/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-properties/list_search-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:23:14,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:23:14,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:23:14,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:23:14,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:23:14,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:23:14,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:23:14,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:23:14,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:23:14,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:23:14,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:23:14,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:23:14,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:23:14,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:23:14,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:23:14,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:23:14,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:23:14,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:23:14,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:23:14,231 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:23:14,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:23:14,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:23:14,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:23:14,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:23:14,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:23:14,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:23:14,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:23:14,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:23:14,239 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:23:14,240 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:23:14,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:23:14,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:23:14,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:23:14,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:23:14,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:23:14,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:23:14,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:23:14,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:23:14,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:23:14,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:23:14,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:23:14,247 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:23:14,256 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:23:14,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:23:14,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:23:14,258 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:23:14,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:23:14,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:23:14,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:23:14,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:23:14,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:23:14,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:23:14,259 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:23:14,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:23:14,259 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:23:14,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:23:14,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:23:14,260 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:23:14,260 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:23:14,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:23:14,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:23:14,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:23:14,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:23:14,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:23:14,261 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:23:14,535 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:23:14,547 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:23:14,551 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:23:14,553 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:23:14,553 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:23:14,554 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_search-1.i [2020-07-07 13:23:14,632 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f435527d/c4fecc1f8d7f4b3e929953dd0a10f39a/FLAGe8b4d7831 [2020-07-07 13:23:15,207 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:23:15,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_search-1.i [2020-07-07 13:23:15,228 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f435527d/c4fecc1f8d7f4b3e929953dd0a10f39a/FLAGe8b4d7831 [2020-07-07 13:23:15,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f435527d/c4fecc1f8d7f4b3e929953dd0a10f39a [2020-07-07 13:23:15,556 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:23:15,558 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:23:15,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:23:15,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:23:15,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:23:15,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:23:15" (1/1) ... [2020-07-07 13:23:15,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@487f54f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:15, skipping insertion in model container [2020-07-07 13:23:15,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:23:15" (1/1) ... [2020-07-07 13:23:15,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:23:15,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:23:16,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:23:16,078 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:23:16,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:23:16,173 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:23:16,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:16 WrapperNode [2020-07-07 13:23:16,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:23:16,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:23:16,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:23:16,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:23:16,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:16" (1/1) ... [2020-07-07 13:23:16,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:16" (1/1) ... [2020-07-07 13:23:16,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:16" (1/1) ... [2020-07-07 13:23:16,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:16" (1/1) ... [2020-07-07 13:23:16,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:16" (1/1) ... [2020-07-07 13:23:16,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:16" (1/1) ... [2020-07-07 13:23:16,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:16" (1/1) ... [2020-07-07 13:23:16,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:23:16,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:23:16,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:23:16,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:23:16,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:16" (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 [2020-07-07 13:23:16,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:23:16,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:23:16,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 13:23:16,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-07 13:23:16,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-07 13:23:16,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-07-07 13:23:16,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-07-07 13:23:16,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-07-07 13:23:16,313 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2020-07-07 13:23:16,313 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2020-07-07 13:23:16,313 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:23:16,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:23:16,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 13:23:16,315 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-07 13:23:16,315 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-07 13:23:16,315 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-07 13:23:16,315 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-07 13:23:16,316 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-07 13:23:16,316 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-07 13:23:16,316 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-07 13:23:16,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-07 13:23:16,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-07 13:23:16,320 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-07 13:23:16,320 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-07 13:23:16,320 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-07 13:23:16,320 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-07 13:23:16,321 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-07 13:23:16,321 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-07 13:23:16,321 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-07 13:23:16,322 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-07 13:23:16,322 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-07 13:23:16,322 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-07-07 13:23:16,323 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-07-07 13:23:16,324 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-07-07 13:23:16,324 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-07 13:23:16,324 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-07 13:23:16,324 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-07 13:23:16,324 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-07 13:23:16,324 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-07 13:23:16,324 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-07 13:23:16,325 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-07 13:23:16,325 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-07 13:23:16,325 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-07 13:23:16,325 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-07 13:23:16,325 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-07 13:23:16,325 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-07 13:23:16,326 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-07 13:23:16,326 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-07 13:23:16,326 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-07 13:23:16,326 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-07 13:23:16,326 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-07 13:23:16,327 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-07 13:23:16,327 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-07 13:23:16,327 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-07 13:23:16,327 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-07 13:23:16,328 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-07 13:23:16,328 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-07 13:23:16,328 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-07 13:23:16,328 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-07 13:23:16,328 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-07 13:23:16,328 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-07 13:23:16,328 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-07 13:23:16,329 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-07 13:23:16,329 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-07 13:23:16,329 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-07 13:23:16,329 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-07 13:23:16,329 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-07 13:23:16,329 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-07 13:23:16,329 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 13:23:16,330 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 13:23:16,330 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-07 13:23:16,330 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 13:23:16,330 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-07 13:23:16,330 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-07 13:23:16,331 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-07 13:23:16,332 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-07 13:23:16,332 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 13:23:16,332 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-07 13:23:16,332 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-07 13:23:16,332 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-07 13:23:16,333 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-07 13:23:16,333 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-07 13:23:16,334 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-07 13:23:16,334 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-07 13:23:16,334 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-07 13:23:16,334 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-07 13:23:16,334 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-07 13:23:16,335 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-07 13:23:16,336 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-07 13:23:16,336 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-07 13:23:16,336 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-07 13:23:16,336 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-07 13:23:16,336 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-07 13:23:16,336 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-07 13:23:16,337 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-07 13:23:16,337 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-07 13:23:16,337 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-07 13:23:16,337 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-07 13:23:16,338 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-07 13:23:16,338 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-07 13:23:16,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-07 13:23:16,338 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-07 13:23:16,338 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-07 13:23:16,339 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-07 13:23:16,339 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-07 13:23:16,339 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-07 13:23:16,339 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-07 13:23:16,339 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-07 13:23:16,339 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-07 13:23:16,339 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-07 13:23:16,340 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-07 13:23:16,340 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-07 13:23:16,340 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-07 13:23:16,340 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-07 13:23:16,340 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-07 13:23:16,340 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-07 13:23:16,340 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-07 13:23:16,341 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-07 13:23:16,341 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-07 13:23:16,341 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-07 13:23:16,341 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2020-07-07 13:23:16,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:23:16,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 13:23:16,342 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2020-07-07 13:23:16,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 13:23:16,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:23:16,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 13:23:16,343 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:23:16,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:23:16,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:23:16,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:23:16,929 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:23:16,929 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-07 13:23:16,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:23:16 BoogieIcfgContainer [2020-07-07 13:23:16,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:23:16,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:23:16,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:23:16,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:23:16,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:23:15" (1/3) ... [2020-07-07 13:23:16,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204bee67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:23:16, skipping insertion in model container [2020-07-07 13:23:16,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:16" (2/3) ... [2020-07-07 13:23:16,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204bee67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:23:16, skipping insertion in model container [2020-07-07 13:23:16,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:23:16" (3/3) ... [2020-07-07 13:23:16,942 INFO L109 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2020-07-07 13:23:16,953 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:23:16,962 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:23:16,976 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:23:16,999 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:23:16,999 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:23:16,999 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:23:16,999 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:23:17,000 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:23:17,000 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:23:17,001 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:23:17,001 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:23:17,016 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-07-07 13:23:17,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-07-07 13:23:17,031 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:17,032 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1] [2020-07-07 13:23:17,033 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:17,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:17,040 INFO L82 PathProgramCache]: Analyzing trace with hash 42223880, now seen corresponding path program 1 times [2020-07-07 13:23:17,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:17,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000737865] [2020-07-07 13:23:17,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:17,675 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 44 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-07-07 13:23:17,676 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:17,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000737865] [2020-07-07 13:23:17,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:17,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 13:23:17,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282550305] [2020-07-07 13:23:17,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 13:23:17,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:17,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 13:23:17,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-07 13:23:17,704 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 9 states. [2020-07-07 13:23:18,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:18,384 INFO L93 Difference]: Finished difference Result 187 states and 225 transitions. [2020-07-07 13:23:18,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-07 13:23:18,386 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-07-07 13:23:18,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:18,398 INFO L225 Difference]: With dead ends: 187 [2020-07-07 13:23:18,398 INFO L226 Difference]: Without dead ends: 92 [2020-07-07 13:23:18,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2020-07-07 13:23:18,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-07-07 13:23:18,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 73. [2020-07-07 13:23:18,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-07-07 13:23:18,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2020-07-07 13:23:18,478 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 82 [2020-07-07 13:23:18,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:18,479 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2020-07-07 13:23:18,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 13:23:18,479 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2020-07-07 13:23:18,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-07-07 13:23:18,484 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:18,484 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:23:18,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:23:18,485 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:18,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:18,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1050718625, now seen corresponding path program 1 times [2020-07-07 13:23:18,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:18,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394130040] [2020-07-07 13:23:18,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:18,757 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-07 13:23:18,757 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:18,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394130040] [2020-07-07 13:23:18,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:18,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 13:23:18,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806879217] [2020-07-07 13:23:18,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 13:23:18,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:18,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 13:23:18,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-07-07 13:23:18,760 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 10 states. [2020-07-07 13:23:19,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:19,371 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2020-07-07 13:23:19,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 13:23:19,372 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-07-07 13:23:19,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:19,381 INFO L225 Difference]: With dead ends: 113 [2020-07-07 13:23:19,381 INFO L226 Difference]: Without dead ends: 90 [2020-07-07 13:23:19,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2020-07-07 13:23:19,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-07-07 13:23:19,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2020-07-07 13:23:19,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-07 13:23:19,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-07-07 13:23:19,430 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 89 [2020-07-07 13:23:19,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:19,431 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-07-07 13:23:19,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 13:23:19,432 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-07-07 13:23:19,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-07-07 13:23:19,436 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:19,438 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:23:19,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:23:19,438 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:19,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:19,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1346991358, now seen corresponding path program 1 times [2020-07-07 13:23:19,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:19,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797419776] [2020-07-07 13:23:19,439 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:20,001 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-07 13:23:20,001 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:20,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797419776] [2020-07-07 13:23:20,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:20,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 13:23:20,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082921088] [2020-07-07 13:23:20,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 13:23:20,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:20,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 13:23:20,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-07-07 13:23:20,004 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 14 states. [2020-07-07 13:23:21,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:21,269 INFO L93 Difference]: Finished difference Result 100 states and 105 transitions. [2020-07-07 13:23:21,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-07 13:23:21,274 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 91 [2020-07-07 13:23:21,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:21,276 INFO L225 Difference]: With dead ends: 100 [2020-07-07 13:23:21,276 INFO L226 Difference]: Without dead ends: 87 [2020-07-07 13:23:21,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=177, Invalid=693, Unknown=0, NotChecked=0, Total=870 [2020-07-07 13:23:21,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-07-07 13:23:21,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 78. [2020-07-07 13:23:21,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-07-07 13:23:21,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-07-07 13:23:21,295 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 91 [2020-07-07 13:23:21,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:21,296 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-07-07 13:23:21,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 13:23:21,296 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-07-07 13:23:21,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-07-07 13:23:21,298 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:21,298 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-07-07 13:23:21,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:23:21,298 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:21,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:21,299 INFO L82 PathProgramCache]: Analyzing trace with hash 2140447576, now seen corresponding path program 1 times [2020-07-07 13:23:21,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:21,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736115091] [2020-07-07 13:23:21,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:21,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:23:21,315 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:442) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:277) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) 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) [2020-07-07 13:23:21,321 INFO L168 Benchmark]: Toolchain (without parser) took 5762.64 ms. Allocated memory was 135.8 MB in the beginning and 300.9 MB in the end (delta: 165.2 MB). Free memory was 99.2 MB in the beginning and 151.5 MB in the end (delta: -52.3 MB). Peak memory consumption was 112.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:23:21,322 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 135.8 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-07 13:23:21,323 INFO L168 Benchmark]: CACSL2BoogieTranslator took 615.44 ms. Allocated memory was 135.8 MB in the beginning and 200.3 MB in the end (delta: 64.5 MB). Free memory was 99.0 MB in the beginning and 164.1 MB in the end (delta: -65.1 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:23:21,324 INFO L168 Benchmark]: Boogie Preprocessor took 69.36 ms. Allocated memory is still 200.3 MB. Free memory was 163.4 MB in the beginning and 160.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:23:21,328 INFO L168 Benchmark]: RCFGBuilder took 689.51 ms. Allocated memory is still 200.3 MB. Free memory was 160.6 MB in the beginning and 112.6 MB in the end (delta: 47.9 MB). Peak memory consumption was 47.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:23:21,329 INFO L168 Benchmark]: TraceAbstraction took 4383.84 ms. Allocated memory was 200.3 MB in the beginning and 300.9 MB in the end (delta: 100.7 MB). Free memory was 112.0 MB in the beginning and 151.5 MB in the end (delta: -39.5 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. [2020-07-07 13:23:21,336 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 135.8 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 615.44 ms. Allocated memory was 135.8 MB in the beginning and 200.3 MB in the end (delta: 64.5 MB). Free memory was 99.0 MB in the beginning and 164.1 MB in the end (delta: -65.1 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.36 ms. Allocated memory is still 200.3 MB. Free memory was 163.4 MB in the beginning and 160.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 689.51 ms. Allocated memory is still 200.3 MB. Free memory was 160.6 MB in the beginning and 112.6 MB in the end (delta: 47.9 MB). Peak memory consumption was 47.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4383.84 ms. Allocated memory was 200.3 MB in the beginning and 300.9 MB in the end (delta: 100.7 MB). Free memory was 112.0 MB in the beginning and 151.5 MB in the end (delta: -39.5 MB). Peak memory consumption was 61.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...