/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 0.1.25-267fbe0 [2020-07-17 13:29:57,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 13:29:57,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 13:29:57,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 13:29:57,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 13:29:57,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 13:29:57,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 13:29:57,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 13:29:57,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 13:29:57,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 13:29:57,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 13:29:57,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 13:29:57,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 13:29:57,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 13:29:57,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 13:29:57,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 13:29:57,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 13:29:57,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 13:29:57,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 13:29:57,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 13:29:57,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 13:29:57,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 13:29:57,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 13:29:57,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 13:29:57,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 13:29:57,482 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 13:29:57,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 13:29:57,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 13:29:57,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 13:29:57,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 13:29:57,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 13:29:57,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 13:29:57,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 13:29:57,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 13:29:57,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 13:29:57,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 13:29:57,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 13:29:57,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 13:29:57,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 13:29:57,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 13:29:57,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 13:29:57,502 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 13:29:57,521 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 13:29:57,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 13:29:57,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 13:29:57,523 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 13:29:57,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 13:29:57,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 13:29:57,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 13:29:57,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 13:29:57,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 13:29:57,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 13:29:57,525 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 13:29:57,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 13:29:57,526 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 13:29:57,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 13:29:57,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 13:29:57,527 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 13:29:57,527 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 13:29:57,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 13:29:57,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:29:57,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 13:29:57,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 13:29:57,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 13:29:57,528 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 13:29:57,796 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 13:29:57,818 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 13:29:57,823 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 13:29:57,824 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 13:29:57,825 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 13:29:57,826 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-07-17 13:29:57,901 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d27368c25/a93c27d7ef41490188e4db9b4b21d641/FLAG6fca3960f [2020-07-17 13:29:58,440 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 13:29:58,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-07-17 13:29:58,452 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d27368c25/a93c27d7ef41490188e4db9b4b21d641/FLAG6fca3960f [2020-07-17 13:29:58,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d27368c25/a93c27d7ef41490188e4db9b4b21d641 [2020-07-17 13:29:58,725 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 13:29:58,728 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 13:29:58,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 13:29:58,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 13:29:58,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 13:29:58,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:29:58" (1/1) ... [2020-07-17 13:29:58,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fdd7274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:58, skipping insertion in model container [2020-07-17 13:29:58,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:29:58" (1/1) ... [2020-07-17 13:29:58,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 13:29:58,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 13:29:59,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:29:59,236 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 13:29:59,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:29:59,332 INFO L208 MainTranslator]: Completed translation [2020-07-17 13:29:59,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:59 WrapperNode [2020-07-17 13:29:59,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 13:29:59,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 13:29:59,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 13:29:59,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 13:29:59,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:59" (1/1) ... [2020-07-17 13:29:59,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:59" (1/1) ... [2020-07-17 13:29:59,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:59" (1/1) ... [2020-07-17 13:29:59,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:59" (1/1) ... [2020-07-17 13:29:59,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:59" (1/1) ... [2020-07-17 13:29:59,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:59" (1/1) ... [2020-07-17 13:29:59,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:59" (1/1) ... [2020-07-17 13:29:59,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 13:29:59,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 13:29:59,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 13:29:59,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 13:29:59,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:29:59,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 13:29:59,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 13:29:59,494 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 13:29:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-17 13:29:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-17 13:29:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-17 13:29:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-17 13:29:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-17 13:29:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-17 13:29:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-17 13:29:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-17 13:29:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-17 13:29:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-17 13:29:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-17 13:29:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-17 13:29:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-17 13:29:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-17 13:29:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-17 13:29:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-17 13:29:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-17 13:29:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-17 13:29:59,500 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-17 13:29:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-17 13:29:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-17 13:29:59,502 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-17 13:29:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-17 13:29:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-17 13:29:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-17 13:29:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-17 13:29:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-17 13:29:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-17 13:29:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-17 13:29:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-17 13:29:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-17 13:29:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-17 13:29:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-17 13:29:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-17 13:29:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-17 13:29:59,504 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-17 13:29:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-17 13:29:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-17 13:29:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-17 13:29:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-17 13:29:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-17 13:29:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-17 13:29:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-17 13:29:59,506 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-17 13:29:59,506 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-17 13:29:59,507 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-17 13:29:59,507 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-17 13:29:59,507 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-17 13:29:59,507 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-17 13:29:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-17 13:29:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 13:29:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-17 13:29:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-17 13:29:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-17 13:29:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-17 13:29:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-17 13:29:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-17 13:29:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-17 13:29:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-17 13:29:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 13:29:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-17 13:29:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-17 13:29:59,509 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-17 13:29:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-17 13:29:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-17 13:29:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-17 13:29:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-17 13:29:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-17 13:29:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-17 13:29:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-17 13:29:59,510 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-17 13:29:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-17 13:29:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-17 13:29:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-17 13:29:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-17 13:29:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-17 13:29:59,511 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-17 13:29:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-17 13:29:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-17 13:29:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-17 13:29:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-17 13:29:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-17 13:29:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-17 13:29:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-17 13:29:59,513 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-17 13:29:59,514 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-17 13:29:59,514 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-17 13:29:59,515 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-17 13:29:59,515 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-17 13:29:59,515 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-17 13:29:59,515 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-17 13:29:59,515 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-17 13:29:59,516 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-17 13:29:59,517 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-17 13:29:59,517 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-17 13:29:59,517 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-17 13:29:59,518 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-17 13:29:59,518 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-17 13:29:59,518 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-17 13:29:59,519 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-17 13:29:59,519 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-17 13:29:59,519 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-17 13:29:59,519 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-17 13:29:59,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 13:29:59,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 13:29:59,519 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 13:29:59,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 13:29:59,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-17 13:29:59,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 13:29:59,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-17 13:29:59,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 13:29:59,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 13:29:59,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 13:29:59,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 13:30:00,152 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 13:30:00,153 INFO L295 CfgBuilder]: Removed 17 assume(true) statements. [2020-07-17 13:30:00,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:30:00 BoogieIcfgContainer [2020-07-17 13:30:00,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 13:30:00,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 13:30:00,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 13:30:00,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 13:30:00,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 01:29:58" (1/3) ... [2020-07-17 13:30:00,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ceb9368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:30:00, skipping insertion in model container [2020-07-17 13:30:00,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:29:59" (2/3) ... [2020-07-17 13:30:00,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ceb9368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:30:00, skipping insertion in model container [2020-07-17 13:30:00,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:30:00" (3/3) ... [2020-07-17 13:30:00,168 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2020-07-17 13:30:00,180 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 13:30:00,189 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-07-17 13:30:00,204 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-07-17 13:30:00,228 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 13:30:00,228 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 13:30:00,229 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 13:30:00,229 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 13:30:00,229 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 13:30:00,229 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 13:30:00,230 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 13:30:00,230 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 13:30:00,253 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-07-17 13:30:00,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-17 13:30:00,264 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:00,265 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] [2020-07-17 13:30:00,266 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]=== [2020-07-17 13:30:00,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:00,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1523709425, now seen corresponding path program 1 times [2020-07-17 13:30:00,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:00,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197299230] [2020-07-17 13:30:00,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:00,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:00,552 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:00,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197299230] [2020-07-17 13:30:00,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:00,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:30:00,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526965735] [2020-07-17 13:30:00,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:30:00,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:00,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:30:00,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:30:00,578 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 3 states. [2020-07-17 13:30:00,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:00,866 INFO L93 Difference]: Finished difference Result 228 states and 286 transitions. [2020-07-17 13:30:00,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:30:00,868 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-17 13:30:00,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:00,879 INFO L225 Difference]: With dead ends: 228 [2020-07-17 13:30:00,879 INFO L226 Difference]: Without dead ends: 100 [2020-07-17 13:30:00,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:30:00,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-07-17 13:30:00,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-07-17 13:30:00,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-07-17 13:30:00,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 103 transitions. [2020-07-17 13:30:00,936 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 103 transitions. Word has length 23 [2020-07-17 13:30:00,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:00,936 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 103 transitions. [2020-07-17 13:30:00,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:30:00,937 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 103 transitions. [2020-07-17 13:30:00,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-17 13:30:00,938 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:00,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:00,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 13:30:00,939 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]=== [2020-07-17 13:30:00,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:00,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1887154194, now seen corresponding path program 1 times [2020-07-17 13:30:00,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:00,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386615058] [2020-07-17 13:30:00,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:01,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:01,079 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:01,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386615058] [2020-07-17 13:30:01,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:01,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-17 13:30:01,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320201695] [2020-07-17 13:30:01,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 13:30:01,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:01,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 13:30:01,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-17 13:30:01,082 INFO L87 Difference]: Start difference. First operand 100 states and 103 transitions. Second operand 8 states. [2020-07-17 13:30:01,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:01,425 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2020-07-17 13:30:01,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-17 13:30:01,425 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-07-17 13:30:01,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:01,427 INFO L225 Difference]: With dead ends: 121 [2020-07-17 13:30:01,428 INFO L226 Difference]: Without dead ends: 119 [2020-07-17 13:30:01,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-07-17 13:30:01,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-07-17 13:30:01,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 98. [2020-07-17 13:30:01,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-07-17 13:30:01,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2020-07-17 13:30:01,449 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 25 [2020-07-17 13:30:01,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:01,450 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2020-07-17 13:30:01,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 13:30:01,450 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2020-07-17 13:30:01,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-17 13:30:01,451 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:01,451 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] [2020-07-17 13:30:01,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 13:30:01,452 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]=== [2020-07-17 13:30:01,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:01,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1939387545, now seen corresponding path program 1 times [2020-07-17 13:30:01,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:01,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779052694] [2020-07-17 13:30:01,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:01,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:01,707 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:01,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779052694] [2020-07-17 13:30:01,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:01,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-17 13:30:01,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392024056] [2020-07-17 13:30:01,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 13:30:01,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:01,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 13:30:01,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-17 13:30:01,710 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand 9 states. [2020-07-17 13:30:02,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:02,107 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2020-07-17 13:30:02,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-17 13:30:02,108 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-07-17 13:30:02,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:02,110 INFO L225 Difference]: With dead ends: 146 [2020-07-17 13:30:02,110 INFO L226 Difference]: Without dead ends: 143 [2020-07-17 13:30:02,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-07-17 13:30:02,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-07-17 13:30:02,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 107. [2020-07-17 13:30:02,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-07-17 13:30:02,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-07-17 13:30:02,134 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 29 [2020-07-17 13:30:02,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:02,134 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-07-17 13:30:02,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 13:30:02,134 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-07-17 13:30:02,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-17 13:30:02,136 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:02,136 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] [2020-07-17 13:30:02,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 13:30:02,137 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]=== [2020-07-17 13:30:02,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:02,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1026590761, now seen corresponding path program 1 times [2020-07-17 13:30:02,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:02,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503393062] [2020-07-17 13:30:02,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:02,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:02,309 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:02,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503393062] [2020-07-17 13:30:02,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:02,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 13:30:02,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227420495] [2020-07-17 13:30:02,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 13:30:02,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:02,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 13:30:02,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 13:30:02,311 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 6 states. [2020-07-17 13:30:02,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:02,561 INFO L93 Difference]: Finished difference Result 140 states and 146 transitions. [2020-07-17 13:30:02,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-17 13:30:02,561 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-07-17 13:30:02,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:02,563 INFO L225 Difference]: With dead ends: 140 [2020-07-17 13:30:02,563 INFO L226 Difference]: Without dead ends: 118 [2020-07-17 13:30:02,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-17 13:30:02,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-07-17 13:30:02,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 110. [2020-07-17 13:30:02,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-07-17 13:30:02,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2020-07-17 13:30:02,583 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 38 [2020-07-17 13:30:02,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:02,584 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 114 transitions. [2020-07-17 13:30:02,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 13:30:02,584 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 114 transitions. [2020-07-17 13:30:02,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-17 13:30:02,585 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:02,585 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] [2020-07-17 13:30:02,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 13:30:02,586 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]=== [2020-07-17 13:30:02,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:02,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1637573847, now seen corresponding path program 1 times [2020-07-17 13:30:02,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:02,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529132219] [2020-07-17 13:30:02,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:02,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:02,648 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:02,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529132219] [2020-07-17 13:30:02,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:02,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 13:30:02,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84572944] [2020-07-17 13:30:02,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 13:30:02,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:02,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 13:30:02,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 13:30:02,651 INFO L87 Difference]: Start difference. First operand 110 states and 114 transitions. Second operand 5 states. [2020-07-17 13:30:02,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:02,857 INFO L93 Difference]: Finished difference Result 115 states and 119 transitions. [2020-07-17 13:30:02,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 13:30:02,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-07-17 13:30:02,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:02,859 INFO L225 Difference]: With dead ends: 115 [2020-07-17 13:30:02,859 INFO L226 Difference]: Without dead ends: 112 [2020-07-17 13:30:02,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 13:30:02,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-07-17 13:30:02,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 107. [2020-07-17 13:30:02,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-07-17 13:30:02,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-07-17 13:30:02,876 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 38 [2020-07-17 13:30:02,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:02,877 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-07-17 13:30:02,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 13:30:02,877 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-07-17 13:30:02,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-17 13:30:02,879 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:02,879 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] [2020-07-17 13:30:02,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 13:30:02,879 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]=== [2020-07-17 13:30:02,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:02,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1162057661, now seen corresponding path program 1 times [2020-07-17 13:30:02,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:02,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179929045] [2020-07-17 13:30:02,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:02,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:02,979 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:02,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179929045] [2020-07-17 13:30:02,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:02,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 13:30:02,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111688053] [2020-07-17 13:30:02,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 13:30:02,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:02,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 13:30:02,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 13:30:02,981 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 5 states. [2020-07-17 13:30:03,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:03,194 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2020-07-17 13:30:03,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 13:30:03,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-07-17 13:30:03,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:03,201 INFO L225 Difference]: With dead ends: 110 [2020-07-17 13:30:03,201 INFO L226 Difference]: Without dead ends: 107 [2020-07-17 13:30:03,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 13:30:03,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-07-17 13:30:03,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 104. [2020-07-17 13:30:03,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-07-17 13:30:03,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2020-07-17 13:30:03,228 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 42 [2020-07-17 13:30:03,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:03,228 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2020-07-17 13:30:03,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 13:30:03,229 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2020-07-17 13:30:03,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-17 13:30:03,233 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:03,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:03,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 13:30:03,234 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]=== [2020-07-17 13:30:03,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:03,239 INFO L82 PathProgramCache]: Analyzing trace with hash -41137780, now seen corresponding path program 1 times [2020-07-17 13:30:03,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:03,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350305021] [2020-07-17 13:30:03,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:03,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:03,486 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:03,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350305021] [2020-07-17 13:30:03,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:03,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-17 13:30:03,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375588948] [2020-07-17 13:30:03,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-17 13:30:03,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:03,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-17 13:30:03,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-07-17 13:30:03,488 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand 14 states. [2020-07-17 13:30:04,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:04,209 INFO L93 Difference]: Finished difference Result 154 states and 160 transitions. [2020-07-17 13:30:04,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-17 13:30:04,211 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2020-07-17 13:30:04,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:04,212 INFO L225 Difference]: With dead ends: 154 [2020-07-17 13:30:04,213 INFO L226 Difference]: Without dead ends: 152 [2020-07-17 13:30:04,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2020-07-17 13:30:04,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-07-17 13:30:04,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 127. [2020-07-17 13:30:04,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-07-17 13:30:04,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 132 transitions. [2020-07-17 13:30:04,233 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 132 transitions. Word has length 44 [2020-07-17 13:30:04,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:04,233 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 132 transitions. [2020-07-17 13:30:04,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-17 13:30:04,234 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 132 transitions. [2020-07-17 13:30:04,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-17 13:30:04,235 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:04,235 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] [2020-07-17 13:30:04,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 13:30:04,235 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]=== [2020-07-17 13:30:04,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:04,236 INFO L82 PathProgramCache]: Analyzing trace with hash 784866741, now seen corresponding path program 1 times [2020-07-17 13:30:04,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:04,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811459277] [2020-07-17 13:30:04,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:04,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:04,348 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:04,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811459277] [2020-07-17 13:30:04,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:04,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-17 13:30:04,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342959589] [2020-07-17 13:30:04,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 13:30:04,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:04,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 13:30:04,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-17 13:30:04,350 INFO L87 Difference]: Start difference. First operand 127 states and 132 transitions. Second operand 7 states. [2020-07-17 13:30:04,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:04,719 INFO L93 Difference]: Finished difference Result 159 states and 165 transitions. [2020-07-17 13:30:04,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-17 13:30:04,720 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-07-17 13:30:04,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:04,721 INFO L225 Difference]: With dead ends: 159 [2020-07-17 13:30:04,721 INFO L226 Difference]: Without dead ends: 120 [2020-07-17 13:30:04,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-07-17 13:30:04,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-07-17 13:30:04,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-07-17 13:30:04,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-07-17 13:30:04,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 124 transitions. [2020-07-17 13:30:04,741 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 124 transitions. Word has length 45 [2020-07-17 13:30:04,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:04,742 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 124 transitions. [2020-07-17 13:30:04,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 13:30:04,742 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 124 transitions. [2020-07-17 13:30:04,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-17 13:30:04,744 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:04,744 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] [2020-07-17 13:30:04,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 13:30:04,744 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]=== [2020-07-17 13:30:04,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:04,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1051665877, now seen corresponding path program 1 times [2020-07-17 13:30:04,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:04,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076818825] [2020-07-17 13:30:04,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:05,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:05,136 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:05,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076818825] [2020-07-17 13:30:05,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:05,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-07-17 13:30:05,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186666561] [2020-07-17 13:30:05,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-17 13:30:05,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:05,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-17 13:30:05,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2020-07-17 13:30:05,139 INFO L87 Difference]: Start difference. First operand 120 states and 124 transitions. Second operand 19 states. [2020-07-17 13:30:06,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:06,348 INFO L93 Difference]: Finished difference Result 187 states and 195 transitions. [2020-07-17 13:30:06,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-17 13:30:06,349 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 54 [2020-07-17 13:30:06,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:06,350 INFO L225 Difference]: With dead ends: 187 [2020-07-17 13:30:06,350 INFO L226 Difference]: Without dead ends: 185 [2020-07-17 13:30:06,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=294, Invalid=1112, Unknown=0, NotChecked=0, Total=1406 [2020-07-17 13:30:06,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-07-17 13:30:06,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 167. [2020-07-17 13:30:06,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-07-17 13:30:06,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 174 transitions. [2020-07-17 13:30:06,379 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 174 transitions. Word has length 54 [2020-07-17 13:30:06,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:06,381 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 174 transitions. [2020-07-17 13:30:06,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-17 13:30:06,381 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 174 transitions. [2020-07-17 13:30:06,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-17 13:30:06,382 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:06,382 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] [2020-07-17 13:30:06,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 13:30:06,383 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]=== [2020-07-17 13:30:06,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:06,383 INFO L82 PathProgramCache]: Analyzing trace with hash 999535374, now seen corresponding path program 1 times [2020-07-17 13:30:06,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:06,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368580972] [2020-07-17 13:30:06,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:07,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:07,034 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:07,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368580972] [2020-07-17 13:30:07,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:07,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-07-17 13:30:07,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526797452] [2020-07-17 13:30:07,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-17 13:30:07,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:07,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-17 13:30:07,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-07-17 13:30:07,037 INFO L87 Difference]: Start difference. First operand 167 states and 174 transitions. Second operand 17 states. [2020-07-17 13:30:08,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:08,103 INFO L93 Difference]: Finished difference Result 224 states and 233 transitions. [2020-07-17 13:30:08,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-17 13:30:08,104 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 55 [2020-07-17 13:30:08,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:08,105 INFO L225 Difference]: With dead ends: 224 [2020-07-17 13:30:08,105 INFO L226 Difference]: Without dead ends: 221 [2020-07-17 13:30:08,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=252, Invalid=740, Unknown=0, NotChecked=0, Total=992 [2020-07-17 13:30:08,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-07-17 13:30:08,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 177. [2020-07-17 13:30:08,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-07-17 13:30:08,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 185 transitions. [2020-07-17 13:30:08,135 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 185 transitions. Word has length 55 [2020-07-17 13:30:08,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:08,135 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 185 transitions. [2020-07-17 13:30:08,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-17 13:30:08,136 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 185 transitions. [2020-07-17 13:30:08,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-17 13:30:08,136 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:08,137 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] [2020-07-17 13:30:08,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-17 13:30:08,137 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]=== [2020-07-17 13:30:08,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:08,137 INFO L82 PathProgramCache]: Analyzing trace with hash 754417445, now seen corresponding path program 1 times [2020-07-17 13:30:08,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:08,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63240917] [2020-07-17 13:30:08,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:09,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:09,186 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:09,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63240917] [2020-07-17 13:30:09,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:09,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-07-17 13:30:09,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914654838] [2020-07-17 13:30:09,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-17 13:30:09,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:09,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-17 13:30:09,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2020-07-17 13:30:09,189 INFO L87 Difference]: Start difference. First operand 177 states and 185 transitions. Second operand 23 states. [2020-07-17 13:30:10,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:10,761 INFO L93 Difference]: Finished difference Result 254 states and 264 transitions. [2020-07-17 13:30:10,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-17 13:30:10,762 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 65 [2020-07-17 13:30:10,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:10,764 INFO L225 Difference]: With dead ends: 254 [2020-07-17 13:30:10,764 INFO L226 Difference]: Without dead ends: 251 [2020-07-17 13:30:10,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=436, Invalid=1544, Unknown=0, NotChecked=0, Total=1980 [2020-07-17 13:30:10,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-07-17 13:30:10,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 201. [2020-07-17 13:30:10,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-07-17 13:30:10,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 210 transitions. [2020-07-17 13:30:10,797 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 210 transitions. Word has length 65 [2020-07-17 13:30:10,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:10,797 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 210 transitions. [2020-07-17 13:30:10,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-17 13:30:10,797 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 210 transitions. [2020-07-17 13:30:10,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-07-17 13:30:10,798 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:10,798 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] [2020-07-17 13:30:10,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-17 13:30:10,799 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]=== [2020-07-17 13:30:10,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:10,799 INFO L82 PathProgramCache]: Analyzing trace with hash -736103817, now seen corresponding path program 1 times [2020-07-17 13:30:10,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:10,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526313270] [2020-07-17 13:30:10,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:10,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:11,000 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:11,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526313270] [2020-07-17 13:30:11,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:11,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-17 13:30:11,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954008277] [2020-07-17 13:30:11,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-17 13:30:11,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:11,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-17 13:30:11,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-07-17 13:30:11,002 INFO L87 Difference]: Start difference. First operand 201 states and 210 transitions. Second operand 10 states. [2020-07-17 13:30:11,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:11,492 INFO L93 Difference]: Finished difference Result 227 states and 237 transitions. [2020-07-17 13:30:11,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-17 13:30:11,492 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-07-17 13:30:11,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:11,494 INFO L225 Difference]: With dead ends: 227 [2020-07-17 13:30:11,495 INFO L226 Difference]: Without dead ends: 225 [2020-07-17 13:30:11,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2020-07-17 13:30:11,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-07-17 13:30:11,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 201. [2020-07-17 13:30:11,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-07-17 13:30:11,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 209 transitions. [2020-07-17 13:30:11,525 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 209 transitions. Word has length 70 [2020-07-17 13:30:11,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:11,525 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 209 transitions. [2020-07-17 13:30:11,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-17 13:30:11,525 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 209 transitions. [2020-07-17 13:30:11,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-07-17 13:30:11,526 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:11,526 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] [2020-07-17 13:30:11,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-17 13:30:11,527 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]=== [2020-07-17 13:30:11,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:11,527 INFO L82 PathProgramCache]: Analyzing trace with hash 715756074, now seen corresponding path program 1 times [2020-07-17 13:30:11,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:11,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579059123] [2020-07-17 13:30:11,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:11,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-17 13:30:11,540 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:458) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:290) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:191) 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) [2020-07-17 13:30:11,546 INFO L168 Benchmark]: Toolchain (without parser) took 12818.21 ms. Allocated memory was 137.9 MB in the beginning and 382.2 MB in the end (delta: 244.3 MB). Free memory was 102.1 MB in the beginning and 299.1 MB in the end (delta: -197.0 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:11,547 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 137.9 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-17 13:30:11,547 INFO L168 Benchmark]: CACSL2BoogieTranslator took 603.69 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 101.7 MB in the beginning and 170.5 MB in the end (delta: -68.8 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:11,548 INFO L168 Benchmark]: Boogie Preprocessor took 76.08 ms. Allocated memory is still 202.9 MB. Free memory was 170.5 MB in the beginning and 167.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:11,549 INFO L168 Benchmark]: RCFGBuilder took 746.11 ms. Allocated memory is still 202.9 MB. Free memory was 167.4 MB in the beginning and 110.2 MB in the end (delta: 57.2 MB). Peak memory consumption was 57.2 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:11,550 INFO L168 Benchmark]: TraceAbstraction took 11383.78 ms. Allocated memory was 202.9 MB in the beginning and 382.2 MB in the end (delta: 179.3 MB). Free memory was 110.2 MB in the beginning and 299.1 MB in the end (delta: -188.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 13:30:11,553 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 137.9 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 603.69 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 101.7 MB in the beginning and 170.5 MB in the end (delta: -68.8 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 76.08 ms. Allocated memory is still 202.9 MB. Free memory was 170.5 MB in the beginning and 167.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 746.11 ms. Allocated memory is still 202.9 MB. Free memory was 167.4 MB in the beginning and 110.2 MB in the end (delta: 57.2 MB). Peak memory consumption was 57.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11383.78 ms. Allocated memory was 202.9 MB in the beginning and 382.2 MB in the end (delta: 179.3 MB). Free memory was 110.2 MB in the beginning and 299.1 MB in the end (delta: -188.8 MB). There was no memory consumed. 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:458) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...