/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/splice-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:25:08,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:25:08,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:25:08,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:25:08,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:25:08,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:25:08,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:25:08,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:25:08,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:25:08,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:25:08,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:25:08,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:25:08,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:25:08,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:25:08,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:25:08,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:25:08,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:25:08,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:25:08,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:25:08,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:25:08,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:25:08,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:25:08,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:25:08,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:25:08,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 18:25:08,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 18:25:08,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 18:25:08,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 18:25:08,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 18:25:08,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 18:25:08,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 18:25:08,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 18:25:08,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 18:25:08,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 18:25:08,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 18:25:08,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 18:25:08,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 18:25:08,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 18:25:08,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:25:08,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:25:08,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:25:08,140 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 18:25:08,176 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:25:08,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:25:08,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:25:08,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:25:08,179 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:25:08,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:25:08,181 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:25:08,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:25:08,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:25:08,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:25:08,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:25:08,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:25:08,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:25:08,183 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:25:08,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:25:08,184 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:25:08,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:25:08,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:25:08,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:25:08,185 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:25:08,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:25:08,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:25:08,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:25:08,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:25:08,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:25:08,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:25:08,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:25:08,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:25:08,188 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:25:08,188 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:25:08,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:25:08,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:25:08,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:25:08,656 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:25:08,657 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:25:08,658 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/splice-1.i [2020-10-23 18:25:08,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e8722135/233505bfc01c4ab2868667f1d87e74d7/FLAG836df27f4 [2020-10-23 18:25:09,381 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:25:09,382 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/splice-1.i [2020-10-23 18:25:09,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e8722135/233505bfc01c4ab2868667f1d87e74d7/FLAG836df27f4 [2020-10-23 18:25:09,668 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e8722135/233505bfc01c4ab2868667f1d87e74d7 [2020-10-23 18:25:09,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:25:09,679 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:25:09,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:25:09,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:25:09,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:25:09,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:25:09" (1/1) ... [2020-10-23 18:25:09,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ae78933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:09, skipping insertion in model container [2020-10-23 18:25:09,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:25:09" (1/1) ... [2020-10-23 18:25:09,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:25:09,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:25:10,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:25:10,090 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:25:10,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:25:10,212 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:25:10,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:10 WrapperNode [2020-10-23 18:25:10,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:25:10,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:25:10,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:25:10,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:25:10,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:10" (1/1) ... [2020-10-23 18:25:10,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:10" (1/1) ... [2020-10-23 18:25:10,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:10" (1/1) ... [2020-10-23 18:25:10,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:10" (1/1) ... [2020-10-23 18:25:10,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:10" (1/1) ... [2020-10-23 18:25:10,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:10" (1/1) ... [2020-10-23 18:25:10,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:10" (1/1) ... [2020-10-23 18:25:10,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:25:10,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:25:10,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:25:10,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:25:10,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:10" (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 [2020-10-23 18:25:10,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:25:10,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:25:10,391 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:25:10,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-23 18:25:10,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-23 18:25:10,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-23 18:25:10,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-23 18:25:10,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-23 18:25:10,392 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-23 18:25:10,392 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:25:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:25:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:25:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 18:25:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 18:25:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:25:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:25:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:25:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-23 18:25:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-23 18:25:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-23 18:25:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-23 18:25:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-23 18:25:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-23 18:25:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-23 18:25:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-23 18:25:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-23 18:25:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-23 18:25:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-23 18:25:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-23 18:25:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-23 18:25:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-23 18:25:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-23 18:25:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-23 18:25:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-23 18:25:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-23 18:25:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-23 18:25:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-23 18:25:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-23 18:25:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-23 18:25:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-23 18:25:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-23 18:25:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-23 18:25:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-23 18:25:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-23 18:25:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-23 18:25:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-23 18:25:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-23 18:25:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-23 18:25:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-23 18:25:10,398 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-23 18:25:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-23 18:25:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-23 18:25:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-23 18:25:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-23 18:25:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-23 18:25:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-23 18:25:10,399 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-23 18:25:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-23 18:25:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-23 18:25:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-23 18:25:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-23 18:25:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-23 18:25:10,400 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-23 18:25:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-23 18:25:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-23 18:25:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-23 18:25:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-23 18:25:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-23 18:25:10,401 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-23 18:25:10,402 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-23 18:25:10,402 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-23 18:25:10,402 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-23 18:25:10,402 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 18:25:10,402 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-23 18:25:10,402 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-23 18:25:10,402 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 18:25:10,402 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-23 18:25:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-23 18:25:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-23 18:25:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-23 18:25:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-23 18:25:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-23 18:25:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-23 18:25:10,403 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-23 18:25:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-23 18:25:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-23 18:25:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-23 18:25:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-23 18:25:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-23 18:25:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-23 18:25:10,404 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-23 18:25:10,405 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-23 18:25:10,405 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-23 18:25:10,405 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-23 18:25:10,405 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-23 18:25:10,405 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-23 18:25:10,405 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-23 18:25:10,405 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-23 18:25:10,406 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-23 18:25:10,406 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-23 18:25:10,406 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-23 18:25:10,406 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-23 18:25:10,406 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-23 18:25:10,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-23 18:25:10,406 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-23 18:25:10,407 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-23 18:25:10,407 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-23 18:25:10,407 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-23 18:25:10,407 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-23 18:25:10,407 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-23 18:25:10,407 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-23 18:25:10,407 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-23 18:25:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-23 18:25:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-23 18:25:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-23 18:25:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-23 18:25:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-23 18:25:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-23 18:25:10,408 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-23 18:25:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-23 18:25:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-23 18:25:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-23 18:25:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-23 18:25:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-23 18:25:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:25:10,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 18:25:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:25:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 18:25:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 18:25:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:25:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:25:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:25:10,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:25:10,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:25:10,793 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-23 18:25:10,972 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:25:10,972 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-23 18:25:10,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:25:10 BoogieIcfgContainer [2020-10-23 18:25:10,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:25:10,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:25:10,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:25:10,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:25:10,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:25:09" (1/3) ... [2020-10-23 18:25:10,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426561dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:25:10, skipping insertion in model container [2020-10-23 18:25:10,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:25:10" (2/3) ... [2020-10-23 18:25:10,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426561dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:25:10, skipping insertion in model container [2020-10-23 18:25:10,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:25:10" (3/3) ... [2020-10-23 18:25:10,998 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-1.i [2020-10-23 18:25:11,011 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:25:11,016 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:25:11,029 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:25:11,058 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:25:11,058 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:25:11,058 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:25:11,058 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:25:11,058 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:25:11,059 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:25:11,059 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:25:11,059 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:25:11,077 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-23 18:25:11,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-23 18:25:11,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:25:11,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:25:11,086 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:25:11,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:25:11,093 INFO L82 PathProgramCache]: Analyzing trace with hash 455186036, now seen corresponding path program 1 times [2020-10-23 18:25:11,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:25:11,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189946654] [2020-10-23 18:25:11,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:25:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:25:11,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:25:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:25:11,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:25:11,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189946654] [2020-10-23 18:25:11,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:25:11,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:25:11,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820235494] [2020-10-23 18:25:11,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:25:11,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:25:11,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:25:11,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:25:11,410 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-10-23 18:25:11,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:25:11,544 INFO L93 Difference]: Finished difference Result 61 states and 87 transitions. [2020-10-23 18:25:11,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:25:11,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-23 18:25:11,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:25:11,555 INFO L225 Difference]: With dead ends: 61 [2020-10-23 18:25:11,555 INFO L226 Difference]: Without dead ends: 29 [2020-10-23 18:25:11,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:25:11,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-23 18:25:11,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-23 18:25:11,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-23 18:25:11,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2020-10-23 18:25:11,603 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 18 [2020-10-23 18:25:11,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:25:11,604 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-10-23 18:25:11,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:25:11,604 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2020-10-23 18:25:11,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-23 18:25:11,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:25:11,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:25:11,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:25:11,606 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:25:11,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:25:11,608 INFO L82 PathProgramCache]: Analyzing trace with hash 929438058, now seen corresponding path program 1 times [2020-10-23 18:25:11,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:25:11,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480266956] [2020-10-23 18:25:11,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:25:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:25:11,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:25:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:25:11,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:25:11,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480266956] [2020-10-23 18:25:11,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:25:11,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 18:25:11,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365411833] [2020-10-23 18:25:11,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:25:11,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:25:11,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:25:11,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:25:11,792 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 5 states. [2020-10-23 18:25:11,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:25:11,929 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2020-10-23 18:25:11,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:25:11,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-23 18:25:11,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:25:11,933 INFO L225 Difference]: With dead ends: 47 [2020-10-23 18:25:11,933 INFO L226 Difference]: Without dead ends: 38 [2020-10-23 18:25:11,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:25:11,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-23 18:25:11,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-10-23 18:25:11,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-23 18:25:11,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2020-10-23 18:25:11,945 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 20 [2020-10-23 18:25:11,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:25:11,945 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2020-10-23 18:25:11,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:25:11,945 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2020-10-23 18:25:11,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-23 18:25:11,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:25:11,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:25:11,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:25:11,947 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:25:11,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:25:11,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1785249473, now seen corresponding path program 1 times [2020-10-23 18:25:11,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:25:11,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172397566] [2020-10-23 18:25:11,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:25:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:25:12,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:25:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:25:12,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:25:12,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172397566] [2020-10-23 18:25:12,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:25:12,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 18:25:12,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519665922] [2020-10-23 18:25:12,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:25:12,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:25:12,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:25:12,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:25:12,059 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand 5 states. [2020-10-23 18:25:12,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:25:12,174 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2020-10-23 18:25:12,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:25:12,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-23 18:25:12,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:25:12,177 INFO L225 Difference]: With dead ends: 54 [2020-10-23 18:25:12,177 INFO L226 Difference]: Without dead ends: 44 [2020-10-23 18:25:12,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:25:12,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-23 18:25:12,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-23 18:25:12,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-23 18:25:12,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2020-10-23 18:25:12,188 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 22 [2020-10-23 18:25:12,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:25:12,188 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2020-10-23 18:25:12,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:25:12,188 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2020-10-23 18:25:12,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-23 18:25:12,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:25:12,190 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:25:12,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 18:25:12,190 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:25:12,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:25:12,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1469752795, now seen corresponding path program 1 times [2020-10-23 18:25:12,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:25:12,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208299246] [2020-10-23 18:25:12,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:25:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:25:12,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:25:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:25:12,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:25:12,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208299246] [2020-10-23 18:25:12,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:25:12,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 18:25:12,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327381704] [2020-10-23 18:25:12,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 18:25:12,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:25:12,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 18:25:12,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-23 18:25:12,306 INFO L87 Difference]: Start difference. First operand 43 states and 55 transitions. Second operand 7 states. [2020-10-23 18:25:12,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:25:12,477 INFO L93 Difference]: Finished difference Result 78 states and 102 transitions. [2020-10-23 18:25:12,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 18:25:12,477 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-23 18:25:12,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:25:12,479 INFO L225 Difference]: With dead ends: 78 [2020-10-23 18:25:12,479 INFO L226 Difference]: Without dead ends: 49 [2020-10-23 18:25:12,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-23 18:25:12,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-23 18:25:12,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-10-23 18:25:12,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-23 18:25:12,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2020-10-23 18:25:12,488 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 23 [2020-10-23 18:25:12,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:25:12,489 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2020-10-23 18:25:12,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 18:25:12,489 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2020-10-23 18:25:12,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-23 18:25:12,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:25:12,490 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-23 18:25:12,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 18:25:12,490 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:25:12,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:25:12,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1289219814, now seen corresponding path program 1 times [2020-10-23 18:25:12,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:25:12,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471725560] [2020-10-23 18:25:12,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:25:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:25:12,529 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:25:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:25:12,567 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:25:12,606 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 18:25:12,607 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 18:25:12,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 18:25:12,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:25:12 BoogieIcfgContainer [2020-10-23 18:25:12,650 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:25:12,653 INFO L168 Benchmark]: Toolchain (without parser) took 2977.95 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 124.2 MB in the beginning and 77.7 MB in the end (delta: 46.6 MB). Peak memory consumption was 78.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:25:12,654 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:25:12,655 INFO L168 Benchmark]: CACSL2BoogieTranslator took 532.13 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 101.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:25:12,656 INFO L168 Benchmark]: Boogie Preprocessor took 89.79 ms. Allocated memory is still 151.0 MB. Free memory was 101.6 MB in the beginning and 98.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:25:12,656 INFO L168 Benchmark]: RCFGBuilder took 674.10 ms. Allocated memory is still 151.0 MB. Free memory was 98.9 MB in the beginning and 90.9 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.6 MB. Max. memory is 8.0 GB. [2020-10-23 18:25:12,657 INFO L168 Benchmark]: TraceAbstraction took 1669.82 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 90.4 MB in the beginning and 77.7 MB in the end (delta: 12.7 MB). Peak memory consumption was 43.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:25:12,661 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 532.13 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 101.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 89.79 ms. Allocated memory is still 151.0 MB. Free memory was 101.6 MB in the beginning and 98.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 674.10 ms. Allocated memory is still 151.0 MB. Free memory was 98.9 MB in the beginning and 90.9 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1669.82 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 90.4 MB in the beginning and 77.7 MB in the end (delta: 12.7 MB). Peak memory consumption was 43.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L534] COND FALSE !(a == 0) VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L541] COND TRUE __VERIFIER_nondet_int() [L542] COND TRUE \read(flag) [L543] p->h = 1 [L544] flag = 0 VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L549] t = (List) malloc(sizeof(struct node)) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-2:0}] [L550] COND FALSE !(t == 0) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-2:0}] [L551] p->n = t [L552] EXPR p->n [L552] p = p->n [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 [L555] EXPR a->h VAL [a={-1:0}, a->h=1, flag=0, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, t={-2:0}] [L555] COND FALSE !(a->h == 3) [L556] flag = 1 [L557] l1 = 0 [L558] l2 = 0 [L559] p = a VAL [a={-1:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-2:0}] [L560] EXPR p->h VAL [a={-1:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=1, t={-2:0}] [L560] COND TRUE p->h != 3 [L561] t = p [L562] EXPR p->n [L562] p = p->n [L563] COND TRUE \read(flag) [L564] t->n = l1 [L565] l1 = t [L566] flag = 0 VAL [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, t={-1:0}] [L560] EXPR p->h VAL [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, p->h=3, t={-1:0}] [L560] COND FALSE !(p->h != 3) [L573] p = l1 VAL [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-1:0}] [L574] COND TRUE p != 0 [L575] EXPR p->h VAL [a={-1:0}, flag=0, l1={-1:0}, l2={0:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=1, t={-1:0}] [L575] COND TRUE p->h != 2 [L584] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "splice-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 132 SDtfs, 34 SDslu, 164 SDs, 0 SdLazy, 257 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 5387 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, 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...