/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/list-ext3-properties/dll_nullified-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:07:03,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:07:03,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:07:03,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 19:07:03,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 19:07:03,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 19:07:03,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 19:07:03,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 19:07:03,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 19:07:03,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 19:07:03,271 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 19:07:03,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 19:07:03,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:07:03,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:07:03,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:07:03,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:07:03,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:07:03,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:07:03,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:07:03,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:07:03,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:07:03,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:07:03,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:07:03,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:07:03,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 19:07:03,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 19:07:03,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 19:07:03,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 19:07:03,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 19:07:03,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 19:07:03,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 19:07:03,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 19:07:03,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 19:07:03,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 19:07:03,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 19:07:03,338 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 19:07:03,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 19:07:03,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 19:07:03,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:07:03,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:07:03,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:07:03,346 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:07:03,367 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:07:03,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:07:03,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:07:03,370 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:07:03,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:07:03,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:07:03,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:07:03,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:07:03,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:07:03,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:07:03,373 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:07:03,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:07:03,373 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:07:03,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:07:03,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:07:03,374 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:07:03,375 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:07:03,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:07:03,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:07:03,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:07:03,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:07:03,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:07:03,376 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:07:03,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:07:03,788 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:07:03,793 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:07:03,795 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:07:03,796 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:07:03,796 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-08-22 19:07:03,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16b091160/b178e279e47b4fc890a869d804cfb11e/FLAGd4faa7323 [2020-08-22 19:07:04,578 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:07:04,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-08-22 19:07:04,596 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16b091160/b178e279e47b4fc890a869d804cfb11e/FLAGd4faa7323 [2020-08-22 19:07:04,857 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16b091160/b178e279e47b4fc890a869d804cfb11e [2020-08-22 19:07:04,870 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:07:04,872 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:07:04,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:07:04,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:07:04,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:07:04,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:07:04" (1/1) ... [2020-08-22 19:07:04,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43d73a3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:07:04, skipping insertion in model container [2020-08-22 19:07:04,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:07:04" (1/1) ... [2020-08-22 19:07:04,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:07:04,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:07:05,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:07:05,536 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:07:05,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:07:05,657 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:07:05,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:07:05 WrapperNode [2020-08-22 19:07:05,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:07:05,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:07:05,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:07:05,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:07:05,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:07:05" (1/1) ... [2020-08-22 19:07:05,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:07:05" (1/1) ... [2020-08-22 19:07:05,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:07:05" (1/1) ... [2020-08-22 19:07:05,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:07:05" (1/1) ... [2020-08-22 19:07:05,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:07:05" (1/1) ... [2020-08-22 19:07:05,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:07:05" (1/1) ... [2020-08-22 19:07:05,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:07:05" (1/1) ... [2020-08-22 19:07:05,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:07:05,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:07:05,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:07:05,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:07:05,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:07:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:07:05,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:07:05,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:07:05,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-22 19:07:05,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-22 19:07:05,836 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-08-22 19:07:05,836 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-08-22 19:07:05,837 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:07:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:07:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:07:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-22 19:07:05,837 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-22 19:07:05,839 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 19:07:05,840 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 19:07:05,840 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 19:07:05,840 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 19:07:05,841 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 19:07:05,841 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 19:07:05,841 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 19:07:05,842 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 19:07:05,842 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 19:07:05,843 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 19:07:05,844 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 19:07:05,846 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 19:07:05,847 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 19:07:05,847 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 19:07:05,847 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 19:07:05,847 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 19:07:05,848 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 19:07:05,848 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 19:07:05,849 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 19:07:05,849 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 19:07:05,849 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 19:07:05,851 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 19:07:05,851 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 19:07:05,851 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 19:07:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 19:07:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 19:07:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 19:07:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 19:07:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 19:07:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 19:07:05,853 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 19:07:05,853 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 19:07:05,853 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 19:07:05,853 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 19:07:05,853 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 19:07:05,853 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 19:07:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 19:07:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 19:07:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 19:07:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 19:07:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 19:07:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 19:07:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 19:07:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 19:07:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 19:07:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 19:07:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 19:07:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 19:07:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 19:07:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 19:07:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 19:07:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 19:07:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 19:07:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 19:07:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 19:07:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 19:07:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 19:07:05,857 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 19:07:05,857 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 19:07:05,857 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 19:07:05,857 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 19:07:05,857 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 19:07:05,857 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 19:07:05,857 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 19:07:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 19:07:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 19:07:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 19:07:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 19:07:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 19:07:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 19:07:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 19:07:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 19:07:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 19:07:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 19:07:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 19:07:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 19:07:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 19:07:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 19:07:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 19:07:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 19:07:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 19:07:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 19:07:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 19:07:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 19:07:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 19:07:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 19:07:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 19:07:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 19:07:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 19:07:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 19:07:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 19:07:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 19:07:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 19:07:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 19:07:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 19:07:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 19:07:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 19:07:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 19:07:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 19:07:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 19:07:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 19:07:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 19:07:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 19:07:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-08-22 19:07:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-08-22 19:07:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 19:07:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 19:07:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 19:07:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:07:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 19:07:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 19:07:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 19:07:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:07:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:07:06,257 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-08-22 19:07:06,589 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:07:06,590 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-22 19:07:06,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:07:06 BoogieIcfgContainer [2020-08-22 19:07:06,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:07:06,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:07:06,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:07:06,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:07:06,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:07:04" (1/3) ... [2020-08-22 19:07:06,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da4b206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:07:06, skipping insertion in model container [2020-08-22 19:07:06,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:07:05" (2/3) ... [2020-08-22 19:07:06,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da4b206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:07:06, skipping insertion in model container [2020-08-22 19:07:06,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:07:06" (3/3) ... [2020-08-22 19:07:06,609 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2020-08-22 19:07:06,624 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:07:06,636 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:07:06,656 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:07:06,688 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:07:06,688 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:07:06,688 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:07:06,688 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:07:06,689 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:07:06,689 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:07:06,689 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:07:06,689 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:07:06,716 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-08-22 19:07:06,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-08-22 19:07:06,735 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:07:06,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:07:06,737 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:07:06,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:07:06,748 INFO L82 PathProgramCache]: Analyzing trace with hash 136898680, now seen corresponding path program 1 times [2020-08-22 19:07:06,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:07:06,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560211895] [2020-08-22 19:07:06,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:07:06,876 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:07:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:07,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:07:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:07,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 19:07:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:07,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:07:07,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560211895] [2020-08-22 19:07:07,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:07:07,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 19:07:07,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009281762] [2020-08-22 19:07:07,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 19:07:07,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:07:07,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 19:07:07,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:07:07,195 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 4 states. [2020-08-22 19:07:07,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:07:07,692 INFO L93 Difference]: Finished difference Result 230 states and 265 transitions. [2020-08-22 19:07:07,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 19:07:07,695 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-08-22 19:07:07,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:07:07,711 INFO L225 Difference]: With dead ends: 230 [2020-08-22 19:07:07,712 INFO L226 Difference]: Without dead ends: 153 [2020-08-22 19:07:07,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 19:07:07,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-22 19:07:07,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 92. [2020-08-22 19:07:07,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-08-22 19:07:07,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2020-08-22 19:07:07,798 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 32 [2020-08-22 19:07:07,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:07:07,799 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2020-08-22 19:07:07,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 19:07:07,799 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2020-08-22 19:07:07,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-08-22 19:07:07,801 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:07:07,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:07:07,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:07:07,803 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:07:07,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:07:07,804 INFO L82 PathProgramCache]: Analyzing trace with hash 272796752, now seen corresponding path program 1 times [2020-08-22 19:07:07,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:07:07,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509773563] [2020-08-22 19:07:07,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:07:07,811 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:07:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:07,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:07:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:07,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 19:07:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:08,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:07:08,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509773563] [2020-08-22 19:07:08,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:07:08,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 19:07:08,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334306624] [2020-08-22 19:07:08,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 19:07:08,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:07:08,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 19:07:08,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 19:07:08,028 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 7 states. [2020-08-22 19:07:08,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:07:08,527 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2020-08-22 19:07:08,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 19:07:08,528 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-08-22 19:07:08,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:07:08,530 INFO L225 Difference]: With dead ends: 172 [2020-08-22 19:07:08,531 INFO L226 Difference]: Without dead ends: 112 [2020-08-22 19:07:08,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-08-22 19:07:08,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-08-22 19:07:08,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 93. [2020-08-22 19:07:08,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-08-22 19:07:08,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2020-08-22 19:07:08,552 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 32 [2020-08-22 19:07:08,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:07:08,552 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2020-08-22 19:07:08,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 19:07:08,553 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2020-08-22 19:07:08,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 19:07:08,555 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:07:08,555 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] [2020-08-22 19:07:08,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:07:08,556 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:07:08,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:07:08,557 INFO L82 PathProgramCache]: Analyzing trace with hash -54471897, now seen corresponding path program 1 times [2020-08-22 19:07:08,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:07:08,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181662477] [2020-08-22 19:07:08,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:07:08,621 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:07:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:08,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:07:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:08,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 19:07:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:08,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:07:08,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181662477] [2020-08-22 19:07:08,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:07:08,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 19:07:08,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394302256] [2020-08-22 19:07:08,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 19:07:08,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:07:08,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 19:07:08,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 19:07:08,916 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand 9 states. [2020-08-22 19:07:09,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:07:09,434 INFO L93 Difference]: Finished difference Result 193 states and 213 transitions. [2020-08-22 19:07:09,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 19:07:09,435 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-08-22 19:07:09,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:07:09,437 INFO L225 Difference]: With dead ends: 193 [2020-08-22 19:07:09,439 INFO L226 Difference]: Without dead ends: 133 [2020-08-22 19:07:09,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-08-22 19:07:09,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-08-22 19:07:09,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 114. [2020-08-22 19:07:09,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-22 19:07:09,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 125 transitions. [2020-08-22 19:07:09,480 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 125 transitions. Word has length 51 [2020-08-22 19:07:09,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:07:09,481 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 125 transitions. [2020-08-22 19:07:09,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 19:07:09,481 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 125 transitions. [2020-08-22 19:07:09,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 19:07:09,484 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:07:09,484 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:07:09,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 19:07:09,485 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:07:09,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:07:09,485 INFO L82 PathProgramCache]: Analyzing trace with hash -586426640, now seen corresponding path program 2 times [2020-08-22 19:07:09,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:07:09,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61953378] [2020-08-22 19:07:09,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:07:09,539 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:07:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:09,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:07:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:09,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 19:07:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:09,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:07:09,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61953378] [2020-08-22 19:07:09,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:07:09,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 19:07:09,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268382466] [2020-08-22 19:07:09,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 19:07:09,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:07:09,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 19:07:09,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 19:07:09,726 INFO L87 Difference]: Start difference. First operand 114 states and 125 transitions. Second operand 7 states. [2020-08-22 19:07:10,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:07:10,103 INFO L93 Difference]: Finished difference Result 195 states and 215 transitions. [2020-08-22 19:07:10,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 19:07:10,104 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-08-22 19:07:10,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:07:10,107 INFO L225 Difference]: With dead ends: 195 [2020-08-22 19:07:10,108 INFO L226 Difference]: Without dead ends: 114 [2020-08-22 19:07:10,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-08-22 19:07:10,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-08-22 19:07:10,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-08-22 19:07:10,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-22 19:07:10,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2020-08-22 19:07:10,132 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 70 [2020-08-22 19:07:10,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:07:10,132 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2020-08-22 19:07:10,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 19:07:10,133 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2020-08-22 19:07:10,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-22 19:07:10,135 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:07:10,136 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:07:10,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 19:07:10,136 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:07:10,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:07:10,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1356086606, now seen corresponding path program 1 times [2020-08-22 19:07:10,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:07:10,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815303272] [2020-08-22 19:07:10,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:07:10,180 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:07:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:10,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:07:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:10,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 19:07:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:10,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:07:10,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815303272] [2020-08-22 19:07:10,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:07:10,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 19:07:10,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347936149] [2020-08-22 19:07:10,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 19:07:10,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:07:10,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 19:07:10,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-22 19:07:10,478 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand 11 states. [2020-08-22 19:07:10,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:07:10,985 INFO L93 Difference]: Finished difference Result 214 states and 233 transitions. [2020-08-22 19:07:10,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 19:07:10,985 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-08-22 19:07:10,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:07:10,990 INFO L225 Difference]: With dead ends: 214 [2020-08-22 19:07:10,990 INFO L226 Difference]: Without dead ends: 154 [2020-08-22 19:07:10,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-08-22 19:07:10,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-22 19:07:11,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 135. [2020-08-22 19:07:11,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-08-22 19:07:11,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 146 transitions. [2020-08-22 19:07:11,025 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 146 transitions. Word has length 71 [2020-08-22 19:07:11,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:07:11,029 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 146 transitions. [2020-08-22 19:07:11,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 19:07:11,029 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 146 transitions. [2020-08-22 19:07:11,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-22 19:07:11,042 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:07:11,043 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:07:11,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 19:07:11,044 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:07:11,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:07:11,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1395228995, now seen corresponding path program 2 times [2020-08-22 19:07:11,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:07:11,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482379217] [2020-08-22 19:07:11,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:07:11,112 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:07:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:11,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:07:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:11,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 19:07:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:11,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:07:11,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482379217] [2020-08-22 19:07:11,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:07:11,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 19:07:11,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254889078] [2020-08-22 19:07:11,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 19:07:11,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:07:11,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 19:07:11,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-22 19:07:11,494 INFO L87 Difference]: Start difference. First operand 135 states and 146 transitions. Second operand 13 states. [2020-08-22 19:07:12,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:07:12,065 INFO L93 Difference]: Finished difference Result 235 states and 255 transitions. [2020-08-22 19:07:12,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 19:07:12,066 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-08-22 19:07:12,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:07:12,068 INFO L225 Difference]: With dead ends: 235 [2020-08-22 19:07:12,070 INFO L226 Difference]: Without dead ends: 175 [2020-08-22 19:07:12,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2020-08-22 19:07:12,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-08-22 19:07:12,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 156. [2020-08-22 19:07:12,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-08-22 19:07:12,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 168 transitions. [2020-08-22 19:07:12,112 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 168 transitions. Word has length 91 [2020-08-22 19:07:12,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:07:12,116 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 168 transitions. [2020-08-22 19:07:12,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 19:07:12,123 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 168 transitions. [2020-08-22 19:07:12,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-08-22 19:07:12,130 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:07:12,130 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:07:12,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 19:07:12,131 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:07:12,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:07:12,131 INFO L82 PathProgramCache]: Analyzing trace with hash 274581320, now seen corresponding path program 3 times [2020-08-22 19:07:12,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:07:12,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140598088] [2020-08-22 19:07:12,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:07:12,170 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:07:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:12,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:07:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:12,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 19:07:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:12,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:07:12,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140598088] [2020-08-22 19:07:12,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:07:12,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-22 19:07:12,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141402224] [2020-08-22 19:07:12,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 19:07:12,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:07:12,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 19:07:12,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-08-22 19:07:12,641 INFO L87 Difference]: Start difference. First operand 156 states and 168 transitions. Second operand 15 states. [2020-08-22 19:07:13,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:07:13,275 INFO L93 Difference]: Finished difference Result 256 states and 277 transitions. [2020-08-22 19:07:13,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 19:07:13,276 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 111 [2020-08-22 19:07:13,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:07:13,278 INFO L225 Difference]: With dead ends: 256 [2020-08-22 19:07:13,278 INFO L226 Difference]: Without dead ends: 196 [2020-08-22 19:07:13,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 19:07:13,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-22 19:07:13,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 177. [2020-08-22 19:07:13,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-08-22 19:07:13,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 190 transitions. [2020-08-22 19:07:13,306 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 190 transitions. Word has length 111 [2020-08-22 19:07:13,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:07:13,308 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 190 transitions. [2020-08-22 19:07:13,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 19:07:13,309 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 190 transitions. [2020-08-22 19:07:13,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-22 19:07:13,312 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:07:13,312 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:07:13,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 19:07:13,312 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:07:13,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:07:13,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1182686291, now seen corresponding path program 4 times [2020-08-22 19:07:13,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:07:13,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172204958] [2020-08-22 19:07:13,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:07:13,375 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:07:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:13,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:07:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:13,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 19:07:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:14,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:07:14,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172204958] [2020-08-22 19:07:14,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:07:14,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-08-22 19:07:14,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209186698] [2020-08-22 19:07:14,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 19:07:14,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:07:14,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 19:07:14,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-08-22 19:07:14,015 INFO L87 Difference]: Start difference. First operand 177 states and 190 transitions. Second operand 17 states. [2020-08-22 19:07:15,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:07:15,231 INFO L93 Difference]: Finished difference Result 308 states and 334 transitions. [2020-08-22 19:07:15,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 19:07:15,232 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 131 [2020-08-22 19:07:15,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:07:15,234 INFO L225 Difference]: With dead ends: 308 [2020-08-22 19:07:15,236 INFO L226 Difference]: Without dead ends: 253 [2020-08-22 19:07:15,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2020-08-22 19:07:15,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-08-22 19:07:15,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 183. [2020-08-22 19:07:15,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-08-22 19:07:15,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 197 transitions. [2020-08-22 19:07:15,281 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 197 transitions. Word has length 131 [2020-08-22 19:07:15,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:07:15,282 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 197 transitions. [2020-08-22 19:07:15,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 19:07:15,282 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 197 transitions. [2020-08-22 19:07:15,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-08-22 19:07:15,288 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:07:15,288 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:07:15,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 19:07:15,289 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:07:15,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:07:15,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1200683152, now seen corresponding path program 1 times [2020-08-22 19:07:15,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:07:15,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135672430] [2020-08-22 19:07:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:07:15,345 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:07:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:15,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:07:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:15,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 19:07:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:07:16,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135672430] [2020-08-22 19:07:16,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:07:16,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-08-22 19:07:16,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799038831] [2020-08-22 19:07:16,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 19:07:16,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:07:16,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 19:07:16,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-08-22 19:07:16,212 INFO L87 Difference]: Start difference. First operand 183 states and 197 transitions. Second operand 18 states. [2020-08-22 19:07:17,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:07:17,582 INFO L93 Difference]: Finished difference Result 286 states and 310 transitions. [2020-08-22 19:07:17,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 19:07:17,583 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 133 [2020-08-22 19:07:17,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:07:17,585 INFO L225 Difference]: With dead ends: 286 [2020-08-22 19:07:17,586 INFO L226 Difference]: Without dead ends: 231 [2020-08-22 19:07:17,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=164, Invalid=892, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 19:07:17,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-08-22 19:07:17,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 187. [2020-08-22 19:07:17,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-08-22 19:07:17,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 201 transitions. [2020-08-22 19:07:17,622 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 201 transitions. Word has length 133 [2020-08-22 19:07:17,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:07:17,622 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 201 transitions. [2020-08-22 19:07:17,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 19:07:17,623 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 201 transitions. [2020-08-22 19:07:17,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-08-22 19:07:17,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:07:17,625 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:07:17,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 19:07:17,626 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:07:17,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:07:17,626 INFO L82 PathProgramCache]: Analyzing trace with hash 2062394754, now seen corresponding path program 1 times [2020-08-22 19:07:17,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:07:17,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592451745] [2020-08-22 19:07:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:07:17,677 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:07:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:17,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:07:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:17,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 19:07:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:18,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:07:18,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592451745] [2020-08-22 19:07:18,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:07:18,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-08-22 19:07:18,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747650287] [2020-08-22 19:07:18,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 19:07:18,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:07:18,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 19:07:18,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-08-22 19:07:18,311 INFO L87 Difference]: Start difference. First operand 187 states and 201 transitions. Second operand 17 states. [2020-08-22 19:07:19,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:07:19,432 INFO L93 Difference]: Finished difference Result 281 states and 301 transitions. [2020-08-22 19:07:19,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 19:07:19,433 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 135 [2020-08-22 19:07:19,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:07:19,435 INFO L225 Difference]: With dead ends: 281 [2020-08-22 19:07:19,435 INFO L226 Difference]: Without dead ends: 253 [2020-08-22 19:07:19,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2020-08-22 19:07:19,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-08-22 19:07:19,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 195. [2020-08-22 19:07:19,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-08-22 19:07:19,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 209 transitions. [2020-08-22 19:07:19,473 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 209 transitions. Word has length 135 [2020-08-22 19:07:19,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:07:19,473 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 209 transitions. [2020-08-22 19:07:19,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 19:07:19,473 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 209 transitions. [2020-08-22 19:07:19,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-08-22 19:07:19,475 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:07:19,476 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:07:19,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 19:07:19,476 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:07:19,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:07:19,478 INFO L82 PathProgramCache]: Analyzing trace with hash -414346707, now seen corresponding path program 1 times [2020-08-22 19:07:19,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:07:19,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616733684] [2020-08-22 19:07:19,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:07:19,518 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:07:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:07:19,609 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:07:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:07:19,690 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:07:19,792 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 19:07:19,793 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 19:07:19,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 19:07:19,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 07:07:19 BoogieIcfgContainer [2020-08-22 19:07:19,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 19:07:19,854 INFO L168 Benchmark]: Toolchain (without parser) took 14980.67 ms. Allocated memory was 136.8 MB in the beginning and 389.5 MB in the end (delta: 252.7 MB). Free memory was 98.8 MB in the beginning and 81.2 MB in the end (delta: 17.6 MB). Peak memory consumption was 270.3 MB. Max. memory is 7.1 GB. [2020-08-22 19:07:19,855 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 136.8 MB. Free memory was 118.9 MB in the beginning and 118.5 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-08-22 19:07:19,856 INFO L168 Benchmark]: CACSL2BoogieTranslator took 785.17 ms. Allocated memory was 136.8 MB in the beginning and 202.4 MB in the end (delta: 65.5 MB). Free memory was 98.4 MB in the beginning and 168.5 MB in the end (delta: -70.1 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-08-22 19:07:19,857 INFO L168 Benchmark]: Boogie Preprocessor took 87.07 ms. Allocated memory is still 202.4 MB. Free memory was 168.5 MB in the beginning and 165.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-08-22 19:07:19,858 INFO L168 Benchmark]: RCFGBuilder took 849.94 ms. Allocated memory is still 202.4 MB. Free memory was 165.5 MB in the beginning and 114.5 MB in the end (delta: 51.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 7.1 GB. [2020-08-22 19:07:19,859 INFO L168 Benchmark]: TraceAbstraction took 13251.52 ms. Allocated memory was 202.4 MB in the beginning and 389.5 MB in the end (delta: 187.2 MB). Free memory was 114.5 MB in the beginning and 81.2 MB in the end (delta: 33.3 MB). Peak memory consumption was 220.5 MB. Max. memory is 7.1 GB. [2020-08-22 19:07:19,863 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 136.8 MB. Free memory was 118.9 MB in the beginning and 118.5 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 785.17 ms. Allocated memory was 136.8 MB in the beginning and 202.4 MB in the end (delta: 65.5 MB). Free memory was 98.4 MB in the beginning and 168.5 MB in the end (delta: -70.1 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.07 ms. Allocated memory is still 202.4 MB. Free memory was 168.5 MB in the beginning and 165.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 849.94 ms. Allocated memory is still 202.4 MB. Free memory was 165.5 MB in the beginning and 114.5 MB in the end (delta: 51.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13251.52 ms. Allocated memory was 202.4 MB in the beginning and 389.5 MB in the end (delta: 187.2 MB). Free memory was 114.5 MB in the beginning and 81.2 MB in the end (delta: 33.3 MB). Peak memory consumption was 220.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 605]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L588] const int len = 5; [L589] CALL, EXPR dll_create(len) [L568] DLL head = ((void *)0); [L569] COND TRUE len > 0 [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] new_head->data_0 = 0 [L575] new_head->data_1 = 0 [L576] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] new_head->next = head [L578] new_head->prev = ((void *)0) [L579] COND FALSE !(\read(head)) [L582] head = new_head [L583] len-- [L569] COND TRUE len > 0 [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] new_head->data_0 = 0 [L575] new_head->data_1 = 0 [L576] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] new_head->next = head [L578] new_head->prev = ((void *)0) [L579] COND TRUE \read(head) [L580] head->prev = new_head [L582] head = new_head [L583] len-- [L569] COND TRUE len > 0 [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] new_head->data_0 = 0 [L575] new_head->data_1 = 0 [L576] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] new_head->next = head [L578] new_head->prev = ((void *)0) [L579] COND TRUE \read(head) [L580] head->prev = new_head [L582] head = new_head [L583] len-- [L569] COND TRUE len > 0 [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] new_head->data_0 = 0 [L575] new_head->data_1 = 0 [L576] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] new_head->next = head [L578] new_head->prev = ((void *)0) [L579] COND TRUE \read(head) [L580] head->prev = new_head [L582] head = new_head [L583] len-- [L569] COND TRUE len > 0 [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] new_head->data_0 = 0 [L575] new_head->data_1 = 0 [L576] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] new_head->next = head [L578] new_head->prev = ((void *)0) [L579] COND TRUE \read(head) [L580] head->prev = new_head [L582] head = new_head [L583] len-- [L569] COND FALSE !(len > 0) [L585] return head; [L589] RET, EXPR dll_create(len) [L589] DLL head = dll_create(len); [L590] head->next [L590] COND TRUE head->next [L591] EXPR head->data_0 [L591] EXPR 0 != head->data_0 || 0 != head->data_1 [L591] EXPR head->data_1 [L591] EXPR 0 != head->data_0 || 0 != head->data_1 [L591] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L591] EXPR head->data_2 [L591] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L591] COND TRUE 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L605] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 112 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.1s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 920 SDtfs, 1491 SDslu, 6247 SDs, 0 SdLazy, 3420 SolverSat, 232 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 258 GetRequests, 63 SyntacticMatches, 8 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=195occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 328 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...