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-ext3-properties/sll_circular_traversal-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:03:25,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:03:25,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:03:25,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:03:25,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:03:25,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:03:25,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:03:25,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:03:25,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:03:25,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:03:25,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:03:25,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:03:25,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:03:25,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:03:25,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:03:25,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:03:25,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:03:25,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:03:25,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:03:25,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:03:25,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:03:25,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:03:25,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:03:25,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:03:25,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:03:25,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:03:25,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:03:25,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:03:25,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:03:25,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:03:25,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:03:25,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:03:25,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:03:25,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:03:25,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:03:25,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:03:25,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:03:25,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:03:25,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:03:25,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:03:25,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:03:25,120 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 [2019-09-20 13:03:25,134 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:03:25,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:03:25,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:03:25,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:03:25,136 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:03:25,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:03:25,137 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:03:25,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:03:25,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:03:25,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:03:25,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:03:25,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:03:25,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:03:25,138 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:03:25,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:03:25,139 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:03:25,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:03:25,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:03:25,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:03:25,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:03:25,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:03:25,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:03:25,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:03:25,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:03:25,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:03:25,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:03:25,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:03:25,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:03:25,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:03:25,170 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:03:25,181 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:03:25,185 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:03:25,186 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:03:25,187 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:03:25,188 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_circular_traversal-1.i [2019-09-20 13:03:25,252 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f24cdf64/6297b56394d1463d9ad09befbf80ea62/FLAG893e12ab6 [2019-09-20 13:03:25,826 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:03:25,829 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_circular_traversal-1.i [2019-09-20 13:03:25,852 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f24cdf64/6297b56394d1463d9ad09befbf80ea62/FLAG893e12ab6 [2019-09-20 13:03:26,094 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f24cdf64/6297b56394d1463d9ad09befbf80ea62 [2019-09-20 13:03:26,106 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:03:26,109 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:03:26,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:03:26,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:03:26,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:03:26,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:03:26" (1/1) ... [2019-09-20 13:03:26,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77d71a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:03:26, skipping insertion in model container [2019-09-20 13:03:26,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:03:26" (1/1) ... [2019-09-20 13:03:26,124 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:03:26,171 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:03:26,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:03:26,641 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:03:26,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:03:26,785 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:03:26,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:03:26 WrapperNode [2019-09-20 13:03:26,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:03:26,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:03:26,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:03:26,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:03:26,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:03:26" (1/1) ... [2019-09-20 13:03:26,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:03:26" (1/1) ... [2019-09-20 13:03:26,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:03:26" (1/1) ... [2019-09-20 13:03:26,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:03:26" (1/1) ... [2019-09-20 13:03:26,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:03:26" (1/1) ... [2019-09-20 13:03:26,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:03:26" (1/1) ... [2019-09-20 13:03:26,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:03:26" (1/1) ... [2019-09-20 13:03:26,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:03:26,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:03:26,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:03:26,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:03:26,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:03:26" (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 [2019-09-20 13:03:26,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:03:26,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:03:26,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-20 13:03:26,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-20 13:03:26,927 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-20 13:03:26,927 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-09-20 13:03:26,927 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:03:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:03:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-20 13:03:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-20 13:03:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-20 13:03:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-20 13:03:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-20 13:03:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-20 13:03:26,929 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-20 13:03:26,929 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-20 13:03:26,929 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-20 13:03:26,929 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-20 13:03:26,929 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-20 13:03:26,929 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-20 13:03:26,930 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-20 13:03:26,930 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-20 13:03:26,930 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-20 13:03:26,930 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-20 13:03:26,930 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-20 13:03:26,930 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-20 13:03:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-20 13:03:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-20 13:03:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-20 13:03:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-20 13:03:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-20 13:03:26,931 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-20 13:03:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-20 13:03:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-20 13:03:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-20 13:03:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-20 13:03:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-20 13:03:26,932 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-20 13:03:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-20 13:03:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-20 13:03:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-20 13:03:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-20 13:03:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-20 13:03:26,933 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-20 13:03:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-20 13:03:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-20 13:03:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-20 13:03:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-20 13:03:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-20 13:03:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-20 13:03:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-20 13:03:26,935 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-20 13:03:26,935 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-20 13:03:26,935 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-20 13:03:26,935 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-20 13:03:26,935 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-20 13:03:26,935 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-20 13:03:26,936 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-20 13:03:26,936 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-20 13:03:26,936 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-20 13:03:26,936 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:03:26,936 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-20 13:03:26,936 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-20 13:03:26,936 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:03:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-20 13:03:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-20 13:03:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-20 13:03:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-20 13:03:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-20 13:03:26,937 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-20 13:03:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-20 13:03:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-20 13:03:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-20 13:03:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-20 13:03:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-20 13:03:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-20 13:03:26,939 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-20 13:03:26,939 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-20 13:03:26,939 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-20 13:03:26,939 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-20 13:03:26,939 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-20 13:03:26,939 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-20 13:03:26,940 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-20 13:03:26,940 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-20 13:03:26,940 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-20 13:03:26,940 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-20 13:03:26,940 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-20 13:03:26,940 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-20 13:03:26,940 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-20 13:03:26,941 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-20 13:03:26,941 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-20 13:03:26,941 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-20 13:03:26,941 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-20 13:03:26,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-20 13:03:26,941 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-20 13:03:26,942 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-20 13:03:26,942 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-20 13:03:26,942 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-20 13:03:26,942 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-20 13:03:26,942 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-20 13:03:26,942 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-20 13:03:26,942 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-20 13:03:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-20 13:03:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-20 13:03:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-20 13:03:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-20 13:03:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-20 13:03:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-20 13:03:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-20 13:03:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-20 13:03:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-20 13:03:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-20 13:03:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-20 13:03:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-20 13:03:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-09-20 13:03:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:03:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:03:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:03:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:03:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:03:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:03:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:03:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:03:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:03:27,286 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-20 13:03:27,458 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:03:27,459 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-20 13:03:27,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:03:27 BoogieIcfgContainer [2019-09-20 13:03:27,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:03:27,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:03:27,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:03:27,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:03:27,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:03:26" (1/3) ... [2019-09-20 13:03:27,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7822eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:03:27, skipping insertion in model container [2019-09-20 13:03:27,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:03:26" (2/3) ... [2019-09-20 13:03:27,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7822eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:03:27, skipping insertion in model container [2019-09-20 13:03:27,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:03:27" (3/3) ... [2019-09-20 13:03:27,469 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_circular_traversal-1.i [2019-09-20 13:03:27,479 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:03:27,488 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:03:27,506 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:03:27,537 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:03:27,537 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:03:27,538 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:03:27,538 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:03:27,538 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:03:27,538 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:03:27,539 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:03:27,539 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:03:27,539 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:03:27,557 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2019-09-20 13:03:27,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-20 13:03:27,564 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:03:27,564 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:03:27,566 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:03:27,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:03:27,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1054550836, now seen corresponding path program 1 times [2019-09-20 13:03:27,573 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:03:27,574 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:03:27,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:27,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:03:27,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:03:27,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:03:27,755 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:03:27,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:03:27,759 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:03:27,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:03:27,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:03:27,777 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2019-09-20 13:03:27,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:03:27,804 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-09-20 13:03:27,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:03:27,806 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-09-20 13:03:27,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:03:27,815 INFO L225 Difference]: With dead ends: 53 [2019-09-20 13:03:27,816 INFO L226 Difference]: Without dead ends: 26 [2019-09-20 13:03:27,819 INFO L636 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 [2019-09-20 13:03:27,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-09-20 13:03:27,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-09-20 13:03:27,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-09-20 13:03:27,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-09-20 13:03:27,863 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 18 [2019-09-20 13:03:27,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:03:27,863 INFO L475 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-09-20 13:03:27,864 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:03:27,864 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-09-20 13:03:27,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-20 13:03:27,865 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:03:27,865 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:03:27,866 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:03:27,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:03:27,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1615663296, now seen corresponding path program 1 times [2019-09-20 13:03:27,866 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:03:27,867 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:03:27,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:27,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:03:27,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:03:28,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:03:28,013 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:03:28,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:03:28,015 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:03:28,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:03:28,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:03:28,016 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2019-09-20 13:03:28,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:03:28,076 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2019-09-20 13:03:28,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:03:28,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-09-20 13:03:28,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:03:28,078 INFO L225 Difference]: With dead ends: 42 [2019-09-20 13:03:28,078 INFO L226 Difference]: Without dead ends: 29 [2019-09-20 13:03:28,079 INFO L636 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 [2019-09-20 13:03:28,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-20 13:03:28,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-09-20 13:03:28,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-20 13:03:28,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2019-09-20 13:03:28,086 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 18 [2019-09-20 13:03:28,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:03:28,087 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2019-09-20 13:03:28,087 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:03:28,087 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2019-09-20 13:03:28,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-09-20 13:03:28,088 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:03:28,088 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:03:28,088 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:03:28,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:03:28,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1504540904, now seen corresponding path program 1 times [2019-09-20 13:03:28,089 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:03:28,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:03:28,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:28,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:03:28,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:03:28,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:03:28,251 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:03:28,251 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:03:28,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:03:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:03:28,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-20 13:03:28,387 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:03:28,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:03:28,429 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:03:28,429 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-09-20 13:03:28,429 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:03:28,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:03:28,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:03:28,433 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 6 states. [2019-09-20 13:03:28,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:03:28,493 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2019-09-20 13:03:28,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:03:28,494 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2019-09-20 13:03:28,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:03:28,495 INFO L225 Difference]: With dead ends: 45 [2019-09-20 13:03:28,495 INFO L226 Difference]: Without dead ends: 32 [2019-09-20 13:03:28,496 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:03:28,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-09-20 13:03:28,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-09-20 13:03:28,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-09-20 13:03:28,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-09-20 13:03:28,502 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2019-09-20 13:03:28,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:03:28,502 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-09-20 13:03:28,502 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:03:28,503 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-09-20 13:03:28,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-20 13:03:28,503 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:03:28,504 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:03:28,504 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:03:28,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:03:28,504 INFO L82 PathProgramCache]: Analyzing trace with hash 469324224, now seen corresponding path program 2 times [2019-09-20 13:03:28,505 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:03:28,505 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:03:28,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:28,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:03:28,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:03:28,636 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:03:28,636 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:03:28,636 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:03:28,724 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-20 13:03:28,776 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-20 13:03:28,777 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-20 13:03:28,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-20 13:03:28,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:03:28,807 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:03:28,812 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:03:28,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-09-20 13:03:28,813 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:03:28,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:03:28,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:03:28,814 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 7 states. [2019-09-20 13:03:28,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:03:28,897 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2019-09-20 13:03:28,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:03:28,898 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2019-09-20 13:03:28,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:03:28,900 INFO L225 Difference]: With dead ends: 48 [2019-09-20 13:03:28,900 INFO L226 Difference]: Without dead ends: 35 [2019-09-20 13:03:28,901 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:03:28,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-20 13:03:28,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2019-09-20 13:03:28,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-09-20 13:03:28,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2019-09-20 13:03:28,914 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 24 [2019-09-20 13:03:28,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:03:28,914 INFO L475 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2019-09-20 13:03:28,914 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:03:28,914 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2019-09-20 13:03:28,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-09-20 13:03:28,915 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:03:28,915 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:03:28,916 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:03:28,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:03:28,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1488102936, now seen corresponding path program 3 times [2019-09-20 13:03:28,917 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:03:28,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:03:28,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:28,925 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-20 13:03:28,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:28,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:03:29,064 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:03:29,065 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:03:29,065 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:03:29,150 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-20 13:03:29,218 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-09-20 13:03:29,218 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-20 13:03:29,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 37 conjunts are in the unsatisfiable core [2019-09-20 13:03:29,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:03:29,304 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-09-20 13:03:29,305 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:29,311 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:29,312 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:03:29,312 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2019-09-20 13:03:29,355 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-20 13:03:29,357 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2019-09-20 13:03:29,357 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:29,365 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:29,366 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:03:29,366 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:29, output treesize:11 [2019-09-20 13:03:29,444 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-09-20 13:03:29,445 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:29,446 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:29,447 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:03:29,447 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-09-20 13:03:29,465 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-20 13:03:29,470 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:03:29,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2019-09-20 13:03:29,470 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-20 13:03:29,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-20 13:03:29,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2019-09-20 13:03:29,472 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 15 states. [2019-09-20 13:03:29,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:03:29,965 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2019-09-20 13:03:29,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-20 13:03:29,965 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2019-09-20 13:03:29,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:03:29,966 INFO L225 Difference]: With dead ends: 53 [2019-09-20 13:03:29,966 INFO L226 Difference]: Without dead ends: 40 [2019-09-20 13:03:29,967 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2019-09-20 13:03:29,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-09-20 13:03:29,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2019-09-20 13:03:29,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-09-20 13:03:29,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2019-09-20 13:03:29,974 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 27 [2019-09-20 13:03:29,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:03:29,974 INFO L475 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2019-09-20 13:03:29,974 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-20 13:03:29,974 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2019-09-20 13:03:29,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-09-20 13:03:29,975 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:03:29,975 INFO L407 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:03:29,976 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:03:29,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:03:29,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1506888183, now seen corresponding path program 1 times [2019-09-20 13:03:29,976 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:03:29,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:03:29,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:29,980 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-20 13:03:29,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:03:30,556 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2019-09-20 13:03:30,952 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:03:30,952 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:03:30,953 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:03:31,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:03:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:03:31,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 61 conjunts are in the unsatisfiable core [2019-09-20 13:03:31,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:03:31,180 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-09-20 13:03:31,180 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:31,188 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:31,188 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:03:31,189 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2019-09-20 13:03:31,280 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2019-09-20 13:03:31,280 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:31,301 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:31,308 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2019-09-20 13:03:31,308 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:31,329 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:31,333 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:03:31,349 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:31,367 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:31,368 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 41 [2019-09-20 13:03:31,369 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:31,411 INFO L567 ElimStorePlain]: treesize reduction 16, result has 72.4 percent of original size [2019-09-20 13:03:31,412 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:03:31,413 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:76, output treesize:32 [2019-09-20 13:03:31,494 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:31,494 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 38 [2019-09-20 13:03:31,495 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:31,498 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:31,499 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:03:31,551 INFO L567 ElimStorePlain]: treesize reduction 12, result has 85.2 percent of original size [2019-09-20 13:03:31,573 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:31,574 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 34 [2019-09-20 13:03:31,575 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:31,638 INFO L567 ElimStorePlain]: treesize reduction 16, result has 80.2 percent of original size [2019-09-20 13:03:31,651 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:31,652 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2019-09-20 13:03:31,653 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:31,690 INFO L567 ElimStorePlain]: treesize reduction 16, result has 75.8 percent of original size [2019-09-20 13:03:31,691 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:31,693 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-09-20 13:03:31,694 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:66, output treesize:50 [2019-09-20 13:03:31,694 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:31,743 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:31,794 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:31,986 INFO L392 ElimStorePlain]: Different costs {2=[|#memory_$Pointer$.base|, |#memory_$Pointer$.offset|], 5=[|v_#memory_$Pointer$.offset_18|, |v_#memory_$Pointer$.base_18|, |v_#memory_int_25|]} [2019-09-20 13:03:31,991 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:03:32,020 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:32,022 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:03:32,054 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:32,067 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:32,067 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2019-09-20 13:03:32,068 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:32,079 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-20 13:03:32,079 INFO L172 IndexEqualityManager]: detected equality via solver [2019-09-20 13:03:32,080 INFO L392 ElimStorePlain]: Different costs {0=[v_arrayElimCell_9], 1=[v_arrayElimCell_8]} [2019-09-20 13:03:32,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:03:32,284 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: This case should habe been handled by DER at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:192) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.(DerPreprocessor.java:95) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:291) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:256) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:461) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:371) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-09-20 13:03:32,291 INFO L168 Benchmark]: Toolchain (without parser) took 6182.64 ms. Allocated memory was 138.9 MB in the beginning and 322.4 MB in the end (delta: 183.5 MB). Free memory was 85.4 MB in the beginning and 221.9 MB in the end (delta: -136.5 MB). Peak memory consumption was 47.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:03:32,297 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 105.1 MB in the beginning and 104.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:03:32,298 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.22 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 85.2 MB in the beginning and 161.9 MB in the end (delta: -76.7 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:03:32,298 INFO L168 Benchmark]: Boogie Preprocessor took 72.05 ms. Allocated memory is still 199.2 MB. Free memory was 161.9 MB in the beginning and 159.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2019-09-20 13:03:32,299 INFO L168 Benchmark]: RCFGBuilder took 600.67 ms. Allocated memory is still 199.2 MB. Free memory was 159.3 MB in the beginning and 114.9 MB in the end (delta: 44.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:03:32,301 INFO L168 Benchmark]: TraceAbstraction took 4827.18 ms. Allocated memory was 199.2 MB in the beginning and 322.4 MB in the end (delta: 123.2 MB). Free memory was 114.9 MB in the beginning and 221.9 MB in the end (delta: -107.0 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:03:32,309 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 138.9 MB. Free memory was 105.1 MB in the beginning and 104.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 677.22 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 85.2 MB in the beginning and 161.9 MB in the end (delta: -76.7 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.05 ms. Allocated memory is still 199.2 MB. Free memory was 161.9 MB in the beginning and 159.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 600.67 ms. Allocated memory is still 199.2 MB. Free memory was 159.3 MB in the beginning and 114.9 MB in the end (delta: 44.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4827.18 ms. Allocated memory was 199.2 MB in the beginning and 322.4 MB in the end (delta: 123.2 MB). Free memory was 114.9 MB in the beginning and 221.9 MB in the end (delta: -107.0 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: This case should habe been handled by DER de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: This case should habe been handled by DER: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...