/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 22:07:33,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 22:07:33,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 22:07:33,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 22:07:33,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 22:07:33,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 22:07:33,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 22:07:33,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 22:07:33,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 22:07:33,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 22:07:33,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 22:07:33,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 22:07:33,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 22:07:33,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 22:07:33,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 22:07:33,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 22:07:33,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 22:07:33,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 22:07:33,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 22:07:33,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 22:07:33,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 22:07:33,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 22:07:33,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 22:07:33,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 22:07:33,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 22:07:33,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 22:07:33,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 22:07:33,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 22:07:33,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 22:07:33,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 22:07:33,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 22:07:33,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 22:07:33,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 22:07:33,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 22:07:33,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 22:07:33,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 22:07:33,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 22:07:33,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 22:07:33,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 22:07:33,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 22:07:33,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 22:07:33,219 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 22:07:33,231 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 22:07:33,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 22:07:33,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 22:07:33,233 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 22:07:33,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 22:07:33,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 22:07:33,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 22:07:33,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 22:07:33,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 22:07:33,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 22:07:33,234 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 22:07:33,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 22:07:33,235 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 22:07:33,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 22:07:33,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 22:07:33,235 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 22:07:33,236 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 22:07:33,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 22:07:33,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 22:07:33,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 22:07:33,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 22:07:33,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 22:07:33,237 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-09-04 22:07:33,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 22:07:33,742 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 22:07:33,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 22:07:33,748 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 22:07:33,749 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 22:07:33,750 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-09-04 22:07:33,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/150dde55e/e269ed4770214451824fca4b86974657/FLAG96bfb5287 [2020-09-04 22:07:34,463 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 22:07:34,464 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-09-04 22:07:34,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/150dde55e/e269ed4770214451824fca4b86974657/FLAG96bfb5287 [2020-09-04 22:07:34,733 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/150dde55e/e269ed4770214451824fca4b86974657 [2020-09-04 22:07:34,747 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 22:07:34,749 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 22:07:34,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 22:07:34,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 22:07:34,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 22:07:34,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 10:07:34" (1/1) ... [2020-09-04 22:07:34,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d644e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:34, skipping insertion in model container [2020-09-04 22:07:34,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 10:07:34" (1/1) ... [2020-09-04 22:07:34,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 22:07:34,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 22:07:35,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 22:07:35,329 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 22:07:35,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 22:07:35,479 INFO L208 MainTranslator]: Completed translation [2020-09-04 22:07:35,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:35 WrapperNode [2020-09-04 22:07:35,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 22:07:35,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 22:07:35,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 22:07:35,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 22:07:35,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:35" (1/1) ... [2020-09-04 22:07:35,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:35" (1/1) ... [2020-09-04 22:07:35,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:35" (1/1) ... [2020-09-04 22:07:35,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:35" (1/1) ... [2020-09-04 22:07:35,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:35" (1/1) ... [2020-09-04 22:07:35,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:35" (1/1) ... [2020-09-04 22:07:35,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:35" (1/1) ... [2020-09-04 22:07:35,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 22:07:35,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 22:07:35,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 22:07:35,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 22:07:35,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 22:07:35,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 22:07:35,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 22:07:35,665 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 22:07:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-04 22:07:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-04 22:07:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-04 22:07:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-04 22:07:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-04 22:07:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-04 22:07:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-04 22:07:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-04 22:07:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-04 22:07:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-04 22:07:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-04 22:07:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-04 22:07:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-04 22:07:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-04 22:07:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-04 22:07:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-04 22:07:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-04 22:07:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-04 22:07:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-04 22:07:35,674 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-04 22:07:35,674 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-04 22:07:35,674 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-04 22:07:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-04 22:07:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-04 22:07:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-04 22:07:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-04 22:07:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-04 22:07:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-04 22:07:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-04 22:07:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-04 22:07:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-04 22:07:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-04 22:07:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-04 22:07:35,677 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-04 22:07:35,677 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-04 22:07:35,677 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-04 22:07:35,677 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-04 22:07:35,677 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-04 22:07:35,677 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-04 22:07:35,678 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-04 22:07:35,678 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-04 22:07:35,678 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-04 22:07:35,678 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-04 22:07:35,678 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-04 22:07:35,679 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-04 22:07:35,679 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-04 22:07:35,679 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-04 22:07:35,679 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-04 22:07:35,679 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-04 22:07:35,679 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-04 22:07:35,680 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 22:07:35,680 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-04 22:07:35,680 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-04 22:07:35,680 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 22:07:35,680 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-04 22:07:35,680 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-04 22:07:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-04 22:07:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-04 22:07:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-04 22:07:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 22:07:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-04 22:07:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-04 22:07:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-04 22:07:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-04 22:07:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-04 22:07:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-04 22:07:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-04 22:07:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-04 22:07:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-04 22:07:35,683 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-04 22:07:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-04 22:07:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-04 22:07:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-04 22:07:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-04 22:07:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-04 22:07:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-04 22:07:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-04 22:07:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-04 22:07:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-04 22:07:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-04 22:07:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-04 22:07:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-04 22:07:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-04 22:07:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-04 22:07:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-04 22:07:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-04 22:07:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-04 22:07:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-04 22:07:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-04 22:07:35,689 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-04 22:07:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-04 22:07:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-04 22:07:35,690 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-04 22:07:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-04 22:07:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-04 22:07:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-04 22:07:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-04 22:07:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-04 22:07:35,691 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-04 22:07:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-04 22:07:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-04 22:07:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-04 22:07:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-04 22:07:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 22:07:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 22:07:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 22:07:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 22:07:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 22:07:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 22:07:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 22:07:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 22:07:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 22:07:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 22:07:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 22:07:36,386 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 22:07:36,386 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-09-04 22:07:36,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 10:07:36 BoogieIcfgContainer [2020-09-04 22:07:36,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 22:07:36,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 22:07:36,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 22:07:36,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 22:07:36,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 10:07:34" (1/3) ... [2020-09-04 22:07:36,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b066757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 10:07:36, skipping insertion in model container [2020-09-04 22:07:36,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:35" (2/3) ... [2020-09-04 22:07:36,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b066757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 10:07:36, skipping insertion in model container [2020-09-04 22:07:36,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 10:07:36" (3/3) ... [2020-09-04 22:07:36,403 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2020-09-04 22:07:36,416 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 22:07:36,427 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-09-04 22:07:36,450 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-04 22:07:36,481 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 22:07:36,482 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 22:07:36,482 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 22:07:36,482 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 22:07:36,482 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 22:07:36,483 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 22:07:36,483 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 22:07:36,483 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 22:07:36,507 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-09-04 22:07:36,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-04 22:07:36,520 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:36,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:36,522 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:07:36,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:36,531 INFO L82 PathProgramCache]: Analyzing trace with hash 815166367, now seen corresponding path program 1 times [2020-09-04 22:07:36,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:36,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857394179] [2020-09-04 22:07:36,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:36,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:36,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:36,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857394179] [2020-09-04 22:07:36,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:36,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 22:07:36,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476505871] [2020-09-04 22:07:36,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 22:07:36,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:36,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 22:07:36,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 22:07:36,844 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 3 states. [2020-09-04 22:07:37,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:37,231 INFO L93 Difference]: Finished difference Result 277 states and 343 transitions. [2020-09-04 22:07:37,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 22:07:37,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-09-04 22:07:37,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:37,248 INFO L225 Difference]: With dead ends: 277 [2020-09-04 22:07:37,248 INFO L226 Difference]: Without dead ends: 144 [2020-09-04 22:07:37,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 22:07:37,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-04 22:07:37,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-09-04 22:07:37,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-04 22:07:37,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 154 transitions. [2020-09-04 22:07:37,319 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 154 transitions. Word has length 18 [2020-09-04 22:07:37,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:37,320 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 154 transitions. [2020-09-04 22:07:37,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 22:07:37,320 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 154 transitions. [2020-09-04 22:07:37,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-04 22:07:37,321 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:37,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:37,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 22:07:37,322 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:07:37,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:37,322 INFO L82 PathProgramCache]: Analyzing trace with hash 626661666, now seen corresponding path program 1 times [2020-09-04 22:07:37,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:37,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218288939] [2020-09-04 22:07:37,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:37,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:37,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:37,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218288939] [2020-09-04 22:07:37,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:37,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 22:07:37,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350964727] [2020-09-04 22:07:37,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 22:07:37,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:37,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 22:07:37,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 22:07:37,417 INFO L87 Difference]: Start difference. First operand 144 states and 154 transitions. Second operand 4 states. [2020-09-04 22:07:37,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:37,684 INFO L93 Difference]: Finished difference Result 295 states and 318 transitions. [2020-09-04 22:07:37,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 22:07:37,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-09-04 22:07:37,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:37,687 INFO L225 Difference]: With dead ends: 295 [2020-09-04 22:07:37,687 INFO L226 Difference]: Without dead ends: 165 [2020-09-04 22:07:37,690 INFO L675 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 [2020-09-04 22:07:37,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-09-04 22:07:37,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 160. [2020-09-04 22:07:37,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-04 22:07:37,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 171 transitions. [2020-09-04 22:07:37,712 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 171 transitions. Word has length 20 [2020-09-04 22:07:37,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:37,712 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 171 transitions. [2020-09-04 22:07:37,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 22:07:37,713 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions. [2020-09-04 22:07:37,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-04 22:07:37,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:37,714 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:37,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 22:07:37,715 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:07:37,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:37,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1840738898, now seen corresponding path program 1 times [2020-09-04 22:07:37,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:37,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975997926] [2020-09-04 22:07:37,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:37,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:37,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 22:07:37,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975997926] [2020-09-04 22:07:37,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:37,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 22:07:37,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563238483] [2020-09-04 22:07:37,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 22:07:37,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:37,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 22:07:37,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 22:07:37,924 INFO L87 Difference]: Start difference. First operand 160 states and 171 transitions. Second operand 6 states. [2020-09-04 22:07:38,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:38,316 INFO L93 Difference]: Finished difference Result 262 states and 280 transitions. [2020-09-04 22:07:38,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 22:07:38,317 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-04 22:07:38,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:38,320 INFO L225 Difference]: With dead ends: 262 [2020-09-04 22:07:38,320 INFO L226 Difference]: Without dead ends: 260 [2020-09-04 22:07:38,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-04 22:07:38,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-09-04 22:07:38,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 158. [2020-09-04 22:07:38,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-04 22:07:38,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 169 transitions. [2020-09-04 22:07:38,366 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 169 transitions. Word has length 38 [2020-09-04 22:07:38,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:38,366 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 169 transitions. [2020-09-04 22:07:38,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 22:07:38,366 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 169 transitions. [2020-09-04 22:07:38,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-04 22:07:38,372 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:38,372 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:38,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 22:07:38,374 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:07:38,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:38,376 INFO L82 PathProgramCache]: Analyzing trace with hash 24683595, now seen corresponding path program 1 times [2020-09-04 22:07:38,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:38,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246802395] [2020-09-04 22:07:38,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:38,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:38,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 22:07:38,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246802395] [2020-09-04 22:07:38,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:38,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 22:07:38,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683682566] [2020-09-04 22:07:38,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 22:07:38,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:38,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 22:07:38,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 22:07:38,487 INFO L87 Difference]: Start difference. First operand 158 states and 169 transitions. Second operand 4 states. [2020-09-04 22:07:38,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:38,702 INFO L93 Difference]: Finished difference Result 244 states and 261 transitions. [2020-09-04 22:07:38,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 22:07:38,703 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-09-04 22:07:38,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:38,704 INFO L225 Difference]: With dead ends: 244 [2020-09-04 22:07:38,704 INFO L226 Difference]: Without dead ends: 159 [2020-09-04 22:07:38,705 INFO L675 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 [2020-09-04 22:07:38,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-09-04 22:07:38,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2020-09-04 22:07:38,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-04 22:07:38,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 170 transitions. [2020-09-04 22:07:38,724 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 170 transitions. Word has length 61 [2020-09-04 22:07:38,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:38,725 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 170 transitions. [2020-09-04 22:07:38,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 22:07:38,725 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 170 transitions. [2020-09-04 22:07:38,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-04 22:07:38,727 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:38,727 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:38,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 22:07:38,727 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:07:38,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:38,728 INFO L82 PathProgramCache]: Analyzing trace with hash -158274674, now seen corresponding path program 1 times [2020-09-04 22:07:38,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:38,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121151102] [2020-09-04 22:07:38,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:38,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:38,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:38,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 22:07:38,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121151102] [2020-09-04 22:07:38,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:38,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 22:07:38,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366559751] [2020-09-04 22:07:38,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 22:07:38,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:38,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 22:07:38,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-04 22:07:38,882 INFO L87 Difference]: Start difference. First operand 159 states and 170 transitions. Second operand 8 states. [2020-09-04 22:07:39,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:39,310 INFO L93 Difference]: Finished difference Result 271 states and 289 transitions. [2020-09-04 22:07:39,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 22:07:39,310 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-09-04 22:07:39,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:39,312 INFO L225 Difference]: With dead ends: 271 [2020-09-04 22:07:39,312 INFO L226 Difference]: Without dead ends: 185 [2020-09-04 22:07:39,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-09-04 22:07:39,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-04 22:07:39,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 167. [2020-09-04 22:07:39,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-04 22:07:39,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 179 transitions. [2020-09-04 22:07:39,355 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 179 transitions. Word has length 63 [2020-09-04 22:07:39,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:39,356 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 179 transitions. [2020-09-04 22:07:39,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 22:07:39,356 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 179 transitions. [2020-09-04 22:07:39,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-04 22:07:39,361 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:39,361 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:39,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 22:07:39,362 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:07:39,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:39,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1072824646, now seen corresponding path program 1 times [2020-09-04 22:07:39,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:39,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636616697] [2020-09-04 22:07:39,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 22:07:39,433 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 22:07:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 22:07:39,481 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 22:07:39,539 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 22:07:39,539 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 22:07:39,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 22:07:39,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 10:07:39 BoogieIcfgContainer [2020-09-04 22:07:39,617 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 22:07:39,621 INFO L168 Benchmark]: Toolchain (without parser) took 4871.37 ms. Allocated memory was 142.1 MB in the beginning and 244.3 MB in the end (delta: 102.2 MB). Free memory was 104.2 MB in the beginning and 129.4 MB in the end (delta: -25.2 MB). Peak memory consumption was 77.1 MB. Max. memory is 7.1 GB. [2020-09-04 22:07:39,622 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 142.1 MB. Free memory was 124.6 MB in the beginning and 124.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 22:07:39,624 INFO L168 Benchmark]: CACSL2BoogieTranslator took 730.19 ms. Allocated memory was 142.1 MB in the beginning and 204.5 MB in the end (delta: 62.4 MB). Free memory was 104.0 MB in the beginning and 171.1 MB in the end (delta: -67.1 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2020-09-04 22:07:39,624 INFO L168 Benchmark]: Boogie Preprocessor took 99.32 ms. Allocated memory is still 204.5 MB. Free memory was 171.1 MB in the beginning and 167.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-09-04 22:07:39,625 INFO L168 Benchmark]: RCFGBuilder took 812.82 ms. Allocated memory is still 204.5 MB. Free memory was 167.9 MB in the beginning and 107.0 MB in the end (delta: 60.9 MB). Peak memory consumption was 60.9 MB. Max. memory is 7.1 GB. [2020-09-04 22:07:39,626 INFO L168 Benchmark]: TraceAbstraction took 3223.30 ms. Allocated memory was 204.5 MB in the beginning and 244.3 MB in the end (delta: 39.8 MB). Free memory was 106.4 MB in the beginning and 129.4 MB in the end (delta: -23.0 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2020-09-04 22:07:39,634 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 142.1 MB. Free memory was 124.6 MB in the beginning and 124.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 730.19 ms. Allocated memory was 142.1 MB in the beginning and 204.5 MB in the end (delta: 62.4 MB). Free memory was 104.0 MB in the beginning and 171.1 MB in the end (delta: -67.1 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.32 ms. Allocated memory is still 204.5 MB. Free memory was 171.1 MB in the beginning and 167.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 812.82 ms. Allocated memory is still 204.5 MB. Free memory was 167.9 MB in the beginning and 107.0 MB in the end (delta: 60.9 MB). Peak memory consumption was 60.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3223.30 ms. Allocated memory was 204.5 MB in the beginning and 244.3 MB in the end (delta: 39.8 MB). Free memory was 106.4 MB in the beginning and 129.4 MB in the end (delta: -23.0 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1027]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L987] head->next = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L988] head->prev = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L989] head->data = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L991] SLL* x = head; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L992] int marked = 0; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}] [L995] COND TRUE __VERIFIER_nondet_int() || !marked VAL [__VERIFIER_nondet_int()=1, head={-1:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}] [L998] x->next = malloc(sizeof(SLL)) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}] [L999] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}, x->next={-2:0}] [L999] x->next->prev = x VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}] [L1000] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}] [L1000] x = x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-2:0}, x->next={-2:0}] [L1001] x->next = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-2:0}] [L1003] COND TRUE __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-2:0}] [L1005] marked = 1 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=1, x={-2:0}] [L1008] COND TRUE \read(marked) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=1, x={-2:0}] [L1009] x->data = 1 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=1, x={-2:0}] [L995] COND FALSE !(__VERIFIER_nondet_int() || !marked) VAL [__VERIFIER_nondet_int()=0, head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=1, x={-2:0}] [L1014] x = head VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=1, x={-1:0}] [L1016] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=1, x={-1:0}] [L1017] marked = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}] [L1019] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}] [L1019] x->next != ((void*)0) && x->next->data == 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next != ((void*)0) && x->next->data == 0=1] [L1019] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next={-2:0}, x->next != ((void*)0) && x->next->data == 0=1] [L1019] EXPR x->next->data VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next={-2:0}, x->next != ((void*)0) && x->next->data == 0=1, x->next->data=1] [L1019] x->next != ((void*)0) && x->next->data == 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next={-2:0}, x->next != ((void*)0) && x->next->data == 0=0, x->next->data=1] [L1019] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next={-2:0}, x->next != ((void*)0) && x->next->data == 0=0, x->next->data=1] [L1024] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}] [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next != ((void*)0) && __VERIFIER_nondet_int()=1] [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next != ((void*)0) && __VERIFIER_nondet_int()=1] [L1024] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next != ((void*)0) && __VERIFIER_nondet_int()=1] [L1026] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}, x->next={-2:0}] [L1026] x = x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-2:0}, x->next={-2:0}] [L1027] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-2:0}, x->data=1] [L1027] COND TRUE !(x->data != 1) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-2:0}, x->data=1] [L1027] __VERIFIER_error() VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 156 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.0s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 729 SDtfs, 764 SDslu, 806 SDs, 0 SdLazy, 995 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=167occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 125 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 266 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 195 ConstructedInterpolants, 0 QuantifiedInterpolants, 22075 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 6/6 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...