/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-01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:41:29,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:41:29,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:41:29,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:41:29,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:41:29,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:41:29,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:41:29,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:41:29,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:41:29,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:41:29,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:41:29,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:41:29,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:41:29,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:41:29,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:41:29,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:41:29,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:41:29,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:41:29,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:41:29,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:41:29,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:41:29,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:41:29,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:41:29,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:41:29,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 16:41:29,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 16:41:29,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 16:41:29,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 16:41:29,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 16:41:29,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 16:41:29,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 16:41:29,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 16:41:29,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 16:41:29,777 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 16:41:29,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 16:41:29,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 16:41:29,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 16:41:29,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 16:41:29,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:41:29,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:41:29,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:41:29,784 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:41:29,799 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:41:29,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:41:29,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:41:29,802 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:41:29,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:41:29,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:41:29,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:41:29,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:41:29,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:41:29,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:41:29,804 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:41:29,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:41:29,804 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:41:29,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:41:29,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:41:29,805 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:41:29,805 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:41:29,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:41:29,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:41:29,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:41:29,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:41:29,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:41:29,807 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:41:30,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:41:30,327 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:41:30,333 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:41:30,335 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:41:30,336 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:41:30,337 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-09-04 16:41:30,454 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54dd8d4b7/254b00a029cc460a8547afa97b6566a0/FLAG72581ab54 [2020-09-04 16:41:31,209 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:41:31,210 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-09-04 16:41:31,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54dd8d4b7/254b00a029cc460a8547afa97b6566a0/FLAG72581ab54 [2020-09-04 16:41:31,454 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54dd8d4b7/254b00a029cc460a8547afa97b6566a0 [2020-09-04 16:41:31,470 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:41:31,473 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:41:31,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:41:31,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:41:31,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:41:31,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:41:31" (1/1) ... [2020-09-04 16:41:31,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff6f344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:31, skipping insertion in model container [2020-09-04 16:41:31,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:41:31" (1/1) ... [2020-09-04 16:41:31,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:41:31,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:41:32,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:41:32,169 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:41:32,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:41:32,290 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:41:32,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:32 WrapperNode [2020-09-04 16:41:32,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:41:32,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:41:32,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:41:32,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:41:32,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:32" (1/1) ... [2020-09-04 16:41:32,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:32" (1/1) ... [2020-09-04 16:41:32,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:32" (1/1) ... [2020-09-04 16:41:32,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:32" (1/1) ... [2020-09-04 16:41:32,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:32" (1/1) ... [2020-09-04 16:41:32,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:32" (1/1) ... [2020-09-04 16:41:32,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:32" (1/1) ... [2020-09-04 16:41:32,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:41:32,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:41:32,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:41:32,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:41:32,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:41:32,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:41:32,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:41:32,484 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:41:32,485 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-04 16:41:32,485 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-04 16:41:32,485 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-04 16:41:32,485 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-04 16:41:32,485 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-04 16:41:32,486 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-04 16:41:32,486 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-04 16:41:32,486 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-04 16:41:32,486 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-04 16:41:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-04 16:41:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-04 16:41:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-04 16:41:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-04 16:41:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-04 16:41:32,488 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-04 16:41:32,488 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-04 16:41:32,488 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-04 16:41:32,488 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-04 16:41:32,488 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-04 16:41:32,489 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-04 16:41:32,489 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-04 16:41:32,489 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-04 16:41:32,489 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-04 16:41:32,489 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-04 16:41:32,490 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-04 16:41:32,490 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-04 16:41:32,490 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-04 16:41:32,490 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-04 16:41:32,490 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-04 16:41:32,491 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-04 16:41:32,491 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-04 16:41:32,491 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-04 16:41:32,491 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-04 16:41:32,491 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-04 16:41:32,491 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-04 16:41:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-04 16:41:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-04 16:41:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-04 16:41:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-04 16:41:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-04 16:41:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-04 16:41:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-04 16:41:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-04 16:41:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-04 16:41:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-04 16:41:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-04 16:41:32,494 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-04 16:41:32,494 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-04 16:41:32,494 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-04 16:41:32,494 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-04 16:41:32,494 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 16:41:32,495 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-04 16:41:32,495 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-04 16:41:32,495 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 16:41:32,495 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-04 16:41:32,495 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-04 16:41:32,495 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-04 16:41:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-04 16:41:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-04 16:41:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 16:41:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-04 16:41:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-04 16:41:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-04 16:41:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-04 16:41:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-04 16:41:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-04 16:41:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-04 16:41:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-04 16:41:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-04 16:41:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-04 16:41:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-04 16:41:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-04 16:41:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-04 16:41:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-04 16:41:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-04 16:41:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-04 16:41:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-04 16:41:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-04 16:41:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-04 16:41:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-04 16:41:32,500 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-04 16:41:32,500 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-04 16:41:32,500 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-04 16:41:32,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-04 16:41:32,500 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-04 16:41:32,500 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-04 16:41:32,501 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-04 16:41:32,501 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-04 16:41:32,501 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-04 16:41:32,501 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-04 16:41:32,501 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-04 16:41:32,501 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-04 16:41:32,502 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-04 16:41:32,502 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-04 16:41:32,502 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-04 16:41:32,502 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-04 16:41:32,502 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-04 16:41:32,503 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-04 16:41:32,503 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-04 16:41:32,503 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-04 16:41:32,503 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-04 16:41:32,503 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-04 16:41:32,503 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-04 16:41:32,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 16:41:32,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:41:32,504 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:41:32,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 16:41:32,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 16:41:32,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 16:41:32,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:41:32,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:41:32,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:41:33,334 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:41:33,335 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-09-04 16:41:33,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:41:33 BoogieIcfgContainer [2020-09-04 16:41:33,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:41:33,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:41:33,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:41:33,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:41:33,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:41:31" (1/3) ... [2020-09-04 16:41:33,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e3830d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:41:33, skipping insertion in model container [2020-09-04 16:41:33,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:41:32" (2/3) ... [2020-09-04 16:41:33,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e3830d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:41:33, skipping insertion in model container [2020-09-04 16:41:33,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:41:33" (3/3) ... [2020-09-04 16:41:33,353 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2020-09-04 16:41:33,367 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:41:33,379 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-09-04 16:41:33,404 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-09-04 16:41:33,440 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:41:33,440 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:41:33,441 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:41:33,441 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:41:33,441 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:41:33,441 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:41:33,442 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:41:33,442 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:41:33,483 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-09-04 16:41:33,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-04 16:41:33,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:41:33,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:41:33,504 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:41:33,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:41:33,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1409190174, now seen corresponding path program 1 times [2020-09-04 16:41:33,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:41:33,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253778223] [2020-09-04 16:41:33,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:41:33,615 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:41:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:33,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:41:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:33,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:41:33,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253778223] [2020-09-04 16:41:33,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:41:33,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 16:41:33,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121785747] [2020-09-04 16:41:33,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 16:41:33,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:41:33,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 16:41:33,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:41:33,904 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 5 states. [2020-09-04 16:41:34,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:41:34,606 INFO L93 Difference]: Finished difference Result 359 states and 475 transitions. [2020-09-04 16:41:34,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 16:41:34,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-04 16:41:34,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:41:34,641 INFO L225 Difference]: With dead ends: 359 [2020-09-04 16:41:34,642 INFO L226 Difference]: Without dead ends: 194 [2020-09-04 16:41:34,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:41:34,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-04 16:41:34,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2020-09-04 16:41:34,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-04 16:41:34,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 173 transitions. [2020-09-04 16:41:34,803 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 173 transitions. Word has length 13 [2020-09-04 16:41:34,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:41:34,804 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 173 transitions. [2020-09-04 16:41:34,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 16:41:34,804 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 173 transitions. [2020-09-04 16:41:34,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-04 16:41:34,806 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:41:34,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:41:34,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:41:34,807 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:41:34,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:41:34,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1469410252, now seen corresponding path program 1 times [2020-09-04 16:41:34,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:41:34,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887610984] [2020-09-04 16:41:34,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:41:34,822 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:41:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:34,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:41:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:34,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:41:34,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887610984] [2020-09-04 16:41:34,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:41:34,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:41:34,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120489666] [2020-09-04 16:41:34,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:41:34,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:41:34,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:41:34,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:41:34,922 INFO L87 Difference]: Start difference. First operand 164 states and 173 transitions. Second operand 4 states. [2020-09-04 16:41:35,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:41:35,281 INFO L93 Difference]: Finished difference Result 170 states and 179 transitions. [2020-09-04 16:41:35,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 16:41:35,282 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-04 16:41:35,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:41:35,285 INFO L225 Difference]: With dead ends: 170 [2020-09-04 16:41:35,286 INFO L226 Difference]: Without dead ends: 165 [2020-09-04 16:41:35,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:41:35,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-09-04 16:41:35,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-09-04 16:41:35,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-09-04 16:41:35,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 174 transitions. [2020-09-04 16:41:35,328 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 174 transitions. Word has length 25 [2020-09-04 16:41:35,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:41:35,328 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 174 transitions. [2020-09-04 16:41:35,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:41:35,328 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 174 transitions. [2020-09-04 16:41:35,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-04 16:41:35,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:41:35,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:41:35,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:41:35,330 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:41:35,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:41:35,331 INFO L82 PathProgramCache]: Analyzing trace with hash -155961871, now seen corresponding path program 1 times [2020-09-04 16:41:35,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:41:35,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734634404] [2020-09-04 16:41:35,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:41:35,336 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:41:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:35,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:41:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:35,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:41:35,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734634404] [2020-09-04 16:41:35,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:41:35,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 16:41:35,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47026532] [2020-09-04 16:41:35,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 16:41:35,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:41:35,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 16:41:35,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-04 16:41:35,472 INFO L87 Difference]: Start difference. First operand 165 states and 174 transitions. Second operand 8 states. [2020-09-04 16:41:36,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:41:36,175 INFO L93 Difference]: Finished difference Result 255 states and 270 transitions. [2020-09-04 16:41:36,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 16:41:36,176 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-09-04 16:41:36,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:41:36,179 INFO L225 Difference]: With dead ends: 255 [2020-09-04 16:41:36,179 INFO L226 Difference]: Without dead ends: 250 [2020-09-04 16:41:36,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-09-04 16:41:36,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-09-04 16:41:36,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 159. [2020-09-04 16:41:36,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-04 16:41:36,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 168 transitions. [2020-09-04 16:41:36,218 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 168 transitions. Word has length 27 [2020-09-04 16:41:36,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:41:36,219 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 168 transitions. [2020-09-04 16:41:36,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 16:41:36,220 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 168 transitions. [2020-09-04 16:41:36,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 16:41:36,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:41:36,222 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] [2020-09-04 16:41:36,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:41:36,222 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:41:36,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:41:36,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1500955686, now seen corresponding path program 1 times [2020-09-04 16:41:36,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:41:36,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399430699] [2020-09-04 16:41:36,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:41:36,229 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:41:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:36,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:41:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:36,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:41:36,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399430699] [2020-09-04 16:41:36,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:41:36,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 16:41:36,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236480193] [2020-09-04 16:41:36,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 16:41:36,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:41:36,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 16:41:36,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:41:36,357 INFO L87 Difference]: Start difference. First operand 159 states and 168 transitions. Second operand 6 states. [2020-09-04 16:41:36,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:41:36,829 INFO L93 Difference]: Finished difference Result 377 states and 399 transitions. [2020-09-04 16:41:36,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 16:41:36,829 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-04 16:41:36,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:41:36,832 INFO L225 Difference]: With dead ends: 377 [2020-09-04 16:41:36,832 INFO L226 Difference]: Without dead ends: 249 [2020-09-04 16:41:36,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-04 16:41:36,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-09-04 16:41:36,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 162. [2020-09-04 16:41:36,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-04 16:41:36,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 171 transitions. [2020-09-04 16:41:36,869 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 171 transitions. Word has length 33 [2020-09-04 16:41:36,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:41:36,869 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 171 transitions. [2020-09-04 16:41:36,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 16:41:36,870 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 171 transitions. [2020-09-04 16:41:36,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-04 16:41:36,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:41:36,871 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] [2020-09-04 16:41:36,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 16:41:36,871 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:41:36,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:41:36,872 INFO L82 PathProgramCache]: Analyzing trace with hash -820684573, now seen corresponding path program 1 times [2020-09-04 16:41:36,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:41:36,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900600702] [2020-09-04 16:41:36,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:41:36,877 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:41:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:37,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:41:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:37,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:41:37,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900600702] [2020-09-04 16:41:37,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:41:37,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 16:41:37,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110959002] [2020-09-04 16:41:37,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 16:41:37,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:41:37,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 16:41:37,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 16:41:37,036 INFO L87 Difference]: Start difference. First operand 162 states and 171 transitions. Second operand 7 states. [2020-09-04 16:41:37,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:41:37,471 INFO L93 Difference]: Finished difference Result 270 states and 285 transitions. [2020-09-04 16:41:37,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 16:41:37,472 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-04 16:41:37,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:41:37,474 INFO L225 Difference]: With dead ends: 270 [2020-09-04 16:41:37,474 INFO L226 Difference]: Without dead ends: 238 [2020-09-04 16:41:37,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-04 16:41:37,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-04 16:41:37,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 161. [2020-09-04 16:41:37,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-09-04 16:41:37,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 170 transitions. [2020-09-04 16:41:37,495 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 170 transitions. Word has length 35 [2020-09-04 16:41:37,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:41:37,495 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 170 transitions. [2020-09-04 16:41:37,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 16:41:37,495 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 170 transitions. [2020-09-04 16:41:37,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-04 16:41:37,497 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:41:37,497 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] [2020-09-04 16:41:37,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 16:41:37,498 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:41:37,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:41:37,498 INFO L82 PathProgramCache]: Analyzing trace with hash -2091807586, now seen corresponding path program 1 times [2020-09-04 16:41:37,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:41:37,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227445020] [2020-09-04 16:41:37,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:41:37,504 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:41:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:37,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:41:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:37,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:41:37,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227445020] [2020-09-04 16:41:37,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:41:37,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 16:41:37,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150826472] [2020-09-04 16:41:37,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 16:41:37,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:41:37,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 16:41:37,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-04 16:41:37,747 INFO L87 Difference]: Start difference. First operand 161 states and 170 transitions. Second operand 12 states. [2020-09-04 16:41:38,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:41:38,617 INFO L93 Difference]: Finished difference Result 286 states and 302 transitions. [2020-09-04 16:41:38,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 16:41:38,617 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-09-04 16:41:38,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:41:38,620 INFO L225 Difference]: With dead ends: 286 [2020-09-04 16:41:38,620 INFO L226 Difference]: Without dead ends: 282 [2020-09-04 16:41:38,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2020-09-04 16:41:38,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-09-04 16:41:38,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 176. [2020-09-04 16:41:38,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-04 16:41:38,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 186 transitions. [2020-09-04 16:41:38,653 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 186 transitions. Word has length 42 [2020-09-04 16:41:38,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:41:38,654 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 186 transitions. [2020-09-04 16:41:38,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 16:41:38,654 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 186 transitions. [2020-09-04 16:41:38,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-04 16:41:38,656 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:41:38,656 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] [2020-09-04 16:41:38,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 16:41:38,657 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:41:38,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:41:38,658 INFO L82 PathProgramCache]: Analyzing trace with hash 654436304, now seen corresponding path program 1 times [2020-09-04 16:41:38,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:41:38,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102130039] [2020-09-04 16:41:38,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:41:38,663 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:41:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:38,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:41:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:38,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:41:38,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102130039] [2020-09-04 16:41:38,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:41:38,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:41:38,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562209780] [2020-09-04 16:41:38,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:41:38,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:41:38,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:41:38,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:41:38,751 INFO L87 Difference]: Start difference. First operand 176 states and 186 transitions. Second operand 4 states. [2020-09-04 16:41:39,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:41:39,171 INFO L93 Difference]: Finished difference Result 282 states and 301 transitions. [2020-09-04 16:41:39,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 16:41:39,171 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-04 16:41:39,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:41:39,173 INFO L225 Difference]: With dead ends: 282 [2020-09-04 16:41:39,174 INFO L226 Difference]: Without dead ends: 215 [2020-09-04 16:41:39,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:41:39,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-09-04 16:41:39,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 179. [2020-09-04 16:41:39,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-09-04 16:41:39,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 190 transitions. [2020-09-04 16:41:39,200 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 190 transitions. Word has length 43 [2020-09-04 16:41:39,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:41:39,200 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 190 transitions. [2020-09-04 16:41:39,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:41:39,201 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 190 transitions. [2020-09-04 16:41:39,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-04 16:41:39,202 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:41:39,202 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] [2020-09-04 16:41:39,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 16:41:39,203 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:41:39,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:41:39,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1847672787, now seen corresponding path program 1 times [2020-09-04 16:41:39,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:41:39,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948007479] [2020-09-04 16:41:39,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:41:39,207 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:41:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:39,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:41:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:39,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:41:39,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948007479] [2020-09-04 16:41:39,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:41:39,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:41:39,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294769200] [2020-09-04 16:41:39,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:41:39,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:41:39,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:41:39,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:41:39,268 INFO L87 Difference]: Start difference. First operand 179 states and 190 transitions. Second operand 4 states. [2020-09-04 16:41:39,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:41:39,566 INFO L93 Difference]: Finished difference Result 179 states and 190 transitions. [2020-09-04 16:41:39,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 16:41:39,566 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-09-04 16:41:39,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:41:39,569 INFO L225 Difference]: With dead ends: 179 [2020-09-04 16:41:39,569 INFO L226 Difference]: Without dead ends: 177 [2020-09-04 16:41:39,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:41:39,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-09-04 16:41:39,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2020-09-04 16:41:39,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-09-04 16:41:39,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 188 transitions. [2020-09-04 16:41:39,594 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 188 transitions. Word has length 45 [2020-09-04 16:41:39,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:41:39,594 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 188 transitions. [2020-09-04 16:41:39,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:41:39,595 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 188 transitions. [2020-09-04 16:41:39,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-04 16:41:39,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:41:39,599 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] [2020-09-04 16:41:39,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 16:41:39,599 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:41:39,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:41:39,600 INFO L82 PathProgramCache]: Analyzing trace with hash 11890970, now seen corresponding path program 1 times [2020-09-04 16:41:39,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:41:39,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004508325] [2020-09-04 16:41:39,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:41:39,610 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:41:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:39,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:41:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:39,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:41:39,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004508325] [2020-09-04 16:41:39,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:41:39,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 16:41:39,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698543708] [2020-09-04 16:41:39,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 16:41:39,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:41:39,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 16:41:39,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 16:41:39,816 INFO L87 Difference]: Start difference. First operand 177 states and 188 transitions. Second operand 9 states. [2020-09-04 16:41:40,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:41:40,628 INFO L93 Difference]: Finished difference Result 368 states and 393 transitions. [2020-09-04 16:41:40,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 16:41:40,629 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-09-04 16:41:40,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:41:40,632 INFO L225 Difference]: With dead ends: 368 [2020-09-04 16:41:40,632 INFO L226 Difference]: Without dead ends: 300 [2020-09-04 16:41:40,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-09-04 16:41:40,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-09-04 16:41:40,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 196. [2020-09-04 16:41:40,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-04 16:41:40,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 208 transitions. [2020-09-04 16:41:40,662 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 208 transitions. Word has length 49 [2020-09-04 16:41:40,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:41:40,663 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 208 transitions. [2020-09-04 16:41:40,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 16:41:40,663 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 208 transitions. [2020-09-04 16:41:40,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-04 16:41:40,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:41:40,664 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] [2020-09-04 16:41:40,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 16:41:40,665 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:41:40,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:41:40,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1643041774, now seen corresponding path program 1 times [2020-09-04 16:41:40,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:41:40,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193402773] [2020-09-04 16:41:40,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:41:40,671 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:41:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:41,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:41:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:41,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:41:41,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193402773] [2020-09-04 16:41:41,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:41:41,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 16:41:41,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174606165] [2020-09-04 16:41:41,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 16:41:41,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:41:41,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 16:41:41,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-04 16:41:41,149 INFO L87 Difference]: Start difference. First operand 196 states and 208 transitions. Second operand 14 states. [2020-09-04 16:41:43,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:41:43,736 INFO L93 Difference]: Finished difference Result 589 states and 622 transitions. [2020-09-04 16:41:43,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-04 16:41:43,737 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-09-04 16:41:43,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:41:43,742 INFO L225 Difference]: With dead ends: 589 [2020-09-04 16:41:43,742 INFO L226 Difference]: Without dead ends: 586 [2020-09-04 16:41:43,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=252, Invalid=804, Unknown=0, NotChecked=0, Total=1056 [2020-09-04 16:41:43,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-09-04 16:41:43,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 213. [2020-09-04 16:41:43,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-09-04 16:41:43,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 226 transitions. [2020-09-04 16:41:43,806 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 226 transitions. Word has length 54 [2020-09-04 16:41:43,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:41:43,807 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 226 transitions. [2020-09-04 16:41:43,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 16:41:43,807 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 226 transitions. [2020-09-04 16:41:43,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-04 16:41:43,809 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:41:43,809 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] [2020-09-04 16:41:43,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 16:41:43,810 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:41:43,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:41:43,811 INFO L82 PathProgramCache]: Analyzing trace with hash 358720869, now seen corresponding path program 1 times [2020-09-04 16:41:43,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:41:43,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885355044] [2020-09-04 16:41:43,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:41:43,866 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:41:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:44,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:41:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:44,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:41:44,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885355044] [2020-09-04 16:41:44,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:41:44,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 16:41:44,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162533527] [2020-09-04 16:41:44,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 16:41:44,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:41:44,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 16:41:44,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-04 16:41:44,025 INFO L87 Difference]: Start difference. First operand 213 states and 226 transitions. Second operand 8 states. [2020-09-04 16:41:44,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:41:44,695 INFO L93 Difference]: Finished difference Result 297 states and 316 transitions. [2020-09-04 16:41:44,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 16:41:44,695 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-09-04 16:41:44,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:41:44,698 INFO L225 Difference]: With dead ends: 297 [2020-09-04 16:41:44,698 INFO L226 Difference]: Without dead ends: 267 [2020-09-04 16:41:44,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-04 16:41:44,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-09-04 16:41:44,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 248. [2020-09-04 16:41:44,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-09-04 16:41:44,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 268 transitions. [2020-09-04 16:41:44,745 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 268 transitions. Word has length 54 [2020-09-04 16:41:44,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:41:44,746 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 268 transitions. [2020-09-04 16:41:44,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 16:41:44,746 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 268 transitions. [2020-09-04 16:41:44,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-04 16:41:44,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:41:44,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:41:44,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 16:41:44,748 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:41:44,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:41:44,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1270543956, now seen corresponding path program 1 times [2020-09-04 16:41:44,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:41:44,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475168185] [2020-09-04 16:41:44,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:41:44,753 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:41:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:44,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:41:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:44,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:41:44,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475168185] [2020-09-04 16:41:44,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:41:44,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:41:44,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967672117] [2020-09-04 16:41:44,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:41:44,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:41:44,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:41:44,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:41:44,817 INFO L87 Difference]: Start difference. First operand 248 states and 268 transitions. Second operand 4 states. [2020-09-04 16:41:45,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:41:45,157 INFO L93 Difference]: Finished difference Result 254 states and 274 transitions. [2020-09-04 16:41:45,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 16:41:45,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-09-04 16:41:45,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:41:45,161 INFO L225 Difference]: With dead ends: 254 [2020-09-04 16:41:45,161 INFO L226 Difference]: Without dead ends: 249 [2020-09-04 16:41:45,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:41:45,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-09-04 16:41:45,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2020-09-04 16:41:45,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-09-04 16:41:45,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 269 transitions. [2020-09-04 16:41:45,245 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 269 transitions. Word has length 56 [2020-09-04 16:41:45,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:41:45,245 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 269 transitions. [2020-09-04 16:41:45,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:41:45,245 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 269 transitions. [2020-09-04 16:41:45,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-04 16:41:45,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:41:45,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:41:45,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 16:41:45,247 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:41:45,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:41:45,248 INFO L82 PathProgramCache]: Analyzing trace with hash 2002844954, now seen corresponding path program 1 times [2020-09-04 16:41:45,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:41:45,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435444654] [2020-09-04 16:41:45,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:41:45,252 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:41:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:41:45,275 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:41:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:41:45,298 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:41:45,348 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:41:45,349 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:41:45,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 16:41:45,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:41:45 BoogieIcfgContainer [2020-09-04 16:41:45,382 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:41:45,386 INFO L168 Benchmark]: Toolchain (without parser) took 13912.40 ms. Allocated memory was 138.9 MB in the beginning and 358.1 MB in the end (delta: 219.2 MB). Free memory was 102.0 MB in the beginning and 303.2 MB in the end (delta: -201.2 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-09-04 16:41:45,387 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-04 16:41:45,387 INFO L168 Benchmark]: CACSL2BoogieTranslator took 817.56 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 101.5 MB in the beginning and 171.2 MB in the end (delta: -69.6 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2020-09-04 16:41:45,388 INFO L168 Benchmark]: Boogie Preprocessor took 96.04 ms. Allocated memory is still 203.9 MB. Free memory was 171.2 MB in the beginning and 168.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-09-04 16:41:45,389 INFO L168 Benchmark]: RCFGBuilder took 953.36 ms. Allocated memory is still 203.9 MB. Free memory was 167.2 MB in the beginning and 104.7 MB in the end (delta: 62.5 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. [2020-09-04 16:41:45,389 INFO L168 Benchmark]: TraceAbstraction took 12038.41 ms. Allocated memory was 203.9 MB in the beginning and 358.1 MB in the end (delta: 154.1 MB). Free memory was 104.7 MB in the beginning and 303.2 MB in the end (delta: -198.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:41:45,393 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 817.56 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 101.5 MB in the beginning and 171.2 MB in the end (delta: -69.6 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.04 ms. Allocated memory is still 203.9 MB. Free memory was 171.2 MB in the beginning and 168.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 953.36 ms. Allocated memory is still 203.9 MB. Free memory was 167.2 MB in the beginning and 104.7 MB in the end (delta: 62.5 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12038.41 ms. Allocated memory was 203.9 MB in the beginning and 358.1 MB in the end (delta: 154.1 MB). Free memory was 104.7 MB in the beginning and 303.2 MB in the end (delta: -198.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1029]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* list = malloc(sizeof(SLL)); [L993] list->next = ((void*)0) [L994] list->prev = ((void*)0) [L995] COND FALSE !(!(list != ((void*)0))) [L995] COND FALSE !(__VERIFIER_nondet_int()) [L995] list->inner = malloc(sizeof(SLL)) [L995] EXPR list->inner [L995] list->inner->next = ((void*)0) [L995] EXPR list->inner [L995] list->inner->inner = ((void*)0) [L995] EXPR list->inner [L995] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L995] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L997] SLL* end = list; [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1011] end = ((void*)0) [L1012] end = list [L1015] COND FALSE !(!(((void*)0) != end)) [L1017] COND TRUE ((void*)0) != end [L1019] int len = 0; [L1020] EXPR end->inner [L1020] SLL* inner = end->inner; [L1021] COND TRUE ((void*)0) != inner [L1023] COND TRUE len == 0 [L1024] len = 1 [L1027] COND FALSE !(!(((void*)0) != inner)) [L1028] EXPR inner->inner [L1028] COND FALSE !(!(((void*)0) == inner->inner)) [L1029] EXPR inner->next [L1029] COND TRUE !(((void*)0) != inner->next) [L1029] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 171 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.9s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 8.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1961 SDtfs, 3372 SDslu, 5935 SDs, 0 SdLazy, 4112 SolverSat, 110 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=249occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 12 MinimizatonAttempts, 923 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...