/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:35:43,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:35:43,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:35:43,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:35:43,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:35:43,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:35:43,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:35:43,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:35:43,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:35:43,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:35:43,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:35:43,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:35:43,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:35:43,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:35:43,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:35:43,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:35:43,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:35:43,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:35:43,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:35:43,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:35:43,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:35:43,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:35:43,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:35:43,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:35:43,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:35:43,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:35:43,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:35:43,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:35:43,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:35:43,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:35:43,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:35:43,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:35:43,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:35:43,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:35:43,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:35:43,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:35:43,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:35:43,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:35:43,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:35:43,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:35:43,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:35:43,919 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:35:43,948 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:35:43,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:35:43,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:35:43,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:35:43,950 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:35:43,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:35:43,950 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:35:43,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:35:43,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:35:43,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:35:43,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:35:43,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:35:43,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:35:43,952 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:35:43,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:35:43,952 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:35:43,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:35:43,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:35:43,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:35:43,953 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:35:43,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:35:43,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:35:43,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:35:43,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:35:43,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:35:43,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:35:43,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:35:43,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:35:43,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:35:43,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:35:44,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:35:44,448 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:35:44,453 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:35:44,455 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:35:44,455 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:35:44,456 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i [2020-09-25 14:35:44,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24b62e836/419a4011e74d46e78d67f9b905cd6619/FLAG8866ca897 [2020-09-25 14:35:45,207 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:35:45,209 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i [2020-09-25 14:35:45,225 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24b62e836/419a4011e74d46e78d67f9b905cd6619/FLAG8866ca897 [2020-09-25 14:35:45,451 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24b62e836/419a4011e74d46e78d67f9b905cd6619 [2020-09-25 14:35:45,464 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:35:45,470 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:35:45,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:35:45,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:35:45,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:35:45,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:35:45" (1/1) ... [2020-09-25 14:35:45,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cfafcce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:45, skipping insertion in model container [2020-09-25 14:35:45,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:35:45" (1/1) ... [2020-09-25 14:35:45,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:35:45,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:35:46,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:35:46,078 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:35:46,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:35:46,204 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:35:46,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:46 WrapperNode [2020-09-25 14:35:46,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:35:46,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:35:46,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:35:46,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:35:46,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:46" (1/1) ... [2020-09-25 14:35:46,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:46" (1/1) ... [2020-09-25 14:35:46,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:46" (1/1) ... [2020-09-25 14:35:46,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:46" (1/1) ... [2020-09-25 14:35:46,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:46" (1/1) ... [2020-09-25 14:35:46,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:46" (1/1) ... [2020-09-25 14:35:46,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:46" (1/1) ... [2020-09-25 14:35:46,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:35:46,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:35:46,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:35:46,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:35:46,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:46" (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 [2020-09-25 14:35:46,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:35:46,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:35:46,364 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:35:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 14:35:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 14:35:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 14:35:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 14:35:46,365 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 14:35:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 14:35:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 14:35:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 14:35:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 14:35:46,366 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 14:35:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 14:35:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 14:35:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 14:35:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 14:35:46,367 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 14:35:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 14:35:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 14:35:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 14:35:46,368 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 14:35:46,369 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 14:35:46,369 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 14:35:46,369 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 14:35:46,369 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 14:35:46,369 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 14:35:46,369 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 14:35:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 14:35:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 14:35:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 14:35:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 14:35:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 14:35:46,370 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 14:35:46,371 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 14:35:46,371 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 14:35:46,371 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 14:35:46,371 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 14:35:46,371 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 14:35:46,371 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 14:35:46,372 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 14:35:46,372 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 14:35:46,372 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 14:35:46,372 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 14:35:46,372 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 14:35:46,372 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 14:35:46,373 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 14:35:46,373 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 14:35:46,373 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 14:35:46,373 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 14:35:46,373 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 14:35:46,374 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 14:35:46,374 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 14:35:46,374 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 14:35:46,374 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 14:35:46,374 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 14:35:46,374 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 14:35:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 14:35:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 14:35:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 14:35:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 14:35:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 14:35:46,375 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 14:35:46,376 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 14:35:46,376 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 14:35:46,376 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 14:35:46,376 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:35:46,376 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 14:35:46,376 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 14:35:46,377 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 14:35:46,377 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 14:35:46,377 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 14:35:46,377 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 14:35:46,377 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 14:35:46,377 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 14:35:46,378 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 14:35:46,378 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 14:35:46,378 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 14:35:46,378 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 14:35:46,378 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 14:35:46,378 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 14:35:46,379 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 14:35:46,379 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 14:35:46,379 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 14:35:46,379 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 14:35:46,379 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 14:35:46,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 14:35:46,380 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 14:35:46,380 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 14:35:46,380 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 14:35:46,380 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 14:35:46,380 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 14:35:46,380 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 14:35:46,380 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 14:35:46,381 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 14:35:46,381 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 14:35:46,381 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 14:35:46,381 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 14:35:46,381 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 14:35:46,381 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 14:35:46,382 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 14:35:46,382 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 14:35:46,382 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 14:35:46,382 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 14:35:46,382 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 14:35:46,382 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 14:35:46,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:35:46,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:35:46,383 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:35:46,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 14:35:46,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 14:35:46,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 14:35:46,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 14:35:46,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 14:35:46,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 14:35:46,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:35:46,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:35:47,031 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:35:47,032 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-09-25 14:35:47,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:35:47 BoogieIcfgContainer [2020-09-25 14:35:47,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:35:47,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:35:47,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:35:47,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:35:47,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:35:45" (1/3) ... [2020-09-25 14:35:47,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55507ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:35:47, skipping insertion in model container [2020-09-25 14:35:47,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:35:46" (2/3) ... [2020-09-25 14:35:47,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55507ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:35:47, skipping insertion in model container [2020-09-25 14:35:47,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:35:47" (3/3) ... [2020-09-25 14:35:47,062 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2020-09-25 14:35:47,075 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:35:47,086 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-09-25 14:35:47,110 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-25 14:35:47,148 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:35:47,149 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:35:47,149 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:35:47,150 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:35:47,150 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:35:47,150 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:35:47,150 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:35:47,150 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:35:47,186 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-09-25 14:35:47,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 14:35:47,206 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:47,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:35:47,209 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:47,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:47,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1234818853, now seen corresponding path program 1 times [2020-09-25 14:35:47,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:47,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144157445] [2020-09-25 14:35:47,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:47,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:47,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:47,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:47,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 14:35:47,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:35:47,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-09-25 14:35:47,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:47,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:47,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:35:47,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:35:47,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:35:47,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:35:47,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:47,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:47,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:47,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:47,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:47,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:35:47,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:47,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:47,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:47,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:47,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:47,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:47,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:35:47,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144157445] [2020-09-25 14:35:47,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:35:47,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:35:47,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199764706] [2020-09-25 14:35:47,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:35:47,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:47,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:35:47,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:35:47,944 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 6 states. [2020-09-25 14:35:48,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:35:48,400 INFO L93 Difference]: Finished difference Result 188 states and 230 transitions. [2020-09-25 14:35:48,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:35:48,402 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-09-25 14:35:48,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:35:48,417 INFO L225 Difference]: With dead ends: 188 [2020-09-25 14:35:48,418 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 14:35:48,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:35:48,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 14:35:48,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 67. [2020-09-25 14:35:48,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 14:35:48,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2020-09-25 14:35:48,478 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 17 [2020-09-25 14:35:48,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:35:48,479 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2020-09-25 14:35:48,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:35:48,479 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2020-09-25 14:35:48,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 14:35:48,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:48,480 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, 1, 1, 1] [2020-09-25 14:35:48,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:35:48,481 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:48,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:48,482 INFO L82 PathProgramCache]: Analyzing trace with hash -407334014, now seen corresponding path program 1 times [2020-09-25 14:35:48,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:48,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933843417] [2020-09-25 14:35:48,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:48,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:48,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:48,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 14:35:48,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:48,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-09-25 14:35:48,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:48,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:48,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:35:48,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 14:35:48,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:35:48,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:35:48,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:35:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:35:48,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:35:48,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:35:48,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:35:48,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:35:48,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:35:48,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:35:48,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:35:48,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:35:48,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:35:48,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:35:48,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:35:48,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:35:48,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933843417] [2020-09-25 14:35:48,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:35:48,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:35:48,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557658410] [2020-09-25 14:35:48,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:35:48,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:35:48,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:35:48,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:35:48,884 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand 6 states. [2020-09-25 14:35:49,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:35:49,115 INFO L93 Difference]: Finished difference Result 121 states and 127 transitions. [2020-09-25 14:35:49,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:35:49,116 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-09-25 14:35:49,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:35:49,118 INFO L225 Difference]: With dead ends: 121 [2020-09-25 14:35:49,118 INFO L226 Difference]: Without dead ends: 118 [2020-09-25 14:35:49,120 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 [2020-09-25 14:35:49,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-09-25 14:35:49,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 76. [2020-09-25 14:35:49,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 14:35:49,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-09-25 14:35:49,134 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 23 [2020-09-25 14:35:49,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:35:49,135 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-09-25 14:35:49,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:35:49,135 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-09-25 14:35:49,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 14:35:49,137 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:35:49,137 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:35:49,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:35:49,138 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:35:49,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:35:49,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1213824752, now seen corresponding path program 1 times [2020-09-25 14:35:49,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:35:49,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035544672] [2020-09-25 14:35:49,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:35:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 14:35:49,161 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 14:35:49,162 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 14:35:49,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:35:49,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:35:49 BoogieIcfgContainer [2020-09-25 14:35:49,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:35:49,194 INFO L168 Benchmark]: Toolchain (without parser) took 3727.59 ms. Allocated memory was 138.9 MB in the beginning and 233.8 MB in the end (delta: 94.9 MB). Free memory was 100.4 MB in the beginning and 98.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 97.3 MB. Max. memory is 7.1 GB. [2020-09-25 14:35:49,195 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 14:35:49,196 INFO L168 Benchmark]: CACSL2BoogieTranslator took 729.32 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 99.7 MB in the beginning and 167.8 MB in the end (delta: -68.1 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-09-25 14:35:49,197 INFO L168 Benchmark]: Boogie Preprocessor took 80.07 ms. Allocated memory is still 201.3 MB. Free memory was 167.8 MB in the beginning and 165.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-25 14:35:49,198 INFO L168 Benchmark]: RCFGBuilder took 759.79 ms. Allocated memory is still 201.3 MB. Free memory was 165.1 MB in the beginning and 115.6 MB in the end (delta: 49.5 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. [2020-09-25 14:35:49,199 INFO L168 Benchmark]: TraceAbstraction took 2140.29 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 114.9 MB in the beginning and 98.0 MB in the end (delta: 16.9 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. [2020-09-25 14:35:49,205 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 729.32 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 99.7 MB in the beginning and 167.8 MB in the end (delta: -68.1 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 80.07 ms. Allocated memory is still 201.3 MB. Free memory was 167.8 MB in the beginning and 165.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 759.79 ms. Allocated memory is still 201.3 MB. Free memory was 165.1 MB in the beginning and 115.6 MB in the end (delta: 49.5 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2140.29 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 114.9 MB in the beginning and 98.0 MB in the end (delta: 16.9 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1038]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L995] SLL* list = malloc(sizeof(SLL)); [L996] list->next = ((void*)0) [L997] list->colour = BLACK [L999] SLL* end = list; [L1002] COND FALSE !(__VERIFIER_nondet_int()) [L1023] end = ((void*)0) [L1024] end = list [L1027] COND FALSE !(!(((void*)0) != end)) [L1028] EXPR end->colour [L1028] COND FALSE !(!(BLACK == end->colour)) [L1030] COND TRUE ((void*)0) != end [L1032] EXPR end->colour [L1032] COND FALSE !(RED == end->colour) [L1038] EXPR end->next [L1038] COND TRUE !(end->next) [L1038] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 92 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 131 SDtfs, 342 SDslu, 230 SDs, 0 SdLazy, 286 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred 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, 2 MinimizatonAttempts, 67 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 3734 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...