/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/dll-sorted-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:13:29,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:13:29,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:13:29,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:13:29,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:13:29,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:13:29,772 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:13:29,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:13:29,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:13:29,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:13:29,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:13:29,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:13:29,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:13:29,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:13:29,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:13:29,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:13:29,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:13:29,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:13:29,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:13:29,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:13:29,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:13:29,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:13:29,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:13:29,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:13:29,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 16:13:29,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 16:13:29,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 16:13:29,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 16:13:29,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 16:13:29,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 16:13:29,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 16:13:29,855 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 16:13:29,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 16:13:29,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 16:13:29,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 16:13:29,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 16:13:29,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 16:13:29,860 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 16:13:29,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:13:29,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:13:29,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:13:29,864 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 16:13:29,890 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:13:29,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:13:29,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:13:29,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:13:29,893 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:13:29,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:13:29,894 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:13:29,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:13:29,894 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:13:29,894 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:13:29,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:13:29,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:13:29,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:13:29,895 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:13:29,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:13:29,896 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:13:29,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:13:29,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:13:29,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:13:29,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:13:29,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:13:29,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:13:29,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:13:29,898 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:13:29,898 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:13:29,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:13:29,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:13:29,899 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:13:29,899 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:13:30,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:13:30,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:13:30,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:13:30,384 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:13:30,385 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:13:30,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2021-02-21 16:13:30,479 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae827871e/8e302bf313be40dbb450ac6573482768/FLAG7f0bc4b5c [2021-02-21 16:13:31,158 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:13:31,159 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2021-02-21 16:13:31,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae827871e/8e302bf313be40dbb450ac6573482768/FLAG7f0bc4b5c [2021-02-21 16:13:31,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae827871e/8e302bf313be40dbb450ac6573482768 [2021-02-21 16:13:31,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:13:31,455 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:13:31,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:13:31,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:13:31,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:13:31,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:13:31" (1/1) ... [2021-02-21 16:13:31,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eded530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:31, skipping insertion in model container [2021-02-21 16:13:31,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:13:31" (1/1) ... [2021-02-21 16:13:31,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:13:31,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:13:31,882 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/dll-sorted-1.i[22384,22397] [2021-02-21 16:13:31,891 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/dll-sorted-1.i[22614,22627] [2021-02-21 16:13:31,899 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/dll-sorted-1.i[22989,23002] [2021-02-21 16:13:31,901 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/dll-sorted-1.i[23053,23066] [2021-02-21 16:13:31,905 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/dll-sorted-1.i[23184,23197] [2021-02-21 16:13:31,906 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/dll-sorted-1.i[23248,23261] [2021-02-21 16:13:31,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:13:31,930 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:13:32,005 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/dll-sorted-1.i[22384,22397] [2021-02-21 16:13:32,013 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/dll-sorted-1.i[22614,22627] [2021-02-21 16:13:32,020 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/dll-sorted-1.i[22989,23002] [2021-02-21 16:13:32,021 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/dll-sorted-1.i[23053,23066] [2021-02-21 16:13:32,026 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/dll-sorted-1.i[23184,23197] [2021-02-21 16:13:32,029 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/dll-sorted-1.i[23248,23261] [2021-02-21 16:13:32,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:13:32,116 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:13:32,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:32 WrapperNode [2021-02-21 16:13:32,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:13:32,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:13:32,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:13:32,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:13:32,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:32" (1/1) ... [2021-02-21 16:13:32,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:32" (1/1) ... [2021-02-21 16:13:32,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:32" (1/1) ... [2021-02-21 16:13:32,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:32" (1/1) ... [2021-02-21 16:13:32,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:32" (1/1) ... [2021-02-21 16:13:32,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:32" (1/1) ... [2021-02-21 16:13:32,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:32" (1/1) ... [2021-02-21 16:13:32,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:13:32,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:13:32,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:13:32,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:13:32,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:32" (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 16:13:32,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:13:32,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:13:32,312 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:13:32,312 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:13:32,312 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-21 16:13:32,313 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-21 16:13:32,313 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-21 16:13:32,313 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-21 16:13:32,313 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-21 16:13:32,313 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-21 16:13:32,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-21 16:13:32,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-21 16:13:32,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-21 16:13:32,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-21 16:13:32,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-21 16:13:32,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-21 16:13:32,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-21 16:13:32,315 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-21 16:13:32,315 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-21 16:13:32,315 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-21 16:13:32,315 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-21 16:13:32,315 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-21 16:13:32,316 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-21 16:13:32,316 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-21 16:13:32,316 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-21 16:13:32,316 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-21 16:13:32,316 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-21 16:13:32,316 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-21 16:13:32,316 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-21 16:13:32,317 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-21 16:13:32,317 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-21 16:13:32,317 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-21 16:13:32,317 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-21 16:13:32,317 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-21 16:13:32,317 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-21 16:13:32,318 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-21 16:13:32,318 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-21 16:13:32,318 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-21 16:13:32,318 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-21 16:13:32,318 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-21 16:13:32,318 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-21 16:13:32,318 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-21 16:13:32,319 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-21 16:13:32,319 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-21 16:13:32,320 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-21 16:13:32,320 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-21 16:13:32,320 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-21 16:13:32,320 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-21 16:13:32,320 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-21 16:13:32,320 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-21 16:13:32,321 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-21 16:13:32,321 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-21 16:13:32,321 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-21 16:13:32,321 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-21 16:13:32,322 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 16:13:32,322 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-21 16:13:32,322 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-21 16:13:32,322 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 16:13:32,322 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-21 16:13:32,323 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-21 16:13:32,323 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-21 16:13:32,323 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-21 16:13:32,324 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-21 16:13:32,324 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:13:32,324 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-21 16:13:32,324 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-21 16:13:32,324 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-21 16:13:32,325 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-21 16:13:32,326 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-21 16:13:32,326 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-21 16:13:32,326 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-21 16:13:32,326 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-21 16:13:32,327 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-21 16:13:32,327 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-21 16:13:32,328 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-21 16:13:32,329 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-21 16:13:32,329 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-21 16:13:32,329 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-21 16:13:32,329 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-21 16:13:32,330 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-21 16:13:32,330 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-21 16:13:32,330 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-21 16:13:32,330 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-21 16:13:32,330 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-21 16:13:32,330 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-21 16:13:32,330 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-21 16:13:32,330 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-21 16:13:32,331 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-21 16:13:32,331 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-21 16:13:32,331 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-21 16:13:32,331 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-21 16:13:32,331 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-21 16:13:32,331 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-21 16:13:32,331 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-21 16:13:32,331 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-21 16:13:32,332 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-21 16:13:32,332 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-21 16:13:32,332 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-21 16:13:32,332 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-21 16:13:32,332 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-21 16:13:32,332 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-21 16:13:32,332 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-21 16:13:32,333 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-21 16:13:32,333 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-21 16:13:32,333 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-21 16:13:32,333 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-21 16:13:32,333 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-21 16:13:32,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:13:32,334 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:13:32,334 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 16:13:32,334 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 16:13:32,334 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:13:32,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:13:32,334 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:13:32,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 16:13:32,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 16:13:32,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:13:32,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 16:13:32,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:13:32,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:13:32,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:13:32,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:13:32,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:13:33,006 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:13:33,006 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-02-21 16:13:33,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:13:33 BoogieIcfgContainer [2021-02-21 16:13:33,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:13:33,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:13:33,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:13:33,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:13:33,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:13:31" (1/3) ... [2021-02-21 16:13:33,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c6cad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:13:33, skipping insertion in model container [2021-02-21 16:13:33,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:32" (2/3) ... [2021-02-21 16:13:33,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c6cad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:13:33, skipping insertion in model container [2021-02-21 16:13:33,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:13:33" (3/3) ... [2021-02-21 16:13:33,026 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2021-02-21 16:13:33,039 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:13:33,044 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-02-21 16:13:33,063 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-02-21 16:13:33,093 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:13:33,093 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:13:33,093 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:13:33,094 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:13:33,094 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:13:33,094 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:13:33,094 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:13:33,094 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:13:33,116 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2021-02-21 16:13:33,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-02-21 16:13:33,122 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:33,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:13:33,124 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 16:13:33,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:33,131 INFO L82 PathProgramCache]: Analyzing trace with hash 2077007770, now seen corresponding path program 1 times [2021-02-21 16:13:33,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:33,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342454892] [2021-02-21 16:13:33,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:33,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:33,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:33,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:33,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:33,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:33,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:33,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:33,534 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 16:13:33,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342454892] [2021-02-21 16:13:33,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:33,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 16:13:33,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483946701] [2021-02-21 16:13:33,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 16:13:33,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:33,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 16:13:33,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:13:33,571 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 3 states. [2021-02-21 16:13:33,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:33,806 INFO L93 Difference]: Finished difference Result 112 states and 178 transitions. [2021-02-21 16:13:33,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 16:13:33,808 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2021-02-21 16:13:33,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:33,818 INFO L225 Difference]: With dead ends: 112 [2021-02-21 16:13:33,818 INFO L226 Difference]: Without dead ends: 54 [2021-02-21 16:13:33,821 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 16:13:33,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-02-21 16:13:33,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-02-21 16:13:33,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-02-21 16:13:33,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2021-02-21 16:13:33,867 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 10 [2021-02-21 16:13:33,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:33,868 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2021-02-21 16:13:33,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 16:13:33,868 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2021-02-21 16:13:33,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-02-21 16:13:33,868 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:33,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:13:33,869 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:13:33,869 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 16:13:33,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:33,870 INFO L82 PathProgramCache]: Analyzing trace with hash -55357462, now seen corresponding path program 1 times [2021-02-21 16:13:33,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:33,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004983994] [2021-02-21 16:13:33,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:33,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:33,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:33,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:33,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:13:33,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:33,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:33,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:33,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:33,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:33,959 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 16:13:33,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004983994] [2021-02-21 16:13:33,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:33,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:13:33,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924581461] [2021-02-21 16:13:33,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:13:33,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:33,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:13:33,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:13:33,963 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 4 states. [2021-02-21 16:13:34,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:34,136 INFO L93 Difference]: Finished difference Result 107 states and 130 transitions. [2021-02-21 16:13:34,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:13:34,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-02-21 16:13:34,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:34,138 INFO L225 Difference]: With dead ends: 107 [2021-02-21 16:13:34,139 INFO L226 Difference]: Without dead ends: 59 [2021-02-21 16:13:34,140 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 16:13:34,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-02-21 16:13:34,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2021-02-21 16:13:34,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-02-21 16:13:34,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2021-02-21 16:13:34,151 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 11 [2021-02-21 16:13:34,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:34,151 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2021-02-21 16:13:34,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:13:34,151 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2021-02-21 16:13:34,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-02-21 16:13:34,152 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:34,152 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:13:34,152 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:13:34,153 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 16:13:34,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:34,153 INFO L82 PathProgramCache]: Analyzing trace with hash -642428161, now seen corresponding path program 1 times [2021-02-21 16:13:34,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:34,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080696112] [2021-02-21 16:13:34,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:34,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:34,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:34,289 WARN L141 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-02-21 16:13:34,289 WARN L147 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size 4 [2021-02-21 16:13:34,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:34,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:13:34,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:34,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:34,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:34,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:34,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:34,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-21 16:13:34,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080696112] [2021-02-21 16:13:34,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:34,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:13:34,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930427178] [2021-02-21 16:13:34,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:13:34,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:34,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:13:34,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:13:34,356 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 5 states. [2021-02-21 16:13:34,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:34,574 INFO L93 Difference]: Finished difference Result 91 states and 109 transitions. [2021-02-21 16:13:34,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 16:13:34,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-02-21 16:13:34,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:34,577 INFO L225 Difference]: With dead ends: 91 [2021-02-21 16:13:34,577 INFO L226 Difference]: Without dead ends: 89 [2021-02-21 16:13:34,577 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 16:13:34,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-02-21 16:13:34,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 56. [2021-02-21 16:13:34,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-02-21 16:13:34,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2021-02-21 16:13:34,587 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 15 [2021-02-21 16:13:34,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:34,588 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2021-02-21 16:13:34,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:13:34,588 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2021-02-21 16:13:34,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-21 16:13:34,589 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:34,589 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:13:34,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 16:13:34,590 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 16:13:34,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:34,590 INFO L82 PathProgramCache]: Analyzing trace with hash -29841965, now seen corresponding path program 1 times [2021-02-21 16:13:34,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:34,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009806804] [2021-02-21 16:13:34,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:34,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:34,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:34,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:34,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 16:13:34,680 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:34,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 16:13:34,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:34,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-21 16:13:34,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:34,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:34,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:34,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:34,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:34,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-21 16:13:34,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009806804] [2021-02-21 16:13:34,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:34,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 16:13:34,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899842032] [2021-02-21 16:13:34,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 16:13:34,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:34,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 16:13:34,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:13:34,778 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 6 states. [2021-02-21 16:13:34,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:34,983 INFO L93 Difference]: Finished difference Result 97 states and 117 transitions. [2021-02-21 16:13:34,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 16:13:34,984 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2021-02-21 16:13:34,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:34,985 INFO L225 Difference]: With dead ends: 97 [2021-02-21 16:13:34,985 INFO L226 Difference]: Without dead ends: 62 [2021-02-21 16:13:34,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-21 16:13:34,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-02-21 16:13:34,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2021-02-21 16:13:34,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-21 16:13:34,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2021-02-21 16:13:34,995 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 25 [2021-02-21 16:13:34,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:34,995 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2021-02-21 16:13:34,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 16:13:34,995 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2021-02-21 16:13:34,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-21 16:13:34,996 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:34,997 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:13:34,997 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 16:13:34,997 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:13:34,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:34,998 INFO L82 PathProgramCache]: Analyzing trace with hash 779504661, now seen corresponding path program 1 times [2021-02-21 16:13:34,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:34,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246011119] [2021-02-21 16:13:34,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:13:35,040 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:13:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:13:35,076 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:13:35,110 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 16:13:35,110 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 16:13:35,111 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 16:13:35,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:13:35 BoogieIcfgContainer [2021-02-21 16:13:35,153 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:13:35,154 INFO L168 Benchmark]: Toolchain (without parser) took 3710.78 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 125.2 MB in the beginning and 134.6 MB in the end (delta: -9.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:13:35,155 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory was 123.6 MB in the beginning and 123.5 MB in the end (delta: 81.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:13:35,156 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.40 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 132.1 MB in the end (delta: -7.9 MB). Peak memory consumption was 26.8 MB. Max. memory is 8.0 GB. [2021-02-21 16:13:35,157 INFO L168 Benchmark]: Boogie Preprocessor took 90.62 ms. Allocated memory is still 151.0 MB. Free memory was 132.1 MB in the beginning and 129.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-21 16:13:35,158 INFO L168 Benchmark]: RCFGBuilder took 798.99 ms. Allocated memory is still 151.0 MB. Free memory was 129.0 MB in the beginning and 78.2 MB in the end (delta: 50.8 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. [2021-02-21 16:13:35,159 INFO L168 Benchmark]: TraceAbstraction took 2141.46 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 78.2 MB in the beginning and 134.6 MB in the end (delta: -56.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:13:35,162 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory was 123.6 MB in the beginning and 123.5 MB in the end (delta: 81.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 660.40 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 132.1 MB in the end (delta: -7.9 MB). Peak memory consumption was 26.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 90.62 ms. Allocated memory is still 151.0 MB. Free memory was 132.1 MB in the beginning and 129.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 798.99 ms. Allocated memory is still 151.0 MB. Free memory was 129.0 MB in the beginning and 78.2 MB in the end (delta: 50.8 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2141.46 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 78.2 MB in the beginning and 134.6 MB in the end (delta: -56.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1038]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = ((void*)0) [L999] head->prev = ((void*)0) [L1000] head->data = 0 [L1002] SLL* x = head; [L1003] int marked = 0; VAL [head={1:0}, malloc(sizeof(SLL))={1:0}, marked=0, x={1:0}] [L1006] COND TRUE __VERIFIER_nondet_int() || !marked [L1009] x->next = malloc(sizeof(SLL)) [L1010] EXPR x->next [L1010] x->next->prev = x [L1011] EXPR x->next [L1011] x = x->next [L1012] x->next = ((void*)0) [L1014] COND TRUE __VERIFIER_nondet_int() [L1016] marked = 1 VAL [head={1:0}, malloc(sizeof(SLL))={1:0}, malloc(sizeof(SLL))={-1:0}, marked=1, x={-1:0}] [L1019] COND TRUE \read(marked) [L1020] x->data = 1 VAL [head={1:0}, malloc(sizeof(SLL))={1:0}, malloc(sizeof(SLL))={-1:0}, marked=1, x={-1:0}] [L1006] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1025] x = head VAL [head={1:0}, malloc(sizeof(SLL))={1:0}, malloc(sizeof(SLL))={-1:0}, marked=1, x={1:0}] [L1027] COND FALSE !(!(((void*)0) != x)) VAL [head={1:0}, malloc(sizeof(SLL))={1:0}, malloc(sizeof(SLL))={-1:0}, marked=1, x={1:0}] [L1028] marked = 0 VAL [head={1:0}, malloc(sizeof(SLL))={1:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={1:0}] [L1030] EXPR x->next [L1030] x->next != ((void*)0) && x->next->data == 0 [L1030] EXPR x->next [L1030] EXPR x->next->data [L1030] x->next != ((void*)0) && x->next->data == 0 VAL [head={1:0}, malloc(sizeof(SLL))={1:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={1:0}, x->next={-1:0}, x->next={-1:0}, x->next != ((void*)0) && x->next->data == 0=0, x->next->data=1] [L1030] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1035] EXPR x->next [L1035] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1035] x->next != ((void*)0) && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, head={1:0}, malloc(sizeof(SLL))={1:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={1:0}, x->next={-1:0}, x->next != ((void*)0) && __VERIFIER_nondet_int()=1] [L1035] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1037] EXPR x->next [L1037] x = x->next [L1038] EXPR x->data VAL [head={1:0}, malloc(sizeof(SLL))={1:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}, x->data=1] [L1038] COND TRUE !(x->data != 1) [L1038] reach_error() VAL [head={1:0}, malloc(sizeof(SLL))={1:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 64 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 219 SDtfs, 170 SDslu, 149 SDs, 0 SdLazy, 350 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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, 36 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 3777 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 4/4 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...