.i [2019-09-08 01:27:32,663 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/325223333/6ab67be7799c438b8d081aa8525d3ff6/FLAG5e701788b [2019-09-08 01:27:32,984 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/325223333/6ab67be7799c438b8d081aa8525d3ff6 [2019-09-08 01:27:32,994 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:27:32,995 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:27:32,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:27:32,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:27:33,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:27:33,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:27:32" (1/1) ... [2019-09-08 01:27:33,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e02a95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:27:33, skipping insertion in model container [2019-09-08 01:27:33,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:27:32" (1/1) ... [2019-09-08 01:27:33,011 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:27:33,057 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:27:33,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:27:33,505 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:27:33,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:27:33,632 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:27:33,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:27:33 WrapperNode [2019-09-08 01:27:33,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:27:33,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:27:33,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:27:33,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:27:33,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:27:33" (1/1) ... [2019-09-08 01:27:33,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:27:33" (1/1) ... [2019-09-08 01:27:33,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:27:33" (1/1) ... [2019-09-08 01:27:33,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:27:33" (1/1) ... [2019-09-08 01:27:33,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:27:33" (1/1) ... [2019-09-08 01:27:33,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:27:33" (1/1) ... [2019-09-08 01:27:33,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:27:33" (1/1) ... [2019-09-08 01:27:33,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:27:33,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:27:33,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:27:33,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:27:33,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:27:33" (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 [2019-09-08 01:27:33,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:27:33,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:27:33,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-08 01:27:33,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-08 01:27:33,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-09-08 01:27:33,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-09-08 01:27:33,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-09-08 01:27:33,770 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-08 01:27:33,770 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:27:33,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:27:33,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-08 01:27:33,771 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-08 01:27:33,771 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-08 01:27:33,771 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-08 01:27:33,771 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-08 01:27:33,772 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-08 01:27:33,772 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-08 01:27:33,772 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-08 01:27:33,772 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-08 01:27:33,772 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-08 01:27:33,773 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-08 01:27:33,773 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-08 01:27:33,773 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-08 01:27:33,773 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-08 01:27:33,773 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-08 01:27:33,773 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-08 01:27:33,773 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-08 01:27:33,774 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-08 01:27:33,774 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-08 01:27:33,774 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-09-08 01:27:33,774 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-09-08 01:27:33,774 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-09-08 01:27:33,775 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-08 01:27:33,775 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-08 01:27:33,775 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-08 01:27:33,775 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-08 01:27:33,775 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-08 01:27:33,775 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-08 01:27:33,775 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-08 01:27:33,776 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-08 01:27:33,776 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-08 01:27:33,776 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-08 01:27:33,776 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-08 01:27:33,776 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-08 01:27:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-08 01:27:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-08 01:27:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-08 01:27:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-08 01:27:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-08 01:27:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-08 01:27:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-08 01:27:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-08 01:27:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-08 01:27:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-08 01:27:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-08 01:27:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-08 01:27:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-08 01:27:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-08 01:27:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-08 01:27:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-08 01:27:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-08 01:27:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-08 01:27:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-08 01:27:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-08 01:27:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-08 01:27:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-08 01:27:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-08 01:27:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-08 01:27:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-08 01:27:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-08 01:27:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-08 01:27:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-08 01:27:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-08 01:27:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-08 01:27:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-08 01:27:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-08 01:27:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-08 01:27:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-08 01:27:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-08 01:27:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-08 01:27:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-08 01:27:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-08 01:27:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-08 01:27:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-08 01:27:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-08 01:27:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-08 01:27:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-08 01:27:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-08 01:27:33,783 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-08 01:27:33,783 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-08 01:27:33,783 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-08 01:27:33,783 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-08 01:27:33,783 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-08 01:27:33,783 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-08 01:27:33,783 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-08 01:27:33,784 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-08 01:27:33,784 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-08 01:27:33,784 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-08 01:27:33,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-08 01:27:33,784 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-08 01:27:33,784 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-08 01:27:33,784 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-08 01:27:33,785 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-08 01:27:33,785 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-08 01:27:33,785 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-08 01:27:33,785 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-08 01:27:33,785 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-08 01:27:33,785 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-08 01:27:33,785 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-08 01:27:33,785 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-08 01:27:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-08 01:27:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-08 01:27:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-08 01:27:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-08 01:27:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-08 01:27:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-08 01:27:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-08 01:27:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-08 01:27:33,786 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-08 01:27:33,787 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:27:33,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-08 01:27:33,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 01:27:33,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-08 01:27:33,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-08 01:27:33,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 01:27:33,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:27:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:27:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:27:34,205 INFO L684 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-08 01:27:34,376 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:27:34,376 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-08 01:27:34,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:27:34 BoogieIcfgContainer [2019-09-08 01:27:34,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:27:34,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:27:34,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:27:34,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:27:34,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:27:32" (1/3) ... [2019-09-08 01:27:34,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60cded59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:27:34, skipping insertion in model container [2019-09-08 01:27:34,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:27:33" (2/3) ... [2019-09-08 01:27:34,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60cded59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:27:34, skipping insertion in model container [2019-09-08 01:27:34,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:27:34" (3/3) ... [2019-09-08 01:27:34,386 INFO L109 eAbstractionObserver]: Analyzing ICFG alternating_list-2.i [2019-09-08 01:27:34,396 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:27:34,404 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:27:34,421 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:27:34,446 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:27:34,447 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:27:34,447 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:27:34,448 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:27:34,448 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:27:34,448 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:27:34,448 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:27:34,448 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:27:34,448 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:27:34,464 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2019-09-08 01:27:34,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-08 01:27:34,470 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:27:34,471 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:27:34,473 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:27:34,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:27:34,477 INFO L82 PathProgramCache]: Analyzing trace with hash 209903222, now seen corresponding path program 1 times [2019-09-08 01:27:34,479 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:27:34,479 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:27:34,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:27:34,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:27:34,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:27:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:27:34,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:27:34,613 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:27:34,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 01:27:34,617 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 01:27:34,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 01:27:34,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:27:34,636 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2019-09-08 01:27:34,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:27:34,658 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-09-08 01:27:34,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 01:27:34,659 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-09-08 01:27:34,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:27:34,668 INFO L225 Difference]: With dead ends: 52 [2019-09-08 01:27:34,668 INFO L226 Difference]: Without dead ends: 23 [2019-09-08 01:27:34,672 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:27:34,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-09-08 01:27:34,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-09-08 01:27:34,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-09-08 01:27:34,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-09-08 01:27:34,708 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 15 [2019-09-08 01:27:34,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:27:34,709 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-09-08 01:27:34,709 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 01:27:34,709 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-09-08 01:27:34,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-08 01:27:34,710 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:27:34,711 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:27:34,711 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:27:34,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:27:34,712 INFO L82 PathProgramCache]: Analyzing trace with hash 919137993, now seen corresponding path program 1 times [2019-09-08 01:27:34,712 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:27:34,712 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:27:34,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:27:34,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:27:34,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:27:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:27:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:27:34,797 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:27:34,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 01:27:34,801 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 01:27:34,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 01:27:34,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 01:27:34,802 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 3 states. [2019-09-08 01:27:34,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:27:34,835 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2019-09-08 01:27:34,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 01:27:34,836 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-09-08 01:27:34,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:27:34,837 INFO L225 Difference]: With dead ends: 51 [2019-09-08 01:27:34,837 INFO L226 Difference]: Without dead ends: 36 [2019-09-08 01:27:34,839 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 01:27:34,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-09-08 01:27:34,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2019-09-08 01:27:34,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-09-08 01:27:34,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2019-09-08 01:27:34,847 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 16 [2019-09-08 01:27:34,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:27:34,847 INFO L475 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2019-09-08 01:27:34,848 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 01:27:34,848 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2019-09-08 01:27:34,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-08 01:27:34,849 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:27:34,849 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:27:34,849 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:27:34,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:27:34,850 INFO L82 PathProgramCache]: Analyzing trace with hash 919131049, now seen corresponding path program 1 times [2019-09-08 01:27:34,850 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:27:34,850 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:27:34,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:27:34,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:27:34,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:27:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:27:34,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:27:34,923 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:27:34,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 01:27:34,924 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 01:27:34,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 01:27:34,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 01:27:34,925 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 5 states. [2019-09-08 01:27:35,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:27:35,058 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2019-09-08 01:27:35,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 01:27:35,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-09-08 01:27:35,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:27:35,061 INFO L225 Difference]: With dead ends: 61 [2019-09-08 01:27:35,061 INFO L226 Difference]: Without dead ends: 46 [2019-09-08 01:27:35,062 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-08 01:27:35,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-09-08 01:27:35,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 35. [2019-09-08 01:27:35,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-09-08 01:27:35,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2019-09-08 01:27:35,069 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 16 [2019-09-08 01:27:35,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:27:35,069 INFO L475 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2019-09-08 01:27:35,069 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 01:27:35,070 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2019-09-08 01:27:35,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-08 01:27:35,070 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:27:35,071 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:27:35,071 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:27:35,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:27:35,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1446652468, now seen corresponding path program 1 times [2019-09-08 01:27:35,071 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:27:35,072 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:27:35,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:27:35,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:27:35,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:27:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:27:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:27:35,201 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:27:35,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:27:35 BoogieIcfgContainer [2019-09-08 01:27:35,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:27:35,241 INFO L168 Benchmark]: Toolchain (without parser) took 2244.99 ms. Allocated memory was 141.0 MB in the beginning and 228.6 MB in the end (delta: 87.6 MB). Free memory was 87.4 MB in the beginning and 187.2 MB in the end (delta: -99.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-08 01:27:35,242 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 141.0 MB. Free memory was 107.2 MB in the beginning and 107.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 01:27:35,243 INFO L168 Benchmark]: CACSL2BoogieTranslator took 636.89 ms. Allocated memory was 141.0 MB in the beginning and 201.3 MB in the end (delta: 60.3 MB). Free memory was 87.2 MB in the beginning and 166.0 MB in the end (delta: -78.9 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2019-09-08 01:27:35,244 INFO L168 Benchmark]: Boogie Preprocessor took 62.70 ms. Allocated memory is still 201.3 MB. Free memory was 166.0 MB in the beginning and 163.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-09-08 01:27:35,245 INFO L168 Benchmark]: RCFGBuilder took 681.25 ms. Allocated memory is still 201.3 MB. Free memory was 163.6 MB in the beginning and 120.5 MB in the end (delta: 43.2 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. [2019-09-08 01:27:35,246 INFO L168 Benchmark]: TraceAbstraction took 860.03 ms. Allocated memory was 201.3 MB in the beginning and 228.6 MB in the end (delta: 27.3 MB). Free memory was 119.9 MB in the beginning and 187.2 MB in the end (delta: -67.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-08 01:27:35,250 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 141.0 MB. Free memory was 107.2 MB in the beginning and 107.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 636.89 ms. Allocated memory was 141.0 MB in the beginning and 201.3 MB in the end (delta: 60.3 MB). Free memory was 87.2 MB in the beginning and 166.0 MB in the end (delta: -78.9 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.70 ms. Allocated memory is still 201.3 MB. Free memory was 166.0 MB in the beginning and 163.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 681.25 ms. Allocated memory is still 201.3 MB. Free memory was 163.6 MB in the beginning and 120.5 MB in the end (delta: 43.2 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 860.03 ms. Allocated memory was 201.3 MB in the beginning and 228.6 MB in the end (delta: 27.3 MB). Free memory was 119.9 MB in the beginning and 187.2 MB in the end (delta: -67.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 562]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] int flag = 1; [L522] List a = (List) malloc(sizeof(struct node)); VAL [a={10:0}, flag=1, malloc(sizeof(struct node))={10:0}] [L523] COND FALSE !(a == 0) VAL [a={10:0}, flag=1, malloc(sizeof(struct node))={10:0}] [L524] List t; [L525] List p = a; VAL [a={10:0}, flag=1, malloc(sizeof(struct node))={10:0}, p={10:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] COND TRUE \read(flag) [L528] p->h = 2 [L529] flag = 0 VAL [a={10:0}, flag=0, malloc(sizeof(struct node))={10:0}, p={10:0}] [L534] t = (List) malloc(sizeof(struct node)) VAL [a={10:0}, flag=0, malloc(sizeof(struct node))={10:0}, malloc(sizeof(struct node))={6:0}, p={10:0}, t={6:0}] [L535] COND FALSE !(t == 0) VAL [a={10:0}, flag=0, malloc(sizeof(struct node))={10:0}, malloc(sizeof(struct node))={6:0}, p={10:0}, t={6:0}] [L536] p->n = t [L537] EXPR p->n [L537] p = p->n [L526] COND FALSE !(__VERIFIER_nondet_int()) [L539] p->h = 3 [L540] p = a [L541] flag = 1 VAL [a={10:0}, flag=1, malloc(sizeof(struct node))={10:0}, malloc(sizeof(struct node))={6:0}, p={10:0}, t={6:0}] [L542] EXPR p->h VAL [a={10:0}, flag=1, malloc(sizeof(struct node))={10:0}, malloc(sizeof(struct node))={6:0}, p={10:0}, p->h=2, t={6:0}] [L542] COND TRUE p->h != 3 [L543] COND TRUE \read(flag) [L544] flag = 0 [L545] EXPR p->h VAL [a={10:0}, flag=0, malloc(sizeof(struct node))={10:0}, malloc(sizeof(struct node))={6:0}, p={10:0}, p->h=2, t={6:0}] [L545] COND TRUE p->h != 1 [L562] __VERIFIER_error() VAL [a={10:0}, flag=0, malloc(sizeof(struct node))={10:0}, malloc(sizeof(struct node))={6:0}, p={10:0}, t={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 51 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 93 SDtfs, 24 SDslu, 71 SDs, 0 SdLazy, 35 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1126 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...