/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true -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 0.1.25-5644d1e-m [2020-08-18 16:18:23,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:18:23,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:18:23,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:18:23,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:18:23,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:18:23,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:18:23,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:18:23,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:18:23,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:18:23,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:18:23,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:18:23,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:18:23,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:18:23,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:18:23,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:18:23,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:18:23,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:18:23,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:18:23,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:18:23,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:18:23,691 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:18:23,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:18:23,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:18:23,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:18:23,704 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:18:23,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:18:23,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:18:23,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:18:23,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:18:23,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:18:23,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:18:23,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:18:23,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:18:23,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:18:23,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:18:23,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:18:23,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:18:23,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:18:23,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:18:23,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:18:23,714 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 16:18:23,755 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:18:23,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:18:23,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:18:23,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:18:23,757 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:18:23,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:18:23,758 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:18:23,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:18:23,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:18:23,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:18:23,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:18:23,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:18:23,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:18:23,760 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:18:23,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:18:23,760 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:18:23,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:18:23,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:18:23,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:18:23,761 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:18:23,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:18:23,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:18:23,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:18:23,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:18:23,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:18:23,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:18:23,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:18:23,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:18:23,763 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:18:23,763 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 -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true [2020-08-18 16:18:24,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:18:24,079 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:18:24,084 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:18:24,086 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:18:24,088 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:18:24,089 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_add-1.i [2020-08-18 16:18:24,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03519a663/2833cf6792af45d69ebd7aa986ade6ca/FLAGe6266f550 [2020-08-18 16:18:24,712 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:18:24,713 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-sets/test_add-1.i [2020-08-18 16:18:24,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03519a663/2833cf6792af45d69ebd7aa986ade6ca/FLAGe6266f550 [2020-08-18 16:18:25,039 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/03519a663/2833cf6792af45d69ebd7aa986ade6ca [2020-08-18 16:18:25,048 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:18:25,050 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:18:25,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:18:25,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:18:25,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:18:25,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:18:25" (1/1) ... [2020-08-18 16:18:25,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e9488dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:18:25, skipping insertion in model container [2020-08-18 16:18:25,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:18:25" (1/1) ... [2020-08-18 16:18:25,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:18:25,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:18:25,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:18:25,633 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:18:25,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:18:25,784 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:18:25,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:18:25 WrapperNode [2020-08-18 16:18:25,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:18:25,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:18:25,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:18:25,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:18:25,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:18:25" (1/1) ... [2020-08-18 16:18:25,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:18:25" (1/1) ... [2020-08-18 16:18:25,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:18:25" (1/1) ... [2020-08-18 16:18:25,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:18:25" (1/1) ... [2020-08-18 16:18:25,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:18:25" (1/1) ... [2020-08-18 16:18:25,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:18:25" (1/1) ... [2020-08-18 16:18:25,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:18:25" (1/1) ... [2020-08-18 16:18:25,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:18:25,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:18:25,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:18:25,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:18:25,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:18:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-18 16:18:25,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:18:25,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:18:25,958 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-18 16:18:25,958 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-18 16:18:25,958 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 16:18:25,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 16:18:25,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2020-08-18 16:18:25,959 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2020-08-18 16:18:25,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2020-08-18 16:18:25,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2020-08-18 16:18:25,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2020-08-18 16:18:25,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2020-08-18 16:18:25,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2020-08-18 16:18:25,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2020-08-18 16:18:25,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2020-08-18 16:18:25,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-18 16:18:25,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2020-08-18 16:18:25,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2020-08-18 16:18:25,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2020-08-18 16:18:25,961 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-08-18 16:18:25,961 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:18:25,961 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-18 16:18:25,961 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-18 16:18:25,961 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-18 16:18:25,961 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-18 16:18:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-18 16:18:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-18 16:18:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-18 16:18:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-18 16:18:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-18 16:18:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-18 16:18:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-18 16:18:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-18 16:18:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-18 16:18:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-18 16:18:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-18 16:18:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-18 16:18:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-18 16:18:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-18 16:18:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-18 16:18:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-18 16:18:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-18 16:18:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-18 16:18:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-18 16:18:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-18 16:18:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-18 16:18:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-18 16:18:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-18 16:18:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-18 16:18:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-18 16:18:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-18 16:18:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-18 16:18:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-18 16:18:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-18 16:18:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-18 16:18:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-18 16:18:25,966 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-18 16:18:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-18 16:18:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-18 16:18:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-18 16:18:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-18 16:18:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-18 16:18:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-18 16:18:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-18 16:18:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-18 16:18:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-18 16:18:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-18 16:18:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-18 16:18:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-18 16:18:25,968 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-18 16:18:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-18 16:18:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-18 16:18:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-18 16:18:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:18:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 16:18:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-18 16:18:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:18:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-18 16:18:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-18 16:18:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-18 16:18:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-18 16:18:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 16:18:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-18 16:18:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-18 16:18:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-18 16:18:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-18 16:18:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-18 16:18:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-18 16:18:25,971 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-18 16:18:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-18 16:18:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-18 16:18:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-18 16:18:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-18 16:18:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-18 16:18:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-18 16:18:25,972 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-18 16:18:25,973 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-18 16:18:25,973 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-18 16:18:25,973 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-18 16:18:25,973 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-18 16:18:25,973 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-18 16:18:25,973 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-18 16:18:25,973 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-18 16:18:25,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-18 16:18:25,974 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-18 16:18:25,974 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-18 16:18:25,974 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-18 16:18:25,974 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-18 16:18:25,974 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-18 16:18:25,974 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-18 16:18:25,974 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-18 16:18:25,975 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-18 16:18:25,975 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-18 16:18:25,975 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-18 16:18:25,975 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-18 16:18:25,975 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-18 16:18:25,975 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-18 16:18:25,975 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-18 16:18:25,976 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-18 16:18:25,976 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-18 16:18:25,976 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-18 16:18:25,976 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-18 16:18:25,976 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-18 16:18:25,976 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:18:25,977 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 16:18:25,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:18:25,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 16:18:25,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:18:25,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2020-08-18 16:18:25,977 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2020-08-18 16:18:25,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:18:25,978 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2020-08-18 16:18:25,978 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2020-08-18 16:18:25,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2020-08-18 16:18:25,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:18:25,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2020-08-18 16:18:25,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2020-08-18 16:18:25,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2020-08-18 16:18:25,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2020-08-18 16:18:25,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-18 16:18:25,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2020-08-18 16:18:25,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2020-08-18 16:18:25,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2020-08-18 16:18:25,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:18:25,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:18:25,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:18:25,986 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-08-18 16:18:25,986 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:18:25,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:18:25,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:18:25,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 16:18:25,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:18:26,653 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:18:26,654 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-18 16:18:26,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:18:26 BoogieIcfgContainer [2020-08-18 16:18:26,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:18:26,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:18:26,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:18:26,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:18:26,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:18:25" (1/3) ... [2020-08-18 16:18:26,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a0455f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:18:26, skipping insertion in model container [2020-08-18 16:18:26,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:18:25" (2/3) ... [2020-08-18 16:18:26,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a0455f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:18:26, skipping insertion in model container [2020-08-18 16:18:26,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:18:26" (3/3) ... [2020-08-18 16:18:26,672 INFO L109 eAbstractionObserver]: Analyzing ICFG test_add-1.i [2020-08-18 16:18:26,683 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:18:26,692 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:18:26,707 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:18:26,736 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:18:26,736 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:18:26,736 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:18:26,736 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:18:26,736 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:18:26,737 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:18:26,737 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:18:26,737 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:18:26,759 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-08-18 16:18:26,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 16:18:26,767 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:26,768 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] [2020-08-18 16:18:26,768 INFO L427 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:18:26,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:26,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1154845074, now seen corresponding path program 1 times [2020-08-18 16:18:26,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:26,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734052653] [2020-08-18 16:18:26,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:27,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:27,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:18:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:27,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:18:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:27,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 16:18:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:27,085 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 16:18:27,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734052653] [2020-08-18 16:18:27,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:18:27,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:18:27,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981040888] [2020-08-18 16:18:27,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:18:27,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:27,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:18:27,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:18:27,116 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 4 states. [2020-08-18 16:18:27,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:27,398 INFO L93 Difference]: Finished difference Result 108 states and 126 transitions. [2020-08-18 16:18:27,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:18:27,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-08-18 16:18:27,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:27,415 INFO L225 Difference]: With dead ends: 108 [2020-08-18 16:18:27,416 INFO L226 Difference]: Without dead ends: 53 [2020-08-18 16:18:27,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:18:27,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-08-18 16:18:27,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2020-08-18 16:18:27,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-08-18 16:18:27,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2020-08-18 16:18:27,481 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 28 [2020-08-18 16:18:27,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:27,481 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2020-08-18 16:18:27,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:18:27,482 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2020-08-18 16:18:27,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 16:18:27,484 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:27,484 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] [2020-08-18 16:18:27,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:18:27,485 INFO L427 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:18:27,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:27,486 INFO L82 PathProgramCache]: Analyzing trace with hash 221547774, now seen corresponding path program 1 times [2020-08-18 16:18:27,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:27,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887598962] [2020-08-18 16:18:27,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:27,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:27,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:18:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:27,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:18:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:27,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 16:18:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:27,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 16:18:27,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887598962] [2020-08-18 16:18:27,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:18:27,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-18 16:18:27,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725924161] [2020-08-18 16:18:27,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:18:27,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:27,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:18:27,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:18:27,693 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 6 states. [2020-08-18 16:18:28,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:28,020 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2020-08-18 16:18:28,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 16:18:28,020 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-18 16:18:28,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:28,024 INFO L225 Difference]: With dead ends: 71 [2020-08-18 16:18:28,024 INFO L226 Difference]: Without dead ends: 57 [2020-08-18 16:18:28,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:18:28,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-18 16:18:28,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2020-08-18 16:18:28,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-08-18 16:18:28,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-08-18 16:18:28,040 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 28 [2020-08-18 16:18:28,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:28,041 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-08-18 16:18:28,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:18:28,041 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-08-18 16:18:28,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 16:18:28,046 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:28,047 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] [2020-08-18 16:18:28,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:18:28,047 INFO L427 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:18:28,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:28,051 INFO L82 PathProgramCache]: Analyzing trace with hash -2088028185, now seen corresponding path program 1 times [2020-08-18 16:18:28,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:28,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993459687] [2020-08-18 16:18:28,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:28,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:28,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:18:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:28,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:18:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:28,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 16:18:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:28,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-18 16:18:28,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993459687] [2020-08-18 16:18:28,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:18:28,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 16:18:28,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872864622] [2020-08-18 16:18:28,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 16:18:28,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:28,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 16:18:28,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 16:18:28,262 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 6 states. [2020-08-18 16:18:28,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:28,550 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2020-08-18 16:18:28,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 16:18:28,550 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-18 16:18:28,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:28,552 INFO L225 Difference]: With dead ends: 63 [2020-08-18 16:18:28,552 INFO L226 Difference]: Without dead ends: 57 [2020-08-18 16:18:28,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:18:28,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-18 16:18:28,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2020-08-18 16:18:28,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-08-18 16:18:28,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2020-08-18 16:18:28,564 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 28 [2020-08-18 16:18:28,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:28,564 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2020-08-18 16:18:28,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 16:18:28,564 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2020-08-18 16:18:28,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 16:18:28,566 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:28,566 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] [2020-08-18 16:18:28,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:18:28,566 INFO L427 AbstractCegarLoop]: === Iteration 4 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:18:28,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:28,567 INFO L82 PathProgramCache]: Analyzing trace with hash -513424880, now seen corresponding path program 1 times [2020-08-18 16:18:28,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:28,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171266619] [2020-08-18 16:18:28,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:28,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:18:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:28,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:18:28,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:28,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:18:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:28,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 16:18:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:18:28,807 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 16:18:28,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171266619] [2020-08-18 16:18:28,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:18:28,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:18:28,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384789888] [2020-08-18 16:18:28,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:18:28,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:18:28,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:18:28,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:18:28,812 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 8 states. [2020-08-18 16:18:29,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:18:29,486 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2020-08-18 16:18:29,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 16:18:29,487 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-08-18 16:18:29,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:18:29,489 INFO L225 Difference]: With dead ends: 82 [2020-08-18 16:18:29,489 INFO L226 Difference]: Without dead ends: 69 [2020-08-18 16:18:29,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-08-18 16:18:29,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-18 16:18:29,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2020-08-18 16:18:29,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-18 16:18:29,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-08-18 16:18:29,509 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 28 [2020-08-18 16:18:29,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:18:29,509 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-08-18 16:18:29,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:18:29,509 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-08-18 16:18:29,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-18 16:18:29,511 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:18:29,511 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] [2020-08-18 16:18:29,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:18:29,511 INFO L427 AbstractCegarLoop]: === Iteration 5 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:18:29,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:18:29,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1823590536, now seen corresponding path program 1 times [2020-08-18 16:18:29,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:18:29,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407641305] [2020-08-18 16:18:29,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:18:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 16:18:29,556 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 16:18:29,556 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 16:18:29,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:18:29,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:18:29 BoogieIcfgContainer [2020-08-18 16:18:29,580 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 16:18:29,583 INFO L168 Benchmark]: Toolchain (without parser) took 4531.99 ms. Allocated memory was 141.0 MB in the beginning and 244.3 MB in the end (delta: 103.3 MB). Free memory was 102.2 MB in the beginning and 164.3 MB in the end (delta: -62.1 MB). Peak memory consumption was 41.2 MB. Max. memory is 7.1 GB. [2020-08-18 16:18:29,584 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 16:18:29,585 INFO L168 Benchmark]: CACSL2BoogieTranslator took 733.90 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 165.9 MB in the end (delta: -63.9 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-08-18 16:18:29,586 INFO L168 Benchmark]: Boogie Preprocessor took 95.22 ms. Allocated memory is still 204.5 MB. Free memory was 165.9 MB in the beginning and 162.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-08-18 16:18:29,587 INFO L168 Benchmark]: RCFGBuilder took 780.72 ms. Allocated memory is still 204.5 MB. Free memory was 162.6 MB in the beginning and 105.2 MB in the end (delta: 57.5 MB). Peak memory consumption was 57.5 MB. Max. memory is 7.1 GB. [2020-08-18 16:18:29,588 INFO L168 Benchmark]: TraceAbstraction took 2916.05 ms. Allocated memory was 204.5 MB in the beginning and 244.3 MB in the end (delta: 39.8 MB). Free memory was 104.5 MB in the beginning and 164.3 MB in the end (delta: -59.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 16:18:29,591 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 733.90 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 165.9 MB in the end (delta: -63.9 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.22 ms. Allocated memory is still 204.5 MB. Free memory was 165.9 MB in the beginning and 162.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 780.72 ms. Allocated memory is still 204.5 MB. Free memory was 162.6 MB in the beginning and 105.2 MB in the end (delta: 57.5 MB). Peak memory consumption was 57.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2916.05 ms. Allocated memory was 204.5 MB in the beginning and 244.3 MB in the end (delta: 39.8 MB). Free memory was 104.5 MB in the beginning and 164.3 MB in the end (delta: -59.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * 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) }; [L660] CALL foo() [L654] int j = __VERIFIER_nondet_int(); [L655] CALL ldv_set_add(j, &s1) [L622] CALL, EXPR ldv_is_in_set(new, s) [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) );}) [L641] COND FALSE !(&m->list != (s)) [L646] return 0; [L622] RET, EXPR ldv_is_in_set(new, s) [L622] COND TRUE !ldv_is_in_set(new, s) [L623] struct ldv_list_element *le; [L624] CALL, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) [L565] void *ptr = malloc(size); [L566] CALL assume_abort_if_not(ptr!=0) [L554] COND FALSE !(!cond) [L566] RET assume_abort_if_not(ptr!=0) [L567] return ptr; [L624] RET, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) [L624] le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) [L625] le->e = new [L626] CALL ldv_list_add(&le->list, s) [L594] EXPR head->next [L594] CALL __ldv_list_add(new, head, head->next) [L582] next->prev = new [L583] new->next = next [L584] new->prev = prev [L585] prev->next = new [L594] RET __ldv_list_add(new, head, head->next) [L626] RET ldv_list_add(&le->list, s) [L655] RET ldv_set_add(j, &s1) [L656] CALL ldv_is_in_set(j, &s1) [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) );}) [L641] COND TRUE &m->list != (s) [L642] EXPR m->e [L642] COND TRUE m->e == e [L643] return 1; [L656] RET ldv_is_in_set(j, &s1) [L656] COND TRUE ldv_is_in_set(j, &s1) [L656] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 21 procedures, 99 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.8s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 171 SDtfs, 281 SDslu, 141 SDs, 0 SdLazy, 427 SolverSat, 146 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s 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, 38 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 12906 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 17/19 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...