/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:06:34,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:06:34,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:06:35,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 19:06:35,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 19:06:35,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 19:06:35,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 19:06:35,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 19:06:35,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 19:06:35,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 19:06:35,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 19:06:35,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 19:06:35,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:06:35,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:06:35,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:06:35,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:06:35,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:06:35,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:06:35,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:06:35,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:06:35,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:06:35,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:06:35,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:06:35,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:06:35,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 19:06:35,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 19:06:35,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 19:06:35,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 19:06:35,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 19:06:35,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 19:06:35,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 19:06:35,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 19:06:35,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 19:06:35,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 19:06:35,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 19:06:35,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 19:06:35,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 19:06:35,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 19:06:35,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:06:35,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:06:35,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:06:35,061 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:06:35,091 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:06:35,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:06:35,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:06:35,096 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:06:35,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:06:35,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:06:35,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:06:35,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:06:35,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:06:35,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:06:35,098 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:06:35,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:06:35,099 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:06:35,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:06:35,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:06:35,099 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:06:35,100 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:06:35,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:06:35,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:06:35,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:06:35,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:06:35,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:06:35,101 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:06:35,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:06:35,522 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:06:35,527 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:06:35,529 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:06:35,529 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:06:35,530 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-22 19:06:35,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b41dba14/fec0df69cc1b408caa9d74f670e82ad0/FLAGdd8ef21d2 [2020-08-22 19:06:36,318 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:06:36,319 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-22 19:06:36,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b41dba14/fec0df69cc1b408caa9d74f670e82ad0/FLAGdd8ef21d2 [2020-08-22 19:06:36,517 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b41dba14/fec0df69cc1b408caa9d74f670e82ad0 [2020-08-22 19:06:36,531 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:06:36,533 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:06:36,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:06:36,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:06:36,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:06:36,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:06:36" (1/1) ... [2020-08-22 19:06:36,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac0db7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:36, skipping insertion in model container [2020-08-22 19:06:36,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:06:36" (1/1) ... [2020-08-22 19:06:36,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:06:36,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:06:37,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:06:37,221 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:06:37,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:06:37,347 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:06:37,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:37 WrapperNode [2020-08-22 19:06:37,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:06:37,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:06:37,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:06:37,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:06:37,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:37" (1/1) ... [2020-08-22 19:06:37,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:37" (1/1) ... [2020-08-22 19:06:37,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:37" (1/1) ... [2020-08-22 19:06:37,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:37" (1/1) ... [2020-08-22 19:06:37,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:37" (1/1) ... [2020-08-22 19:06:37,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:37" (1/1) ... [2020-08-22 19:06:37,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:37" (1/1) ... [2020-08-22 19:06:37,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:06:37,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:06:37,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:06:37,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:06:37,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:06:37,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:06:37,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:06:37,535 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:06:37,535 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 19:06:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 19:06:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 19:06:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 19:06:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 19:06:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 19:06:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 19:06:37,536 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 19:06:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 19:06:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 19:06:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 19:06:37,537 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 19:06:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 19:06:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 19:06:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 19:06:37,538 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 19:06:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 19:06:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 19:06:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 19:06:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 19:06:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 19:06:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 19:06:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 19:06:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 19:06:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 19:06:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 19:06:37,540 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 19:06:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 19:06:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 19:06:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 19:06:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 19:06:37,541 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 19:06:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 19:06:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 19:06:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 19:06:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 19:06:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 19:06:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 19:06:37,542 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 19:06:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 19:06:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 19:06:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 19:06:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 19:06:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 19:06:37,543 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 19:06:37,544 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 19:06:37,544 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 19:06:37,544 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 19:06:37,544 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 19:06:37,544 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 19:06:37,544 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 19:06:37,544 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 19:06:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 19:06:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 19:06:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 19:06:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 19:06:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 19:06:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 19:06:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 19:06:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 19:06:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 19:06:37,545 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 19:06:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 19:06:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 19:06:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 19:06:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 19:06:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 19:06:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 19:06:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 19:06:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 19:06:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 19:06:37,546 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 19:06:37,547 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 19:06:37,547 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 19:06:37,547 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 19:06:37,547 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 19:06:37,547 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 19:06:37,548 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 19:06:37,548 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 19:06:37,548 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 19:06:37,548 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 19:06:37,548 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 19:06:37,548 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 19:06:37,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 19:06:37,554 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 19:06:37,554 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 19:06:37,554 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 19:06:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 19:06:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 19:06:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 19:06:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 19:06:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 19:06:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 19:06:37,555 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 19:06:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 19:06:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 19:06:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 19:06:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 19:06:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 19:06:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 19:06:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 19:06:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 19:06:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 19:06:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:06:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:06:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:06:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 19:06:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 19:06:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 19:06:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 19:06:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:06:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:06:38,462 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:06:38,463 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-08-22 19:06:38,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:06:38 BoogieIcfgContainer [2020-08-22 19:06:38,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:06:38,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:06:38,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:06:38,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:06:38,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:06:36" (1/3) ... [2020-08-22 19:06:38,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f59cc0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:06:38, skipping insertion in model container [2020-08-22 19:06:38,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:37" (2/3) ... [2020-08-22 19:06:38,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f59cc0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:06:38, skipping insertion in model container [2020-08-22 19:06:38,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:06:38" (3/3) ... [2020-08-22 19:06:38,483 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-08-22 19:06:38,497 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:06:38,509 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-08-22 19:06:38,528 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-08-22 19:06:38,553 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:06:38,554 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:06:38,554 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:06:38,554 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:06:38,554 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:06:38,555 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:06:38,555 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:06:38,555 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:06:38,584 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-08-22 19:06:38,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-22 19:06:38,598 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:38,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:06:38,601 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]=== [2020-08-22 19:06:38,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:38,610 INFO L82 PathProgramCache]: Analyzing trace with hash 885652866, now seen corresponding path program 1 times [2020-08-22 19:06:38,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:38,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355646180] [2020-08-22 19:06:38,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:38,717 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:38,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:38,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:38,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:38,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355646180] [2020-08-22 19:06:38,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:38,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 19:06:38,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590527477] [2020-08-22 19:06:38,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 19:06:38,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:38,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 19:06:38,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 19:06:38,994 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 5 states. [2020-08-22 19:06:39,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:39,661 INFO L93 Difference]: Finished difference Result 360 states and 478 transitions. [2020-08-22 19:06:39,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 19:06:39,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-08-22 19:06:39,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:39,681 INFO L225 Difference]: With dead ends: 360 [2020-08-22 19:06:39,682 INFO L226 Difference]: Without dead ends: 194 [2020-08-22 19:06:39,690 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 [2020-08-22 19:06:39,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-08-22 19:06:39,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2020-08-22 19:06:39,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-08-22 19:06:39,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 174 transitions. [2020-08-22 19:06:39,834 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 174 transitions. Word has length 12 [2020-08-22 19:06:39,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:39,835 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 174 transitions. [2020-08-22 19:06:39,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 19:06:39,835 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 174 transitions. [2020-08-22 19:06:39,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 19:06:39,837 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:39,837 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] [2020-08-22 19:06:39,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:06:39,841 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]=== [2020-08-22 19:06:39,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:39,842 INFO L82 PathProgramCache]: Analyzing trace with hash 684663316, now seen corresponding path program 1 times [2020-08-22 19:06:39,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:39,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676016222] [2020-08-22 19:06:39,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:39,853 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:39,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:40,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:40,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676016222] [2020-08-22 19:06:40,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:40,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 19:06:40,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46240234] [2020-08-22 19:06:40,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 19:06:40,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:40,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 19:06:40,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:06:40,020 INFO L87 Difference]: Start difference. First operand 164 states and 174 transitions. Second operand 4 states. [2020-08-22 19:06:40,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:40,459 INFO L93 Difference]: Finished difference Result 170 states and 180 transitions. [2020-08-22 19:06:40,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 19:06:40,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-08-22 19:06:40,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:40,463 INFO L225 Difference]: With dead ends: 170 [2020-08-22 19:06:40,463 INFO L226 Difference]: Without dead ends: 165 [2020-08-22 19:06:40,466 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 [2020-08-22 19:06:40,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-22 19:06:40,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-08-22 19:06:40,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-08-22 19:06:40,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 175 transitions. [2020-08-22 19:06:40,500 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 175 transitions. Word has length 24 [2020-08-22 19:06:40,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:40,501 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 175 transitions. [2020-08-22 19:06:40,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 19:06:40,502 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 175 transitions. [2020-08-22 19:06:40,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 19:06:40,503 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:40,504 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] [2020-08-22 19:06:40,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:06:40,505 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]=== [2020-08-22 19:06:40,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:40,506 INFO L82 PathProgramCache]: Analyzing trace with hash -265499727, now seen corresponding path program 1 times [2020-08-22 19:06:40,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:40,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218822979] [2020-08-22 19:06:40,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:40,513 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:40,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:40,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:40,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218822979] [2020-08-22 19:06:40,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:40,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 19:06:40,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054727603] [2020-08-22 19:06:40,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 19:06:40,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:40,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 19:06:40,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-22 19:06:40,673 INFO L87 Difference]: Start difference. First operand 165 states and 175 transitions. Second operand 8 states. [2020-08-22 19:06:41,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:41,378 INFO L93 Difference]: Finished difference Result 259 states and 276 transitions. [2020-08-22 19:06:41,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 19:06:41,378 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-08-22 19:06:41,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:41,383 INFO L225 Difference]: With dead ends: 259 [2020-08-22 19:06:41,384 INFO L226 Difference]: Without dead ends: 254 [2020-08-22 19:06:41,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-08-22 19:06:41,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-22 19:06:41,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 159. [2020-08-22 19:06:41,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-08-22 19:06:41,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 169 transitions. [2020-08-22 19:06:41,438 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 169 transitions. Word has length 26 [2020-08-22 19:06:41,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:41,439 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 169 transitions. [2020-08-22 19:06:41,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 19:06:41,439 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions. [2020-08-22 19:06:41,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-08-22 19:06:41,441 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:41,442 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, 1] [2020-08-22 19:06:41,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 19:06:41,442 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]=== [2020-08-22 19:06:41,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:41,443 INFO L82 PathProgramCache]: Analyzing trace with hash 72562886, now seen corresponding path program 1 times [2020-08-22 19:06:41,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:41,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594167259] [2020-08-22 19:06:41,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:41,450 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:41,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:41,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:41,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594167259] [2020-08-22 19:06:41,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:41,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 19:06:41,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265958364] [2020-08-22 19:06:41,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 19:06:41,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:41,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 19:06:41,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 19:06:41,601 INFO L87 Difference]: Start difference. First operand 159 states and 169 transitions. Second operand 6 states. [2020-08-22 19:06:42,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:42,088 INFO L93 Difference]: Finished difference Result 382 states and 407 transitions. [2020-08-22 19:06:42,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 19:06:42,089 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-08-22 19:06:42,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:42,092 INFO L225 Difference]: With dead ends: 382 [2020-08-22 19:06:42,092 INFO L226 Difference]: Without dead ends: 253 [2020-08-22 19:06:42,094 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 [2020-08-22 19:06:42,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-08-22 19:06:42,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 162. [2020-08-22 19:06:42,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-08-22 19:06:42,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 172 transitions. [2020-08-22 19:06:42,142 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 172 transitions. Word has length 32 [2020-08-22 19:06:42,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:42,143 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 172 transitions. [2020-08-22 19:06:42,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 19:06:42,143 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 172 transitions. [2020-08-22 19:06:42,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 19:06:42,145 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:42,145 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, 1, 1, 1] [2020-08-22 19:06:42,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 19:06:42,146 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]=== [2020-08-22 19:06:42,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:42,147 INFO L82 PathProgramCache]: Analyzing trace with hash 972027235, now seen corresponding path program 1 times [2020-08-22 19:06:42,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:42,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196109488] [2020-08-22 19:06:42,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:42,153 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:42,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:42,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:42,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196109488] [2020-08-22 19:06:42,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:42,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 19:06:42,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583406274] [2020-08-22 19:06:42,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 19:06:42,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:42,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 19:06:42,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 19:06:42,265 INFO L87 Difference]: Start difference. First operand 162 states and 172 transitions. Second operand 7 states. [2020-08-22 19:06:42,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:42,732 INFO L93 Difference]: Finished difference Result 271 states and 288 transitions. [2020-08-22 19:06:42,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 19:06:42,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-08-22 19:06:42,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:42,736 INFO L225 Difference]: With dead ends: 271 [2020-08-22 19:06:42,737 INFO L226 Difference]: Without dead ends: 239 [2020-08-22 19:06:42,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-08-22 19:06:42,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-08-22 19:06:42,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 161. [2020-08-22 19:06:42,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-08-22 19:06:42,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 171 transitions. [2020-08-22 19:06:42,773 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 171 transitions. Word has length 34 [2020-08-22 19:06:42,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:42,774 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 171 transitions. [2020-08-22 19:06:42,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 19:06:42,774 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 171 transitions. [2020-08-22 19:06:42,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-22 19:06:42,787 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:42,788 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:06:42,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 19:06:42,788 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]=== [2020-08-22 19:06:42,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:42,789 INFO L82 PathProgramCache]: Analyzing trace with hash -401575995, now seen corresponding path program 1 times [2020-08-22 19:06:42,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:42,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563192055] [2020-08-22 19:06:42,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:42,795 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:42,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:42,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:42,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563192055] [2020-08-22 19:06:42,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:42,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 19:06:42,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397402428] [2020-08-22 19:06:42,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 19:06:42,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:42,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 19:06:42,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 19:06:42,947 INFO L87 Difference]: Start difference. First operand 161 states and 171 transitions. Second operand 7 states. [2020-08-22 19:06:43,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:43,612 INFO L93 Difference]: Finished difference Result 245 states and 261 transitions. [2020-08-22 19:06:43,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 19:06:43,612 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-08-22 19:06:43,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:43,615 INFO L225 Difference]: With dead ends: 245 [2020-08-22 19:06:43,615 INFO L226 Difference]: Without dead ends: 241 [2020-08-22 19:06:43,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-08-22 19:06:43,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-08-22 19:06:43,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 157. [2020-08-22 19:06:43,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-08-22 19:06:43,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 167 transitions. [2020-08-22 19:06:43,644 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 167 transitions. Word has length 38 [2020-08-22 19:06:43,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:43,645 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 167 transitions. [2020-08-22 19:06:43,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 19:06:43,645 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 167 transitions. [2020-08-22 19:06:43,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-22 19:06:43,646 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:43,646 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:06:43,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 19:06:43,647 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]=== [2020-08-22 19:06:43,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:43,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1938604912, now seen corresponding path program 1 times [2020-08-22 19:06:43,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:43,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060561371] [2020-08-22 19:06:43,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:43,652 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:43,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:43,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:43,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060561371] [2020-08-22 19:06:43,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:43,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 19:06:43,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31574467] [2020-08-22 19:06:43,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 19:06:43,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:43,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 19:06:43,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:06:43,746 INFO L87 Difference]: Start difference. First operand 157 states and 167 transitions. Second operand 4 states. [2020-08-22 19:06:44,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:44,071 INFO L93 Difference]: Finished difference Result 267 states and 287 transitions. [2020-08-22 19:06:44,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 19:06:44,072 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-08-22 19:06:44,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:44,074 INFO L225 Difference]: With dead ends: 267 [2020-08-22 19:06:44,074 INFO L226 Difference]: Without dead ends: 196 [2020-08-22 19:06:44,075 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 [2020-08-22 19:06:44,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-22 19:06:44,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 160. [2020-08-22 19:06:44,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-08-22 19:06:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 171 transitions. [2020-08-22 19:06:44,101 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 171 transitions. Word has length 42 [2020-08-22 19:06:44,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:44,101 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 171 transitions. [2020-08-22 19:06:44,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 19:06:44,102 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions. [2020-08-22 19:06:44,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-08-22 19:06:44,102 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:44,103 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:06:44,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 19:06:44,103 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]=== [2020-08-22 19:06:44,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:44,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1017153069, now seen corresponding path program 1 times [2020-08-22 19:06:44,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:44,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135377393] [2020-08-22 19:06:44,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:44,109 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:44,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:44,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:44,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135377393] [2020-08-22 19:06:44,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:44,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 19:06:44,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543399685] [2020-08-22 19:06:44,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 19:06:44,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:44,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 19:06:44,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:06:44,162 INFO L87 Difference]: Start difference. First operand 160 states and 171 transitions. Second operand 4 states. [2020-08-22 19:06:44,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:44,454 INFO L93 Difference]: Finished difference Result 160 states and 171 transitions. [2020-08-22 19:06:44,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 19:06:44,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-08-22 19:06:44,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:44,456 INFO L225 Difference]: With dead ends: 160 [2020-08-22 19:06:44,457 INFO L226 Difference]: Without dead ends: 158 [2020-08-22 19:06:44,458 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 [2020-08-22 19:06:44,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-22 19:06:44,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-08-22 19:06:44,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-22 19:06:44,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 169 transitions. [2020-08-22 19:06:44,486 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 169 transitions. Word has length 44 [2020-08-22 19:06:44,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:44,487 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 169 transitions. [2020-08-22 19:06:44,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 19:06:44,487 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 169 transitions. [2020-08-22 19:06:44,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-22 19:06:44,488 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:44,488 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:06:44,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 19:06:44,489 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]=== [2020-08-22 19:06:44,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:44,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1203451366, now seen corresponding path program 1 times [2020-08-22 19:06:44,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:44,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355676678] [2020-08-22 19:06:44,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:44,495 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:44,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:44,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:44,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355676678] [2020-08-22 19:06:44,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:44,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 19:06:44,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762665224] [2020-08-22 19:06:44,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 19:06:44,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:44,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 19:06:44,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-08-22 19:06:44,736 INFO L87 Difference]: Start difference. First operand 158 states and 169 transitions. Second operand 11 states. [2020-08-22 19:06:45,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:45,778 INFO L93 Difference]: Finished difference Result 398 states and 427 transitions. [2020-08-22 19:06:45,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 19:06:45,779 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-08-22 19:06:45,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:45,784 INFO L225 Difference]: With dead ends: 398 [2020-08-22 19:06:45,784 INFO L226 Difference]: Without dead ends: 326 [2020-08-22 19:06:45,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2020-08-22 19:06:45,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-08-22 19:06:45,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 204. [2020-08-22 19:06:45,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-08-22 19:06:45,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 220 transitions. [2020-08-22 19:06:45,822 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 220 transitions. Word has length 48 [2020-08-22 19:06:45,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:45,822 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 220 transitions. [2020-08-22 19:06:45,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 19:06:45,822 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 220 transitions. [2020-08-22 19:06:45,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 19:06:45,824 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:45,824 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:06:45,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 19:06:45,825 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]=== [2020-08-22 19:06:45,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:45,825 INFO L82 PathProgramCache]: Analyzing trace with hash 2069783995, now seen corresponding path program 1 times [2020-08-22 19:06:45,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:45,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681593126] [2020-08-22 19:06:45,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:45,832 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:45,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:45,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:45,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681593126] [2020-08-22 19:06:45,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:45,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 19:06:45,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831498327] [2020-08-22 19:06:45,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 19:06:45,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:45,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 19:06:45,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:06:45,916 INFO L87 Difference]: Start difference. First operand 204 states and 220 transitions. Second operand 4 states. [2020-08-22 19:06:46,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:46,245 INFO L93 Difference]: Finished difference Result 211 states and 228 transitions. [2020-08-22 19:06:46,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 19:06:46,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-08-22 19:06:46,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:46,250 INFO L225 Difference]: With dead ends: 211 [2020-08-22 19:06:46,250 INFO L226 Difference]: Without dead ends: 206 [2020-08-22 19:06:46,251 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 [2020-08-22 19:06:46,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-08-22 19:06:46,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-08-22 19:06:46,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-08-22 19:06:46,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 222 transitions. [2020-08-22 19:06:46,279 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 222 transitions. Word has length 52 [2020-08-22 19:06:46,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:46,280 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 222 transitions. [2020-08-22 19:06:46,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 19:06:46,280 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 222 transitions. [2020-08-22 19:06:46,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 19:06:46,281 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:46,281 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:06:46,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 19:06:46,282 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]=== [2020-08-22 19:06:46,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:46,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1565892499, now seen corresponding path program 1 times [2020-08-22 19:06:46,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:46,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282344245] [2020-08-22 19:06:46,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:46,286 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:46,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:46,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:46,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282344245] [2020-08-22 19:06:46,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:46,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 19:06:46,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521086181] [2020-08-22 19:06:46,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 19:06:46,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:46,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 19:06:46,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-08-22 19:06:46,694 INFO L87 Difference]: Start difference. First operand 206 states and 222 transitions. Second operand 14 states. [2020-08-22 19:06:49,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:49,051 INFO L93 Difference]: Finished difference Result 636 states and 681 transitions. [2020-08-22 19:06:49,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 19:06:49,052 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-08-22 19:06:49,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:49,057 INFO L225 Difference]: With dead ends: 636 [2020-08-22 19:06:49,057 INFO L226 Difference]: Without dead ends: 633 [2020-08-22 19:06:49,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=252, Invalid=804, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 19:06:49,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-08-22 19:06:49,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 225. [2020-08-22 19:06:49,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-08-22 19:06:49,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 243 transitions. [2020-08-22 19:06:49,109 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 243 transitions. Word has length 53 [2020-08-22 19:06:49,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:49,110 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 243 transitions. [2020-08-22 19:06:49,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 19:06:49,110 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 243 transitions. [2020-08-22 19:06:49,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 19:06:49,112 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:49,112 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:06:49,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 19:06:49,112 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]=== [2020-08-22 19:06:49,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:49,113 INFO L82 PathProgramCache]: Analyzing trace with hash 991929043, now seen corresponding path program 1 times [2020-08-22 19:06:49,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:49,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568608555] [2020-08-22 19:06:49,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:49,163 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:49,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:49,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:49,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568608555] [2020-08-22 19:06:49,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:49,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 19:06:49,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067138736] [2020-08-22 19:06:49,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 19:06:49,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:49,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 19:06:49,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 19:06:49,316 INFO L87 Difference]: Start difference. First operand 225 states and 243 transitions. Second operand 8 states. [2020-08-22 19:06:49,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:49,929 INFO L93 Difference]: Finished difference Result 321 states and 346 transitions. [2020-08-22 19:06:49,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 19:06:49,930 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-08-22 19:06:49,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:49,932 INFO L225 Difference]: With dead ends: 321 [2020-08-22 19:06:49,932 INFO L226 Difference]: Without dead ends: 291 [2020-08-22 19:06:49,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-08-22 19:06:49,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-08-22 19:06:49,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 275. [2020-08-22 19:06:49,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-08-22 19:06:49,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 301 transitions. [2020-08-22 19:06:49,988 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 301 transitions. Word has length 53 [2020-08-22 19:06:49,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:49,988 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 301 transitions. [2020-08-22 19:06:49,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 19:06:49,988 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 301 transitions. [2020-08-22 19:06:49,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-22 19:06:49,989 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:49,990 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:06:49,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 19:06:49,990 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]=== [2020-08-22 19:06:49,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:49,991 INFO L82 PathProgramCache]: Analyzing trace with hash -604385608, now seen corresponding path program 1 times [2020-08-22 19:06:49,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:49,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354646387] [2020-08-22 19:06:49,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:49,995 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:50,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:50,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:50,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354646387] [2020-08-22 19:06:50,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:50,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 19:06:50,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968518442] [2020-08-22 19:06:50,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 19:06:50,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:50,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 19:06:50,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-22 19:06:50,093 INFO L87 Difference]: Start difference. First operand 275 states and 301 transitions. Second operand 8 states. [2020-08-22 19:06:50,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:50,667 INFO L93 Difference]: Finished difference Result 296 states and 324 transitions. [2020-08-22 19:06:50,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 19:06:50,668 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-08-22 19:06:50,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:50,670 INFO L225 Difference]: With dead ends: 296 [2020-08-22 19:06:50,670 INFO L226 Difference]: Without dead ends: 291 [2020-08-22 19:06:50,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-22 19:06:50,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-08-22 19:06:50,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 268. [2020-08-22 19:06:50,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-22 19:06:50,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 293 transitions. [2020-08-22 19:06:50,713 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 293 transitions. Word has length 54 [2020-08-22 19:06:50,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:50,714 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 293 transitions. [2020-08-22 19:06:50,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 19:06:50,714 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 293 transitions. [2020-08-22 19:06:50,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 19:06:50,715 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:50,716 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, 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] [2020-08-22 19:06:50,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 19:06:50,716 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]=== [2020-08-22 19:06:50,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:50,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1636675303, now seen corresponding path program 1 times [2020-08-22 19:06:50,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:50,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191634066] [2020-08-22 19:06:50,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:50,721 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:51,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:51,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:51,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191634066] [2020-08-22 19:06:51,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:51,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-22 19:06:51,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712688437] [2020-08-22 19:06:51,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 19:06:51,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:51,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 19:06:51,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-08-22 19:06:51,081 INFO L87 Difference]: Start difference. First operand 268 states and 293 transitions. Second operand 15 states. [2020-08-22 19:06:53,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:53,301 INFO L93 Difference]: Finished difference Result 722 states and 782 transitions. [2020-08-22 19:06:53,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 19:06:53,302 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-08-22 19:06:53,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:53,306 INFO L225 Difference]: With dead ends: 722 [2020-08-22 19:06:53,306 INFO L226 Difference]: Without dead ends: 719 [2020-08-22 19:06:53,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=272, Invalid=850, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 19:06:53,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2020-08-22 19:06:53,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 272. [2020-08-22 19:06:53,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-08-22 19:06:53,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 297 transitions. [2020-08-22 19:06:53,381 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 297 transitions. Word has length 57 [2020-08-22 19:06:53,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:53,382 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 297 transitions. [2020-08-22 19:06:53,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 19:06:53,382 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 297 transitions. [2020-08-22 19:06:53,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 19:06:53,383 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:53,383 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, 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] [2020-08-22 19:06:53,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 19:06:53,384 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]=== [2020-08-22 19:06:53,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:53,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1939208096, now seen corresponding path program 1 times [2020-08-22 19:06:53,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:53,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904001178] [2020-08-22 19:06:53,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:53,404 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:53,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:53,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:53,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904001178] [2020-08-22 19:06:53,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:53,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 19:06:53,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879425660] [2020-08-22 19:06:53,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 19:06:53,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:53,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 19:06:53,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:06:53,473 INFO L87 Difference]: Start difference. First operand 272 states and 297 transitions. Second operand 4 states. [2020-08-22 19:06:53,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:53,852 INFO L93 Difference]: Finished difference Result 277 states and 302 transitions. [2020-08-22 19:06:53,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 19:06:53,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-08-22 19:06:53,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:53,855 INFO L225 Difference]: With dead ends: 277 [2020-08-22 19:06:53,855 INFO L226 Difference]: Without dead ends: 275 [2020-08-22 19:06:53,858 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 [2020-08-22 19:06:53,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-08-22 19:06:53,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 270. [2020-08-22 19:06:53,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-08-22 19:06:53,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 295 transitions. [2020-08-22 19:06:53,941 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 295 transitions. Word has length 58 [2020-08-22 19:06:53,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:53,942 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 295 transitions. [2020-08-22 19:06:53,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 19:06:53,942 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 295 transitions. [2020-08-22 19:06:53,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 19:06:53,948 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:53,948 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:06:53,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 19:06:53,949 INFO L427 AbstractCegarLoop]: === Iteration 16 === [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]=== [2020-08-22 19:06:53,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:53,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1792411396, now seen corresponding path program 1 times [2020-08-22 19:06:53,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:53,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318254339] [2020-08-22 19:06:53,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:53,966 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:54,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:54,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:54,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318254339] [2020-08-22 19:06:54,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:54,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 19:06:54,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816344579] [2020-08-22 19:06:54,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 19:06:54,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:54,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 19:06:54,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 19:06:54,099 INFO L87 Difference]: Start difference. First operand 270 states and 295 transitions. Second operand 7 states. [2020-08-22 19:06:54,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:54,795 INFO L93 Difference]: Finished difference Result 421 states and 458 transitions. [2020-08-22 19:06:54,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 19:06:54,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-08-22 19:06:54,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:54,798 INFO L225 Difference]: With dead ends: 421 [2020-08-22 19:06:54,798 INFO L226 Difference]: Without dead ends: 312 [2020-08-22 19:06:54,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-08-22 19:06:54,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-08-22 19:06:54,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 270. [2020-08-22 19:06:54,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-08-22 19:06:54,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 293 transitions. [2020-08-22 19:06:54,873 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 293 transitions. Word has length 59 [2020-08-22 19:06:54,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:54,874 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 293 transitions. [2020-08-22 19:06:54,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 19:06:54,874 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 293 transitions. [2020-08-22 19:06:54,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 19:06:54,876 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:54,876 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, 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] [2020-08-22 19:06:54,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 19:06:54,876 INFO L427 AbstractCegarLoop]: === Iteration 17 === [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]=== [2020-08-22 19:06:54,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:54,877 INFO L82 PathProgramCache]: Analyzing trace with hash -984681049, now seen corresponding path program 1 times [2020-08-22 19:06:54,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:54,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187990083] [2020-08-22 19:06:54,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:54,889 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:55,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:55,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187990083] [2020-08-22 19:06:55,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:55,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 19:06:55,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096522959] [2020-08-22 19:06:55,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 19:06:55,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:55,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 19:06:55,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-08-22 19:06:55,062 INFO L87 Difference]: Start difference. First operand 270 states and 293 transitions. Second operand 13 states. [2020-08-22 19:06:56,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:56,378 INFO L93 Difference]: Finished difference Result 564 states and 600 transitions. [2020-08-22 19:06:56,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 19:06:56,379 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2020-08-22 19:06:56,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:56,382 INFO L225 Difference]: With dead ends: 564 [2020-08-22 19:06:56,382 INFO L226 Difference]: Without dead ends: 508 [2020-08-22 19:06:56,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-08-22 19:06:56,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-08-22 19:06:56,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 279. [2020-08-22 19:06:56,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-08-22 19:06:56,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 301 transitions. [2020-08-22 19:06:56,468 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 301 transitions. Word has length 62 [2020-08-22 19:06:56,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:56,468 INFO L479 AbstractCegarLoop]: Abstraction has 279 states and 301 transitions. [2020-08-22 19:06:56,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 19:06:56,468 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 301 transitions. [2020-08-22 19:06:56,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-22 19:06:56,470 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:56,470 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, 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, 1, 1] [2020-08-22 19:06:56,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 19:06:56,471 INFO L427 AbstractCegarLoop]: === Iteration 18 === [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]=== [2020-08-22 19:06:56,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:56,471 INFO L82 PathProgramCache]: Analyzing trace with hash -649286859, now seen corresponding path program 1 times [2020-08-22 19:06:56,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:56,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413967571] [2020-08-22 19:06:56,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:56,478 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:56,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:56,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:56,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413967571] [2020-08-22 19:06:56,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:56,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 19:06:56,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457278295] [2020-08-22 19:06:56,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 19:06:56,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:56,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 19:06:56,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:06:56,533 INFO L87 Difference]: Start difference. First operand 279 states and 301 transitions. Second operand 4 states. [2020-08-22 19:06:56,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:56,971 INFO L93 Difference]: Finished difference Result 457 states and 503 transitions. [2020-08-22 19:06:56,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 19:06:56,971 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-08-22 19:06:56,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:56,974 INFO L225 Difference]: With dead ends: 457 [2020-08-22 19:06:56,974 INFO L226 Difference]: Without dead ends: 360 [2020-08-22 19:06:56,976 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 [2020-08-22 19:06:56,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-08-22 19:06:57,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 312. [2020-08-22 19:06:57,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-08-22 19:06:57,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 340 transitions. [2020-08-22 19:06:57,060 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 340 transitions. Word has length 64 [2020-08-22 19:06:57,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:57,060 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 340 transitions. [2020-08-22 19:06:57,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 19:06:57,060 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 340 transitions. [2020-08-22 19:06:57,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-22 19:06:57,062 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:57,062 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1] [2020-08-22 19:06:57,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 19:06:57,063 INFO L427 AbstractCegarLoop]: === Iteration 19 === [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]=== [2020-08-22 19:06:57,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:57,063 INFO L82 PathProgramCache]: Analyzing trace with hash -201437452, now seen corresponding path program 1 times [2020-08-22 19:06:57,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:57,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358381334] [2020-08-22 19:06:57,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:57,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-22 19:06:57,075 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:413) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:293) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-08-22 19:06:57,083 INFO L168 Benchmark]: Toolchain (without parser) took 20549.14 ms. Allocated memory was 136.8 MB in the beginning and 472.9 MB in the end (delta: 336.1 MB). Free memory was 99.7 MB in the beginning and 254.4 MB in the end (delta: -154.7 MB). Peak memory consumption was 181.4 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:57,084 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 19:06:57,085 INFO L168 Benchmark]: CACSL2BoogieTranslator took 814.01 ms. Allocated memory was 136.8 MB in the beginning and 201.9 MB in the end (delta: 65.0 MB). Free memory was 99.3 MB in the beginning and 169.3 MB in the end (delta: -70.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:57,085 INFO L168 Benchmark]: Boogie Preprocessor took 99.68 ms. Allocated memory is still 201.9 MB. Free memory was 169.3 MB in the beginning and 165.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:57,086 INFO L168 Benchmark]: RCFGBuilder took 1021.40 ms. Allocated memory is still 201.9 MB. Free memory was 165.7 MB in the beginning and 102.6 MB in the end (delta: 63.1 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:57,086 INFO L168 Benchmark]: TraceAbstraction took 18607.06 ms. Allocated memory was 201.9 MB in the beginning and 472.9 MB in the end (delta: 271.1 MB). Free memory was 101.9 MB in the beginning and 254.4 MB in the end (delta: -152.5 MB). Peak memory consumption was 118.6 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:57,090 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 814.01 ms. Allocated memory was 136.8 MB in the beginning and 201.9 MB in the end (delta: 65.0 MB). Free memory was 99.3 MB in the beginning and 169.3 MB in the end (delta: -70.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.68 ms. Allocated memory is still 201.9 MB. Free memory was 169.3 MB in the beginning and 165.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1021.40 ms. Allocated memory is still 201.9 MB. Free memory was 165.7 MB in the beginning and 102.6 MB in the end (delta: 63.1 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18607.06 ms. Allocated memory was 201.9 MB in the beginning and 472.9 MB in the end (delta: 271.1 MB). Free memory was 101.9 MB in the beginning and 254.4 MB in the end (delta: -152.5 MB). Peak memory consumption was 118.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:413) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...