/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 0.1.25-3af5e1f [2020-09-04 13:30:37,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:30:37,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:30:37,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:30:37,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:30:37,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:30:37,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:30:37,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:30:37,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:30:37,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:30:37,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:30:37,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:30:37,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:30:37,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:30:37,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:30:37,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:30:37,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:30:37,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:30:37,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:30:37,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:30:37,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:30:37,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:30:37,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:30:37,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:30:37,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 13:30:37,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 13:30:37,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 13:30:37,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 13:30:37,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 13:30:37,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 13:30:37,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 13:30:37,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 13:30:37,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 13:30:37,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 13:30:37,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 13:30:37,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 13:30:37,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 13:30:37,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 13:30:37,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:30:37,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:30:37,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:30:37,983 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:30:38,009 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:30:38,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:30:38,011 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:30:38,011 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:30:38,011 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:30:38,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:30:38,012 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:30:38,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:30:38,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:30:38,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:30:38,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:30:38,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:30:38,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:30:38,013 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:30:38,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:30:38,013 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:30:38,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:30:38,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:30:38,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:30:38,014 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:30:38,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:30:38,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:30:38,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:30:38,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:30:38,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:30:38,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:30:38,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:30:38,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:30:38,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:30:38,016 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:30:38,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:30:38,487 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:30:38,492 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:30:38,493 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:30:38,494 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:30:38,495 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-09-04 13:30:38,589 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8660f2b0/d814aaf5fe3143d7afd179e0d55542ca/FLAGb2d05e84a [2020-09-04 13:30:39,243 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:30:39,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-09-04 13:30:39,269 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8660f2b0/d814aaf5fe3143d7afd179e0d55542ca/FLAGb2d05e84a [2020-09-04 13:30:39,547 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8660f2b0/d814aaf5fe3143d7afd179e0d55542ca [2020-09-04 13:30:39,562 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:30:39,564 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:30:39,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:30:39,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:30:39,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:30:39,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:30:39" (1/1) ... [2020-09-04 13:30:39,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75024412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:30:39, skipping insertion in model container [2020-09-04 13:30:39,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:30:39" (1/1) ... [2020-09-04 13:30:39,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:30:39,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:30:40,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:30:40,109 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:30:40,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:30:40,219 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:30:40,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:30:40 WrapperNode [2020-09-04 13:30:40,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:30:40,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:30:40,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:30:40,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:30:40,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:30:40" (1/1) ... [2020-09-04 13:30:40,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:30:40" (1/1) ... [2020-09-04 13:30:40,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:30:40" (1/1) ... [2020-09-04 13:30:40,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:30:40" (1/1) ... [2020-09-04 13:30:40,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:30:40" (1/1) ... [2020-09-04 13:30:40,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:30:40" (1/1) ... [2020-09-04 13:30:40,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:30:40" (1/1) ... [2020-09-04 13:30:40,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:30:40,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:30:40,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:30:40,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:30:40,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:30:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:30:40,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:30:40,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:30:40,387 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:30:40,388 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-04 13:30:40,388 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-04 13:30:40,388 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-04 13:30:40,388 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-04 13:30:40,388 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-04 13:30:40,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-04 13:30:40,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-04 13:30:40,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-04 13:30:40,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-04 13:30:40,389 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-04 13:30:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-04 13:30:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-04 13:30:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-04 13:30:40,390 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-04 13:30:40,391 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-04 13:30:40,391 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-04 13:30:40,391 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-04 13:30:40,391 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-04 13:30:40,391 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-04 13:30:40,392 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-04 13:30:40,392 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-04 13:30:40,392 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-04 13:30:40,392 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-04 13:30:40,392 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-04 13:30:40,392 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-04 13:30:40,393 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-04 13:30:40,393 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-04 13:30:40,393 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-04 13:30:40,393 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-04 13:30:40,393 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-04 13:30:40,393 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-04 13:30:40,394 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-04 13:30:40,394 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-04 13:30:40,394 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-04 13:30:40,394 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-04 13:30:40,394 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-04 13:30:40,394 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-04 13:30:40,394 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-04 13:30:40,395 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-04 13:30:40,395 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-04 13:30:40,395 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-04 13:30:40,395 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-04 13:30:40,395 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-04 13:30:40,395 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-04 13:30:40,396 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-04 13:30:40,396 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-04 13:30:40,396 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-04 13:30:40,396 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-04 13:30:40,396 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-04 13:30:40,396 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-04 13:30:40,396 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 13:30:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-04 13:30:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-04 13:30:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 13:30:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-04 13:30:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-04 13:30:40,397 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-04 13:30:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-04 13:30:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-04 13:30:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:30:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-04 13:30:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-04 13:30:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-04 13:30:40,399 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-04 13:30:40,399 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-04 13:30:40,399 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-04 13:30:40,399 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-04 13:30:40,399 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-04 13:30:40,399 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-04 13:30:40,400 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-04 13:30:40,400 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-04 13:30:40,400 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-04 13:30:40,400 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-04 13:30:40,400 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-04 13:30:40,400 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-04 13:30:40,401 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-04 13:30:40,401 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-04 13:30:40,401 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-04 13:30:40,401 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-04 13:30:40,401 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-04 13:30:40,401 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-04 13:30:40,402 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-04 13:30:40,402 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-04 13:30:40,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-04 13:30:40,402 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-04 13:30:40,402 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-04 13:30:40,402 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-04 13:30:40,403 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-04 13:30:40,403 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-04 13:30:40,403 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-04 13:30:40,403 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-04 13:30:40,403 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-04 13:30:40,403 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-04 13:30:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-04 13:30:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-04 13:30:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-04 13:30:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-04 13:30:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-04 13:30:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-04 13:30:40,405 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-04 13:30:40,405 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-04 13:30:40,405 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-04 13:30:40,405 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-04 13:30:40,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:30:40,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:30:40,405 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:30:40,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 13:30:40,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 13:30:40,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 13:30:40,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:30:40,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:30:40,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:30:41,169 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:30:41,170 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-09-04 13:30:41,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:30:41 BoogieIcfgContainer [2020-09-04 13:30:41,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:30:41,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:30:41,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:30:41,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:30:41,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:30:39" (1/3) ... [2020-09-04 13:30:41,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e5220b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:30:41, skipping insertion in model container [2020-09-04 13:30:41,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:30:40" (2/3) ... [2020-09-04 13:30:41,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e5220b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:30:41, skipping insertion in model container [2020-09-04 13:30:41,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:30:41" (3/3) ... [2020-09-04 13:30:41,187 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2020-09-04 13:30:41,199 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:30:41,210 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-09-04 13:30:41,231 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-09-04 13:30:41,265 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:30:41,265 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:30:41,266 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:30:41,266 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:30:41,266 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:30:41,266 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:30:41,266 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:30:41,267 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:30:41,296 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-09-04 13:30:41,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-04 13:30:41,305 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:30:41,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:30:41,307 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]=== [2020-09-04 13:30:41,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:30:41,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1861454184, now seen corresponding path program 1 times [2020-09-04 13:30:41,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:30:41,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510127631] [2020-09-04 13:30:41,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:30:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:41,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:30:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:41,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:30:41,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510127631] [2020-09-04 13:30:41,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:30:41,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 13:30:41,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910972192] [2020-09-04 13:30:41,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 13:30:41,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:30:41,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 13:30:41,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 13:30:41,629 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-09-04 13:30:41,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:30:41,880 INFO L93 Difference]: Finished difference Result 186 states and 302 transitions. [2020-09-04 13:30:41,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 13:30:41,882 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-09-04 13:30:41,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:30:41,896 INFO L225 Difference]: With dead ends: 186 [2020-09-04 13:30:41,897 INFO L226 Difference]: Without dead ends: 99 [2020-09-04 13:30:41,902 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 [2020-09-04 13:30:41,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-09-04 13:30:41,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 81. [2020-09-04 13:30:41,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-04 13:30:41,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-09-04 13:30:41,955 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 8 [2020-09-04 13:30:41,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:30:41,956 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-09-04 13:30:41,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 13:30:41,956 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-09-04 13:30:41,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-04 13:30:41,957 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:30:41,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:30:41,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:30:41,958 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]=== [2020-09-04 13:30:41,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:30:41,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1461031906, now seen corresponding path program 1 times [2020-09-04 13:30:41,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:30:41,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788089520] [2020-09-04 13:30:41,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:30:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:42,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:30:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:42,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:30:42,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788089520] [2020-09-04 13:30:42,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:30:42,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 13:30:42,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395695988] [2020-09-04 13:30:42,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 13:30:42,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:30:42,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 13:30:42,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 13:30:42,048 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 4 states. [2020-09-04 13:30:42,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:30:42,255 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-09-04 13:30:42,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 13:30:42,256 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-04 13:30:42,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:30:42,258 INFO L225 Difference]: With dead ends: 84 [2020-09-04 13:30:42,258 INFO L226 Difference]: Without dead ends: 82 [2020-09-04 13:30:42,261 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 [2020-09-04 13:30:42,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-04 13:30:42,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-09-04 13:30:42,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-04 13:30:42,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-09-04 13:30:42,287 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 14 [2020-09-04 13:30:42,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:30:42,291 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-09-04 13:30:42,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 13:30:42,291 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-09-04 13:30:42,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-04 13:30:42,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:30:42,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:30:42,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:30:42,293 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]=== [2020-09-04 13:30:42,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:30:42,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1461033828, now seen corresponding path program 1 times [2020-09-04 13:30:42,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:30:42,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596218782] [2020-09-04 13:30:42,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:30:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:42,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:30:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:42,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:30:42,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596218782] [2020-09-04 13:30:42,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:30:42,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:30:42,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062167414] [2020-09-04 13:30:42,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:30:42,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:30:42,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:30:42,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:30:42,429 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 5 states. [2020-09-04 13:30:42,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:30:42,693 INFO L93 Difference]: Finished difference Result 138 states and 153 transitions. [2020-09-04 13:30:42,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:30:42,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-04 13:30:42,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:30:42,695 INFO L225 Difference]: With dead ends: 138 [2020-09-04 13:30:42,696 INFO L226 Difference]: Without dead ends: 136 [2020-09-04 13:30:42,696 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 [2020-09-04 13:30:42,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-04 13:30:42,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 84. [2020-09-04 13:30:42,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-04 13:30:42,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2020-09-04 13:30:42,708 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 14 [2020-09-04 13:30:42,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:30:42,709 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2020-09-04 13:30:42,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:30:42,709 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2020-09-04 13:30:42,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-04 13:30:42,710 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:30:42,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:30:42,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 13:30:42,711 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]=== [2020-09-04 13:30:42,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:30:42,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1462880870, now seen corresponding path program 1 times [2020-09-04 13:30:42,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:30:42,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154444223] [2020-09-04 13:30:42,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:30:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:42,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:30:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:42,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:30:42,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154444223] [2020-09-04 13:30:42,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:30:42,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:30:42,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554054624] [2020-09-04 13:30:42,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:30:42,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:30:42,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:30:42,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:30:42,809 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand 5 states. [2020-09-04 13:30:42,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:30:42,988 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-09-04 13:30:42,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 13:30:42,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-04 13:30:42,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:30:42,990 INFO L225 Difference]: With dead ends: 84 [2020-09-04 13:30:42,990 INFO L226 Difference]: Without dead ends: 82 [2020-09-04 13:30:42,991 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 [2020-09-04 13:30:42,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-04 13:30:42,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-09-04 13:30:42,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-04 13:30:42,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2020-09-04 13:30:43,000 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 14 [2020-09-04 13:30:43,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:30:43,000 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2020-09-04 13:30:43,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:30:43,001 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2020-09-04 13:30:43,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-04 13:30:43,002 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:30:43,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:30:43,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 13:30:43,002 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]=== [2020-09-04 13:30:43,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:30:43,003 INFO L82 PathProgramCache]: Analyzing trace with hash 177734485, now seen corresponding path program 1 times [2020-09-04 13:30:43,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:30:43,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861829134] [2020-09-04 13:30:43,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:30:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:43,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:30:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:43,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:30:43,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861829134] [2020-09-04 13:30:43,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:30:43,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:30:43,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557543555] [2020-09-04 13:30:43,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:30:43,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:30:43,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:30:43,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:30:43,130 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand 5 states. [2020-09-04 13:30:43,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:30:43,349 INFO L93 Difference]: Finished difference Result 199 states and 221 transitions. [2020-09-04 13:30:43,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 13:30:43,350 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-04 13:30:43,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:30:43,352 INFO L225 Difference]: With dead ends: 199 [2020-09-04 13:30:43,353 INFO L226 Difference]: Without dead ends: 132 [2020-09-04 13:30:43,354 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 [2020-09-04 13:30:43,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-04 13:30:43,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 81. [2020-09-04 13:30:43,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-04 13:30:43,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-09-04 13:30:43,372 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 19 [2020-09-04 13:30:43,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:30:43,373 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-09-04 13:30:43,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:30:43,373 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-09-04 13:30:43,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-04 13:30:43,374 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:30:43,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:30:43,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 13:30:43,374 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]=== [2020-09-04 13:30:43,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:30:43,376 INFO L82 PathProgramCache]: Analyzing trace with hash -631612141, now seen corresponding path program 1 times [2020-09-04 13:30:43,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:30:43,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635969128] [2020-09-04 13:30:43,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:30:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:43,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:30:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:43,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:30:43,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635969128] [2020-09-04 13:30:43,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:30:43,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 13:30:43,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010869616] [2020-09-04 13:30:43,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 13:30:43,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:30:43,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 13:30:43,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:30:43,538 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 6 states. [2020-09-04 13:30:43,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:30:43,772 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2020-09-04 13:30:43,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:30:43,773 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-09-04 13:30:43,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:30:43,774 INFO L225 Difference]: With dead ends: 126 [2020-09-04 13:30:43,774 INFO L226 Difference]: Without dead ends: 122 [2020-09-04 13:30:43,775 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 [2020-09-04 13:30:43,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-04 13:30:43,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 77. [2020-09-04 13:30:43,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-04 13:30:43,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2020-09-04 13:30:43,783 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 19 [2020-09-04 13:30:43,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:30:43,783 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2020-09-04 13:30:43,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 13:30:43,783 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2020-09-04 13:30:43,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-04 13:30:43,784 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:30:43,784 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] [2020-09-04 13:30:43,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 13:30:43,785 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]=== [2020-09-04 13:30:43,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:30:43,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1894864309, now seen corresponding path program 1 times [2020-09-04 13:30:43,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:30:43,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704647318] [2020-09-04 13:30:43,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:30:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:43,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:30:43,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:30:43,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704647318] [2020-09-04 13:30:43,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:30:43,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 13:30:43,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985491584] [2020-09-04 13:30:43,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 13:30:43,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:30:43,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 13:30:43,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:30:43,864 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 6 states. [2020-09-04 13:30:44,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:30:44,089 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2020-09-04 13:30:44,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 13:30:44,089 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-09-04 13:30:44,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:30:44,091 INFO L225 Difference]: With dead ends: 136 [2020-09-04 13:30:44,091 INFO L226 Difference]: Without dead ends: 116 [2020-09-04 13:30:44,092 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 [2020-09-04 13:30:44,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-04 13:30:44,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 76. [2020-09-04 13:30:44,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-04 13:30:44,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2020-09-04 13:30:44,098 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 20 [2020-09-04 13:30:44,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:30:44,099 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2020-09-04 13:30:44,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 13:30:44,099 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2020-09-04 13:30:44,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-04 13:30:44,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:30:44,100 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] [2020-09-04 13:30:44,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 13:30:44,100 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]=== [2020-09-04 13:30:44,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:30:44,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1337316768, now seen corresponding path program 1 times [2020-09-04 13:30:44,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:30:44,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760703524] [2020-09-04 13:30:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:30:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:44,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:30:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:44,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:30:44,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760703524] [2020-09-04 13:30:44,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:30:44,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 13:30:44,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195855240] [2020-09-04 13:30:44,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 13:30:44,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:30:44,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 13:30:44,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 13:30:44,172 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 4 states. [2020-09-04 13:30:44,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:30:44,333 INFO L93 Difference]: Finished difference Result 141 states and 159 transitions. [2020-09-04 13:30:44,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 13:30:44,334 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-09-04 13:30:44,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:30:44,335 INFO L225 Difference]: With dead ends: 141 [2020-09-04 13:30:44,335 INFO L226 Difference]: Without dead ends: 100 [2020-09-04 13:30:44,335 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 [2020-09-04 13:30:44,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-04 13:30:44,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 79. [2020-09-04 13:30:44,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-04 13:30:44,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2020-09-04 13:30:44,341 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 24 [2020-09-04 13:30:44,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:30:44,342 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2020-09-04 13:30:44,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 13:30:44,342 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2020-09-04 13:30:44,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-04 13:30:44,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:30:44,343 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] [2020-09-04 13:30:44,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 13:30:44,343 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]=== [2020-09-04 13:30:44,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:30:44,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1492857654, now seen corresponding path program 1 times [2020-09-04 13:30:44,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:30:44,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828230610] [2020-09-04 13:30:44,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:30:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:44,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:30:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:44,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:30:44,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828230610] [2020-09-04 13:30:44,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:30:44,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 13:30:44,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779493325] [2020-09-04 13:30:44,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 13:30:44,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:30:44,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 13:30:44,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 13:30:44,402 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand 4 states. [2020-09-04 13:30:44,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:30:44,551 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2020-09-04 13:30:44,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 13:30:44,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-04 13:30:44,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:30:44,553 INFO L225 Difference]: With dead ends: 79 [2020-09-04 13:30:44,553 INFO L226 Difference]: Without dead ends: 77 [2020-09-04 13:30:44,554 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 [2020-09-04 13:30:44,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-04 13:30:44,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-09-04 13:30:44,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-04 13:30:44,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2020-09-04 13:30:44,560 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 25 [2020-09-04 13:30:44,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:30:44,561 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2020-09-04 13:30:44,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 13:30:44,561 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2020-09-04 13:30:44,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-04 13:30:44,562 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:30:44,562 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] [2020-09-04 13:30:44,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 13:30:44,563 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]=== [2020-09-04 13:30:44,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:30:44,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1632693981, now seen corresponding path program 1 times [2020-09-04 13:30:44,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:30:44,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579189984] [2020-09-04 13:30:44,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:30:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:44,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:30:44,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:44,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:30:44,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579189984] [2020-09-04 13:30:44,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:30:44,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:30:44,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226373378] [2020-09-04 13:30:44,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:30:44,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:30:44,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:30:44,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:30:44,630 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand 5 states. [2020-09-04 13:30:44,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:30:44,776 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2020-09-04 13:30:44,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 13:30:44,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-04 13:30:44,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:30:44,780 INFO L225 Difference]: With dead ends: 78 [2020-09-04 13:30:44,781 INFO L226 Difference]: Without dead ends: 76 [2020-09-04 13:30:44,782 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 [2020-09-04 13:30:44,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-04 13:30:44,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-09-04 13:30:44,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-04 13:30:44,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-09-04 13:30:44,787 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 27 [2020-09-04 13:30:44,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:30:44,787 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-09-04 13:30:44,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:30:44,787 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-09-04 13:30:44,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-04 13:30:44,788 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:30:44,788 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] [2020-09-04 13:30:44,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 13:30:44,789 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]=== [2020-09-04 13:30:44,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:30:44,789 INFO L82 PathProgramCache]: Analyzing trace with hash 668074133, now seen corresponding path program 1 times [2020-09-04 13:30:44,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:30:44,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646702701] [2020-09-04 13:30:44,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:30:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:44,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:30:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:44,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:30:44,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646702701] [2020-09-04 13:30:44,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:30:44,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 13:30:44,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117047935] [2020-09-04 13:30:44,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 13:30:44,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:30:44,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 13:30:44,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:30:44,875 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 6 states. [2020-09-04 13:30:45,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:30:45,222 INFO L93 Difference]: Finished difference Result 179 states and 203 transitions. [2020-09-04 13:30:45,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 13:30:45,222 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-09-04 13:30:45,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:30:45,223 INFO L225 Difference]: With dead ends: 179 [2020-09-04 13:30:45,224 INFO L226 Difference]: Without dead ends: 137 [2020-09-04 13:30:45,224 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 [2020-09-04 13:30:45,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-09-04 13:30:45,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 85. [2020-09-04 13:30:45,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-04 13:30:45,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-09-04 13:30:45,231 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 28 [2020-09-04 13:30:45,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:30:45,231 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-09-04 13:30:45,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 13:30:45,231 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-09-04 13:30:45,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-04 13:30:45,232 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:30:45,233 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] [2020-09-04 13:30:45,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 13:30:45,233 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]=== [2020-09-04 13:30:45,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:30:45,234 INFO L82 PathProgramCache]: Analyzing trace with hash 567478293, now seen corresponding path program 1 times [2020-09-04 13:30:45,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:30:45,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413971746] [2020-09-04 13:30:45,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:30:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:45,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:30:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:45,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:30:45,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413971746] [2020-09-04 13:30:45,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:30:45,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 13:30:45,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342127484] [2020-09-04 13:30:45,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 13:30:45,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:30:45,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 13:30:45,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 13:30:45,579 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 9 states. [2020-09-04 13:30:46,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:30:46,449 INFO L93 Difference]: Finished difference Result 182 states and 205 transitions. [2020-09-04 13:30:46,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 13:30:46,450 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-09-04 13:30:46,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:30:46,453 INFO L225 Difference]: With dead ends: 182 [2020-09-04 13:30:46,453 INFO L226 Difference]: Without dead ends: 180 [2020-09-04 13:30:46,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-09-04 13:30:46,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-09-04 13:30:46,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 104. [2020-09-04 13:30:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-04 13:30:46,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 120 transitions. [2020-09-04 13:30:46,465 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 120 transitions. Word has length 28 [2020-09-04 13:30:46,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:30:46,466 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 120 transitions. [2020-09-04 13:30:46,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 13:30:46,466 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 120 transitions. [2020-09-04 13:30:46,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 13:30:46,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:30:46,467 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] [2020-09-04 13:30:46,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 13:30:46,468 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]=== [2020-09-04 13:30:46,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:30:46,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1429819819, now seen corresponding path program 1 times [2020-09-04 13:30:46,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:30:46,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031686880] [2020-09-04 13:30:46,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:30:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:46,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:30:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:46,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 13:30:46,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031686880] [2020-09-04 13:30:46,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:30:46,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:30:46,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225622360] [2020-09-04 13:30:46,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:30:46,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:30:46,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:30:46,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:30:46,571 INFO L87 Difference]: Start difference. First operand 104 states and 120 transitions. Second operand 5 states. [2020-09-04 13:30:46,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:30:46,818 INFO L93 Difference]: Finished difference Result 150 states and 172 transitions. [2020-09-04 13:30:46,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:30:46,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-04 13:30:46,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:30:46,820 INFO L225 Difference]: With dead ends: 150 [2020-09-04 13:30:46,820 INFO L226 Difference]: Without dead ends: 132 [2020-09-04 13:30:46,821 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 [2020-09-04 13:30:46,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-04 13:30:46,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 124. [2020-09-04 13:30:46,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-04 13:30:46,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 147 transitions. [2020-09-04 13:30:46,830 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 147 transitions. Word has length 30 [2020-09-04 13:30:46,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:30:46,831 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 147 transitions. [2020-09-04 13:30:46,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:30:46,831 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 147 transitions. [2020-09-04 13:30:46,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 13:30:46,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:30:46,833 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] [2020-09-04 13:30:46,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 13:30:46,833 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]=== [2020-09-04 13:30:46,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:30:46,834 INFO L82 PathProgramCache]: Analyzing trace with hash -753501909, now seen corresponding path program 1 times [2020-09-04 13:30:46,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:30:46,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466642197] [2020-09-04 13:30:46,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:30:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:46,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:30:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:30:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 13:30:46,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466642197] [2020-09-04 13:30:46,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:30:46,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 13:30:46,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547804174] [2020-09-04 13:30:46,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 13:30:46,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:30:46,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 13:30:46,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 13:30:46,886 INFO L87 Difference]: Start difference. First operand 124 states and 147 transitions. Second operand 4 states. [2020-09-04 13:30:47,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:30:47,046 INFO L93 Difference]: Finished difference Result 124 states and 147 transitions. [2020-09-04 13:30:47,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 13:30:47,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-09-04 13:30:47,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:30:47,047 INFO L225 Difference]: With dead ends: 124 [2020-09-04 13:30:47,048 INFO L226 Difference]: Without dead ends: 122 [2020-09-04 13:30:47,048 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 [2020-09-04 13:30:47,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-04 13:30:47,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-09-04 13:30:47,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-04 13:30:47,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 145 transitions. [2020-09-04 13:30:47,056 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 145 transitions. Word has length 30 [2020-09-04 13:30:47,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:30:47,057 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 145 transitions. [2020-09-04 13:30:47,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 13:30:47,057 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 145 transitions. [2020-09-04 13:30:47,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-04 13:30:47,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:30:47,058 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] [2020-09-04 13:30:47,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-04 13:30:47,059 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]=== [2020-09-04 13:30:47,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:30:47,059 INFO L82 PathProgramCache]: Analyzing trace with hash 758661948, now seen corresponding path program 1 times [2020-09-04 13:30:47,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:30:47,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57500548] [2020-09-04 13:30:47,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:30:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:30:47,077 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:30:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 13:30:47,093 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 13:30:47,129 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 13:30:47,130 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 13:30:47,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-04 13:30:47,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:30:47 BoogieIcfgContainer [2020-09-04 13:30:47,178 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:30:47,181 INFO L168 Benchmark]: Toolchain (without parser) took 7616.99 ms. Allocated memory was 140.5 MB in the beginning and 283.1 MB in the end (delta: 142.6 MB). Free memory was 102.0 MB in the beginning and 178.7 MB in the end (delta: -76.7 MB). Peak memory consumption was 65.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:30:47,182 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:30:47,183 INFO L168 Benchmark]: CACSL2BoogieTranslator took 655.30 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 101.8 MB in the beginning and 169.5 MB in the end (delta: -67.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-09-04 13:30:47,184 INFO L168 Benchmark]: Boogie Preprocessor took 89.21 ms. Allocated memory is still 203.4 MB. Free memory was 169.5 MB in the beginning and 165.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:30:47,185 INFO L168 Benchmark]: RCFGBuilder took 865.87 ms. Allocated memory is still 203.4 MB. Free memory was 165.5 MB in the beginning and 109.7 MB in the end (delta: 55.8 MB). Peak memory consumption was 55.8 MB. Max. memory is 7.1 GB. [2020-09-04 13:30:47,185 INFO L168 Benchmark]: TraceAbstraction took 6000.92 ms. Allocated memory was 203.4 MB in the beginning and 283.1 MB in the end (delta: 79.7 MB). Free memory was 109.1 MB in the beginning and 178.7 MB in the end (delta: -69.6 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-04 13:30:47,189 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 655.30 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 101.8 MB in the beginning and 169.5 MB in the end (delta: -67.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.21 ms. Allocated memory is still 203.4 MB. Free memory was 169.5 MB in the beginning and 165.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 865.87 ms. Allocated memory is still 203.4 MB. Free memory was 165.5 MB in the beginning and 109.7 MB in the end (delta: 55.8 MB). Peak memory consumption was 55.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6000.92 ms. Allocated memory was 203.4 MB in the beginning and 283.1 MB in the end (delta: 79.7 MB). Free memory was 109.1 MB in the beginning and 178.7 MB in the end (delta: -69.6 MB). Peak memory consumption was 10.1 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: 5.8s, OverallIterations: 15, TraceHistogramMax: 1, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1016 SDtfs, 1075 SDslu, 1380 SDs, 0 SdLazy, 1834 SolverSat, 94 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred 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, 367 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 331 NumberOfCodeBlocks, 331 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 286 ConstructedInterpolants, 0 QuantifiedInterpolants, 49886 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...