/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-ext2-properties/list_and_tree_cnstr-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 13:30:06,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 13:30:06,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 13:30:06,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 13:30:06,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 13:30:06,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 13:30:06,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 13:30:06,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 13:30:06,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 13:30:06,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 13:30:06,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 13:30:06,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 13:30:06,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 13:30:06,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 13:30:06,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 13:30:06,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 13:30:06,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 13:30:06,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 13:30:06,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 13:30:06,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 13:30:06,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 13:30:06,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 13:30:06,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 13:30:06,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 13:30:06,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 13:30:06,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 13:30:06,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 13:30:06,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 13:30:06,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 13:30:06,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 13:30:06,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 13:30:06,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 13:30:06,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 13:30:06,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 13:30:06,231 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 13:30:06,231 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 13:30:06,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 13:30:06,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 13:30:06,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 13:30:06,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 13:30:06,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 13:30:06,236 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 13:30:06,252 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 13:30:06,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 13:30:06,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 13:30:06,254 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 13:30:06,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 13:30:06,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 13:30:06,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 13:30:06,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 13:30:06,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 13:30:06,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 13:30:06,257 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 13:30:06,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 13:30:06,257 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 13:30:06,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 13:30:06,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 13:30:06,258 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 13:30:06,258 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 13:30:06,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 13:30:06,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:30:06,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 13:30:06,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 13:30:06,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 13:30:06,261 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 13:30:06,556 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 13:30:06,569 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 13:30:06,573 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 13:30:06,574 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 13:30:06,574 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 13:30:06,575 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-07-17 13:30:06,638 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8be827a60/5cb43d1be657443e9583c68efe5b34b7/FLAG82d93e984 [2020-07-17 13:30:07,179 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 13:30:07,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-07-17 13:30:07,195 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8be827a60/5cb43d1be657443e9583c68efe5b34b7/FLAG82d93e984 [2020-07-17 13:30:07,479 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8be827a60/5cb43d1be657443e9583c68efe5b34b7 [2020-07-17 13:30:07,488 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 13:30:07,491 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 13:30:07,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 13:30:07,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 13:30:07,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 13:30:07,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:30:07" (1/1) ... [2020-07-17 13:30:07,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5240791d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:07, skipping insertion in model container [2020-07-17 13:30:07,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:30:07" (1/1) ... [2020-07-17 13:30:07,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 13:30:07,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 13:30:07,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:30:07,962 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 13:30:08,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:30:08,072 INFO L208 MainTranslator]: Completed translation [2020-07-17 13:30:08,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:08 WrapperNode [2020-07-17 13:30:08,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 13:30:08,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 13:30:08,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 13:30:08,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 13:30:08,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:08" (1/1) ... [2020-07-17 13:30:08,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:08" (1/1) ... [2020-07-17 13:30:08,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:08" (1/1) ... [2020-07-17 13:30:08,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:08" (1/1) ... [2020-07-17 13:30:08,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:08" (1/1) ... [2020-07-17 13:30:08,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:08" (1/1) ... [2020-07-17 13:30:08,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:08" (1/1) ... [2020-07-17 13:30:08,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 13:30:08,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 13:30:08,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 13:30:08,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 13:30:08,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:30:08,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 13:30:08,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 13:30:08,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-17 13:30:08,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-17 13:30:08,208 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-07-17 13:30:08,209 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 13:30:08,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 13:30:08,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 13:30:08,209 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-17 13:30:08,209 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-17 13:30:08,210 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-17 13:30:08,210 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-17 13:30:08,210 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-17 13:30:08,210 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-17 13:30:08,210 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-17 13:30:08,210 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-17 13:30:08,211 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-17 13:30:08,211 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-17 13:30:08,211 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-17 13:30:08,211 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-17 13:30:08,211 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-17 13:30:08,211 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-17 13:30:08,212 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-17 13:30:08,212 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-17 13:30:08,212 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-17 13:30:08,212 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-17 13:30:08,212 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-17 13:30:08,212 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-17 13:30:08,213 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-17 13:30:08,213 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-17 13:30:08,213 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-17 13:30:08,213 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-17 13:30:08,213 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-17 13:30:08,213 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-17 13:30:08,213 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-17 13:30:08,214 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-17 13:30:08,214 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-17 13:30:08,214 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-17 13:30:08,214 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-17 13:30:08,214 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-17 13:30:08,214 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-17 13:30:08,215 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-17 13:30:08,215 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-17 13:30:08,215 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-17 13:30:08,215 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-17 13:30:08,215 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-17 13:30:08,215 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-17 13:30:08,216 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-17 13:30:08,216 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-17 13:30:08,216 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-17 13:30:08,216 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-17 13:30:08,216 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-17 13:30:08,216 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-17 13:30:08,216 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-17 13:30:08,217 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-17 13:30:08,217 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-17 13:30:08,217 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-17 13:30:08,217 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-17 13:30:08,217 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-17 13:30:08,217 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-17 13:30:08,218 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 13:30:08,218 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-17 13:30:08,218 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-17 13:30:08,218 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-17 13:30:08,218 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-17 13:30:08,218 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-17 13:30:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-17 13:30:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-17 13:30:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-17 13:30:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 13:30:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-17 13:30:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-17 13:30:08,220 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-17 13:30:08,220 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-17 13:30:08,220 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-17 13:30:08,220 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-17 13:30:08,220 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-17 13:30:08,220 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-17 13:30:08,221 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-17 13:30:08,221 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-17 13:30:08,221 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-17 13:30:08,221 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-17 13:30:08,221 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-17 13:30:08,221 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-17 13:30:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-17 13:30:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-17 13:30:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-17 13:30:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-17 13:30:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-17 13:30:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-17 13:30:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-17 13:30:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-17 13:30:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-17 13:30:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-17 13:30:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-17 13:30:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-17 13:30:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-17 13:30:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-17 13:30:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-17 13:30:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-17 13:30:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-17 13:30:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-17 13:30:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-17 13:30:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-17 13:30:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-17 13:30:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-17 13:30:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-17 13:30:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-17 13:30:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-17 13:30:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-17 13:30:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-17 13:30:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-17 13:30:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-17 13:30:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-07-17 13:30:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 13:30:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 13:30:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-17 13:30:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-17 13:30:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 13:30:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 13:30:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 13:30:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 13:30:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 13:30:08,590 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-07-17 13:30:09,013 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 13:30:09,014 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-07-17 13:30:09,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:30:09 BoogieIcfgContainer [2020-07-17 13:30:09,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 13:30:09,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 13:30:09,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 13:30:09,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 13:30:09,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 01:30:07" (1/3) ... [2020-07-17 13:30:09,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1528c82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:30:09, skipping insertion in model container [2020-07-17 13:30:09,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:08" (2/3) ... [2020-07-17 13:30:09,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1528c82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:30:09, skipping insertion in model container [2020-07-17 13:30:09,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:30:09" (3/3) ... [2020-07-17 13:30:09,028 INFO L109 eAbstractionObserver]: Analyzing ICFG list_and_tree_cnstr-1.i [2020-07-17 13:30:09,038 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 13:30:09,047 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 13:30:09,061 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 13:30:09,083 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 13:30:09,084 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 13:30:09,084 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 13:30:09,084 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 13:30:09,084 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 13:30:09,085 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 13:30:09,085 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 13:30:09,085 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 13:30:09,104 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-07-17 13:30:09,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-17 13:30:09,118 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:09,119 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] [2020-07-17 13:30:09,120 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:09,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:09,126 INFO L82 PathProgramCache]: Analyzing trace with hash -652445128, now seen corresponding path program 1 times [2020-07-17 13:30:09,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:09,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332768529] [2020-07-17 13:30:09,152 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:09,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:09,353 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:09,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332768529] [2020-07-17 13:30:09,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:09,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 13:30:09,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749262041] [2020-07-17 13:30:09,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 13:30:09,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:09,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 13:30:09,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:30:09,381 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 3 states. [2020-07-17 13:30:09,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:09,780 INFO L93 Difference]: Finished difference Result 342 states and 400 transitions. [2020-07-17 13:30:09,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 13:30:09,782 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-07-17 13:30:09,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:09,794 INFO L225 Difference]: With dead ends: 342 [2020-07-17 13:30:09,794 INFO L226 Difference]: Without dead ends: 166 [2020-07-17 13:30:09,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 13:30:09,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-07-17 13:30:09,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-07-17 13:30:09,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-07-17 13:30:09,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 183 transitions. [2020-07-17 13:30:09,861 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 183 transitions. Word has length 31 [2020-07-17 13:30:09,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:09,861 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 183 transitions. [2020-07-17 13:30:09,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 13:30:09,862 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 183 transitions. [2020-07-17 13:30:09,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-17 13:30:09,864 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:09,865 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] [2020-07-17 13:30:09,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 13:30:09,865 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:09,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:09,866 INFO L82 PathProgramCache]: Analyzing trace with hash 473660712, now seen corresponding path program 1 times [2020-07-17 13:30:09,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:09,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730960730] [2020-07-17 13:30:09,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:09,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:09,969 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:09,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730960730] [2020-07-17 13:30:09,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:09,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 13:30:09,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578884213] [2020-07-17 13:30:09,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 13:30:09,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:09,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 13:30:09,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 13:30:09,973 INFO L87 Difference]: Start difference. First operand 166 states and 183 transitions. Second operand 5 states. [2020-07-17 13:30:10,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:10,310 INFO L93 Difference]: Finished difference Result 251 states and 277 transitions. [2020-07-17 13:30:10,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 13:30:10,310 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-07-17 13:30:10,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:10,314 INFO L225 Difference]: With dead ends: 251 [2020-07-17 13:30:10,314 INFO L226 Difference]: Without dead ends: 201 [2020-07-17 13:30:10,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 13:30:10,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-07-17 13:30:10,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2020-07-17 13:30:10,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-07-17 13:30:10,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 222 transitions. [2020-07-17 13:30:10,345 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 222 transitions. Word has length 41 [2020-07-17 13:30:10,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:10,346 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 222 transitions. [2020-07-17 13:30:10,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 13:30:10,346 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 222 transitions. [2020-07-17 13:30:10,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-17 13:30:10,349 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:10,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:10,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 13:30:10,350 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:10,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:10,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1870874818, now seen corresponding path program 1 times [2020-07-17 13:30:10,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:10,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681971797] [2020-07-17 13:30:10,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:10,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:10,448 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:10,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681971797] [2020-07-17 13:30:10,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:10,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 13:30:10,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592576827] [2020-07-17 13:30:10,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 13:30:10,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:10,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 13:30:10,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 13:30:10,451 INFO L87 Difference]: Start difference. First operand 200 states and 222 transitions. Second operand 4 states. [2020-07-17 13:30:10,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:10,730 INFO L93 Difference]: Finished difference Result 321 states and 359 transitions. [2020-07-17 13:30:10,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 13:30:10,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-07-17 13:30:10,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:10,732 INFO L225 Difference]: With dead ends: 321 [2020-07-17 13:30:10,733 INFO L226 Difference]: Without dead ends: 202 [2020-07-17 13:30:10,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 13:30:10,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-07-17 13:30:10,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-07-17 13:30:10,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-07-17 13:30:10,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 224 transitions. [2020-07-17 13:30:10,768 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 224 transitions. Word has length 54 [2020-07-17 13:30:10,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:10,769 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 224 transitions. [2020-07-17 13:30:10,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 13:30:10,769 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 224 transitions. [2020-07-17 13:30:10,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-17 13:30:10,776 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:10,776 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] [2020-07-17 13:30:10,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 13:30:10,776 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:10,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:10,779 INFO L82 PathProgramCache]: Analyzing trace with hash 129316031, now seen corresponding path program 1 times [2020-07-17 13:30:10,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:10,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926753111] [2020-07-17 13:30:10,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:10,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:10,968 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:10,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926753111] [2020-07-17 13:30:10,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:10,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-17 13:30:10,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089095909] [2020-07-17 13:30:10,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 13:30:10,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:10,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 13:30:10,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-17 13:30:10,971 INFO L87 Difference]: Start difference. First operand 202 states and 224 transitions. Second operand 7 states. [2020-07-17 13:30:11,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:11,321 INFO L93 Difference]: Finished difference Result 279 states and 306 transitions. [2020-07-17 13:30:11,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-17 13:30:11,321 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-07-17 13:30:11,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:11,323 INFO L225 Difference]: With dead ends: 279 [2020-07-17 13:30:11,324 INFO L226 Difference]: Without dead ends: 273 [2020-07-17 13:30:11,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-17 13:30:11,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-07-17 13:30:11,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 215. [2020-07-17 13:30:11,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-07-17 13:30:11,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 240 transitions. [2020-07-17 13:30:11,360 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 240 transitions. Word has length 56 [2020-07-17 13:30:11,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:11,361 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 240 transitions. [2020-07-17 13:30:11,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 13:30:11,361 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 240 transitions. [2020-07-17 13:30:11,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-07-17 13:30:11,362 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:11,362 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:11,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 13:30:11,363 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:11,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:11,363 INFO L82 PathProgramCache]: Analyzing trace with hash 593034583, now seen corresponding path program 1 times [2020-07-17 13:30:11,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:11,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314672350] [2020-07-17 13:30:11,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:11,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 13:30:11,378 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:458) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:290) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:191) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-17 13:30:11,384 INFO L168 Benchmark]: Toolchain (without parser) took 3893.46 ms. Allocated memory was 145.2 MB in the beginning and 247.5 MB in the end (delta: 102.2 MB). Free memory was 101.4 MB in the beginning and 211.7 MB in the end (delta: -110.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 13:30:11,384 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 145.2 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 13:30:11,386 INFO L168 Benchmark]: CACSL2BoogieTranslator took 581.14 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 101.0 MB in the beginning and 167.4 MB in the end (delta: -66.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:11,386 INFO L168 Benchmark]: Boogie Preprocessor took 76.80 ms. Allocated memory is still 201.9 MB. Free memory was 167.4 MB in the beginning and 164.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:11,387 INFO L168 Benchmark]: RCFGBuilder took 868.47 ms. Allocated memory is still 201.9 MB. Free memory was 164.1 MB in the beginning and 97.5 MB in the end (delta: 66.6 MB). Peak memory consumption was 66.6 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:11,388 INFO L168 Benchmark]: TraceAbstraction took 2360.66 ms. Allocated memory was 201.9 MB in the beginning and 247.5 MB in the end (delta: 45.6 MB). Free memory was 96.9 MB in the beginning and 211.7 MB in the end (delta: -114.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 13:30:11,392 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 145.2 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 581.14 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 101.0 MB in the beginning and 167.4 MB in the end (delta: -66.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 76.80 ms. Allocated memory is still 201.9 MB. Free memory was 167.4 MB in the beginning and 164.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 868.47 ms. Allocated memory is still 201.9 MB. Free memory was 164.1 MB in the beginning and 97.5 MB in the end (delta: 66.6 MB). Peak memory consumption was 66.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2360.66 ms. Allocated memory was 201.9 MB in the beginning and 247.5 MB in the end (delta: 45.6 MB). Free memory was 96.9 MB in the beginning and 211.7 MB in the end (delta: -114.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:458) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...