/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 13:30:03,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 13:30:03,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 13:30:03,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 13:30:03,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 13:30:03,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 13:30:03,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 13:30:03,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 13:30:03,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 13:30:03,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 13:30:03,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 13:30:03,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 13:30:03,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 13:30:03,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 13:30:03,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 13:30:03,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 13:30:03,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 13:30:03,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 13:30:03,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 13:30:03,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 13:30:03,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 13:30:03,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 13:30:03,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 13:30:03,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 13:30:03,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 13:30:03,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 13:30:03,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 13:30:03,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 13:30:03,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 13:30:03,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 13:30:03,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 13:30:03,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 13:30:03,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 13:30:03,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 13:30:03,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 13:30:03,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 13:30:03,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 13:30:03,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 13:30:03,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 13:30:03,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 13:30:03,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 13:30:03,217 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 13:30:03,233 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 13:30:03,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 13:30:03,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 13:30:03,236 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 13:30:03,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 13:30:03,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 13:30:03,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 13:30:03,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 13:30:03,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 13:30:03,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 13:30:03,239 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 13:30:03,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 13:30:03,239 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 13:30:03,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 13:30:03,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 13:30:03,240 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 13:30:03,240 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 13:30:03,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 13:30:03,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:30:03,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 13:30:03,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 13:30:03,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 13:30:03,242 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 13:30:03,527 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 13:30:03,541 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 13:30:03,545 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 13:30:03,546 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 13:30:03,547 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 13:30:03,547 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-07-17 13:30:03,627 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39f874362/b151f01101914111a880bec169996270/FLAG6654ca91c [2020-07-17 13:30:04,199 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 13:30:04,200 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-07-17 13:30:04,215 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39f874362/b151f01101914111a880bec169996270/FLAG6654ca91c [2020-07-17 13:30:04,449 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39f874362/b151f01101914111a880bec169996270 [2020-07-17 13:30:04,462 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 13:30:04,465 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 13:30:04,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 13:30:04,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 13:30:04,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 13:30:04,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:30:04" (1/1) ... [2020-07-17 13:30:04,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d6113eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:04, skipping insertion in model container [2020-07-17 13:30:04,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:30:04" (1/1) ... [2020-07-17 13:30:04,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 13:30:04,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 13:30:05,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:30:05,125 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 13:30:05,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:30:05,257 INFO L208 MainTranslator]: Completed translation [2020-07-17 13:30:05,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:05 WrapperNode [2020-07-17 13:30:05,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 13:30:05,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 13:30:05,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 13:30:05,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 13:30:05,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:05" (1/1) ... [2020-07-17 13:30:05,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:05" (1/1) ... [2020-07-17 13:30:05,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:05" (1/1) ... [2020-07-17 13:30:05,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:05" (1/1) ... [2020-07-17 13:30:05,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:05" (1/1) ... [2020-07-17 13:30:05,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:05" (1/1) ... [2020-07-17 13:30:05,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:05" (1/1) ... [2020-07-17 13:30:05,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 13:30:05,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 13:30:05,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 13:30:05,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 13:30:05,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:05" (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 13:30:05,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 13:30:05,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 13:30:05,386 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 13:30:05,386 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-17 13:30:05,387 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-17 13:30:05,387 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-17 13:30:05,387 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-17 13:30:05,387 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-17 13:30:05,387 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-17 13:30:05,387 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-17 13:30:05,387 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-17 13:30:05,387 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-17 13:30:05,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-17 13:30:05,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-17 13:30:05,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-17 13:30:05,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-17 13:30:05,388 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-17 13:30:05,388 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-17 13:30:05,389 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-17 13:30:05,389 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-17 13:30:05,389 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-17 13:30:05,389 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-17 13:30:05,389 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-17 13:30:05,389 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-17 13:30:05,390 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-17 13:30:05,390 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-17 13:30:05,390 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-17 13:30:05,390 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-17 13:30:05,390 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-17 13:30:05,390 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-17 13:30:05,391 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-17 13:30:05,391 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-17 13:30:05,391 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-17 13:30:05,391 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-17 13:30:05,391 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-17 13:30:05,391 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-17 13:30:05,392 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-17 13:30:05,392 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-17 13:30:05,392 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-17 13:30:05,392 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-17 13:30:05,392 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-17 13:30:05,392 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-17 13:30:05,393 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-17 13:30:05,393 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-17 13:30:05,393 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-17 13:30:05,393 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-17 13:30:05,393 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-17 13:30:05,393 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-17 13:30:05,393 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-17 13:30:05,394 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-17 13:30:05,394 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-17 13:30:05,394 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-17 13:30:05,394 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-17 13:30:05,394 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 13:30:05,394 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-17 13:30:05,394 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-17 13:30:05,395 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-17 13:30:05,395 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-17 13:30:05,395 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-17 13:30:05,395 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-17 13:30:05,395 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-17 13:30:05,395 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-17 13:30:05,395 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 13:30:05,396 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-17 13:30:05,396 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-17 13:30:05,396 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-17 13:30:05,396 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-17 13:30:05,396 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-17 13:30:05,396 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-17 13:30:05,396 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-17 13:30:05,397 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-17 13:30:05,397 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-17 13:30:05,397 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-17 13:30:05,397 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-17 13:30:05,397 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-17 13:30:05,397 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-17 13:30:05,398 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-17 13:30:05,398 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-17 13:30:05,398 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-17 13:30:05,398 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-17 13:30:05,398 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-17 13:30:05,398 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-17 13:30:05,399 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-17 13:30:05,399 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-17 13:30:05,399 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-17 13:30:05,399 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-17 13:30:05,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-17 13:30:05,399 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-17 13:30:05,399 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-17 13:30:05,400 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-17 13:30:05,400 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-17 13:30:05,400 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-17 13:30:05,400 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-17 13:30:05,400 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-17 13:30:05,400 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-17 13:30:05,401 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-17 13:30:05,401 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-17 13:30:05,401 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-17 13:30:05,401 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-17 13:30:05,401 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-17 13:30:05,401 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-17 13:30:05,401 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-17 13:30:05,402 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-17 13:30:05,402 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-17 13:30:05,402 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-17 13:30:05,402 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-17 13:30:05,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 13:30:05,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 13:30:05,402 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 13:30:05,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 13:30:05,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 13:30:05,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-17 13:30:05,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-17 13:30:05,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 13:30:05,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 13:30:05,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 13:30:05,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 13:30:06,057 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 13:30:06,058 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-07-17 13:30:06,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:30:06 BoogieIcfgContainer [2020-07-17 13:30:06,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 13:30:06,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 13:30:06,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 13:30:06,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 13:30:06,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 01:30:04" (1/3) ... [2020-07-17 13:30:06,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47fa6ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:30:06, skipping insertion in model container [2020-07-17 13:30:06,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:05" (2/3) ... [2020-07-17 13:30:06,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47fa6ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:30:06, skipping insertion in model container [2020-07-17 13:30:06,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:30:06" (3/3) ... [2020-07-17 13:30:06,085 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2020-07-17 13:30:06,098 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 13:30:06,107 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-07-17 13:30:06,124 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-07-17 13:30:06,149 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 13:30:06,149 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 13:30:06,150 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 13:30:06,150 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 13:30:06,150 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 13:30:06,150 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 13:30:06,151 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 13:30:06,151 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 13:30:06,180 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-07-17 13:30:06,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-17 13:30:06,195 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:06,196 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] [2020-07-17 13:30:06,198 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:06,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:06,209 INFO L82 PathProgramCache]: Analyzing trace with hash -159181327, now seen corresponding path program 1 times [2020-07-17 13:30:06,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:06,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449228525] [2020-07-17 13:30:06,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:06,473 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 13:30:06,476 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:06,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449228525] [2020-07-17 13:30:06,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:06,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:30:06,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401379805] [2020-07-17 13:30:06,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:30:06,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:06,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:30:06,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:30:06,506 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 3 states. [2020-07-17 13:30:06,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:06,764 INFO L93 Difference]: Finished difference Result 157 states and 194 transitions. [2020-07-17 13:30:06,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:30:06,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-17 13:30:06,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:06,777 INFO L225 Difference]: With dead ends: 157 [2020-07-17 13:30:06,778 INFO L226 Difference]: Without dead ends: 74 [2020-07-17 13:30:06,782 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 13:30:06,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-17 13:30:06,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-07-17 13:30:06,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-07-17 13:30:06,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2020-07-17 13:30:06,832 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 21 [2020-07-17 13:30:06,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:06,833 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2020-07-17 13:30:06,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:30:06,833 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-07-17 13:30:06,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-17 13:30:06,834 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:06,834 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 13:30:06,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 13:30:06,835 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:06,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:06,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1476818129, now seen corresponding path program 1 times [2020-07-17 13:30:06,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:06,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332768529] [2020-07-17 13:30:06,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:06,987 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 13:30:06,988 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:06,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332768529] [2020-07-17 13:30:06,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:06,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-17 13:30:06,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934293345] [2020-07-17 13:30:06,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 13:30:06,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:06,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 13:30:06,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-17 13:30:06,991 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 8 states. [2020-07-17 13:30:07,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:07,276 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2020-07-17 13:30:07,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-17 13:30:07,277 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-07-17 13:30:07,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:07,279 INFO L225 Difference]: With dead ends: 92 [2020-07-17 13:30:07,279 INFO L226 Difference]: Without dead ends: 90 [2020-07-17 13:30:07,281 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 13:30:07,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-07-17 13:30:07,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 72. [2020-07-17 13:30:07,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-07-17 13:30:07,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2020-07-17 13:30:07,298 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 23 [2020-07-17 13:30:07,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:07,298 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2020-07-17 13:30:07,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 13:30:07,299 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2020-07-17 13:30:07,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-17 13:30:07,300 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:07,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:07,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 13:30:07,300 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:07,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:07,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1518762392, now seen corresponding path program 1 times [2020-07-17 13:30:07,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:07,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915298352] [2020-07-17 13:30:07,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:07,508 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 13:30:07,509 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:07,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915298352] [2020-07-17 13:30:07,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:07,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-17 13:30:07,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966694184] [2020-07-17 13:30:07,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 13:30:07,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:07,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 13:30:07,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-17 13:30:07,511 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand 9 states. [2020-07-17 13:30:07,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:07,869 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2020-07-17 13:30:07,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-17 13:30:07,870 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-07-17 13:30:07,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:07,871 INFO L225 Difference]: With dead ends: 120 [2020-07-17 13:30:07,871 INFO L226 Difference]: Without dead ends: 117 [2020-07-17 13:30:07,872 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 13:30:07,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-07-17 13:30:07,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 81. [2020-07-17 13:30:07,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-17 13:30:07,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-07-17 13:30:07,892 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 27 [2020-07-17 13:30:07,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:07,892 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-07-17 13:30:07,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 13:30:07,893 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-07-17 13:30:07,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-17 13:30:07,894 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:07,894 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] [2020-07-17 13:30:07,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 13:30:07,895 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:07,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:07,895 INFO L82 PathProgramCache]: Analyzing trace with hash 2047332937, now seen corresponding path program 1 times [2020-07-17 13:30:07,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:07,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606272699] [2020-07-17 13:30:07,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:08,046 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 13:30:08,047 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:08,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606272699] [2020-07-17 13:30:08,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:08,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 13:30:08,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270015304] [2020-07-17 13:30:08,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 13:30:08,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:08,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 13:30:08,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 13:30:08,049 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 6 states. [2020-07-17 13:30:08,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:08,261 INFO L93 Difference]: Finished difference Result 114 states and 120 transitions. [2020-07-17 13:30:08,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-17 13:30:08,261 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-07-17 13:30:08,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:08,263 INFO L225 Difference]: With dead ends: 114 [2020-07-17 13:30:08,263 INFO L226 Difference]: Without dead ends: 92 [2020-07-17 13:30:08,264 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 13:30:08,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-07-17 13:30:08,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 84. [2020-07-17 13:30:08,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-07-17 13:30:08,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-07-17 13:30:08,281 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 36 [2020-07-17 13:30:08,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:08,281 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-07-17 13:30:08,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 13:30:08,281 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-07-17 13:30:08,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-17 13:30:08,282 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:08,283 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] [2020-07-17 13:30:08,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 13:30:08,283 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:08,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:08,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1237644091, now seen corresponding path program 1 times [2020-07-17 13:30:08,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:08,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350428698] [2020-07-17 13:30:08,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:08,792 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 13:30:08,793 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:08,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350428698] [2020-07-17 13:30:08,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:08,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-07-17 13:30:08,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352417677] [2020-07-17 13:30:08,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-17 13:30:08,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:08,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-17 13:30:08,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-07-17 13:30:08,795 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 16 states. [2020-07-17 13:30:09,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:09,671 INFO L93 Difference]: Finished difference Result 155 states and 162 transitions. [2020-07-17 13:30:09,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-17 13:30:09,672 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 40 [2020-07-17 13:30:09,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:09,673 INFO L225 Difference]: With dead ends: 155 [2020-07-17 13:30:09,675 INFO L226 Difference]: Without dead ends: 152 [2020-07-17 13:30:09,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2020-07-17 13:30:09,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-07-17 13:30:09,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 97. [2020-07-17 13:30:09,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-07-17 13:30:09,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 103 transitions. [2020-07-17 13:30:09,699 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 103 transitions. Word has length 40 [2020-07-17 13:30:09,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:09,700 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 103 transitions. [2020-07-17 13:30:09,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-17 13:30:09,700 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 103 transitions. [2020-07-17 13:30:09,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-17 13:30:09,701 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:09,702 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] [2020-07-17 13:30:09,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 13:30:09,702 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:09,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:09,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1411163060, now seen corresponding path program 1 times [2020-07-17 13:30:09,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:09,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759619301] [2020-07-17 13:30:09,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:09,816 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 13:30:09,822 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:09,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759619301] [2020-07-17 13:30:09,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:09,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-17 13:30:09,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425714408] [2020-07-17 13:30:09,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 13:30:09,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:09,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 13:30:09,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-17 13:30:09,826 INFO L87 Difference]: Start difference. First operand 97 states and 103 transitions. Second operand 7 states. [2020-07-17 13:30:10,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:10,109 INFO L93 Difference]: Finished difference Result 136 states and 143 transitions. [2020-07-17 13:30:10,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 13:30:10,110 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-07-17 13:30:10,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:10,111 INFO L225 Difference]: With dead ends: 136 [2020-07-17 13:30:10,111 INFO L226 Difference]: Without dead ends: 97 [2020-07-17 13:30:10,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-07-17 13:30:10,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-07-17 13:30:10,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-07-17 13:30:10,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-07-17 13:30:10,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 102 transitions. [2020-07-17 13:30:10,131 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 102 transitions. Word has length 43 [2020-07-17 13:30:10,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:10,131 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 102 transitions. [2020-07-17 13:30:10,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 13:30:10,131 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 102 transitions. [2020-07-17 13:30:10,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-17 13:30:10,133 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:10,133 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] [2020-07-17 13:30:10,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 13:30:10,134 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:10,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:10,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1215747511, now seen corresponding path program 1 times [2020-07-17 13:30:10,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:10,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301051594] [2020-07-17 13:30:10,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:10,742 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 13:30:10,743 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:10,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301051594] [2020-07-17 13:30:10,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:10,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-07-17 13:30:10,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572316722] [2020-07-17 13:30:10,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-17 13:30:10,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:10,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-17 13:30:10,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-07-17 13:30:10,746 INFO L87 Difference]: Start difference. First operand 97 states and 102 transitions. Second operand 20 states. [2020-07-17 13:30:11,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:11,857 INFO L93 Difference]: Finished difference Result 163 states and 170 transitions. [2020-07-17 13:30:11,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-17 13:30:11,858 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 47 [2020-07-17 13:30:11,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:11,859 INFO L225 Difference]: With dead ends: 163 [2020-07-17 13:30:11,859 INFO L226 Difference]: Without dead ends: 160 [2020-07-17 13:30:11,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=353, Invalid=1129, Unknown=0, NotChecked=0, Total=1482 [2020-07-17 13:30:11,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-07-17 13:30:11,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 106. [2020-07-17 13:30:11,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-07-17 13:30:11,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 111 transitions. [2020-07-17 13:30:11,895 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 111 transitions. Word has length 47 [2020-07-17 13:30:11,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:11,896 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 111 transitions. [2020-07-17 13:30:11,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-17 13:30:11,896 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 111 transitions. [2020-07-17 13:30:11,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-17 13:30:11,897 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:11,898 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1] [2020-07-17 13:30:11,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 13:30:11,898 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:11,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:11,898 INFO L82 PathProgramCache]: Analyzing trace with hash 231328440, now seen corresponding path program 2 times [2020-07-17 13:30:11,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:11,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1632108406] [2020-07-17 13:30:11,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:12,493 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 13:30:12,494 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:12,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1632108406] [2020-07-17 13:30:12,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:12,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-07-17 13:30:12,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734210573] [2020-07-17 13:30:12,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-17 13:30:12,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:12,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-17 13:30:12,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2020-07-17 13:30:12,496 INFO L87 Difference]: Start difference. First operand 106 states and 111 transitions. Second operand 20 states. [2020-07-17 13:30:13,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:13,616 INFO L93 Difference]: Finished difference Result 179 states and 188 transitions. [2020-07-17 13:30:13,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-17 13:30:13,617 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 53 [2020-07-17 13:30:13,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:13,619 INFO L225 Difference]: With dead ends: 179 [2020-07-17 13:30:13,620 INFO L226 Difference]: Without dead ends: 176 [2020-07-17 13:30:13,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=310, Invalid=950, Unknown=0, NotChecked=0, Total=1260 [2020-07-17 13:30:13,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-07-17 13:30:13,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 117. [2020-07-17 13:30:13,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-07-17 13:30:13,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 124 transitions. [2020-07-17 13:30:13,655 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 124 transitions. Word has length 53 [2020-07-17 13:30:13,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:13,656 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 124 transitions. [2020-07-17 13:30:13,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-17 13:30:13,656 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 124 transitions. [2020-07-17 13:30:13,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-17 13:30:13,657 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:13,658 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] [2020-07-17 13:30:13,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 13:30:13,658 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:13,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:13,659 INFO L82 PathProgramCache]: Analyzing trace with hash -2144912159, now seen corresponding path program 1 times [2020-07-17 13:30:13,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:13,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726308242] [2020-07-17 13:30:13,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:13,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 13:30:13,674 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 13:30:13,680 INFO L168 Benchmark]: Toolchain (without parser) took 9215.42 ms. Allocated memory was 145.2 MB in the beginning and 319.3 MB in the end (delta: 174.1 MB). Free memory was 101.3 MB in the beginning and 215.9 MB in the end (delta: -114.6 MB). Peak memory consumption was 59.5 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:13,681 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 145.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-17 13:30:13,682 INFO L168 Benchmark]: CACSL2BoogieTranslator took 790.76 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 100.8 MB in the beginning and 170.7 MB in the end (delta: -69.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:13,683 INFO L168 Benchmark]: Boogie Preprocessor took 62.57 ms. Allocated memory is still 202.9 MB. Free memory was 170.7 MB in the beginning and 167.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:13,684 INFO L168 Benchmark]: RCFGBuilder took 752.80 ms. Allocated memory is still 202.9 MB. Free memory was 167.3 MB in the beginning and 115.2 MB in the end (delta: 52.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:13,685 INFO L168 Benchmark]: TraceAbstraction took 7602.00 ms. Allocated memory was 202.9 MB in the beginning and 319.3 MB in the end (delta: 116.4 MB). Free memory was 115.2 MB in the beginning and 215.9 MB in the end (delta: -100.6 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:13,689 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 145.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 790.76 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 100.8 MB in the beginning and 170.7 MB in the end (delta: -69.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.57 ms. Allocated memory is still 202.9 MB. Free memory was 170.7 MB in the beginning and 167.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 752.80 ms. Allocated memory is still 202.9 MB. Free memory was 167.3 MB in the beginning and 115.2 MB in the end (delta: 52.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7602.00 ms. Allocated memory was 202.9 MB in the beginning and 319.3 MB in the end (delta: 116.4 MB). Free memory was 115.2 MB in the beginning and 215.9 MB in the end (delta: -100.6 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:458) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...