/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/dll-rb-sentinel-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:25:19,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:25:19,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:25:19,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:25:19,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:25:19,298 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:25:19,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:25:19,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:25:19,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:25:19,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:25:19,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:25:19,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:25:19,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:25:19,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:25:19,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:25:19,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:25:19,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:25:19,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:25:19,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:25:19,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:25:19,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:25:19,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:25:19,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:25:19,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:25:19,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:25:19,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:25:19,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:25:19,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:25:19,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:25:19,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:25:19,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:25:19,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:25:19,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:25:19,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:25:19,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:25:19,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:25:19,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:25:19,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:25:19,361 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:25:19,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:25:19,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:25:19,364 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:25:19,387 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:25:19,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:25:19,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:25:19,393 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:25:19,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:25:19,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:25:19,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:25:19,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:25:19,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:25:19,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:25:19,398 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:25:19,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:25:19,398 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:25:19,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:25:19,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:25:19,399 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:25:19,399 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:25:19,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:25:19,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:25:19,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:25:19,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:25:19,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:25:19,403 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:25:19,687 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:25:19,707 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:25:19,711 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:25:19,712 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:25:19,713 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:25:19,713 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-07-07 13:25:19,779 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cc0cc8dc/ad433d3557724dba8f8c4294fc956787/FLAGb8e52b409 [2020-07-07 13:25:20,354 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:25:20,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-07-07 13:25:20,368 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cc0cc8dc/ad433d3557724dba8f8c4294fc956787/FLAGb8e52b409 [2020-07-07 13:25:20,624 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cc0cc8dc/ad433d3557724dba8f8c4294fc956787 [2020-07-07 13:25:20,634 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:25:20,636 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:25:20,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:25:20,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:25:20,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:25:20,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:25:20" (1/1) ... [2020-07-07 13:25:20,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2512ac3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:20, skipping insertion in model container [2020-07-07 13:25:20,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:25:20" (1/1) ... [2020-07-07 13:25:20,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:25:20,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:25:21,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:25:21,183 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:25:21,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:25:21,294 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:25:21,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:21 WrapperNode [2020-07-07 13:25:21,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:25:21,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:25:21,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:25:21,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:25:21,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:21" (1/1) ... [2020-07-07 13:25:21,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:21" (1/1) ... [2020-07-07 13:25:21,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:21" (1/1) ... [2020-07-07 13:25:21,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:21" (1/1) ... [2020-07-07 13:25:21,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:21" (1/1) ... [2020-07-07 13:25:21,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:21" (1/1) ... [2020-07-07 13:25:21,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:21" (1/1) ... [2020-07-07 13:25:21,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:25:21,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:25:21,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:25:21,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:25:21,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:25:21,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:25:21,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:25:21,440 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:25:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-07 13:25:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-07 13:25:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-07 13:25:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-07 13:25:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-07 13:25:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-07 13:25:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-07 13:25:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-07 13:25:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-07 13:25:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-07 13:25:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-07 13:25:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-07 13:25:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-07 13:25:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-07 13:25:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-07 13:25:21,445 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-07 13:25:21,445 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-07 13:25:21,446 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-07 13:25:21,446 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-07 13:25:21,448 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-07 13:25:21,449 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-07 13:25:21,449 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-07 13:25:21,449 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-07 13:25:21,449 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-07 13:25:21,449 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-07 13:25:21,449 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-07 13:25:21,450 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-07 13:25:21,450 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-07 13:25:21,450 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-07 13:25:21,450 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-07 13:25:21,450 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-07 13:25:21,450 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-07 13:25:21,451 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-07 13:25:21,451 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-07 13:25:21,451 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-07 13:25:21,451 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-07 13:25:21,451 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-07 13:25:21,451 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-07 13:25:21,452 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-07 13:25:21,452 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-07 13:25:21,452 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-07 13:25:21,452 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-07 13:25:21,452 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-07 13:25:21,452 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-07 13:25:21,452 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-07 13:25:21,453 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-07 13:25:21,453 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-07 13:25:21,453 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-07 13:25:21,453 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-07 13:25:21,454 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-07 13:25:21,454 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 13:25:21,455 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 13:25:21,455 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-07 13:25:21,455 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 13:25:21,455 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-07 13:25:21,455 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-07 13:25:21,455 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-07 13:25:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-07 13:25:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-07 13:25:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 13:25:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-07 13:25:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-07 13:25:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-07 13:25:21,456 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-07 13:25:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-07 13:25:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-07 13:25:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-07 13:25:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-07 13:25:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-07 13:25:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-07 13:25:21,457 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-07 13:25:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-07 13:25:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-07 13:25:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-07 13:25:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-07 13:25:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-07 13:25:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-07 13:25:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-07 13:25:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-07 13:25:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-07 13:25:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-07 13:25:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-07 13:25:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-07 13:25:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-07 13:25:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-07 13:25:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-07 13:25:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-07 13:25:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-07 13:25:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-07 13:25:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-07 13:25:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-07 13:25:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-07 13:25:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-07 13:25:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-07 13:25:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-07 13:25:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-07 13:25:21,464 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-07 13:25:21,464 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-07 13:25:21,464 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-07 13:25:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-07 13:25:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-07 13:25:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-07 13:25:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-07 13:25:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:25:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:25:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:25:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 13:25:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 13:25:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:25:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 13:25:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:25:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:25:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:25:21,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:25:22,095 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:25:22,095 INFO L295 CfgBuilder]: Removed 17 assume(true) statements. [2020-07-07 13:25:22,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:25:22 BoogieIcfgContainer [2020-07-07 13:25:22,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:25:22,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:25:22,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:25:22,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:25:22,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:25:20" (1/3) ... [2020-07-07 13:25:22,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418c68fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:25:22, skipping insertion in model container [2020-07-07 13:25:22,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:21" (2/3) ... [2020-07-07 13:25:22,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418c68fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:25:22, skipping insertion in model container [2020-07-07 13:25:22,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:25:22" (3/3) ... [2020-07-07 13:25:22,109 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2020-07-07 13:25:22,120 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:25:22,129 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-07-07 13:25:22,144 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-07-07 13:25:22,165 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:25:22,166 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:25:22,166 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:25:22,166 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:25:22,166 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:25:22,167 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:25:22,167 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:25:22,167 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:25:22,186 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-07-07 13:25:22,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-07 13:25:22,197 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:22,198 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] [2020-07-07 13:25:22,199 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:22,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:22,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1523709425, now seen corresponding path program 1 times [2020-07-07 13:25:22,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:22,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811819857] [2020-07-07 13:25:22,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:22,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:22,472 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:22,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811819857] [2020-07-07 13:25:22,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:22,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:25:22,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526425145] [2020-07-07 13:25:22,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:25:22,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:22,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:25:22,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:25:22,521 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 3 states. [2020-07-07 13:25:22,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:22,827 INFO L93 Difference]: Finished difference Result 228 states and 286 transitions. [2020-07-07 13:25:22,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:25:22,829 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-07 13:25:22,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:22,841 INFO L225 Difference]: With dead ends: 228 [2020-07-07 13:25:22,842 INFO L226 Difference]: Without dead ends: 100 [2020-07-07 13:25:22,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:25:22,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-07-07 13:25:22,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-07-07 13:25:22,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-07-07 13:25:22,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 103 transitions. [2020-07-07 13:25:22,902 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 103 transitions. Word has length 23 [2020-07-07 13:25:22,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:22,903 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 103 transitions. [2020-07-07 13:25:22,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:25:22,903 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 103 transitions. [2020-07-07 13:25:22,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-07 13:25:22,904 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:22,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:22,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:25:22,905 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:22,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:22,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1887154194, now seen corresponding path program 1 times [2020-07-07 13:25:22,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:22,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186081498] [2020-07-07 13:25:22,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:23,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:23,060 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:23,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186081498] [2020-07-07 13:25:23,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:23,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 13:25:23,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500717114] [2020-07-07 13:25:23,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 13:25:23,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:23,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 13:25:23,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:25:23,064 INFO L87 Difference]: Start difference. First operand 100 states and 103 transitions. Second operand 8 states. [2020-07-07 13:25:23,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:23,424 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2020-07-07 13:25:23,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 13:25:23,425 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-07-07 13:25:23,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:23,427 INFO L225 Difference]: With dead ends: 121 [2020-07-07 13:25:23,428 INFO L226 Difference]: Without dead ends: 119 [2020-07-07 13:25:23,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:25:23,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-07-07 13:25:23,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 98. [2020-07-07 13:25:23,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-07-07 13:25:23,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2020-07-07 13:25:23,466 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 25 [2020-07-07 13:25:23,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:23,467 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2020-07-07 13:25:23,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 13:25:23,468 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2020-07-07 13:25:23,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-07 13:25:23,469 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:23,469 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] [2020-07-07 13:25:23,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:25:23,470 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:23,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:23,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1939387545, now seen corresponding path program 1 times [2020-07-07 13:25:23,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:23,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561750361] [2020-07-07 13:25:23,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:23,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:23,772 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:23,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561750361] [2020-07-07 13:25:23,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:23,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-07 13:25:23,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916826917] [2020-07-07 13:25:23,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 13:25:23,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:23,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 13:25:23,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-07-07 13:25:23,775 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand 11 states. [2020-07-07 13:25:24,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:24,348 INFO L93 Difference]: Finished difference Result 148 states and 154 transitions. [2020-07-07 13:25:24,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-07 13:25:24,349 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-07-07 13:25:24,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:24,351 INFO L225 Difference]: With dead ends: 148 [2020-07-07 13:25:24,351 INFO L226 Difference]: Without dead ends: 145 [2020-07-07 13:25:24,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2020-07-07 13:25:24,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-07-07 13:25:24,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 107. [2020-07-07 13:25:24,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-07-07 13:25:24,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-07-07 13:25:24,375 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 29 [2020-07-07 13:25:24,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:24,375 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-07-07 13:25:24,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 13:25:24,376 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-07-07 13:25:24,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-07 13:25:24,377 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:24,377 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] [2020-07-07 13:25:24,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:25:24,378 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:24,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:24,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1026590761, now seen corresponding path program 1 times [2020-07-07 13:25:24,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:24,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859975572] [2020-07-07 13:25:24,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:24,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:24,538 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:24,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859975572] [2020-07-07 13:25:24,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:24,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:25:24,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356221073] [2020-07-07 13:25:24,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:25:24,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:24,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:25:24,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:25:24,546 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 6 states. [2020-07-07 13:25:24,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:24,839 INFO L93 Difference]: Finished difference Result 140 states and 146 transitions. [2020-07-07 13:25:24,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 13:25:24,840 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-07-07 13:25:24,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:24,841 INFO L225 Difference]: With dead ends: 140 [2020-07-07 13:25:24,841 INFO L226 Difference]: Without dead ends: 118 [2020-07-07 13:25:24,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:25:24,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-07-07 13:25:24,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 110. [2020-07-07 13:25:24,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-07-07 13:25:24,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2020-07-07 13:25:24,866 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 38 [2020-07-07 13:25:24,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:24,868 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 114 transitions. [2020-07-07 13:25:24,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:25:24,869 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 114 transitions. [2020-07-07 13:25:24,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-07 13:25:24,870 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:24,870 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] [2020-07-07 13:25:24,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:25:24,871 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:24,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:24,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1637573847, now seen corresponding path program 1 times [2020-07-07 13:25:24,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:24,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940686897] [2020-07-07 13:25:24,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:24,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:24,984 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:24,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940686897] [2020-07-07 13:25:24,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:24,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 13:25:24,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093869616] [2020-07-07 13:25:24,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 13:25:24,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:24,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 13:25:24,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:25:24,987 INFO L87 Difference]: Start difference. First operand 110 states and 114 transitions. Second operand 5 states. [2020-07-07 13:25:25,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:25,206 INFO L93 Difference]: Finished difference Result 115 states and 119 transitions. [2020-07-07 13:25:25,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:25:25,207 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-07-07 13:25:25,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:25,208 INFO L225 Difference]: With dead ends: 115 [2020-07-07 13:25:25,208 INFO L226 Difference]: Without dead ends: 112 [2020-07-07 13:25:25,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:25:25,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-07-07 13:25:25,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 107. [2020-07-07 13:25:25,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-07-07 13:25:25,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-07-07 13:25:25,230 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 38 [2020-07-07 13:25:25,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:25,230 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-07-07 13:25:25,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 13:25:25,231 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-07-07 13:25:25,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-07 13:25:25,232 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:25,232 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] [2020-07-07 13:25:25,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 13:25:25,233 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:25,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:25,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1162057661, now seen corresponding path program 1 times [2020-07-07 13:25:25,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:25,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212052921] [2020-07-07 13:25:25,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:25,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:25,320 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:25,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212052921] [2020-07-07 13:25:25,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:25,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 13:25:25,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050863578] [2020-07-07 13:25:25,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 13:25:25,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:25,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 13:25:25,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:25:25,323 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 5 states. [2020-07-07 13:25:25,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:25,551 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2020-07-07 13:25:25,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:25:25,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-07-07 13:25:25,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:25,553 INFO L225 Difference]: With dead ends: 110 [2020-07-07 13:25:25,553 INFO L226 Difference]: Without dead ends: 107 [2020-07-07 13:25:25,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:25:25,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-07-07 13:25:25,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2020-07-07 13:25:25,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-07-07 13:25:25,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2020-07-07 13:25:25,593 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 42 [2020-07-07 13:25:25,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:25,593 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2020-07-07 13:25:25,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 13:25:25,594 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2020-07-07 13:25:25,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-07 13:25:25,603 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:25,603 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] [2020-07-07 13:25:25,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 13:25:25,604 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:25,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:25,604 INFO L82 PathProgramCache]: Analyzing trace with hash -41137780, now seen corresponding path program 1 times [2020-07-07 13:25:25,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:25,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738890409] [2020-07-07 13:25:25,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:25,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:25,856 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:25,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738890409] [2020-07-07 13:25:25,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:25,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 13:25:25,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617636846] [2020-07-07 13:25:25,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 13:25:25,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:25,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 13:25:25,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-07-07 13:25:25,858 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand 14 states. [2020-07-07 13:25:26,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:26,639 INFO L93 Difference]: Finished difference Result 154 states and 160 transitions. [2020-07-07 13:25:26,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-07 13:25:26,647 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2020-07-07 13:25:26,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:26,649 INFO L225 Difference]: With dead ends: 154 [2020-07-07 13:25:26,649 INFO L226 Difference]: Without dead ends: 152 [2020-07-07 13:25:26,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2020-07-07 13:25:26,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-07-07 13:25:26,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 127. [2020-07-07 13:25:26,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-07-07 13:25:26,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 132 transitions. [2020-07-07 13:25:26,724 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 132 transitions. Word has length 44 [2020-07-07 13:25:26,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:26,724 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 132 transitions. [2020-07-07 13:25:26,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 13:25:26,725 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 132 transitions. [2020-07-07 13:25:26,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-07 13:25:26,727 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:26,728 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-07 13:25:26,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 13:25:26,729 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:26,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:26,729 INFO L82 PathProgramCache]: Analyzing trace with hash 784866741, now seen corresponding path program 1 times [2020-07-07 13:25:26,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:26,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440886832] [2020-07-07 13:25:26,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:26,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:26,888 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:26,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440886832] [2020-07-07 13:25:26,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:26,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 13:25:26,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734210573] [2020-07-07 13:25:26,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 13:25:26,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:26,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 13:25:26,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:25:26,891 INFO L87 Difference]: Start difference. First operand 127 states and 132 transitions. Second operand 7 states. [2020-07-07 13:25:27,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:27,259 INFO L93 Difference]: Finished difference Result 159 states and 165 transitions. [2020-07-07 13:25:27,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-07 13:25:27,260 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-07-07 13:25:27,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:27,261 INFO L225 Difference]: With dead ends: 159 [2020-07-07 13:25:27,261 INFO L226 Difference]: Without dead ends: 120 [2020-07-07 13:25:27,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:25:27,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-07-07 13:25:27,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-07-07 13:25:27,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-07-07 13:25:27,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2020-07-07 13:25:27,281 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 45 [2020-07-07 13:25:27,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:27,282 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 124 transitions. [2020-07-07 13:25:27,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 13:25:27,282 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 124 transitions. [2020-07-07 13:25:27,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-07 13:25:27,283 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:27,283 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] [2020-07-07 13:25:27,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 13:25:27,283 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:27,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:27,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1051665877, now seen corresponding path program 1 times [2020-07-07 13:25:27,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:27,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537172400] [2020-07-07 13:25:27,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:27,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:27,635 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:27,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537172400] [2020-07-07 13:25:27,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:27,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-07-07 13:25:27,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629312506] [2020-07-07 13:25:27,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-07 13:25:27,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:27,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-07 13:25:27,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2020-07-07 13:25:27,637 INFO L87 Difference]: Start difference. First operand 120 states and 124 transitions. Second operand 19 states. [2020-07-07 13:25:29,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:29,034 INFO L93 Difference]: Finished difference Result 187 states and 195 transitions. [2020-07-07 13:25:29,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-07 13:25:29,035 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 54 [2020-07-07 13:25:29,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:29,037 INFO L225 Difference]: With dead ends: 187 [2020-07-07 13:25:29,037 INFO L226 Difference]: Without dead ends: 185 [2020-07-07 13:25:29,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=294, Invalid=1112, Unknown=0, NotChecked=0, Total=1406 [2020-07-07 13:25:29,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-07-07 13:25:29,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 167. [2020-07-07 13:25:29,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-07-07 13:25:29,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 174 transitions. [2020-07-07 13:25:29,075 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 174 transitions. Word has length 54 [2020-07-07 13:25:29,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:29,076 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 174 transitions. [2020-07-07 13:25:29,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-07 13:25:29,077 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 174 transitions. [2020-07-07 13:25:29,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-07 13:25:29,078 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:29,078 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:29,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 13:25:29,079 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:29,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:29,079 INFO L82 PathProgramCache]: Analyzing trace with hash 999535374, now seen corresponding path program 1 times [2020-07-07 13:25:29,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:29,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057363009] [2020-07-07 13:25:29,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:29,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:29,905 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:29,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057363009] [2020-07-07 13:25:29,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:29,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-07-07 13:25:29,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808111973] [2020-07-07 13:25:29,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-07 13:25:29,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:29,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-07 13:25:29,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-07-07 13:25:29,908 INFO L87 Difference]: Start difference. First operand 167 states and 174 transitions. Second operand 19 states. [2020-07-07 13:25:31,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:31,128 INFO L93 Difference]: Finished difference Result 224 states and 233 transitions. [2020-07-07 13:25:31,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-07 13:25:31,129 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2020-07-07 13:25:31,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:31,131 INFO L225 Difference]: With dead ends: 224 [2020-07-07 13:25:31,131 INFO L226 Difference]: Without dead ends: 221 [2020-07-07 13:25:31,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=311, Invalid=879, Unknown=0, NotChecked=0, Total=1190 [2020-07-07 13:25:31,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-07-07 13:25:31,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 177. [2020-07-07 13:25:31,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-07-07 13:25:31,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 185 transitions. [2020-07-07 13:25:31,161 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 185 transitions. Word has length 55 [2020-07-07 13:25:31,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:31,161 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 185 transitions. [2020-07-07 13:25:31,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-07 13:25:31,161 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 185 transitions. [2020-07-07 13:25:31,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-07 13:25:31,162 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:31,162 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:31,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 13:25:31,163 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:31,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:31,163 INFO L82 PathProgramCache]: Analyzing trace with hash 754417445, now seen corresponding path program 1 times [2020-07-07 13:25:31,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:31,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201787142] [2020-07-07 13:25:31,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:32,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:32,377 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:32,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201787142] [2020-07-07 13:25:32,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:32,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-07-07 13:25:32,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831816585] [2020-07-07 13:25:32,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-07 13:25:32,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:32,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-07 13:25:32,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2020-07-07 13:25:32,380 INFO L87 Difference]: Start difference. First operand 177 states and 185 transitions. Second operand 25 states. [2020-07-07 13:25:34,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:34,672 INFO L93 Difference]: Finished difference Result 254 states and 264 transitions. [2020-07-07 13:25:34,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-07 13:25:34,674 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 65 [2020-07-07 13:25:34,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:34,675 INFO L225 Difference]: With dead ends: 254 [2020-07-07 13:25:34,675 INFO L226 Difference]: Without dead ends: 251 [2020-07-07 13:25:34,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=531, Invalid=1821, Unknown=0, NotChecked=0, Total=2352 [2020-07-07 13:25:34,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-07-07 13:25:34,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 201. [2020-07-07 13:25:34,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-07-07 13:25:34,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 210 transitions. [2020-07-07 13:25:34,727 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 210 transitions. Word has length 65 [2020-07-07 13:25:34,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:34,727 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 210 transitions. [2020-07-07 13:25:34,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-07 13:25:34,728 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 210 transitions. [2020-07-07 13:25:34,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-07-07 13:25:34,729 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:34,729 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-07 13:25:34,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-07 13:25:34,729 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:34,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:34,730 INFO L82 PathProgramCache]: Analyzing trace with hash -736103817, now seen corresponding path program 1 times [2020-07-07 13:25:34,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:34,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941509781] [2020-07-07 13:25:34,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:34,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:34,907 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:34,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941509781] [2020-07-07 13:25:34,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:34,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 13:25:34,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817173794] [2020-07-07 13:25:34,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 13:25:34,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:34,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 13:25:34,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-07-07 13:25:34,910 INFO L87 Difference]: Start difference. First operand 201 states and 210 transitions. Second operand 10 states. [2020-07-07 13:25:35,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:35,501 INFO L93 Difference]: Finished difference Result 227 states and 237 transitions. [2020-07-07 13:25:35,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-07 13:25:35,502 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-07-07 13:25:35,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:35,504 INFO L225 Difference]: With dead ends: 227 [2020-07-07 13:25:35,504 INFO L226 Difference]: Without dead ends: 225 [2020-07-07 13:25:35,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2020-07-07 13:25:35,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-07-07 13:25:35,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 201. [2020-07-07 13:25:35,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-07-07 13:25:35,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 209 transitions. [2020-07-07 13:25:35,559 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 209 transitions. Word has length 70 [2020-07-07 13:25:35,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:35,559 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 209 transitions. [2020-07-07 13:25:35,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 13:25:35,560 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 209 transitions. [2020-07-07 13:25:35,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-07-07 13:25:35,561 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:35,561 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:35,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-07 13:25:35,562 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:35,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:35,562 INFO L82 PathProgramCache]: Analyzing trace with hash 715756074, now seen corresponding path program 1 times [2020-07-07 13:25:35,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:35,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134455139] [2020-07-07 13:25:35,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:35,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-07 13:25:35,575 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:442) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:277) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) 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) [2020-07-07 13:25:35,588 INFO L168 Benchmark]: Toolchain (without parser) took 14946.33 ms. Allocated memory was 145.8 MB in the beginning and 372.8 MB in the end (delta: 227.0 MB). Free memory was 102.9 MB in the beginning and 175.0 MB in the end (delta: -72.2 MB). Peak memory consumption was 154.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:35,590 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 145.8 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-07 13:25:35,591 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.69 ms. Allocated memory was 145.8 MB in the beginning and 203.9 MB in the end (delta: 58.2 MB). Free memory was 102.6 MB in the beginning and 171.2 MB in the end (delta: -68.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:35,592 INFO L168 Benchmark]: Boogie Preprocessor took 75.49 ms. Allocated memory is still 203.9 MB. Free memory was 171.2 MB in the beginning and 168.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:35,593 INFO L168 Benchmark]: RCFGBuilder took 729.37 ms. Allocated memory is still 203.9 MB. Free memory was 168.5 MB in the beginning and 111.5 MB in the end (delta: 57.0 MB). Peak memory consumption was 57.0 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:35,598 INFO L168 Benchmark]: TraceAbstraction took 13478.60 ms. Allocated memory was 203.9 MB in the beginning and 372.8 MB in the end (delta: 168.8 MB). Free memory was 110.8 MB in the beginning and 175.0 MB in the end (delta: -64.2 MB). Peak memory consumption was 104.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:35,604 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 145.8 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 657.69 ms. Allocated memory was 145.8 MB in the beginning and 203.9 MB in the end (delta: 58.2 MB). Free memory was 102.6 MB in the beginning and 171.2 MB in the end (delta: -68.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 75.49 ms. Allocated memory is still 203.9 MB. Free memory was 171.2 MB in the beginning and 168.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 729.37 ms. Allocated memory is still 203.9 MB. Free memory was 168.5 MB in the beginning and 111.5 MB in the end (delta: 57.0 MB). Peak memory consumption was 57.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13478.60 ms. Allocated memory was 203.9 MB in the beginning and 372.8 MB in the end (delta: 168.8 MB). Free memory was 110.8 MB in the beginning and 175.0 MB in the end (delta: -64.2 MB). Peak memory consumption was 104.6 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:442) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...