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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/heap-manipulation/merge_sort-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:45:24,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:45:24,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:45:24,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 01:45:24,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 01:45:24,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 01:45:24,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 01:45:24,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 01:45:25,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 01:45:25,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 01:45:25,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 01:45:25,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 01:45:25,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:45:25,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:45:25,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:45:25,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:45:25,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:45:25,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:45:25,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:45:25,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:45:25,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:45:25,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:45:25,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:45:25,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:45:25,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 01:45:25,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 01:45:25,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 01:45:25,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 01:45:25,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 01:45:25,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 01:45:25,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:45:25,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:45:25,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:45:25,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:45:25,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:45:25,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:45:25,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:45:25,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:45:25,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:45:25,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:45:25,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:45:25,028 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 01:45:25,044 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:45:25,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:45:25,046 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:45:25,046 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:45:25,047 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:45:25,047 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:45:25,047 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:45:25,047 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:45:25,048 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:45:25,048 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:45:25,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:45:25,049 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:45:25,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:45:25,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:45:25,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:45:25,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:45:25,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:45:25,051 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:45:25,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:45:25,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:45:25,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:45:25,052 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:45:25,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:45:25,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:45:25,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:45:25,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:45:25,054 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:45:25,054 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:45:25,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:45:25,054 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:45:25,103 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:45:25,115 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:45:25,118 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:45:25,120 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:45:25,120 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:45:25,121 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/merge_sort-1.i [2019-09-10 01:45:25,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d724c883/e99ff8940777430f868a53c7250cd2a1/FLAGc55eafa8c [2019-09-10 01:45:25,708 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:45:25,709 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/merge_sort-1.i [2019-09-10 01:45:25,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d724c883/e99ff8940777430f868a53c7250cd2a1/FLAGc55eafa8c [2019-09-10 01:45:26,003 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d724c883/e99ff8940777430f868a53c7250cd2a1 [2019-09-10 01:45:26,014 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:45:26,017 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:45:26,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:45:26,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:45:26,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:45:26,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:45:26" (1/1) ... [2019-09-10 01:45:26,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e165503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:26, skipping insertion in model container [2019-09-10 01:45:26,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:45:26" (1/1) ... [2019-09-10 01:45:26,032 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:45:26,093 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:45:26,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:45:26,570 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:45:26,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:45:26,696 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:45:26,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:26 WrapperNode [2019-09-10 01:45:26,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:45:26,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:45:26,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:45:26,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:45:26,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:26" (1/1) ... [2019-09-10 01:45:26,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:26" (1/1) ... [2019-09-10 01:45:26,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:26" (1/1) ... [2019-09-10 01:45:26,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:26" (1/1) ... [2019-09-10 01:45:26,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:26" (1/1) ... [2019-09-10 01:45:26,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:26" (1/1) ... [2019-09-10 01:45:26,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:26" (1/1) ... [2019-09-10 01:45:26,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:45:26,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:45:26,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:45:26,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:45:26,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:26" (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 [2019-09-10 01:45:26,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:45:26,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:45:26,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-10 01:45:26,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-10 01:45:26,872 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2019-09-10 01:45:26,872 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2019-09-10 01:45:26,872 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_pair [2019-09-10 01:45:26,872 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_sort_core [2019-09-10 01:45:26,872 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_before [2019-09-10 01:45:26,872 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_after [2019-09-10 01:45:26,873 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:45:26,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:45:26,873 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-10 01:45:26,873 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-10 01:45:26,873 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-10 01:45:26,874 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-10 01:45:26,874 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-10 01:45:26,874 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-10 01:45:26,874 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-10 01:45:26,874 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-10 01:45:26,874 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-10 01:45:26,875 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-10 01:45:26,875 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-10 01:45:26,875 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-10 01:45:26,875 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-10 01:45:26,875 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-10 01:45:26,875 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-10 01:45:26,876 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-10 01:45:26,876 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-10 01:45:26,876 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-10 01:45:26,876 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-10 01:45:26,876 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-10 01:45:26,876 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-10 01:45:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-10 01:45:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-10 01:45:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-10 01:45:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-10 01:45:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-10 01:45:26,877 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-10 01:45:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-10 01:45:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-10 01:45:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-10 01:45:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-10 01:45:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-10 01:45:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-10 01:45:26,878 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-10 01:45:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-10 01:45:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-10 01:45:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-10 01:45:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-10 01:45:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-10 01:45:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-10 01:45:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-10 01:45:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-10 01:45:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-10 01:45:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-10 01:45:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-10 01:45:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-10 01:45:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-10 01:45:26,881 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-10 01:45:26,881 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-10 01:45:26,881 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-10 01:45:26,881 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-10 01:45:26,881 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-10 01:45:26,881 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 01:45:26,882 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-10 01:45:26,882 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-10 01:45:26,882 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-10 01:45:26,882 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-10 01:45:26,882 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-10 01:45:26,882 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-10 01:45:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-10 01:45:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-10 01:45:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-10 01:45:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-10 01:45:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-10 01:45:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-10 01:45:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-10 01:45:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-10 01:45:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-10 01:45:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-10 01:45:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-10 01:45:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-10 01:45:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-10 01:45:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-10 01:45:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-10 01:45:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-10 01:45:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-10 01:45:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-10 01:45:26,885 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-10 01:45:26,886 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-10 01:45:26,886 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-10 01:45:26,886 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-10 01:45:26,886 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-10 01:45:26,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-10 01:45:26,886 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-10 01:45:26,887 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-10 01:45:26,887 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-10 01:45:26,887 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-10 01:45:26,887 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-10 01:45:26,887 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-10 01:45:26,887 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-10 01:45:26,887 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-10 01:45:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-10 01:45:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-10 01:45:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-10 01:45:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-10 01:45:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-10 01:45:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-10 01:45:26,888 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-10 01:45:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-10 01:45:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-10 01:45:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-10 01:45:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-10 01:45:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 01:45:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2019-09-10 01:45:26,889 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2019-09-10 01:45:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-10 01:45:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-10 01:45:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure merge_pair [2019-09-10 01:45:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:45:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:45:26,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:45:26,891 INFO L130 BoogieDeclarations]: Found specification of procedure seq_sort_core [2019-09-10 01:45:26,891 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_before [2019-09-10 01:45:26,891 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_after [2019-09-10 01:45:26,891 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:45:26,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 01:45:26,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:45:26,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:45:26,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:45:27,767 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:45:27,768 INFO L283 CfgBuilder]: Removed 33 assume(true) statements. [2019-09-10 01:45:27,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:45:27 BoogieIcfgContainer [2019-09-10 01:45:27,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:45:27,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:45:27,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:45:27,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:45:27,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:45:26" (1/3) ... [2019-09-10 01:45:27,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6474e1a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:45:27, skipping insertion in model container [2019-09-10 01:45:27,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:45:26" (2/3) ... [2019-09-10 01:45:27,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6474e1a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:45:27, skipping insertion in model container [2019-09-10 01:45:27,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:45:27" (3/3) ... [2019-09-10 01:45:27,778 INFO L109 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2019-09-10 01:45:27,789 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:45:27,797 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:45:27,815 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:45:27,852 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:45:27,853 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:45:27,853 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:45:27,853 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:45:27,853 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:45:27,853 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:45:27,854 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:45:27,854 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:45:27,878 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states. [2019-09-10 01:45:27,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-10 01:45:27,890 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:27,891 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:45:27,895 INFO L418 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:27,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:27,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1745780584, now seen corresponding path program 1 times [2019-09-10 01:45:27,904 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:27,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:27,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:27,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:27,994 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:45:28,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:45:28,087 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:45:28,088 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:45:28,088 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:45:28,093 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:45:28,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:45:28,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:45:28,111 INFO L87 Difference]: Start difference. First operand 115 states. Second operand 2 states. [2019-09-10 01:45:28,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:45:28,138 INFO L93 Difference]: Finished difference Result 101 states and 126 transitions. [2019-09-10 01:45:28,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:45:28,140 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-09-10 01:45:28,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:45:28,153 INFO L225 Difference]: With dead ends: 101 [2019-09-10 01:45:28,153 INFO L226 Difference]: Without dead ends: 92 [2019-09-10 01:45:28,155 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 [2019-09-10 01:45:28,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-09-10 01:45:28,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2019-09-10 01:45:28,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-09-10 01:45:28,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 115 transitions. [2019-09-10 01:45:28,205 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 115 transitions. Word has length 13 [2019-09-10 01:45:28,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:45:28,205 INFO L475 AbstractCegarLoop]: Abstraction has 92 states and 115 transitions. [2019-09-10 01:45:28,206 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:45:28,206 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 115 transitions. [2019-09-10 01:45:28,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-10 01:45:28,206 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:28,207 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:45:28,207 INFO L418 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:28,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:28,207 INFO L82 PathProgramCache]: Analyzing trace with hash -746131594, now seen corresponding path program 1 times [2019-09-10 01:45:28,208 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:28,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:28,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:28,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:28,210 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:45:28,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:45:28,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:45:28,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 01:45:28,266 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:45:28,267 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 01:45:28,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 01:45:28,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:45:28,268 INFO L87 Difference]: Start difference. First operand 92 states and 115 transitions. Second operand 3 states. [2019-09-10 01:45:28,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:45:28,293 INFO L93 Difference]: Finished difference Result 99 states and 122 transitions. [2019-09-10 01:45:28,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 01:45:28,293 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-09-10 01:45:28,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:45:28,295 INFO L225 Difference]: With dead ends: 99 [2019-09-10 01:45:28,295 INFO L226 Difference]: Without dead ends: 98 [2019-09-10 01:45:28,296 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 [2019-09-10 01:45:28,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-09-10 01:45:28,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2019-09-10 01:45:28,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-09-10 01:45:28,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 117 transitions. [2019-09-10 01:45:28,308 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 117 transitions. Word has length 14 [2019-09-10 01:45:28,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:45:28,308 INFO L475 AbstractCegarLoop]: Abstraction has 94 states and 117 transitions. [2019-09-10 01:45:28,309 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 01:45:28,309 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 117 transitions. [2019-09-10 01:45:28,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-10 01:45:28,309 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:28,310 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:45:28,310 INFO L418 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:28,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:28,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1965566687, now seen corresponding path program 1 times [2019-09-10 01:45:28,311 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:28,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:28,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:28,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:28,313 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:28,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:45:28,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:45:28,442 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:45:28,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 01:45:28,442 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:45:28,443 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 01:45:28,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 01:45:28,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-10 01:45:28,443 INFO L87 Difference]: Start difference. First operand 94 states and 117 transitions. Second operand 6 states. [2019-09-10 01:45:28,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:45:28,619 INFO L93 Difference]: Finished difference Result 126 states and 157 transitions. [2019-09-10 01:45:28,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 01:45:28,622 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-09-10 01:45:28,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:45:28,624 INFO L225 Difference]: With dead ends: 126 [2019-09-10 01:45:28,624 INFO L226 Difference]: Without dead ends: 126 [2019-09-10 01:45:28,625 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-10 01:45:28,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-09-10 01:45:28,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 96. [2019-09-10 01:45:28,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-09-10 01:45:28,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 119 transitions. [2019-09-10 01:45:28,645 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 119 transitions. Word has length 20 [2019-09-10 01:45:28,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:45:28,646 INFO L475 AbstractCegarLoop]: Abstraction has 96 states and 119 transitions. [2019-09-10 01:45:28,646 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 01:45:28,646 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 119 transitions. [2019-09-10 01:45:28,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-09-10 01:45:28,647 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:28,650 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, 1, 1, 1] [2019-09-10 01:45:28,651 INFO L418 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:28,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:28,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1928157211, now seen corresponding path program 1 times [2019-09-10 01:45:28,652 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:28,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:28,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:28,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:28,656 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:45:28,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 01:45:28,795 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:45:28,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 01:45:28,796 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:45:28,796 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 01:45:28,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 01:45:28,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 01:45:28,797 INFO L87 Difference]: Start difference. First operand 96 states and 119 transitions. Second operand 5 states. [2019-09-10 01:45:29,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:45:29,012 INFO L93 Difference]: Finished difference Result 95 states and 117 transitions. [2019-09-10 01:45:29,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 01:45:29,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-09-10 01:45:29,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:45:29,015 INFO L225 Difference]: With dead ends: 95 [2019-09-10 01:45:29,015 INFO L226 Difference]: Without dead ends: 95 [2019-09-10 01:45:29,015 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-10 01:45:29,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-09-10 01:45:29,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2019-09-10 01:45:29,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2019-09-10 01:45:29,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 117 transitions. [2019-09-10 01:45:29,023 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 117 transitions. Word has length 25 [2019-09-10 01:45:29,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:45:29,024 INFO L475 AbstractCegarLoop]: Abstraction has 95 states and 117 transitions. [2019-09-10 01:45:29,024 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 01:45:29,024 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 117 transitions. [2019-09-10 01:45:29,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-09-10 01:45:29,025 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:29,025 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, 1, 1, 1] [2019-09-10 01:45:29,025 INFO L418 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:29,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:29,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1938652540, now seen corresponding path program 1 times [2019-09-10 01:45:29,026 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:29,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:29,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:29,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:29,028 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:45:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 01:45:29,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:45:29,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 01:45:29,105 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:45:29,105 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 01:45:29,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 01:45:29,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 01:45:29,106 INFO L87 Difference]: Start difference. First operand 95 states and 117 transitions. Second operand 5 states. [2019-09-10 01:45:29,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:45:29,283 INFO L93 Difference]: Finished difference Result 94 states and 115 transitions. [2019-09-10 01:45:29,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 01:45:29,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-09-10 01:45:29,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:45:29,286 INFO L225 Difference]: With dead ends: 94 [2019-09-10 01:45:29,286 INFO L226 Difference]: Without dead ends: 94 [2019-09-10 01:45:29,287 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-10 01:45:29,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2019-09-10 01:45:29,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2019-09-10 01:45:29,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-09-10 01:45:29,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 115 transitions. [2019-09-10 01:45:29,303 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 115 transitions. Word has length 25 [2019-09-10 01:45:29,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:45:29,303 INFO L475 AbstractCegarLoop]: Abstraction has 94 states and 115 transitions. [2019-09-10 01:45:29,304 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 01:45:29,304 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 115 transitions. [2019-09-10 01:45:29,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-09-10 01:45:29,305 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:29,305 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, 1, 1, 1, 1, 1] [2019-09-10 01:45:29,305 INFO L418 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:29,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:29,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1834867831, now seen corresponding path program 1 times [2019-09-10 01:45:29,306 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:29,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:29,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:29,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:29,308 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:45:29,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:45:29,409 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:45:29,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 01:45:29,409 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:45:29,410 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 01:45:29,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 01:45:29,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 01:45:29,411 INFO L87 Difference]: Start difference. First operand 94 states and 115 transitions. Second operand 7 states. [2019-09-10 01:45:29,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:45:29,761 INFO L93 Difference]: Finished difference Result 118 states and 144 transitions. [2019-09-10 01:45:29,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 01:45:29,763 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2019-09-10 01:45:29,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:45:29,764 INFO L225 Difference]: With dead ends: 118 [2019-09-10 01:45:29,764 INFO L226 Difference]: Without dead ends: 118 [2019-09-10 01:45:29,765 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-09-10 01:45:29,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2019-09-10 01:45:29,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 98. [2019-09-10 01:45:29,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-09-10 01:45:29,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 119 transitions. [2019-09-10 01:45:29,772 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 119 transitions. Word has length 27 [2019-09-10 01:45:29,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:45:29,773 INFO L475 AbstractCegarLoop]: Abstraction has 98 states and 119 transitions. [2019-09-10 01:45:29,773 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 01:45:29,773 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 119 transitions. [2019-09-10 01:45:29,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-09-10 01:45:29,774 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:29,774 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, 1, 1, 1, 1, 1] [2019-09-10 01:45:29,774 INFO L418 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:29,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:29,775 INFO L82 PathProgramCache]: Analyzing trace with hash 962077576, now seen corresponding path program 1 times [2019-09-10 01:45:29,775 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:29,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:29,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:29,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:29,777 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:45:29,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:45:29,885 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:45:29,886 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 01:45:29,886 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:45:29,886 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 01:45:29,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 01:45:29,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-10 01:45:29,887 INFO L87 Difference]: Start difference. First operand 98 states and 119 transitions. Second operand 7 states. [2019-09-10 01:45:30,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:45:30,198 INFO L93 Difference]: Finished difference Result 117 states and 142 transitions. [2019-09-10 01:45:30,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 01:45:30,200 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2019-09-10 01:45:30,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:45:30,202 INFO L225 Difference]: With dead ends: 117 [2019-09-10 01:45:30,202 INFO L226 Difference]: Without dead ends: 117 [2019-09-10 01:45:30,203 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-09-10 01:45:30,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2019-09-10 01:45:30,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 102. [2019-09-10 01:45:30,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2019-09-10 01:45:30,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 123 transitions. [2019-09-10 01:45:30,209 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 123 transitions. Word has length 27 [2019-09-10 01:45:30,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:45:30,210 INFO L475 AbstractCegarLoop]: Abstraction has 102 states and 123 transitions. [2019-09-10 01:45:30,210 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 01:45:30,210 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 123 transitions. [2019-09-10 01:45:30,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-09-10 01:45:30,211 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:45:30,211 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, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:45:30,211 INFO L418 AbstractCegarLoop]: === Iteration 8 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:45:30,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:45:30,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1917343693, now seen corresponding path program 1 times [2019-09-10 01:45:30,212 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:45:30,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:30,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:45:30,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:45:30,214 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:45:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:45:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-10 01:45:30,288 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-10 01:45:30,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:45:30 BoogieIcfgContainer [2019-09-10 01:45:30,326 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:45:30,328 INFO L168 Benchmark]: Toolchain (without parser) took 4311.81 ms. Allocated memory was 134.2 MB in the beginning and 259.0 MB in the end (delta: 124.8 MB). Free memory was 88.1 MB in the beginning and 165.9 MB in the end (delta: -77.7 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:30,329 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 134.2 MB. Free memory was 108.6 MB in the beginning and 108.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:45:30,331 INFO L168 Benchmark]: CACSL2BoogieTranslator took 679.52 ms. Allocated memory was 134.2 MB in the beginning and 200.8 MB in the end (delta: 66.6 MB). Free memory was 87.9 MB in the beginning and 161.7 MB in the end (delta: -73.8 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:30,331 INFO L168 Benchmark]: Boogie Preprocessor took 119.48 ms. Allocated memory is still 200.8 MB. Free memory was 161.7 MB in the beginning and 158.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:30,332 INFO L168 Benchmark]: RCFGBuilder took 952.21 ms. Allocated memory is still 200.8 MB. Free memory was 158.1 MB in the beginning and 89.4 MB in the end (delta: 68.7 MB). Peak memory consumption was 68.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:45:30,333 INFO L168 Benchmark]: TraceAbstraction took 2555.10 ms. Allocated memory was 200.8 MB in the beginning and 259.0 MB in the end (delta: 58.2 MB). Free memory was 88.8 MB in the beginning and 165.9 MB in the end (delta: -77.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 01:45:30,343 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 134.2 MB. Free memory was 108.6 MB in the beginning and 108.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 679.52 ms. Allocated memory was 134.2 MB in the beginning and 200.8 MB in the end (delta: 66.6 MB). Free memory was 87.9 MB in the beginning and 161.7 MB in the end (delta: -73.8 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.48 ms. Allocated memory is still 200.8 MB. Free memory was 161.7 MB in the beginning and 158.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 952.21 ms. Allocated memory is still 200.8 MB. Free memory was 158.1 MB in the beginning and 89.4 MB in the end (delta: 68.7 MB). Peak memory consumption was 68.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2555.10 ms. Allocated memory was 200.8 MB in the beginning and 259.0 MB in the end (delta: 58.2 MB). Free memory was 88.8 MB in the beginning and 165.9 MB in the end (delta: -77.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 554]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] struct list *data = ((void *)0); VAL [data={0:0}] [L628] COND TRUE __VERIFIER_nondet_int() [L629] struct node *node = malloc(sizeof *node); VAL [data={0:0}, malloc(sizeof *node)={1:0}, node={1:0}] [L630] COND FALSE !(!node) VAL [data={0:0}, malloc(sizeof *node)={1:0}, node={1:0}] [L632] node->next = node [L633] node->value = __VERIFIER_nondet_int() [L634] struct list *item = malloc(sizeof *item); VAL [data={0:0}, item={-1:0}, malloc(sizeof *item)={-1:0}, malloc(sizeof *node)={1:0}, node={1:0}] [L635] COND FALSE !(!item) VAL [data={0:0}, item={-1:0}, malloc(sizeof *item)={-1:0}, malloc(sizeof *node)={1:0}, node={1:0}] [L637] item->slist = node [L638] item->next = data [L639] data = item VAL [data={-1:0}, item={-1:0}, malloc(sizeof *item)={-1:0}, malloc(sizeof *node)={1:0}, node={1:0}] [L628] COND FALSE !(__VERIFIER_nondet_int()) [L641] COND FALSE !(!data) VAL [data={-1:0}, item={-1:0}, malloc(sizeof *item)={-1:0}, malloc(sizeof *node)={1:0}, node={1:0}] [L643] CALL inspect_before(data) VAL [shape={-1:0}] [L604] COND FALSE !(!(shape)) VAL [shape={-1:0}, shape={-1:0}] [L605] shape->next VAL [shape={-1:0}, shape={-1:0}, shape->next={0:0}] [L605] COND FALSE !(shape->next) [L611] COND FALSE !(!(shape)) VAL [shape={-1:0}, shape={-1:0}] [L612] EXPR shape->next VAL [shape={-1:0}, shape={-1:0}, shape->next={0:0}] [L612] COND FALSE !(!(shape->next == ((void *)0))) [L613] EXPR shape->slist VAL [shape={-1:0}, shape={-1:0}, shape->slist={1:0}] [L613] COND FALSE !(!(shape->slist)) [L614] EXPR shape->slist [L614] EXPR shape->slist->next VAL [shape={-1:0}, shape={-1:0}, shape->slist={1:0}, shape->slist->next={1:0}] [L614] COND TRUE !(shape->slist->next == ((void *)0)) [L614] CALL fail() [L554] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 121 locations, 1 error locations. UNSAFE Result, 2.4s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 728 SDtfs, 274 SDslu, 1641 SDs, 0 SdLazy, 628 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred 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: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 69 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 12040 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 10/10 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...