/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/ldv-sets/test_add-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:01:13,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:01:13,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:01:13,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 02:01:13,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 02:01:13,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 02:01:13,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 02:01:13,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 02:01:13,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 02:01:13,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 02:01:13,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 02:01:13,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 02:01:13,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:01:13,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:01:13,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:01:13,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:01:13,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:01:13,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:01:13,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:01:13,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:01:13,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:01:13,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:01:13,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:01:13,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:01:13,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 02:01:13,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 02:01:13,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 02:01:13,644 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 02:01:13,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 02:01:13,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 02:01:13,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 02:01:13,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 02:01:13,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 02:01:13,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 02:01:13,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 02:01:13,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 02:01:13,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 02:01:13,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 02:01:13,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:01:13,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:01:13,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:01:13,657 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:01:13,680 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:01:13,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:01:13,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:01:13,687 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:01:13,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:01:13,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:01:13,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:01:13,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:01:13,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:01:13,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:01:13,689 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:01:13,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:01:13,690 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:01:13,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:01:13,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:01:13,691 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:01:13,691 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:01:13,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:01:13,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:01:13,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:01:13,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:01:13,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:01:13,693 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:01:13,693 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:01:14,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:01:14,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:01:14,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:01:14,135 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:01:14,135 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:01:14,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_add-1.i [2021-02-22 02:01:14,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2f56ee50/74bfd688c0ad4237b8f4385d0d7783c5/FLAG014ba143a [2021-02-22 02:01:15,024 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:01:15,025 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_add-1.i [2021-02-22 02:01:15,048 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2f56ee50/74bfd688c0ad4237b8f4385d0d7783c5/FLAG014ba143a [2021-02-22 02:01:15,278 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2f56ee50/74bfd688c0ad4237b8f4385d0d7783c5 [2021-02-22 02:01:15,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:01:15,296 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:01:15,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:01:15,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:01:15,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:01:15,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:01:15" (1/1) ... [2021-02-22 02:01:15,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18d4dcc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:15, skipping insertion in model container [2021-02-22 02:01:15,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:01:15" (1/1) ... [2021-02-22 02:01:15,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:01:15,395 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:01:15,771 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_add-1.i[25792,25805] [2021-02-22 02:01:15,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:01:15,787 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:01:15,874 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_add-1.i[25792,25805] [2021-02-22 02:01:15,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:01:15,992 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:01:15,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:15 WrapperNode [2021-02-22 02:01:15,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:01:15,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:01:15,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:01:15,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:01:16,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:15" (1/1) ... [2021-02-22 02:01:16,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:15" (1/1) ... [2021-02-22 02:01:16,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:15" (1/1) ... [2021-02-22 02:01:16,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:15" (1/1) ... [2021-02-22 02:01:16,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:15" (1/1) ... [2021-02-22 02:01:16,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:15" (1/1) ... [2021-02-22 02:01:16,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:15" (1/1) ... [2021-02-22 02:01:16,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:01:16,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:01:16,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:01:16,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:01:16,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:15" (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 [2021-02-22 02:01:16,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:01:16,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:01:16,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-22 02:01:16,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-22 02:01:16,218 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:01:16,218 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-22 02:01:16,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-02-22 02:01:16,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2021-02-22 02:01:16,219 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-02-22 02:01:16,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-02-22 02:01:16,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-02-22 02:01:16,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-02-22 02:01:16,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-02-22 02:01:16,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-02-22 02:01:16,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2021-02-22 02:01:16,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2021-02-22 02:01:16,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2021-02-22 02:01:16,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2021-02-22 02:01:16,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2021-02-22 02:01:16,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2021-02-22 02:01:16,221 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-02-22 02:01:16,221 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:01:16,222 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-22 02:01:16,222 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-22 02:01:16,222 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-22 02:01:16,222 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-22 02:01:16,223 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-22 02:01:16,223 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-22 02:01:16,223 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-22 02:01:16,223 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-22 02:01:16,223 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-22 02:01:16,224 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-22 02:01:16,224 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-22 02:01:16,224 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-22 02:01:16,224 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-22 02:01:16,224 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-22 02:01:16,225 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-22 02:01:16,225 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-22 02:01:16,225 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-22 02:01:16,225 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-22 02:01:16,225 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-22 02:01:16,225 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-22 02:01:16,226 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-22 02:01:16,226 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-22 02:01:16,226 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-22 02:01:16,226 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-22 02:01:16,226 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-22 02:01:16,226 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-22 02:01:16,227 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-22 02:01:16,227 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-22 02:01:16,227 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-22 02:01:16,227 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-22 02:01:16,227 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-22 02:01:16,227 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-22 02:01:16,228 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-22 02:01:16,228 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-22 02:01:16,228 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-22 02:01:16,228 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-22 02:01:16,228 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-22 02:01:16,229 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-22 02:01:16,229 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-22 02:01:16,229 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-22 02:01:16,229 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-22 02:01:16,229 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-22 02:01:16,229 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-22 02:01:16,230 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-22 02:01:16,230 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-22 02:01:16,230 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-22 02:01:16,230 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-22 02:01:16,230 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-22 02:01:16,230 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-22 02:01:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-22 02:01:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-22 02:01:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-22 02:01:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 02:01:16,231 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-22 02:01:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-22 02:01:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 02:01:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-22 02:01:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-22 02:01:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-22 02:01:16,233 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-22 02:01:16,233 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:01:16,233 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-22 02:01:16,233 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-22 02:01:16,233 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-22 02:01:16,233 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-22 02:01:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-22 02:01:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-22 02:01:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-22 02:01:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-22 02:01:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-22 02:01:16,234 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-22 02:01:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-22 02:01:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-22 02:01:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-22 02:01:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-22 02:01:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-22 02:01:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-22 02:01:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-22 02:01:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-22 02:01:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-22 02:01:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-22 02:01:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-22 02:01:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-22 02:01:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-22 02:01:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-22 02:01:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-22 02:01:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-22 02:01:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-22 02:01:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-22 02:01:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-22 02:01:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-22 02:01:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-22 02:01:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-22 02:01:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-22 02:01:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-22 02:01:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-22 02:01:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-22 02:01:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-22 02:01:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-22 02:01:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-22 02:01:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-22 02:01:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-22 02:01:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:01:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-22 02:01:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-22 02:01:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:01:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:01:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-22 02:01:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:01:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-02-22 02:01:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 02:01:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2021-02-22 02:01:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-02-22 02:01:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 02:01:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-02-22 02:01:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-02-22 02:01:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-02-22 02:01:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 02:01:16,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-02-22 02:01:16,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-02-22 02:01:16,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2021-02-22 02:01:16,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2021-02-22 02:01:16,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2021-02-22 02:01:16,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2021-02-22 02:01:16,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2021-02-22 02:01:16,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2021-02-22 02:01:16,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:01:16,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:01:16,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:01:16,243 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-02-22 02:01:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:01:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:01:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:01:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-02-22 02:01:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:01:17,106 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:01:17,106 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-22 02:01:17,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:01:17 BoogieIcfgContainer [2021-02-22 02:01:17,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:01:17,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:01:17,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:01:17,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:01:17,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:01:15" (1/3) ... [2021-02-22 02:01:17,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af4f161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:01:17, skipping insertion in model container [2021-02-22 02:01:17,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:01:15" (2/3) ... [2021-02-22 02:01:17,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af4f161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:01:17, skipping insertion in model container [2021-02-22 02:01:17,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:01:17" (3/3) ... [2021-02-22 02:01:17,123 INFO L111 eAbstractionObserver]: Analyzing ICFG test_add-1.i [2021-02-22 02:01:17,131 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:01:17,139 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:01:17,160 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:01:17,203 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:01:17,204 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:01:17,204 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:01:17,204 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:01:17,204 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:01:17,204 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:01:17,205 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:01:17,205 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:01:17,232 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states. [2021-02-22 02:01:17,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-02-22 02:01:17,246 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:01:17,248 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:01:17,248 INFO L428 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:01:17,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:01:17,258 INFO L82 PathProgramCache]: Analyzing trace with hash 61055343, now seen corresponding path program 1 times [2021-02-22 02:01:17,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:01:17,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79693650] [2021-02-22 02:01:17,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:01:17,375 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:01:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:17,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:17,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:17,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:17,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:17,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:01:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:17,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:17,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:17,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-22 02:01:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:17,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:17,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:17,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:17,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:17,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 02:01:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:17,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:17,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:17,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:17,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:17,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-22 02:01:17,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:17,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:17,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:17,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:17,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:17,867 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-22 02:01:17,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79693650] [2021-02-22 02:01:17,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:01:17,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 02:01:17,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077649045] [2021-02-22 02:01:17,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 02:01:17,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:01:17,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 02:01:17,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:01:17,894 INFO L87 Difference]: Start difference. First operand 100 states. Second operand 4 states. [2021-02-22 02:01:18,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:01:18,205 INFO L93 Difference]: Finished difference Result 185 states and 203 transitions. [2021-02-22 02:01:18,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 02:01:18,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2021-02-22 02:01:18,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:01:18,216 INFO L225 Difference]: With dead ends: 185 [2021-02-22 02:01:18,216 INFO L226 Difference]: Without dead ends: 95 [2021-02-22 02:01:18,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-22 02:01:18,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-02-22 02:01:18,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 87. [2021-02-22 02:01:18,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2021-02-22 02:01:18,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2021-02-22 02:01:18,304 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 54 [2021-02-22 02:01:18,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:01:18,304 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2021-02-22 02:01:18,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 02:01:18,305 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2021-02-22 02:01:18,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-02-22 02:01:18,308 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:01:18,309 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:01:18,309 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:01:18,309 INFO L428 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:01:18,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:01:18,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1450871183, now seen corresponding path program 1 times [2021-02-22 02:01:18,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:01:18,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712193922] [2021-02-22 02:01:18,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:01:18,317 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:01:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:18,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:18,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:18,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:18,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:18,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:01:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:18,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:18,413 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:18,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-22 02:01:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:18,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:18,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:18,462 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-22 02:01:18,463 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-22 02:01:18,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:18,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:18,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 02:01:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:18,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:18,488 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:18,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:18,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:01:18,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-22 02:01:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:18,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:18,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:18,540 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-02-22 02:01:18,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712193922] [2021-02-22 02:01:18,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:01:18,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 02:01:18,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311885591] [2021-02-22 02:01:18,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 02:01:18,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:01:18,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 02:01:18,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-22 02:01:18,547 INFO L87 Difference]: Start difference. First operand 87 states and 90 transitions. Second operand 6 states. [2021-02-22 02:01:19,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:01:19,078 INFO L93 Difference]: Finished difference Result 128 states and 135 transitions. [2021-02-22 02:01:19,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-22 02:01:19,079 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2021-02-22 02:01:19,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:01:19,083 INFO L225 Difference]: With dead ends: 128 [2021-02-22 02:01:19,083 INFO L226 Difference]: Without dead ends: 99 [2021-02-22 02:01:19,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-02-22 02:01:19,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-02-22 02:01:19,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 91. [2021-02-22 02:01:19,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2021-02-22 02:01:19,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2021-02-22 02:01:19,108 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 54 [2021-02-22 02:01:19,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:01:19,109 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2021-02-22 02:01:19,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 02:01:19,109 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2021-02-22 02:01:19,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-22 02:01:19,111 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:01:19,111 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:01:19,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:01:19,112 INFO L428 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:01:19,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:01:19,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1712920373, now seen corresponding path program 1 times [2021-02-22 02:01:19,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:01:19,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825042117] [2021-02-22 02:01:19,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:01:19,118 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:01:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:19,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:19,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:19,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:19,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:01:19,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:19,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:19,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:01:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:19,235 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:19,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:19,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-22 02:01:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:19,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:19,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:19,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 02:01:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:19,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:19,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:19,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-22 02:01:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:19,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:19,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:19,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:19,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:01:19,304 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-02-22 02:01:19,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825042117] [2021-02-22 02:01:19,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:01:19,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 02:01:19,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18751624] [2021-02-22 02:01:19,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 02:01:19,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:01:19,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 02:01:19,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-22 02:01:19,307 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 6 states. [2021-02-22 02:01:19,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:01:19,750 INFO L93 Difference]: Finished difference Result 106 states and 110 transitions. [2021-02-22 02:01:19,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-22 02:01:19,751 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2021-02-22 02:01:19,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:01:19,753 INFO L225 Difference]: With dead ends: 106 [2021-02-22 02:01:19,753 INFO L226 Difference]: Without dead ends: 99 [2021-02-22 02:01:19,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-02-22 02:01:19,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-02-22 02:01:19,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 91. [2021-02-22 02:01:19,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2021-02-22 02:01:19,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 94 transitions. [2021-02-22 02:01:19,775 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 94 transitions. Word has length 57 [2021-02-22 02:01:19,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:01:19,775 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 94 transitions. [2021-02-22 02:01:19,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 02:01:19,776 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 94 transitions. [2021-02-22 02:01:19,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-02-22 02:01:19,777 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:01:19,777 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:01:19,778 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 02:01:19,778 INFO L428 AbstractCegarLoop]: === Iteration 4 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:01:19,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:01:19,779 INFO L82 PathProgramCache]: Analyzing trace with hash -2043146959, now seen corresponding path program 1 times [2021-02-22 02:01:19,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:01:19,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714083602] [2021-02-22 02:01:19,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:01:19,784 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:01:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:19,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:19,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-22 02:01:19,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:19,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-22 02:01:19,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:19,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-22 02:01:19,862 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:19,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:19,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:01:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:19,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:19,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:19,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:19,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:01:19,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:19,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-22 02:01:19,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-22 02:01:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:19,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:19,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:01:20,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:20,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 02:01:20,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:20,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-22 02:01:20,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 02:01:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:20,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:20,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:20,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:20,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:01:20,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:20,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-22 02:01:20,111 WARN L141 QuantifierPusher]: treesize reduction 11, result has 69.4 percent of original size [2021-02-22 02:01:20,112 WARN L147 QuantifierPusher]: treesize reduction 11, result has 69.4 percent of original size 25 [2021-02-22 02:01:20,140 WARN L141 QuantifierPusher]: treesize reduction 7, result has 82.9 percent of original size [2021-02-22 02:01:20,142 WARN L147 QuantifierPusher]: treesize reduction 7, result has 82.9 percent of original size 34 [2021-02-22 02:01:20,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:20,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:01:20,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:20,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-22 02:01:20,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-22 02:01:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:01:20,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:01:20,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:01:20,267 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-22 02:01:20,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714083602] [2021-02-22 02:01:20,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:01:20,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-22 02:01:20,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016868151] [2021-02-22 02:01:20,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-22 02:01:20,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:01:20,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-22 02:01:20,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-02-22 02:01:20,270 INFO L87 Difference]: Start difference. First operand 91 states and 94 transitions. Second operand 15 states. [2021-02-22 02:01:21,299 WARN L202 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2021-02-22 02:01:22,717 WARN L202 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2021-02-22 02:01:22,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:01:22,999 INFO L93 Difference]: Finished difference Result 184 states and 192 transitions. [2021-02-22 02:01:23,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-02-22 02:01:23,001 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 60 [2021-02-22 02:01:23,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:01:23,003 INFO L225 Difference]: With dead ends: 184 [2021-02-22 02:01:23,003 INFO L226 Difference]: Without dead ends: 108 [2021-02-22 02:01:23,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=376, Invalid=1184, Unknown=0, NotChecked=0, Total=1560 [2021-02-22 02:01:23,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-02-22 02:01:23,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 96. [2021-02-22 02:01:23,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2021-02-22 02:01:23,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2021-02-22 02:01:23,033 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 60 [2021-02-22 02:01:23,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:01:23,034 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2021-02-22 02:01:23,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-22 02:01:23,034 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2021-02-22 02:01:23,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-02-22 02:01:23,035 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:01:23,036 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:01:23,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 02:01:23,036 INFO L428 AbstractCegarLoop]: === Iteration 5 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:01:23,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:01:23,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1993613588, now seen corresponding path program 1 times [2021-02-22 02:01:23,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:01:23,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621358343] [2021-02-22 02:01:23,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:01:23,043 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:01:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:01:23,083 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:01:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:01:23,115 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:01:23,165 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 02:01:23,165 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 02:01:23,166 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 02:01:23,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:01:23 BoogieIcfgContainer [2021-02-22 02:01:23,186 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:01:23,188 INFO L168 Benchmark]: Toolchain (without parser) took 7903.47 ms. Allocated memory was 151.0 MB in the beginning and 229.6 MB in the end (delta: 78.6 MB). Free memory was 126.3 MB in the beginning and 103.1 MB in the end (delta: 23.2 MB). Peak memory consumption was 102.8 MB. Max. memory is 8.0 GB. [2021-02-22 02:01:23,188 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:01:23,189 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.42 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 130.8 MB in the end (delta: -5.6 MB). Peak memory consumption was 28.9 MB. Max. memory is 8.0 GB. [2021-02-22 02:01:23,190 INFO L168 Benchmark]: Boogie Preprocessor took 111.81 ms. Allocated memory is still 151.0 MB. Free memory was 130.8 MB in the beginning and 127.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:01:23,191 INFO L168 Benchmark]: RCFGBuilder took 1003.47 ms. Allocated memory is still 151.0 MB. Free memory was 127.7 MB in the beginning and 126.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 60.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:01:23,191 INFO L168 Benchmark]: TraceAbstraction took 6072.08 ms. Allocated memory was 151.0 MB in the beginning and 229.6 MB in the end (delta: 78.6 MB). Free memory was 125.8 MB in the beginning and 103.1 MB in the end (delta: 22.7 MB). Peak memory consumption was 100.8 MB. Max. memory is 8.0 GB. [2021-02-22 02:01:23,194 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 691.42 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 130.8 MB in the end (delta: -5.6 MB). Peak memory consumption was 28.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 111.81 ms. Allocated memory is still 151.0 MB. Free memory was 130.8 MB in the beginning and 127.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1003.47 ms. Allocated memory is still 151.0 MB. Free memory was 127.7 MB in the beginning and 126.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 60.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6072.08 ms. Allocated memory was 151.0 MB in the beginning and 229.6 MB in the end (delta: 78.6 MB). Free memory was 125.8 MB in the beginning and 103.1 MB in the end (delta: 22.7 MB). Peak memory consumption was 100.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 667]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L662] struct ldv_list_head s1 = { &(s1), &(s1) }; [L671] CALL foo() [L665] int j = __VERIFIER_nondet_int(); [L666] CALL ldv_set_add(j, &s1) [L633] CALL, EXPR ldv_is_in_set(new, s) [L651] struct ldv_list_element *m; [L652] EXPR (s)->next [L652] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L652] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) [L652] COND FALSE !(&m->list != (s)) [L657] return 0; [L633] RET, EXPR ldv_is_in_set(new, s) [L633] COND TRUE !ldv_is_in_set(new, s) [L634] struct ldv_list_element *le; [L635] CALL, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) [L576] void *ptr = malloc(size); [L577] CALL assume_abort_if_not(ptr!=0) [L565] COND FALSE !(!cond) [L577] RET assume_abort_if_not(ptr!=0) [L578] return ptr; [L635] RET, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) [L635] le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) [L636] le->e = new [L637] CALL ldv_list_add(&le->list, s) [L605] EXPR head->next [L605] CALL __ldv_list_add(new, head, head->next) [L593] next->prev = new [L594] new->next = next [L595] new->prev = prev [L596] prev->next = new [L605] RET __ldv_list_add(new, head, head->next) [L637] RET ldv_list_add(&le->list, s) [L666] RET ldv_set_add(j, &s1) [L667] CALL ldv_is_in_set(j, &s1) [L651] struct ldv_list_element *m; [L652] EXPR (s)->next [L652] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L652] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) [L652] COND TRUE &m->list != (s) [L653] EXPR m->e [L653] COND TRUE m->e == e [L654] return 1; [L667] RET ldv_is_in_set(j, &s1) [L667] COND TRUE ldv_is_in_set(j, &s1) [L667] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 22 procedures, 191 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.9s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 331 SDtfs, 904 SDslu, 243 SDs, 0 SdLazy, 1055 SolverSat, 162 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 36 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...