/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --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 SequenceOfStatements --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=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/forester-heap/sll-circular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:10:51,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:10:51,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:10:51,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:10:51,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:10:51,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:10:51,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:10:51,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:10:51,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:10:51,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:10:51,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:10:51,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:10:51,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:10:51,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:10:51,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:10:51,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:10:51,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:10:51,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:10:51,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:10:51,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:10:51,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:10:51,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:10:51,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:10:51,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:10:51,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:10:51,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:10:51,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:10:51,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:10:51,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:10:51,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:10:51,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:10:51,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:10:51,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:10:51,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:10:51,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:10:51,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:10:51,346 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:10:51,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:10:51,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:10:51,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:10:51,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:10:51,350 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 [2020-10-29 09:10:51,404 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:10:51,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:10:51,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:10:51,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:10:51,411 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:10:51,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:10:51,412 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:10:51,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:10:51,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:10:51,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:10:51,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:10:51,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:10:51,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:10:51,415 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:10:51,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:10:51,415 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:10:51,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:10:51,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:10:51,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:10:51,416 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:10:51,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:10:51,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:10:51,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:10:51,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:10:51,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:10:51,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:10:51,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:10:51,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:10:51,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:10:51,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:10:51,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:10:51,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:10:51,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:10:51,925 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:10:51,926 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:10:51,927 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-circular-2.i [2020-10-29 09:10:52,016 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/917491b83/20d190bb877043ebb07dde7f781c0f51/FLAG81d71bcef [2020-10-29 09:10:52,771 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:10:52,772 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-circular-2.i [2020-10-29 09:10:52,796 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/917491b83/20d190bb877043ebb07dde7f781c0f51/FLAG81d71bcef [2020-10-29 09:10:52,821 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/917491b83/20d190bb877043ebb07dde7f781c0f51 [2020-10-29 09:10:52,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:10:52,836 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:10:52,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:10:52,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:10:52,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:10:52,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:10:52" (1/1) ... [2020-10-29 09:10:52,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c7ea9d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:52, skipping insertion in model container [2020-10-29 09:10:52,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:10:52" (1/1) ... [2020-10-29 09:10:52,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:10:52,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:10:53,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:10:53,361 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:10:53,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:10:53,481 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:10:53,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:53 WrapperNode [2020-10-29 09:10:53,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:10:53,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:10:53,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:10:53,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:10:53,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:53" (1/1) ... [2020-10-29 09:10:53,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:53" (1/1) ... [2020-10-29 09:10:53,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:53" (1/1) ... [2020-10-29 09:10:53,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:53" (1/1) ... [2020-10-29 09:10:53,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:53" (1/1) ... [2020-10-29 09:10:53,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:53" (1/1) ... [2020-10-29 09:10:53,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:53" (1/1) ... [2020-10-29 09:10:53,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:10:53,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:10:53,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:10:53,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:10:53,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:53" (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 [2020-10-29 09:10:53,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:10:53,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:10:53,694 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:10:53,694 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:10:53,695 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-29 09:10:53,695 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-29 09:10:53,695 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-29 09:10:53,695 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-29 09:10:53,696 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-29 09:10:53,696 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-29 09:10:53,696 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-29 09:10:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-29 09:10:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-29 09:10:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-29 09:10:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-29 09:10:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-29 09:10:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-29 09:10:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-29 09:10:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-29 09:10:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-29 09:10:53,700 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-29 09:10:53,700 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-29 09:10:53,700 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-29 09:10:53,700 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-29 09:10:53,700 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-29 09:10:53,700 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-29 09:10:53,701 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-29 09:10:53,701 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-29 09:10:53,701 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-29 09:10:53,701 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-29 09:10:53,701 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-29 09:10:53,701 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-29 09:10:53,702 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-29 09:10:53,702 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-29 09:10:53,702 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-29 09:10:53,702 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-29 09:10:53,702 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-29 09:10:53,702 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-29 09:10:53,702 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-29 09:10:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-29 09:10:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-29 09:10:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-29 09:10:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-29 09:10:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-29 09:10:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-29 09:10:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-29 09:10:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-29 09:10:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-29 09:10:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-29 09:10:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-29 09:10:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-29 09:10:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-29 09:10:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-29 09:10:53,706 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-29 09:10:53,707 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:10:53,707 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 09:10:53,707 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 09:10:53,707 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 09:10:53,707 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-29 09:10:53,707 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-29 09:10:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 09:10:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-29 09:10:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-29 09:10:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:10:53,708 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-29 09:10:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-29 09:10:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-29 09:10:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 09:10:53,709 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-29 09:10:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-29 09:10:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-29 09:10:53,710 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-29 09:10:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-29 09:10:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-29 09:10:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-29 09:10:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-29 09:10:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-29 09:10:53,713 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-29 09:10:53,713 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-29 09:10:53,713 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-29 09:10:53,713 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-29 09:10:53,714 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-29 09:10:53,714 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-29 09:10:53,714 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-29 09:10:53,714 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-29 09:10:53,715 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-29 09:10:53,715 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-29 09:10:53,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-29 09:10:53,715 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-29 09:10:53,715 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-29 09:10:53,715 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-29 09:10:53,715 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-29 09:10:53,716 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-29 09:10:53,716 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-29 09:10:53,716 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-29 09:10:53,716 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-29 09:10:53,716 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-29 09:10:53,716 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-29 09:10:53,717 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-29 09:10:53,717 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-29 09:10:53,717 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-29 09:10:53,717 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-29 09:10:53,717 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-29 09:10:53,717 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-29 09:10:53,717 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-29 09:10:53,718 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-29 09:10:53,718 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-29 09:10:53,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 09:10:53,718 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:10:53,718 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:10:53,718 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:10:53,719 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:10:53,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:10:53,719 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:10:53,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 09:10:53,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:10:53,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:10:53,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:10:53,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:10:53,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:10:53,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:10:53,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:10:53,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:10:54,533 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:10:54,533 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-29 09:10:54,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:10:54 BoogieIcfgContainer [2020-10-29 09:10:54,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:10:54,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:10:54,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:10:54,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:10:54,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:10:52" (1/3) ... [2020-10-29 09:10:54,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2497374c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:10:54, skipping insertion in model container [2020-10-29 09:10:54,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:10:53" (2/3) ... [2020-10-29 09:10:54,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2497374c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:10:54, skipping insertion in model container [2020-10-29 09:10:54,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:10:54" (3/3) ... [2020-10-29 09:10:54,545 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-circular-2.i [2020-10-29 09:10:54,557 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:10:54,563 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:10:54,577 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:10:54,603 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:10:54,604 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:10:54,604 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:10:54,604 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:10:54,604 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:10:54,605 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:10:54,605 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:10:54,605 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:10:54,623 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-10-29 09:10:54,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-29 09:10:54,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:54,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:54,631 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:54,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:54,637 INFO L82 PathProgramCache]: Analyzing trace with hash -323057978, now seen corresponding path program 1 times [2020-10-29 09:10:54,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:54,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281005461] [2020-10-29 09:10:54,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:54,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:54,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:55,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:55,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:10:55,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:10:55,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-10-29 09:10:55,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:55,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:55,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:10:55,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:55,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 09:10:55,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 09:10:55,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:55,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:55,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:55,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:55,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:55,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:10:55,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:55,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:55,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:55,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:55,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:55,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:55,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:55,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281005461] [2020-10-29 09:10:55,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:10:55,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 09:10:55,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675847141] [2020-10-29 09:10:55,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:10:55,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:55,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:10:55,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:10:55,483 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 5 states. [2020-10-29 09:10:55,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:55,720 INFO L93 Difference]: Finished difference Result 88 states and 142 transitions. [2020-10-29 09:10:55,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:10:55,722 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-29 09:10:55,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:55,731 INFO L225 Difference]: With dead ends: 88 [2020-10-29 09:10:55,731 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 09:10:55,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:10:55,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 09:10:55,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2020-10-29 09:10:55,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 09:10:55,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2020-10-29 09:10:55,781 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 12 [2020-10-29 09:10:55,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:55,781 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2020-10-29 09:10:55,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:10:55,782 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2020-10-29 09:10:55,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-29 09:10:55,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:55,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:55,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:10:55,783 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:55,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:55,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1634639351, now seen corresponding path program 1 times [2020-10-29 09:10:55,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:55,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886143228] [2020-10-29 09:10:55,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:55,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:55,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:56,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:56,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 09:10:56,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:10:56,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-29 09:10:56,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:56,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:56,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:10:56,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:56,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:10:56,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:56,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:56,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:56,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:56,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:56,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:56,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 09:10:56,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:56,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:56,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:56,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:56,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:56,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:56,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:56,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886143228] [2020-10-29 09:10:56,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:10:56,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:10:56,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352755894] [2020-10-29 09:10:56,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:10:56,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:56,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:10:56,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:10:56,391 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 6 states. [2020-10-29 09:10:56,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:56,695 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2020-10-29 09:10:56,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:10:56,696 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-29 09:10:56,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:56,697 INFO L225 Difference]: With dead ends: 56 [2020-10-29 09:10:56,698 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 09:10:56,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:10:56,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 09:10:56,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 41. [2020-10-29 09:10:56,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 09:10:56,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2020-10-29 09:10:56,732 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 16 [2020-10-29 09:10:56,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:56,733 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2020-10-29 09:10:56,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:10:56,733 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2020-10-29 09:10:56,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-29 09:10:56,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:56,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:56,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:10:56,741 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:56,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:56,742 INFO L82 PathProgramCache]: Analyzing trace with hash -94271402, now seen corresponding path program 1 times [2020-10-29 09:10:56,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:56,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142563629] [2020-10-29 09:10:56,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:56,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:56,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:56,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:56,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 09:10:56,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:10:56,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 09:10:56,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:56,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:56,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:10:56,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:10:56,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 09:10:56,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:10:57,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:10:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:10:57,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:10:57,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:10:57,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:10:57,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:10:57,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:10:57,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:10:57,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:10:57,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:10:57,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:10:57,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:10:57,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:10:57,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:10:57,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142563629] [2020-10-29 09:10:57,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:10:57,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:10:57,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310990988] [2020-10-29 09:10:57,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:10:57,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:10:57,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:10:57,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:10:57,098 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand 6 states. [2020-10-29 09:10:57,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:10:57,365 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2020-10-29 09:10:57,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:10:57,366 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-29 09:10:57,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:10:57,367 INFO L225 Difference]: With dead ends: 63 [2020-10-29 09:10:57,367 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 09:10:57,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:10:57,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 09:10:57,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-29 09:10:57,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 09:10:57,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2020-10-29 09:10:57,379 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 19 [2020-10-29 09:10:57,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:10:57,379 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2020-10-29 09:10:57,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:10:57,379 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2020-10-29 09:10:57,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-29 09:10:57,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:10:57,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:10:57,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:10:57,381 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:10:57,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:10:57,382 INFO L82 PathProgramCache]: Analyzing trace with hash -96118444, now seen corresponding path program 1 times [2020-10-29 09:10:57,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:10:57,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402032359] [2020-10-29 09:10:57,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:10:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:10:57,405 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:10:57,406 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:10:57,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:10:57,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:10:57 BoogieIcfgContainer [2020-10-29 09:10:57,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:10:57,432 INFO L168 Benchmark]: Toolchain (without parser) took 4602.27 ms. Allocated memory was 125.8 MB in the beginning and 166.7 MB in the end (delta: 40.9 MB). Free memory was 99.3 MB in the beginning and 93.7 MB in the end (delta: 5.7 MB). Peak memory consumption was 47.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:10:57,433 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:10:57,434 INFO L168 Benchmark]: CACSL2BoogieTranslator took 642.33 ms. Allocated memory is still 125.8 MB. Free memory was 98.8 MB in the beginning and 76.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:10:57,434 INFO L168 Benchmark]: Boogie Preprocessor took 89.80 ms. Allocated memory is still 125.8 MB. Free memory was 76.9 MB in the beginning and 74.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:10:57,435 INFO L168 Benchmark]: RCFGBuilder took 961.67 ms. Allocated memory was 125.8 MB in the beginning and 166.7 MB in the end (delta: 40.9 MB). Free memory was 74.2 MB in the beginning and 109.6 MB in the end (delta: -35.4 MB). Peak memory consumption was 8.2 MB. Max. memory is 8.0 GB. [2020-10-29 09:10:57,436 INFO L168 Benchmark]: TraceAbstraction took 2891.82 ms. Allocated memory is still 166.7 MB. Free memory was 109.6 MB in the beginning and 93.7 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. [2020-10-29 09:10:57,440 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 642.33 ms. Allocated memory is still 125.8 MB. Free memory was 98.8 MB in the beginning and 76.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 89.80 ms. Allocated memory is still 125.8 MB. Free memory was 76.9 MB in the beginning and 74.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 961.67 ms. Allocated memory was 125.8 MB in the beginning and 166.7 MB in the end (delta: 40.9 MB). Free memory was 74.2 MB in the beginning and 109.6 MB in the end (delta: -35.4 MB). Peak memory consumption was 8.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2891.82 ms. Allocated memory is still 166.7 MB. Free memory was 109.6 MB in the beginning and 93.7 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 985]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L996] SLL* head = malloc(sizeof(SLL)); [L997] head->next = head [L998] head->data = 0 [L1000] SLL* x = head; [L1001] int state = 1; [L1004] COND FALSE !(__VERIFIER_nondet_int()) [L1025] x->data = state [L1027] EXPR head->next [L1027] x = head->next [L1028] COND FALSE !(!(((void*)0) != x)) [L1030] EXPR x->data [L1030] COND TRUE x->data != 0 [L1032] EXPR x->next [L1032] EXPR x->next->data [L1032] EXPR x->next->data != 0 && x->data > x->next->data [L1032] EXPR x->data [L1032] EXPR x->next [L1032] EXPR x->next->data [L1032] EXPR x->next->data != 0 && x->data > x->next->data [L1032] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1032] CALL reach_error() [L985] COND FALSE !(0) [L985] __assert_fail ("0", "sll-circular-2.c", 14, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 85 SDslu, 177 SDs, 0 SdLazy, 265 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 21 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 6667 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...