/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 12:03:27,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 12:03:27,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 12:03:27,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 12:03:27,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 12:03:27,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 12:03:27,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 12:03:27,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 12:03:27,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 12:03:27,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 12:03:27,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 12:03:27,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 12:03:27,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 12:03:27,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 12:03:27,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 12:03:27,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 12:03:27,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 12:03:27,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 12:03:27,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 12:03:27,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 12:03:27,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 12:03:27,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 12:03:27,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 12:03:27,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 12:03:27,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 12:03:27,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 12:03:27,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 12:03:27,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 12:03:27,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 12:03:27,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 12:03:27,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 12:03:27,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 12:03:27,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 12:03:27,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 12:03:27,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 12:03:27,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 12:03:27,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 12:03:27,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 12:03:27,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 12:03:27,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 12:03:27,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 12:03:27,132 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 12:03:27,165 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 12:03:27,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 12:03:27,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 12:03:27,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 12:03:27,171 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 12:03:27,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 12:03:27,171 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 12:03:27,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 12:03:27,172 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 12:03:27,172 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 12:03:27,172 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 12:03:27,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 12:03:27,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 12:03:27,172 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 12:03:27,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 12:03:27,173 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 12:03:27,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 12:03:27,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 12:03:27,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 12:03:27,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 12:03:27,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 12:03:27,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:03:27,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 12:03:27,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 12:03:27,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 12:03:27,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 12:03:27,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 12:03:27,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 12:03:27,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 12:03:27,179 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 12:03:27,469 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 12:03:27,482 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 12:03:27,486 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 12:03:27,487 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 12:03:27,488 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 12:03:27,488 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-07-17 12:03:27,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c638193c/a634ed83d94046a0948ab9b7e35266b1/FLAG57e7fd624 [2020-07-17 12:03:28,069 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 12:03:28,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-07-17 12:03:28,082 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c638193c/a634ed83d94046a0948ab9b7e35266b1/FLAG57e7fd624 [2020-07-17 12:03:28,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c638193c/a634ed83d94046a0948ab9b7e35266b1 [2020-07-17 12:03:28,404 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 12:03:28,407 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 12:03:28,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 12:03:28,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 12:03:28,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 12:03:28,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:03:28" (1/1) ... [2020-07-17 12:03:28,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ea6240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:03:28, skipping insertion in model container [2020-07-17 12:03:28,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:03:28" (1/1) ... [2020-07-17 12:03:28,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 12:03:28,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 12:03:28,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:03:28,914 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 12:03:28,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:03:29,015 INFO L208 MainTranslator]: Completed translation [2020-07-17 12:03:29,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:03:29 WrapperNode [2020-07-17 12:03:29,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 12:03:29,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 12:03:29,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 12:03:29,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 12:03:29,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:03:29" (1/1) ... [2020-07-17 12:03:29,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:03:29" (1/1) ... [2020-07-17 12:03:29,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:03:29" (1/1) ... [2020-07-17 12:03:29,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:03:29" (1/1) ... [2020-07-17 12:03:29,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:03:29" (1/1) ... [2020-07-17 12:03:29,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:03:29" (1/1) ... [2020-07-17 12:03:29,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:03:29" (1/1) ... [2020-07-17 12:03:29,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 12:03:29,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 12:03:29,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 12:03:29,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 12:03:29,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:03:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:03:29,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 12:03:29,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 12:03:29,162 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 12:03:29,163 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-17 12:03:29,163 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-17 12:03:29,163 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-17 12:03:29,163 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-17 12:03:29,163 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-17 12:03:29,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-17 12:03:29,163 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-17 12:03:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-17 12:03:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-17 12:03:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-17 12:03:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-17 12:03:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-17 12:03:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-17 12:03:29,165 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-17 12:03:29,165 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-17 12:03:29,165 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-17 12:03:29,165 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-17 12:03:29,165 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-17 12:03:29,165 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-17 12:03:29,166 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-17 12:03:29,166 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-17 12:03:29,166 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-17 12:03:29,166 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-17 12:03:29,166 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-17 12:03:29,166 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-17 12:03:29,166 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-17 12:03:29,167 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-17 12:03:29,167 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-17 12:03:29,167 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-17 12:03:29,167 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-17 12:03:29,167 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-17 12:03:29,167 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-17 12:03:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-17 12:03:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-17 12:03:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-17 12:03:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-17 12:03:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-17 12:03:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-17 12:03:29,168 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-17 12:03:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-17 12:03:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-17 12:03:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-17 12:03:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-17 12:03:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-17 12:03:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-17 12:03:29,169 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-17 12:03:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-17 12:03:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-17 12:03:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-17 12:03:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-17 12:03:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 12:03:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-17 12:03:29,171 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-17 12:03:29,171 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-17 12:03:29,171 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-17 12:03:29,171 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-17 12:03:29,171 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-17 12:03:29,171 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-17 12:03:29,171 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-17 12:03:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 12:03:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-17 12:03:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-17 12:03:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-17 12:03:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-17 12:03:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-17 12:03:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-17 12:03:29,173 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-17 12:03:29,173 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-17 12:03:29,173 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-17 12:03:29,173 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-17 12:03:29,173 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-17 12:03:29,173 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-17 12:03:29,174 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-17 12:03:29,174 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-17 12:03:29,174 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-17 12:03:29,174 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-17 12:03:29,174 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-17 12:03:29,174 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-17 12:03:29,174 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-17 12:03:29,175 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-17 12:03:29,175 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-17 12:03:29,175 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-17 12:03:29,175 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-17 12:03:29,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-17 12:03:29,175 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-17 12:03:29,175 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-17 12:03:29,176 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-17 12:03:29,176 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-17 12:03:29,176 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-17 12:03:29,176 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-17 12:03:29,176 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-17 12:03:29,176 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-17 12:03:29,177 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-17 12:03:29,177 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-17 12:03:29,177 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-17 12:03:29,177 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-17 12:03:29,177 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-17 12:03:29,177 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-17 12:03:29,177 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-17 12:03:29,178 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-17 12:03:29,178 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-17 12:03:29,178 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-17 12:03:29,178 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-17 12:03:29,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 12:03:29,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 12:03:29,178 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 12:03:29,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 12:03:29,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-17 12:03:29,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-17 12:03:29,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 12:03:29,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 12:03:29,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 12:03:29,896 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 12:03:29,897 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-07-17 12:03:29,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:03:29 BoogieIcfgContainer [2020-07-17 12:03:29,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 12:03:29,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 12:03:29,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 12:03:29,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 12:03:29,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 12:03:28" (1/3) ... [2020-07-17 12:03:29,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1e4206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:03:29, skipping insertion in model container [2020-07-17 12:03:29,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:03:29" (2/3) ... [2020-07-17 12:03:29,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1e4206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:03:29, skipping insertion in model container [2020-07-17 12:03:29,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:03:29" (3/3) ... [2020-07-17 12:03:29,911 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2020-07-17 12:03:29,922 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 12:03:29,931 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-07-17 12:03:29,947 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-07-17 12:03:29,973 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 12:03:29,973 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 12:03:29,973 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 12:03:29,973 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 12:03:29,974 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 12:03:29,974 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 12:03:29,974 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 12:03:29,974 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 12:03:30,002 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-07-17 12:03:30,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-17 12:03:30,008 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:03:30,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:03:30,010 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:03:30,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:03:30,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1861454184, now seen corresponding path program 1 times [2020-07-17 12:03:30,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:03:30,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466229798] [2020-07-17 12:03:30,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:03:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:30,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:03:30,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466229798] [2020-07-17 12:03:30,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:03:30,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:03:30,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765651505] [2020-07-17 12:03:30,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:03:30,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:03:30,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:03:30,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:03:30,278 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-07-17 12:03:30,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:03:30,569 INFO L93 Difference]: Finished difference Result 186 states and 302 transitions. [2020-07-17 12:03:30,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 12:03:30,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-07-17 12:03:30,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:03:30,582 INFO L225 Difference]: With dead ends: 186 [2020-07-17 12:03:30,582 INFO L226 Difference]: Without dead ends: 99 [2020-07-17 12:03:30,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:03:30,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-07-17 12:03:30,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 81. [2020-07-17 12:03:30,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-17 12:03:30,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-07-17 12:03:30,633 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 8 [2020-07-17 12:03:30,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:03:30,634 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-07-17 12:03:30,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:03:30,634 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-07-17 12:03:30,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-17 12:03:30,635 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:03:30,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:03:30,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 12:03:30,636 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:03:30,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:03:30,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1461031906, now seen corresponding path program 1 times [2020-07-17 12:03:30,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:03:30,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397551898] [2020-07-17 12:03:30,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:03:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:30,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:03:30,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397551898] [2020-07-17 12:03:30,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:03:30,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:03:30,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407282473] [2020-07-17 12:03:30,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:03:30,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:03:30,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:03:30,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:03:30,724 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 4 states. [2020-07-17 12:03:30,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:03:30,872 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-07-17 12:03:30,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 12:03:30,873 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-07-17 12:03:30,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:03:30,874 INFO L225 Difference]: With dead ends: 84 [2020-07-17 12:03:30,874 INFO L226 Difference]: Without dead ends: 82 [2020-07-17 12:03:30,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:03:30,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-17 12:03:30,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-07-17 12:03:30,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-07-17 12:03:30,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-07-17 12:03:30,886 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 14 [2020-07-17 12:03:30,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:03:30,886 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-07-17 12:03:30,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:03:30,887 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-07-17 12:03:30,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-17 12:03:30,887 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:03:30,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:03:30,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 12:03:30,888 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:03:30,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:03:30,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1461033828, now seen corresponding path program 1 times [2020-07-17 12:03:30,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:03:30,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909038969] [2020-07-17 12:03:30,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:03:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:30,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:03:30,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909038969] [2020-07-17 12:03:30,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:03:30,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 12:03:30,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181816247] [2020-07-17 12:03:30,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 12:03:30,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:03:30,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 12:03:30,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:03:30,962 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 5 states. [2020-07-17 12:03:31,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:03:31,183 INFO L93 Difference]: Finished difference Result 138 states and 153 transitions. [2020-07-17 12:03:31,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 12:03:31,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-17 12:03:31,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:03:31,186 INFO L225 Difference]: With dead ends: 138 [2020-07-17 12:03:31,186 INFO L226 Difference]: Without dead ends: 136 [2020-07-17 12:03:31,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 12:03:31,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-07-17 12:03:31,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 84. [2020-07-17 12:03:31,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-07-17 12:03:31,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2020-07-17 12:03:31,196 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 14 [2020-07-17 12:03:31,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:03:31,197 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2020-07-17 12:03:31,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 12:03:31,197 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2020-07-17 12:03:31,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-17 12:03:31,198 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:03:31,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:03:31,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 12:03:31,198 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:03:31,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:03:31,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1462880870, now seen corresponding path program 1 times [2020-07-17 12:03:31,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:03:31,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419535562] [2020-07-17 12:03:31,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:03:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:31,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:03:31,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419535562] [2020-07-17 12:03:31,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:03:31,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 12:03:31,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853782441] [2020-07-17 12:03:31,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 12:03:31,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:03:31,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 12:03:31,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:03:31,307 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand 5 states. [2020-07-17 12:03:31,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:03:31,530 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-07-17 12:03:31,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 12:03:31,531 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-17 12:03:31,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:03:31,533 INFO L225 Difference]: With dead ends: 84 [2020-07-17 12:03:31,533 INFO L226 Difference]: Without dead ends: 82 [2020-07-17 12:03:31,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:03:31,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-17 12:03:31,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-07-17 12:03:31,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-07-17 12:03:31,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2020-07-17 12:03:31,555 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 14 [2020-07-17 12:03:31,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:03:31,555 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2020-07-17 12:03:31,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 12:03:31,555 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2020-07-17 12:03:31,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-17 12:03:31,556 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:03:31,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:03:31,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 12:03:31,557 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:03:31,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:03:31,558 INFO L82 PathProgramCache]: Analyzing trace with hash 177734485, now seen corresponding path program 1 times [2020-07-17 12:03:31,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:03:31,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348710985] [2020-07-17 12:03:31,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:03:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:31,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:03:31,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348710985] [2020-07-17 12:03:31,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:03:31,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 12:03:31,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178216622] [2020-07-17 12:03:31,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 12:03:31,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:03:31,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 12:03:31,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:03:31,650 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand 5 states. [2020-07-17 12:03:31,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:03:31,878 INFO L93 Difference]: Finished difference Result 199 states and 221 transitions. [2020-07-17 12:03:31,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 12:03:31,879 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-07-17 12:03:31,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:03:31,880 INFO L225 Difference]: With dead ends: 199 [2020-07-17 12:03:31,880 INFO L226 Difference]: Without dead ends: 132 [2020-07-17 12:03:31,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 12:03:31,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-07-17 12:03:31,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 81. [2020-07-17 12:03:31,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-17 12:03:31,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-07-17 12:03:31,897 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 19 [2020-07-17 12:03:31,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:03:31,897 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-07-17 12:03:31,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 12:03:31,898 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-07-17 12:03:31,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-17 12:03:31,898 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:03:31,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:03:31,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 12:03:31,899 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:03:31,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:03:31,903 INFO L82 PathProgramCache]: Analyzing trace with hash -631612141, now seen corresponding path program 1 times [2020-07-17 12:03:31,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:03:31,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522076634] [2020-07-17 12:03:31,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:03:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:32,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:03:32,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522076634] [2020-07-17 12:03:32,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:03:32,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 12:03:32,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790189103] [2020-07-17 12:03:32,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 12:03:32,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:03:32,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 12:03:32,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 12:03:32,029 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 6 states. [2020-07-17 12:03:32,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:03:32,252 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2020-07-17 12:03:32,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 12:03:32,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-07-17 12:03:32,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:03:32,254 INFO L225 Difference]: With dead ends: 126 [2020-07-17 12:03:32,254 INFO L226 Difference]: Without dead ends: 122 [2020-07-17 12:03:32,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-17 12:03:32,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-07-17 12:03:32,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 77. [2020-07-17 12:03:32,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-17 12:03:32,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2020-07-17 12:03:32,262 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 19 [2020-07-17 12:03:32,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:03:32,262 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2020-07-17 12:03:32,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 12:03:32,263 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2020-07-17 12:03:32,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-17 12:03:32,263 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:03:32,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:03:32,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 12:03:32,264 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:03:32,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:03:32,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1894864309, now seen corresponding path program 1 times [2020-07-17 12:03:32,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:03:32,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321350335] [2020-07-17 12:03:32,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:03:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:32,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:03:32,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321350335] [2020-07-17 12:03:32,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:03:32,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 12:03:32,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075661997] [2020-07-17 12:03:32,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 12:03:32,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:03:32,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 12:03:32,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:03:32,349 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 5 states. [2020-07-17 12:03:32,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:03:32,519 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2020-07-17 12:03:32,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 12:03:32,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-07-17 12:03:32,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:03:32,522 INFO L225 Difference]: With dead ends: 136 [2020-07-17 12:03:32,522 INFO L226 Difference]: Without dead ends: 116 [2020-07-17 12:03:32,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 12:03:32,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-07-17 12:03:32,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 76. [2020-07-17 12:03:32,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-17 12:03:32,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2020-07-17 12:03:32,530 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 20 [2020-07-17 12:03:32,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:03:32,530 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2020-07-17 12:03:32,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 12:03:32,530 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2020-07-17 12:03:32,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-17 12:03:32,531 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:03:32,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:03:32,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 12:03:32,532 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:03:32,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:03:32,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1337316768, now seen corresponding path program 1 times [2020-07-17 12:03:32,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:03:32,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486334735] [2020-07-17 12:03:32,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:03:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:32,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:03:32,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486334735] [2020-07-17 12:03:32,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:03:32,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:03:32,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271175676] [2020-07-17 12:03:32,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:03:32,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:03:32,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:03:32,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:03:32,570 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 4 states. [2020-07-17 12:03:32,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:03:32,694 INFO L93 Difference]: Finished difference Result 141 states and 159 transitions. [2020-07-17 12:03:32,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 12:03:32,694 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-07-17 12:03:32,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:03:32,695 INFO L225 Difference]: With dead ends: 141 [2020-07-17 12:03:32,695 INFO L226 Difference]: Without dead ends: 100 [2020-07-17 12:03:32,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:03:32,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-07-17 12:03:32,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 79. [2020-07-17 12:03:32,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-07-17 12:03:32,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2020-07-17 12:03:32,703 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 24 [2020-07-17 12:03:32,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:03:32,703 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2020-07-17 12:03:32,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:03:32,703 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2020-07-17 12:03:32,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-17 12:03:32,704 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:03:32,704 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-17 12:03:32,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 12:03:32,705 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:03:32,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:03:32,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1492857654, now seen corresponding path program 1 times [2020-07-17 12:03:32,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:03:32,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246660185] [2020-07-17 12:03:32,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:03:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:32,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:03:32,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246660185] [2020-07-17 12:03:32,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:03:32,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:03:32,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141127526] [2020-07-17 12:03:32,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:03:32,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:03:32,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:03:32,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:03:32,764 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand 4 states. [2020-07-17 12:03:32,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:03:32,887 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2020-07-17 12:03:32,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 12:03:32,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-07-17 12:03:32,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:03:32,889 INFO L225 Difference]: With dead ends: 79 [2020-07-17 12:03:32,889 INFO L226 Difference]: Without dead ends: 77 [2020-07-17 12:03:32,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:03:32,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-07-17 12:03:32,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-07-17 12:03:32,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-17 12:03:32,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2020-07-17 12:03:32,895 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 25 [2020-07-17 12:03:32,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:03:32,896 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2020-07-17 12:03:32,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:03:32,896 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2020-07-17 12:03:32,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-17 12:03:32,897 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:03:32,897 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-17 12:03:32,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 12:03:32,898 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:03:32,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:03:32,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1632693981, now seen corresponding path program 1 times [2020-07-17 12:03:32,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:03:32,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696961235] [2020-07-17 12:03:32,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:03:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:32,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:03:32,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696961235] [2020-07-17 12:03:32,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:03:32,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 12:03:32,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749538044] [2020-07-17 12:03:32,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 12:03:32,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:03:32,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 12:03:32,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:03:32,949 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand 5 states. [2020-07-17 12:03:33,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:03:33,086 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2020-07-17 12:03:33,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 12:03:33,087 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-07-17 12:03:33,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:03:33,088 INFO L225 Difference]: With dead ends: 78 [2020-07-17 12:03:33,088 INFO L226 Difference]: Without dead ends: 76 [2020-07-17 12:03:33,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:03:33,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-07-17 12:03:33,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-07-17 12:03:33,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-17 12:03:33,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-07-17 12:03:33,093 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 27 [2020-07-17 12:03:33,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:03:33,094 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-07-17 12:03:33,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 12:03:33,094 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-07-17 12:03:33,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-17 12:03:33,095 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:03:33,095 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-07-17 12:03:33,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-17 12:03:33,096 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:03:33,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:03:33,096 INFO L82 PathProgramCache]: Analyzing trace with hash 668074133, now seen corresponding path program 1 times [2020-07-17 12:03:33,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:03:33,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047932067] [2020-07-17 12:03:33,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:03:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:33,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:03:33,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047932067] [2020-07-17 12:03:33,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:03:33,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 12:03:33,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418083738] [2020-07-17 12:03:33,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 12:03:33,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:03:33,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 12:03:33,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 12:03:33,166 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 6 states. [2020-07-17 12:03:33,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:03:33,457 INFO L93 Difference]: Finished difference Result 179 states and 203 transitions. [2020-07-17 12:03:33,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-17 12:03:33,458 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-07-17 12:03:33,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:03:33,459 INFO L225 Difference]: With dead ends: 179 [2020-07-17 12:03:33,459 INFO L226 Difference]: Without dead ends: 137 [2020-07-17 12:03:33,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-07-17 12:03:33,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-07-17 12:03:33,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 85. [2020-07-17 12:03:33,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-07-17 12:03:33,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-07-17 12:03:33,469 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 28 [2020-07-17 12:03:33,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:03:33,470 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-07-17 12:03:33,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 12:03:33,470 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-07-17 12:03:33,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-17 12:03:33,471 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:03:33,471 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-07-17 12:03:33,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-17 12:03:33,471 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:03:33,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:03:33,472 INFO L82 PathProgramCache]: Analyzing trace with hash 567478293, now seen corresponding path program 1 times [2020-07-17 12:03:33,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:03:33,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145610346] [2020-07-17 12:03:33,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:03:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:33,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:03:33,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145610346] [2020-07-17 12:03:33,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:03:33,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-17 12:03:33,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564763799] [2020-07-17 12:03:33,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 12:03:33,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:03:33,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 12:03:33,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-17 12:03:33,726 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 8 states. [2020-07-17 12:03:34,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:03:34,327 INFO L93 Difference]: Finished difference Result 228 states and 252 transitions. [2020-07-17 12:03:34,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-17 12:03:34,328 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-07-17 12:03:34,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:03:34,331 INFO L225 Difference]: With dead ends: 228 [2020-07-17 12:03:34,331 INFO L226 Difference]: Without dead ends: 226 [2020-07-17 12:03:34,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-07-17 12:03:34,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-07-17 12:03:34,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 97. [2020-07-17 12:03:34,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-07-17 12:03:34,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 110 transitions. [2020-07-17 12:03:34,340 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 110 transitions. Word has length 28 [2020-07-17 12:03:34,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:03:34,340 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 110 transitions. [2020-07-17 12:03:34,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 12:03:34,341 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 110 transitions. [2020-07-17 12:03:34,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-17 12:03:34,342 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:03:34,342 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2020-07-17 12:03:34,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-17 12:03:34,342 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:03:34,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:03:34,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1429819819, now seen corresponding path program 1 times [2020-07-17 12:03:34,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:03:34,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149939207] [2020-07-17 12:03:34,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:03:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:34,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-17 12:03:34,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149939207] [2020-07-17 12:03:34,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:03:34,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 12:03:34,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412027806] [2020-07-17 12:03:34,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 12:03:34,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:03:34,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 12:03:34,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:03:34,426 INFO L87 Difference]: Start difference. First operand 97 states and 110 transitions. Second operand 5 states. [2020-07-17 12:03:34,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:03:34,608 INFO L93 Difference]: Finished difference Result 143 states and 162 transitions. [2020-07-17 12:03:34,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 12:03:34,608 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-17 12:03:34,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:03:34,611 INFO L225 Difference]: With dead ends: 143 [2020-07-17 12:03:34,611 INFO L226 Difference]: Without dead ends: 125 [2020-07-17 12:03:34,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 12:03:34,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-07-17 12:03:34,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2020-07-17 12:03:34,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-07-17 12:03:34,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 137 transitions. [2020-07-17 12:03:34,619 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 137 transitions. Word has length 30 [2020-07-17 12:03:34,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:03:34,619 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 137 transitions. [2020-07-17 12:03:34,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 12:03:34,619 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 137 transitions. [2020-07-17 12:03:34,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-17 12:03:34,620 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:03:34,621 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2020-07-17 12:03:34,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-17 12:03:34,621 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:03:34,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:03:34,621 INFO L82 PathProgramCache]: Analyzing trace with hash -753501909, now seen corresponding path program 1 times [2020-07-17 12:03:34,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:03:34,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558623965] [2020-07-17 12:03:34,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:03:34,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:03:34,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-17 12:03:34,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558623965] [2020-07-17 12:03:34,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:03:34,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:03:34,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406665401] [2020-07-17 12:03:34,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:03:34,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:03:34,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:03:34,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:03:34,668 INFO L87 Difference]: Start difference. First operand 117 states and 137 transitions. Second operand 4 states. [2020-07-17 12:03:34,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:03:34,807 INFO L93 Difference]: Finished difference Result 117 states and 137 transitions. [2020-07-17 12:03:34,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 12:03:34,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-07-17 12:03:34,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:03:34,809 INFO L225 Difference]: With dead ends: 117 [2020-07-17 12:03:34,809 INFO L226 Difference]: Without dead ends: 115 [2020-07-17 12:03:34,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:03:34,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-07-17 12:03:34,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-07-17 12:03:34,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-07-17 12:03:34,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2020-07-17 12:03:34,818 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 30 [2020-07-17 12:03:34,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:03:34,818 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2020-07-17 12:03:34,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:03:34,819 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2020-07-17 12:03:34,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-17 12:03:34,820 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:03:34,820 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-07-17 12:03:34,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-17 12:03:34,820 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:03:34,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:03:34,821 INFO L82 PathProgramCache]: Analyzing trace with hash 758661948, now seen corresponding path program 1 times [2020-07-17 12:03:34,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:03:34,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305542747] [2020-07-17 12:03:34,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:03:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 12:03:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 12:03:34,878 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 12:03:34,879 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 12:03:34,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-17 12:03:34,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 12:03:34 BoogieIcfgContainer [2020-07-17 12:03:34,937 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 12:03:34,940 INFO L168 Benchmark]: Toolchain (without parser) took 6533.08 ms. Allocated memory was 138.9 MB in the beginning and 286.8 MB in the end (delta: 147.8 MB). Free memory was 99.7 MB in the beginning and 90.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 157.2 MB. Max. memory is 7.1 GB. [2020-07-17 12:03:34,941 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-17 12:03:34,942 INFO L168 Benchmark]: CACSL2BoogieTranslator took 608.33 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 99.2 MB in the beginning and 168.7 MB in the end (delta: -69.5 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-07-17 12:03:34,948 INFO L168 Benchmark]: Boogie Preprocessor took 87.30 ms. Allocated memory is still 202.4 MB. Free memory was 168.7 MB in the beginning and 165.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2020-07-17 12:03:34,949 INFO L168 Benchmark]: RCFGBuilder took 797.04 ms. Allocated memory is still 202.4 MB. Free memory was 165.0 MB in the beginning and 109.4 MB in the end (delta: 55.7 MB). Peak memory consumption was 55.7 MB. Max. memory is 7.1 GB. [2020-07-17 12:03:34,949 INFO L168 Benchmark]: TraceAbstraction took 5034.29 ms. Allocated memory was 202.4 MB in the beginning and 286.8 MB in the end (delta: 84.4 MB). Free memory was 108.7 MB in the beginning and 90.4 MB in the end (delta: 18.3 MB). Peak memory consumption was 102.8 MB. Max. memory is 7.1 GB. [2020-07-17 12:03:34,955 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 608.33 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 99.2 MB in the beginning and 168.7 MB in the end (delta: -69.5 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.30 ms. Allocated memory is still 202.4 MB. Free memory was 168.7 MB in the beginning and 165.0 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 797.04 ms. Allocated memory is still 202.4 MB. Free memory was 165.0 MB in the beginning and 109.4 MB in the end (delta: 55.7 MB). Peak memory consumption was 55.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5034.29 ms. Allocated memory was 202.4 MB in the beginning and 286.8 MB in the end (delta: 84.4 MB). Free memory was 108.7 MB in the beginning and 90.4 MB in the end (delta: 18.3 MB). Peak memory consumption was 102.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1029]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* list = malloc(sizeof(SLL)); [L993] list->next = ((void*)0) [L994] list->prev = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L995] COND FALSE !(!(list != ((void*)0))) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L995] COND FALSE !(__VERIFIER_nondet_int()) [L995] list->inner = malloc(sizeof(SLL)) [L995] EXPR list->inner [L995] list->inner->next = ((void*)0) [L995] EXPR list->inner [L995] list->inner->inner = ((void*)0) [L995] EXPR list->inner [L995] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, list->inner != ((void*)0) || list->inner == ((void*)0)=1, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L995] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L997] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1011] end = ((void*)0) [L1012] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1015] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1017] COND TRUE ((void*)0) != end [L1019] int len = 0; [L1020] EXPR end->inner [L1020] SLL* inner = end->inner; [L1021] COND TRUE ((void*)0) != inner VAL [end={-1:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1023] COND TRUE len == 0 [L1024] len = 1 VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1027] COND FALSE !(!(((void*)0) != inner)) VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1028] EXPR inner->inner VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1028] COND FALSE !(!(((void*)0) == inner->inner)) [L1029] EXPR inner->next VAL [end={-1:0}, inner={-2:0}, inner->next={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1029] COND TRUE !(((void*)0) != inner->next) [L1029] __VERIFIER_error() VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 88 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.9s, OverallIterations: 15, TraceHistogramMax: 1, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1050 SDtfs, 927 SDslu, 1484 SDs, 0 SdLazy, 1936 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 420 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 331 NumberOfCodeBlocks, 331 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 286 ConstructedInterpolants, 0 QuantifiedInterpolants, 42885 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...