/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-token-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:13:47,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:13:47,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:13:47,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:13:47,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:13:47,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:13:47,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:13:47,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:13:47,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:13:47,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:13:47,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:13:47,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:13:47,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:13:47,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:13:47,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:13:47,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:13:47,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:13:47,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:13:47,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:13:47,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:13:47,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:13:47,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:13:47,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:13:47,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:13:47,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 16:13:47,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 16:13:47,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 16:13:47,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 16:13:47,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 16:13:47,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 16:13:47,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 16:13:47,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 16:13:47,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 16:13:47,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 16:13:47,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 16:13:47,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 16:13:47,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 16:13:47,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 16:13:47,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:13:47,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:13:47,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:13:47,220 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 [2021-02-21 16:13:47,250 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:13:47,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:13:47,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:13:47,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:13:47,253 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:13:47,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:13:47,254 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:13:47,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:13:47,254 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:13:47,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:13:47,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:13:47,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:13:47,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:13:47,255 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:13:47,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:13:47,255 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:13:47,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:13:47,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:13:47,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:13:47,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:13:47,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:13:47,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:13:47,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:13:47,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:13:47,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:13:47,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:13:47,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:13:47,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:13:47,258 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:13:47,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:13:47,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:13:47,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:13:47,741 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:13:47,744 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:13:47,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-token-1.i [2021-02-21 16:13:47,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5fc91bac/c09187c9a19e4824add1907065e32b02/FLAGc4f9b8942 [2021-02-21 16:13:48,564 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:13:48,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-token-1.i [2021-02-21 16:13:48,584 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5fc91bac/c09187c9a19e4824add1907065e32b02/FLAGc4f9b8942 [2021-02-21 16:13:48,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5fc91bac/c09187c9a19e4824add1907065e32b02 [2021-02-21 16:13:48,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:13:48,889 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:13:48,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:13:48,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:13:48,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:13:48,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:13:48" (1/1) ... [2021-02-21 16:13:48,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cac7630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:48, skipping insertion in model container [2021-02-21 16:13:48,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:13:48" (1/1) ... [2021-02-21 16:13:48,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:13:49,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:13:49,390 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-token-1.i[22162,22175] [2021-02-21 16:13:49,411 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-token-1.i[22311,22324] [2021-02-21 16:13:49,415 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-token-1.i[22402,22415] [2021-02-21 16:13:49,418 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-token-1.i[22484,22497] [2021-02-21 16:13:49,420 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-token-1.i[22562,22575] [2021-02-21 16:13:49,424 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-token-1.i[22708,22721] [2021-02-21 16:13:49,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:13:49,446 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:13:49,550 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-token-1.i[22162,22175] [2021-02-21 16:13:49,569 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-token-1.i[22311,22324] [2021-02-21 16:13:49,571 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-token-1.i[22402,22415] [2021-02-21 16:13:49,572 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-token-1.i[22484,22497] [2021-02-21 16:13:49,577 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-token-1.i[22562,22575] [2021-02-21 16:13:49,581 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-token-1.i[22708,22721] [2021-02-21 16:13:49,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:13:49,647 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:13:49,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:49 WrapperNode [2021-02-21 16:13:49,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:13:49,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:13:49,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:13:49,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:13:49,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:49" (1/1) ... [2021-02-21 16:13:49,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:49" (1/1) ... [2021-02-21 16:13:49,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:49" (1/1) ... [2021-02-21 16:13:49,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:49" (1/1) ... [2021-02-21 16:13:49,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:49" (1/1) ... [2021-02-21 16:13:49,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:49" (1/1) ... [2021-02-21 16:13:49,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:49" (1/1) ... [2021-02-21 16:13:49,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:13:49,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:13:49,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:13:49,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:13:49,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:13:49,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:13:49,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:13:49,857 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:13:49,858 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:13:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-21 16:13:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-21 16:13:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-21 16:13:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-21 16:13:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-21 16:13:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-21 16:13:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-21 16:13:49,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-21 16:13:49,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-21 16:13:49,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-21 16:13:49,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-21 16:13:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-21 16:13:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-21 16:13:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-21 16:13:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-21 16:13:49,864 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-21 16:13:49,865 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-21 16:13:49,865 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-21 16:13:49,865 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-21 16:13:49,865 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-21 16:13:49,865 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-21 16:13:49,865 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-21 16:13:49,866 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-21 16:13:49,866 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-21 16:13:49,866 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-21 16:13:49,866 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-21 16:13:49,866 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-21 16:13:49,867 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-21 16:13:49,867 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-21 16:13:49,867 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-21 16:13:49,867 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-21 16:13:49,867 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-21 16:13:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-21 16:13:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-21 16:13:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-21 16:13:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-21 16:13:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-21 16:13:49,868 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-21 16:13:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-21 16:13:49,869 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-21 16:13:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-21 16:13:49,870 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-21 16:13:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-21 16:13:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-21 16:13:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-21 16:13:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-21 16:13:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-21 16:13:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-21 16:13:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-21 16:13:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-21 16:13:49,872 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 16:13:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-21 16:13:49,873 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-21 16:13:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 16:13:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-21 16:13:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-21 16:13:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-21 16:13:49,874 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-21 16:13:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-21 16:13:49,875 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:13:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-21 16:13:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-21 16:13:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-21 16:13:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-21 16:13:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-21 16:13:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-21 16:13:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-21 16:13:49,877 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-21 16:13:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-21 16:13:49,878 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-21 16:13:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-21 16:13:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-21 16:13:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-21 16:13:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-21 16:13:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-21 16:13:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-21 16:13:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-21 16:13:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-21 16:13:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-21 16:13:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-21 16:13:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-21 16:13:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-21 16:13:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-21 16:13:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-21 16:13:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-21 16:13:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-21 16:13:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-21 16:13:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-21 16:13:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-21 16:13:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-21 16:13:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-21 16:13:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-21 16:13:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-21 16:13:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-21 16:13:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-21 16:13:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-21 16:13:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-21 16:13:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-21 16:13:49,885 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-21 16:13:49,885 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-21 16:13:49,885 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-21 16:13:49,885 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-21 16:13:49,885 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-21 16:13:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:13:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:13:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 16:13:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 16:13:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:13:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:13:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:13:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 16:13:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 16:13:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:13:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 16:13:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:13:49,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:13:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:13:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:13:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:13:50,803 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:13:50,804 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-02-21 16:13:50,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:13:50 BoogieIcfgContainer [2021-02-21 16:13:50,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:13:50,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:13:50,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:13:50,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:13:50,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:13:48" (1/3) ... [2021-02-21 16:13:50,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45383a78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:13:50, skipping insertion in model container [2021-02-21 16:13:50,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:49" (2/3) ... [2021-02-21 16:13:50,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45383a78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:13:50, skipping insertion in model container [2021-02-21 16:13:50,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:13:50" (3/3) ... [2021-02-21 16:13:50,818 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-token-1.i [2021-02-21 16:13:50,826 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:13:50,834 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-02-21 16:13:50,885 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-02-21 16:13:50,918 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:13:50,918 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:13:50,918 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:13:50,918 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:13:50,919 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:13:50,919 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:13:50,919 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:13:50,919 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:13:50,942 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2021-02-21 16:13:50,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-02-21 16:13:50,949 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:50,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:13:50,951 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:13:50,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:50,958 INFO L82 PathProgramCache]: Analyzing trace with hash 364969828, now seen corresponding path program 1 times [2021-02-21 16:13:50,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:50,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086346871] [2021-02-21 16:13:50,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:51,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:51,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:51,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:51,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:51,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:51,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:51,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:51,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:13:51,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086346871] [2021-02-21 16:13:51,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:51,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 16:13:51,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420595994] [2021-02-21 16:13:51,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 16:13:51,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:51,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 16:13:51,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:13:51,297 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 3 states. [2021-02-21 16:13:51,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:51,497 INFO L93 Difference]: Finished difference Result 92 states and 138 transitions. [2021-02-21 16:13:51,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 16:13:51,499 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2021-02-21 16:13:51,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:51,509 INFO L225 Difference]: With dead ends: 92 [2021-02-21 16:13:51,510 INFO L226 Difference]: Without dead ends: 43 [2021-02-21 16:13:51,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:13:51,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-02-21 16:13:51,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-02-21 16:13:51,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-02-21 16:13:51,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2021-02-21 16:13:51,561 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 10 [2021-02-21 16:13:51,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:51,562 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2021-02-21 16:13:51,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 16:13:51,562 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2021-02-21 16:13:51,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-02-21 16:13:51,563 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:51,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:13:51,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:13:51,564 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:13:51,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:51,565 INFO L82 PathProgramCache]: Analyzing trace with hash 364203207, now seen corresponding path program 1 times [2021-02-21 16:13:51,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:51,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099909562] [2021-02-21 16:13:51,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:51,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:51,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:51,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:51,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:13:51,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:51,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:51,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:51,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:51,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:51,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:13:51,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099909562] [2021-02-21 16:13:51,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:51,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:13:51,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423869148] [2021-02-21 16:13:51,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:13:51,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:51,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:13:51,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:13:51,731 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 4 states. [2021-02-21 16:13:51,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:51,848 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2021-02-21 16:13:51,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:13:51,848 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-02-21 16:13:51,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:51,850 INFO L225 Difference]: With dead ends: 43 [2021-02-21 16:13:51,852 INFO L226 Difference]: Without dead ends: 41 [2021-02-21 16:13:51,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:13:51,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-02-21 16:13:51,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-02-21 16:13:51,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-02-21 16:13:51,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2021-02-21 16:13:51,866 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 10 [2021-02-21 16:13:51,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:51,867 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2021-02-21 16:13:51,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:13:51,867 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2021-02-21 16:13:51,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-02-21 16:13:51,867 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:51,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:13:51,868 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:13:51,869 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:13:51,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:51,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1594645978, now seen corresponding path program 1 times [2021-02-21 16:13:51,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:51,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420729107] [2021-02-21 16:13:51,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:51,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:51,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:51,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:51,961 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:51,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:13:51,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:51,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:13:51,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:51,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:52,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:52,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:52,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:52,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:13:52,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420729107] [2021-02-21 16:13:52,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:52,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:13:52,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140506966] [2021-02-21 16:13:52,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:13:52,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:52,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:13:52,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:13:52,051 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 5 states. [2021-02-21 16:13:52,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:52,236 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2021-02-21 16:13:52,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 16:13:52,237 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-02-21 16:13:52,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:52,238 INFO L225 Difference]: With dead ends: 67 [2021-02-21 16:13:52,239 INFO L226 Difference]: Without dead ends: 65 [2021-02-21 16:13:52,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:13:52,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-02-21 16:13:52,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 39. [2021-02-21 16:13:52,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-02-21 16:13:52,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-02-21 16:13:52,249 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2021-02-21 16:13:52,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:52,249 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-02-21 16:13:52,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:13:52,250 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-02-21 16:13:52,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-02-21 16:13:52,250 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:52,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:13:52,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 16:13:52,251 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:13:52,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:52,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1812212429, now seen corresponding path program 1 times [2021-02-21 16:13:52,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:52,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885270009] [2021-02-21 16:13:52,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:13:52,287 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:13:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:13:52,313 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:13:52,356 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 16:13:52,357 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 16:13:52,358 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 16:13:52,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:13:52 BoogieIcfgContainer [2021-02-21 16:13:52,411 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:13:52,413 INFO L168 Benchmark]: Toolchain (without parser) took 3536.59 ms. Allocated memory was 163.6 MB in the beginning and 198.2 MB in the end (delta: 34.6 MB). Free memory was 118.3 MB in the beginning and 159.2 MB in the end (delta: -40.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:13:52,414 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 163.6 MB. Free memory is still 135.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:13:52,417 INFO L168 Benchmark]: CACSL2BoogieTranslator took 754.81 ms. Allocated memory is still 163.6 MB. Free memory was 117.1 MB in the beginning and 135.6 MB in the end (delta: -18.5 MB). Peak memory consumption was 19.1 MB. Max. memory is 8.0 GB. [2021-02-21 16:13:52,423 INFO L168 Benchmark]: Boogie Preprocessor took 76.13 ms. Allocated memory is still 163.6 MB. Free memory was 135.6 MB in the beginning and 133.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-21 16:13:52,424 INFO L168 Benchmark]: RCFGBuilder took 1079.66 ms. Allocated memory is still 163.6 MB. Free memory was 132.5 MB in the beginning and 89.5 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:13:52,425 INFO L168 Benchmark]: TraceAbstraction took 1602.25 ms. Allocated memory was 163.6 MB in the beginning and 198.2 MB in the end (delta: 34.6 MB). Free memory was 89.0 MB in the beginning and 159.2 MB in the end (delta: -70.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:13:52,435 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 163.6 MB. Free memory is still 135.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 754.81 ms. Allocated memory is still 163.6 MB. Free memory was 117.1 MB in the beginning and 135.6 MB in the end (delta: -18.5 MB). Peak memory consumption was 19.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 76.13 ms. Allocated memory is still 163.6 MB. Free memory was 135.6 MB in the beginning and 133.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1079.66 ms. Allocated memory is still 163.6 MB. Free memory was 132.5 MB in the beginning and 89.5 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1602.25 ms. Allocated memory was 163.6 MB in the beginning and 198.2 MB in the end (delta: 34.6 MB). Free memory was 89.0 MB in the beginning and 159.2 MB in the end (delta: -70.2 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1031]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1003] SLL* head = malloc(sizeof(SLL)); [L1004] head->next = ((void*)0) [L1005] head->data = 0 [L1007] SLL* x = head; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1010] COND FALSE !(__VERIFIER_nondet_int()) [L1018] x->data = 1 [L1019] x->next = malloc(sizeof(SLL)) [L1020] EXPR x->next [L1020] x->next->data = 2 [L1022] x = head VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1024] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1026] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1] [L1026] COND FALSE !(1 != x->data) [L1031] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1] [L1031] COND TRUE !(2 == x->data) [L1031] reach_error() VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 52 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 76 SDslu, 61 SDs, 0 SdLazy, 169 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred 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, 3 MinimizatonAttempts, 26 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 1081 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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...