/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-sets/test_add-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:31:44,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:31:44,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:31:44,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:31:44,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:31:44,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:31:44,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:31:44,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:31:44,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:31:44,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:31:44,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:31:44,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:31:44,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:31:44,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:31:44,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:31:44,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:31:44,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:31:44,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:31:44,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:31:44,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:31:44,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:31:44,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:31:44,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:31:44,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:31:44,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 11:31:44,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 11:31:44,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 11:31:44,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 11:31:44,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 11:31:44,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 11:31:44,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 11:31:44,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 11:31:44,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 11:31:44,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 11:31:44,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 11:31:44,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 11:31:44,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 11:31:44,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 11:31:44,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:31:44,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:31:44,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:31:44,100 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 [2020-07-20 11:31:44,114 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:31:44,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:31:44,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:31:44,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:31:44,116 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:31:44,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:31:44,117 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:31:44,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:31:44,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:31:44,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:31:44,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:31:44,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:31:44,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:31:44,118 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:31:44,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:31:44,118 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:31:44,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:31:44,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:31:44,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:31:44,119 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:31:44,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:31:44,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:31:44,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:31:44,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:31:44,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:31:44,121 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:31:44,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:44,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:31:44,121 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:31:44,122 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 11:31:44,524 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:31:44,542 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:31:44,549 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:31:44,551 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:31:44,551 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:31:44,552 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_add-1.i [2020-07-20 11:31:44,626 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4f9bf803/9cb86ff53e874767856a6a449f264986/FLAG23c7cf16c [2020-07-20 11:31:45,175 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:31:45,176 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_add-1.i [2020-07-20 11:31:45,201 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4f9bf803/9cb86ff53e874767856a6a449f264986/FLAG23c7cf16c [2020-07-20 11:31:45,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4f9bf803/9cb86ff53e874767856a6a449f264986 [2020-07-20 11:31:45,492 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:31:45,495 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:31:45,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:31:45,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:31:45,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:31:45,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:31:45" (1/1) ... [2020-07-20 11:31:45,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10bff91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:45, skipping insertion in model container [2020-07-20 11:31:45,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:31:45" (1/1) ... [2020-07-20 11:31:45,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:31:45,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:31:46,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:31:46,103 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:31:46,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:31:46,269 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:31:46,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:46 WrapperNode [2020-07-20 11:31:46,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:31:46,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:31:46,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:31:46,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:31:46,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:46" (1/1) ... [2020-07-20 11:31:46,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:46" (1/1) ... [2020-07-20 11:31:46,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:46" (1/1) ... [2020-07-20 11:31:46,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:46" (1/1) ... [2020-07-20 11:31:46,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:46" (1/1) ... [2020-07-20 11:31:46,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:46" (1/1) ... [2020-07-20 11:31:46,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:46" (1/1) ... [2020-07-20 11:31:46,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:31:46,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:31:46,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:31:46,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:31:46,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:31:46,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:31:46,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:31:46,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-20 11:31:46,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-20 11:31:46,419 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 11:31:46,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-07-20 11:31:46,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2020-07-20 11:31:46,420 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2020-07-20 11:31:46,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2020-07-20 11:31:46,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2020-07-20 11:31:46,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2020-07-20 11:31:46,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2020-07-20 11:31:46,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2020-07-20 11:31:46,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2020-07-20 11:31:46,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2020-07-20 11:31:46,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-07-20 11:31:46,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2020-07-20 11:31:46,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2020-07-20 11:31:46,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2020-07-20 11:31:46,422 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-07-20 11:31:46,422 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:31:46,422 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-20 11:31:46,423 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-20 11:31:46,423 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-20 11:31:46,425 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-20 11:31:46,425 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-20 11:31:46,426 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-20 11:31:46,426 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-20 11:31:46,426 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-20 11:31:46,427 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-20 11:31:46,427 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-20 11:31:46,427 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-20 11:31:46,427 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-20 11:31:46,427 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-20 11:31:46,427 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-20 11:31:46,427 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-20 11:31:46,428 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-20 11:31:46,428 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-20 11:31:46,428 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-20 11:31:46,428 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-20 11:31:46,428 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-20 11:31:46,428 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-20 11:31:46,429 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-20 11:31:46,429 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-20 11:31:46,429 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-20 11:31:46,429 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-20 11:31:46,429 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-20 11:31:46,429 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-20 11:31:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-20 11:31:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-20 11:31:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-20 11:31:46,430 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-20 11:31:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-20 11:31:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-20 11:31:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-20 11:31:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-20 11:31:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-20 11:31:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-20 11:31:46,431 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-20 11:31:46,432 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-20 11:31:46,432 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-20 11:31:46,432 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-20 11:31:46,432 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-20 11:31:46,432 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-20 11:31:46,433 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-20 11:31:46,433 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-20 11:31:46,433 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-20 11:31:46,433 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-20 11:31:46,433 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-20 11:31:46,434 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-20 11:31:46,434 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-20 11:31:46,434 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-20 11:31:46,434 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-20 11:31:46,434 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 11:31:46,434 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 11:31:46,434 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-20 11:31:46,435 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 11:31:46,435 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-20 11:31:46,435 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-20 11:31:46,435 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-20 11:31:46,436 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-20 11:31:46,436 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 11:31:46,436 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-20 11:31:46,436 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-20 11:31:46,437 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 11:31:46,437 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-20 11:31:46,437 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-20 11:31:46,437 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-20 11:31:46,437 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-20 11:31:46,437 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-20 11:31:46,438 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-20 11:31:46,438 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-20 11:31:46,438 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-20 11:31:46,438 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-20 11:31:46,438 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-20 11:31:46,438 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-20 11:31:46,438 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-20 11:31:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-20 11:31:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-20 11:31:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-20 11:31:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-20 11:31:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-20 11:31:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-20 11:31:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-20 11:31:46,439 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-20 11:31:46,440 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-20 11:31:46,440 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-20 11:31:46,440 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-20 11:31:46,440 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-20 11:31:46,440 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-20 11:31:46,440 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-20 11:31:46,440 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-20 11:31:46,440 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-20 11:31:46,441 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-20 11:31:46,441 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-20 11:31:46,441 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-20 11:31:46,441 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-20 11:31:46,441 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-20 11:31:46,441 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-20 11:31:46,442 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-20 11:31:46,442 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-20 11:31:46,442 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-20 11:31:46,442 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-20 11:31:46,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:31:46,443 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 11:31:46,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:31:46,443 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-07-20 11:31:46,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 11:31:46,443 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2020-07-20 11:31:46,443 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2020-07-20 11:31:46,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 11:31:46,444 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2020-07-20 11:31:46,444 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2020-07-20 11:31:46,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2020-07-20 11:31:46,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 11:31:46,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2020-07-20 11:31:46,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2020-07-20 11:31:46,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2020-07-20 11:31:46,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2020-07-20 11:31:46,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-07-20 11:31:46,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2020-07-20 11:31:46,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2020-07-20 11:31:46,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2020-07-20 11:31:46,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 11:31:46,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 11:31:46,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 11:31:46,449 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-07-20 11:31:46,449 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:31:46,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:31:46,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 11:31:46,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-20 11:31:46,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:31:47,174 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:31:47,174 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-20 11:31:47,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:31:47 BoogieIcfgContainer [2020-07-20 11:31:47,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:31:47,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:31:47,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:31:47,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:31:47,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:31:45" (1/3) ... [2020-07-20 11:31:47,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b189306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:31:47, skipping insertion in model container [2020-07-20 11:31:47,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:46" (2/3) ... [2020-07-20 11:31:47,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b189306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:31:47, skipping insertion in model container [2020-07-20 11:31:47,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:31:47" (3/3) ... [2020-07-20 11:31:47,188 INFO L109 eAbstractionObserver]: Analyzing ICFG test_add-1.i [2020-07-20 11:31:47,200 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:31:47,208 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:31:47,220 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:31:47,244 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:31:47,245 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:31:47,245 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:31:47,245 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:31:47,245 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:31:47,245 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:31:47,245 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:31:47,246 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:31:47,266 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-07-20 11:31:47,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 11:31:47,273 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:31:47,274 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:31:47,275 INFO L427 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:31:47,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:31:47,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1154845074, now seen corresponding path program 1 times [2020-07-20 11:31:47,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:31:47,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889166301] [2020-07-20 11:31:47,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:31:47,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 11:31:47,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:31:47,567 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 11:31:47,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:31:47,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889166301] [2020-07-20 11:31:47,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:31:47,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 11:31:47,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648814676] [2020-07-20 11:31:47,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 11:31:47,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:31:47,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 11:31:47,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:31:47,595 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 2 states. [2020-07-20 11:31:47,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:31:47,662 INFO L93 Difference]: Finished difference Result 96 states and 111 transitions. [2020-07-20 11:31:47,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 11:31:47,665 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 28 [2020-07-20 11:31:47,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:31:47,679 INFO L225 Difference]: With dead ends: 96 [2020-07-20 11:31:47,679 INFO L226 Difference]: Without dead ends: 46 [2020-07-20 11:31:47,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:31:47,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-07-20 11:31:47,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-07-20 11:31:47,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-07-20 11:31:47,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2020-07-20 11:31:47,744 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 28 [2020-07-20 11:31:47,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:31:47,745 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2020-07-20 11:31:47,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 11:31:47,746 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2020-07-20 11:31:47,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 11:31:47,753 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:31:47,753 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:31:47,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:47,969 INFO L427 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:31:47,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:31:47,970 INFO L82 PathProgramCache]: Analyzing trace with hash 221547774, now seen corresponding path program 1 times [2020-07-20 11:31:47,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:31:47,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037066671] [2020-07-20 11:31:47,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:31:48,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:31:48,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:31:48,143 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:31:48,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:31:48,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037066671] [2020-07-20 11:31:48,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:31:48,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 11:31:48,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492823073] [2020-07-20 11:31:48,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 11:31:48,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:31:48,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 11:31:48,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:31:48,147 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 4 states. [2020-07-20 11:31:48,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:31:48,172 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-07-20 11:31:48,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 11:31:48,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-07-20 11:31:48,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:31:48,177 INFO L225 Difference]: With dead ends: 64 [2020-07-20 11:31:48,177 INFO L226 Difference]: Without dead ends: 50 [2020-07-20 11:31:48,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:31:48,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-20 11:31:48,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-07-20 11:31:48,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-20 11:31:48,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-07-20 11:31:48,190 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 28 [2020-07-20 11:31:48,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:31:48,191 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-07-20 11:31:48,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 11:31:48,191 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-07-20 11:31:48,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 11:31:48,193 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:31:48,193 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] [2020-07-20 11:31:48,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:48,408 INFO L427 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:31:48,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:31:48,409 INFO L82 PathProgramCache]: Analyzing trace with hash -2088028185, now seen corresponding path program 1 times [2020-07-20 11:31:48,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:31:48,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302507844] [2020-07-20 11:31:48,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:31:48,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:31:48,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:31:48,612 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 11:31:48,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:31:48,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302507844] [2020-07-20 11:31:48,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:31:48,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 11:31:48,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267511822] [2020-07-20 11:31:48,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 11:31:48,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:31:48,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 11:31:48,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:31:48,616 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 4 states. [2020-07-20 11:31:48,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:31:48,638 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2020-07-20 11:31:48,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 11:31:48,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-07-20 11:31:48,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:31:48,640 INFO L225 Difference]: With dead ends: 54 [2020-07-20 11:31:48,640 INFO L226 Difference]: Without dead ends: 50 [2020-07-20 11:31:48,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:31:48,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-20 11:31:48,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-07-20 11:31:48,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-20 11:31:48,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2020-07-20 11:31:48,656 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 28 [2020-07-20 11:31:48,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:31:48,656 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2020-07-20 11:31:48,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 11:31:48,656 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2020-07-20 11:31:48,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 11:31:48,659 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:31:48,660 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:31:48,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:48,861 INFO L427 AbstractCegarLoop]: === Iteration 4 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:31:48,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:31:48,862 INFO L82 PathProgramCache]: Analyzing trace with hash -513424880, now seen corresponding path program 1 times [2020-07-20 11:31:48,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:31:48,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995331236] [2020-07-20 11:31:48,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:31:48,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 47 conjunts are in the unsatisfiable core [2020-07-20 11:31:48,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:31:49,045 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2020-07-20 11:31:49,046 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 11:31:49,056 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 11:31:49,060 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2020-07-20 11:31:49,060 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 11:31:49,067 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 11:31:49,068 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 11:31:49,068 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2020-07-20 11:31:49,191 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:31:49,201 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:31:49,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:31:49,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995331236] [2020-07-20 11:31:49,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:31:49,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 11:31:49,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676649313] [2020-07-20 11:31:49,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 11:31:49,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:31:49,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 11:31:49,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-20 11:31:49,204 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 9 states. [2020-07-20 11:31:49,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:31:49,811 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2020-07-20 11:31:49,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-20 11:31:49,811 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-07-20 11:31:49,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:31:49,812 INFO L225 Difference]: With dead ends: 95 [2020-07-20 11:31:49,813 INFO L226 Difference]: Without dead ends: 73 [2020-07-20 11:31:49,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-07-20 11:31:49,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-07-20 11:31:49,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 52. [2020-07-20 11:31:49,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-07-20 11:31:49,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-07-20 11:31:49,823 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 28 [2020-07-20 11:31:49,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:31:49,823 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-07-20 11:31:49,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 11:31:49,823 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-07-20 11:31:49,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-20 11:31:49,825 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:31:49,825 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:31:50,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:50,039 INFO L427 AbstractCegarLoop]: === Iteration 5 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:31:50,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:31:50,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1823590536, now seen corresponding path program 1 times [2020-07-20 11:31:50,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:31:50,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097252092] [2020-07-20 11:31:50,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:31:50,295 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:31:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:31:50,336 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:31:50,379 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 11:31:50,379 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 11:31:50,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:50,623 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 6 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2020-07-20 11:31:50,624 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 7 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2020-07-20 11:31:50,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:31:50 BoogieIcfgContainer [2020-07-20 11:31:50,644 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:31:50,646 INFO L168 Benchmark]: Toolchain (without parser) took 5152.11 ms. Allocated memory was 149.9 MB in the beginning and 248.0 MB in the end (delta: 98.0 MB). Free memory was 105.8 MB in the beginning and 138.4 MB in the end (delta: -32.6 MB). Peak memory consumption was 65.4 MB. Max. memory is 7.1 GB. [2020-07-20 11:31:50,647 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 149.9 MB. Free memory was 126.0 MB in the beginning and 125.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 11:31:50,648 INFO L168 Benchmark]: CACSL2BoogieTranslator took 774.07 ms. Allocated memory was 149.9 MB in the beginning and 207.6 MB in the end (delta: 57.7 MB). Free memory was 105.4 MB in the beginning and 169.2 MB in the end (delta: -63.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-07-20 11:31:50,648 INFO L168 Benchmark]: Boogie Preprocessor took 81.37 ms. Allocated memory is still 207.6 MB. Free memory was 169.2 MB in the beginning and 165.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-07-20 11:31:50,649 INFO L168 Benchmark]: RCFGBuilder took 826.70 ms. Allocated memory is still 207.6 MB. Free memory was 165.9 MB in the beginning and 108.6 MB in the end (delta: 57.3 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. [2020-07-20 11:31:50,650 INFO L168 Benchmark]: TraceAbstraction took 3463.66 ms. Allocated memory was 207.6 MB in the beginning and 248.0 MB in the end (delta: 40.4 MB). Free memory was 108.0 MB in the beginning and 138.4 MB in the end (delta: -30.4 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:31:50,654 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 149.9 MB. Free memory was 126.0 MB in the beginning and 125.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 774.07 ms. Allocated memory was 149.9 MB in the beginning and 207.6 MB in the end (delta: 57.7 MB). Free memory was 105.4 MB in the beginning and 169.2 MB in the end (delta: -63.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 81.37 ms. Allocated memory is still 207.6 MB. Free memory was 169.2 MB in the beginning and 165.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 826.70 ms. Allocated memory is still 207.6 MB. Free memory was 165.9 MB in the beginning and 108.6 MB in the end (delta: 57.3 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3463.66 ms. Allocated memory was 207.6 MB in the beginning and 248.0 MB in the end (delta: 40.4 MB). Free memory was 108.0 MB in the beginning and 138.4 MB in the end (delta: -30.4 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 6 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 7 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 656]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L651] struct ldv_list_head s1 = { &(s1), &(s1) }; VAL [\old(s1)=null, \old(s1)=null, s1={2:0}] [L660] CALL foo() VAL [s1={2:0}] [L654] int j = __VERIFIER_nondet_int(); [L655] CALL ldv_set_add(j, &s1) VAL [\old(new)=-2147477260, s={2:0}, s1={2:0}] [L622] CALL, EXPR ldv_is_in_set(new, s) VAL [\old(e)=-2147477260, s={2:0}, s1={2:0}] [L640] struct ldv_list_element *m; [L641] EXPR (s)->next [L641] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L641] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [\old(e)=-2147477260, __mptr={2:0}, e=-2147477260, m={2:-4}, s={2:0}, s={2:0}, s1={2:0}] [L641] COND FALSE !(&m->list != (s)) VAL [\old(e)=-2147477260, __mptr={2:0}, e=-2147477260, m={2:-4}, s={2:0}, s={2:0}, s1={2:0}] [L646] return 0; VAL [\old(e)=-2147477260, \result=0, __mptr={2:0}, e=-2147477260, m={2:-4}, s={2:0}, s={2:0}, s1={2:0}] [L622] RET, EXPR ldv_is_in_set(new, s) VAL [\old(new)=-2147477260, ldv_is_in_set(new, s)=0, new=-2147477260, s={2:0}, s={2:0}, s1={2:0}] [L622] COND TRUE !ldv_is_in_set(new, s) [L623] struct ldv_list_element *le; VAL [\old(new)=-2147477260, new=-2147477260, s={2:0}, s={2:0}, s1={2:0}] [L624] CALL, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [\old(size)=12, s1={2:0}] [L565] void *ptr = malloc(size); VAL [\old(size)=12, malloc(size)={-1:0}, ptr={-1:0}, s1={2:0}, size=12] [L566] CALL assume_abort_if_not(ptr!=0) VAL [\old(cond)=1, s1={2:0}] [L554] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s1={2:0}] [L566] RET assume_abort_if_not(ptr!=0) VAL [\old(size)=12, malloc(size)={-1:0}, ptr={-1:0}, s1={2:0}, size=12] [L567] return ptr; VAL [\old(size)=12, \result={-1:0}, malloc(size)={-1:0}, ptr={-1:0}, s1={2:0}, size=12] [L624] RET, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [\old(new)=-2147477260, ldv_successful_malloc(sizeof(struct ldv_list_element))={-1:0}, new=-2147477260, s={2:0}, s={2:0}, s1={2:0}] [L624] le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) [L625] le->e = new VAL [\old(new)=-2147477260, le={-1:0}, new=-2147477260, s={2:0}, s={2:0}, s1={2:0}] [L626] CALL ldv_list_add(&le->list, s) VAL [head={2:0}, new={-1:4}, s1={2:0}] [L594] EXPR head->next VAL [head={2:0}, head={2:0}, head->next={2:0}, new={-1:4}, new={-1:4}, s1={2:0}] [L594] CALL __ldv_list_add(new, head, head->next) VAL [new={-1:4}, next={2:0}, prev={2:0}, s1={2:0}] [L582] next->prev = new [L583] new->next = next [L584] new->prev = prev [L585] prev->next = new VAL [new={-1:4}, new={-1:4}, next={2:0}, next={2:0}, prev={2:0}, prev={2:0}, s1={2:0}] [L594] RET __ldv_list_add(new, head, head->next) VAL [head={2:0}, head={2:0}, head->next={2:0}, new={-1:4}, new={-1:4}, s1={2:0}] [L626] RET ldv_list_add(&le->list, s) VAL [\old(new)=-2147477260, le={-1:0}, new=-2147477260, s={2:0}, s={2:0}, s1={2:0}] [L655] RET ldv_set_add(j, &s1) VAL [j=-2147477260, s1={2:0}] [L656] CALL ldv_is_in_set(j, &s1) VAL [\old(e)=-2147477260, s={2:0}, s1={2:0}] [L640] struct ldv_list_element *m; [L641] EXPR (s)->next [L641] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L641] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [\old(e)=-2147477260, __mptr={-1:4}, e=-2147477260, m={-1:0}, s={2:0}, s={2:0}, s1={2:0}] [L641] COND TRUE &m->list != (s) [L642] EXPR m->e VAL [\old(e)=-2147477260, __mptr={-1:4}, e=-2147477260, m={-1:0}, m->e=-2147477260, s={2:0}, s={2:0}, s1={2:0}] [L642] COND TRUE m->e == e [L643] return 1; VAL [\old(e)=-2147477260, \result=1, __mptr={-1:4}, e=-2147477260, m={-1:0}, s={2:0}, s={2:0}, s1={2:0}] [L656] RET ldv_is_in_set(j, &s1) VAL [j=-2147477260, ldv_is_in_set(j, &s1)=1, s1={2:0}] [L656] COND TRUE ldv_is_in_set(j, &s1) [L656] __VERIFIER_error() VAL [j=-2147477260, s1={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 21 procedures, 99 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.3s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 194 SDtfs, 150 SDslu, 238 SDs, 0 SdLazy, 204 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred 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: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 21 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 11907 SizeOfPredicates, 20 NumberOfNonLiveVariables, 657 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 19/19 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...