/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=WIDEST --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-circular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:15:10,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:15:10,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:15:10,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:15:10,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:15:10,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:15:10,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:15:10,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:15:10,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:15:10,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:15:10,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:15:10,938 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:15:10,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:15:10,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:15:10,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:15:10,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:15:10,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:15:10,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:15:10,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:15:10,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:15:10,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:15:10,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:15:10,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:15:10,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:15:10,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:15:10,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:15:10,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:15:10,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:15:10,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:15:10,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:15:10,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:15:10,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:15:10,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:15:10,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:15:10,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:15:10,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:15:10,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:15:10,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:15:10,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:15:10,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:15:10,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:15:10,983 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 03:15:11,043 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:15:11,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:15:11,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:15:11,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:15:11,047 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:15:11,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:15:11,048 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:15:11,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:15:11,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:15:11,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:15:11,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:15:11,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:15:11,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:15:11,053 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:15:11,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:15:11,053 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:15:11,053 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:15:11,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:15:11,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:15:11,054 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:15:11,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:15:11,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:15:11,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:15:11,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:15:11,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:15:11,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:15:11,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:15:11,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:15:11,057 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:15:11,057 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:15:11,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:15:11,621 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:15:11,625 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:15:11,627 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:15:11,628 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:15:11,629 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-circular-2.i [2020-09-25 03:15:11,724 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b29aa156d/b13084fe5a4641a4acbc294fd39ec3ee/FLAG2acecd4e6 [2020-09-25 03:15:12,352 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:15:12,353 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-circular-2.i [2020-09-25 03:15:12,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b29aa156d/b13084fe5a4641a4acbc294fd39ec3ee/FLAG2acecd4e6 [2020-09-25 03:15:12,607 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b29aa156d/b13084fe5a4641a4acbc294fd39ec3ee [2020-09-25 03:15:12,621 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:15:12,627 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:15:12,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:15:12,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:15:12,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:15:12,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:15:12" (1/1) ... [2020-09-25 03:15:12,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@535f0987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:12, skipping insertion in model container [2020-09-25 03:15:12,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:15:12" (1/1) ... [2020-09-25 03:15:12,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:15:12,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:15:13,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:15:13,276 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:15:13,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:15:13,392 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:15:13,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:13 WrapperNode [2020-09-25 03:15:13,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:15:13,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:15:13,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:15:13,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:15:13,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:13" (1/1) ... [2020-09-25 03:15:13,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:13" (1/1) ... [2020-09-25 03:15:13,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:13" (1/1) ... [2020-09-25 03:15:13,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:13" (1/1) ... [2020-09-25 03:15:13,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:13" (1/1) ... [2020-09-25 03:15:13,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:13" (1/1) ... [2020-09-25 03:15:13,457 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:13" (1/1) ... [2020-09-25 03:15:13,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:15:13,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:15:13,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:15:13,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:15:13,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:13" (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 03:15:13,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:15:13,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:15:13,545 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:15:13,545 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 03:15:13,545 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 03:15:13,545 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 03:15:13,545 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 03:15:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 03:15:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 03:15:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 03:15:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 03:15:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 03:15:13,547 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 03:15:13,547 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 03:15:13,547 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 03:15:13,547 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 03:15:13,547 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 03:15:13,548 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 03:15:13,548 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 03:15:13,548 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 03:15:13,549 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 03:15:13,549 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 03:15:13,550 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 03:15:13,550 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 03:15:13,552 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 03:15:13,552 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 03:15:13,553 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 03:15:13,553 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 03:15:13,553 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 03:15:13,554 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 03:15:13,554 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 03:15:13,554 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 03:15:13,554 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 03:15:13,554 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 03:15:13,555 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 03:15:13,555 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 03:15:13,555 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 03:15:13,555 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 03:15:13,555 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 03:15:13,555 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 03:15:13,557 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 03:15:13,557 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 03:15:13,557 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 03:15:13,558 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 03:15:13,558 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 03:15:13,559 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 03:15:13,559 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 03:15:13,559 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 03:15:13,559 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 03:15:13,559 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 03:15:13,560 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 03:15:13,560 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 03:15:13,560 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 03:15:13,560 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 03:15:13,560 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 03:15:13,561 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 03:15:13,561 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 03:15:13,561 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 03:15:13,561 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 03:15:13,561 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 03:15:13,561 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 03:15:13,561 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 03:15:13,561 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 03:15:13,561 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 03:15:13,561 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 03:15:13,562 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 03:15:13,562 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 03:15:13,562 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 03:15:13,563 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 03:15:13,563 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 03:15:13,563 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 03:15:13,564 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 03:15:13,565 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 03:15:13,566 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 03:15:13,566 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 03:15:13,566 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 03:15:13,566 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 03:15:13,567 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 03:15:13,567 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 03:15:13,567 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 03:15:13,567 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 03:15:13,567 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 03:15:13,567 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 03:15:13,568 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 03:15:13,568 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 03:15:13,568 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 03:15:13,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 03:15:13,568 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 03:15:13,568 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 03:15:13,568 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 03:15:13,568 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 03:15:13,569 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 03:15:13,569 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 03:15:13,569 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 03:15:13,569 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 03:15:13,569 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 03:15:13,569 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 03:15:13,569 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 03:15:13,570 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 03:15:13,570 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 03:15:13,570 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 03:15:13,570 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 03:15:13,570 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 03:15:13,571 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 03:15:13,571 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 03:15:13,571 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 03:15:13,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:15:13,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:15:13,571 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:15:13,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 03:15:13,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 03:15:13,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 03:15:13,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 03:15:13,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 03:15:13,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 03:15:13,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:15:13,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:15:14,184 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:15:14,185 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-09-25 03:15:14,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:15:14 BoogieIcfgContainer [2020-09-25 03:15:14,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:15:14,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:15:14,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:15:14,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:15:14,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:15:12" (1/3) ... [2020-09-25 03:15:14,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d41935b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:15:14, skipping insertion in model container [2020-09-25 03:15:14,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:13" (2/3) ... [2020-09-25 03:15:14,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d41935b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:15:14, skipping insertion in model container [2020-09-25 03:15:14,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:15:14" (3/3) ... [2020-09-25 03:15:14,201 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-circular-2.i [2020-09-25 03:15:14,214 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:15:14,226 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-09-25 03:15:14,250 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-25 03:15:14,285 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:15:14,285 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:15:14,286 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:15:14,286 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:15:14,286 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:15:14,286 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:15:14,286 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:15:14,287 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:15:14,315 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-09-25 03:15:14,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 03:15:14,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:14,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:14,326 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:14,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:14,335 INFO L82 PathProgramCache]: Analyzing trace with hash -976698803, now seen corresponding path program 1 times [2020-09-25 03:15:14,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:14,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615896043] [2020-09-25 03:15:14,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:14,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:14,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:15,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:15,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 03:15:15,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:15:15,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 704 [2020-09-25 03:15:15,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:15,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:15:15,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:15:15,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 03:15:15,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:15:15,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:15,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:15,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:15,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:15,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:15,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 03:15:15,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:15,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:15,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:15,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:15,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:15,553 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 03:15:15,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615896043] [2020-09-25 03:15:15,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:15,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 03:15:15,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244373855] [2020-09-25 03:15:15,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:15:15,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:15,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:15:15,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:15:15,591 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 9 states. [2020-09-25 03:15:16,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:16,377 INFO L93 Difference]: Finished difference Result 271 states and 328 transitions. [2020-09-25 03:15:16,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:15:16,380 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-09-25 03:15:16,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:16,410 INFO L225 Difference]: With dead ends: 271 [2020-09-25 03:15:16,410 INFO L226 Difference]: Without dead ends: 147 [2020-09-25 03:15:16,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:15:16,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-09-25 03:15:16,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 82. [2020-09-25 03:15:16,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-25 03:15:16,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2020-09-25 03:15:16,513 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 20 [2020-09-25 03:15:16,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:16,515 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2020-09-25 03:15:16,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:15:16,515 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2020-09-25 03:15:16,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 03:15:16,519 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:16,520 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] [2020-09-25 03:15:16,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:15:16,520 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:16,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:16,523 INFO L82 PathProgramCache]: Analyzing trace with hash 340604940, now seen corresponding path program 1 times [2020-09-25 03:15:16,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:16,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979799922] [2020-09-25 03:15:16,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:16,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:16,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:16,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 03:15:16,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:16,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-09-25 03:15:16,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:16,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:15:16,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:15:16,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:15:16,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:16,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:16,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:16,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:16,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:16,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:16,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:15:16,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:16,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:16,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:16,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:16,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:16,916 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 03:15:16,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979799922] [2020-09-25 03:15:16,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:16,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:15:16,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88095986] [2020-09-25 03:15:16,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:15:16,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:16,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:15:16,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:15:16,921 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand 7 states. [2020-09-25 03:15:17,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:17,321 INFO L93 Difference]: Finished difference Result 118 states and 125 transitions. [2020-09-25 03:15:17,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 03:15:17,322 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-09-25 03:15:17,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:17,324 INFO L225 Difference]: With dead ends: 118 [2020-09-25 03:15:17,324 INFO L226 Difference]: Without dead ends: 116 [2020-09-25 03:15:17,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:15:17,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-25 03:15:17,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 80. [2020-09-25 03:15:17,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-25 03:15:17,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2020-09-25 03:15:17,336 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 28 [2020-09-25 03:15:17,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:17,336 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2020-09-25 03:15:17,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:15:17,336 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2020-09-25 03:15:17,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 03:15:17,338 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:17,338 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, 1, 1] [2020-09-25 03:15:17,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:15:17,339 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:17,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:17,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1933129776, now seen corresponding path program 1 times [2020-09-25 03:15:17,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:17,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23220963] [2020-09-25 03:15:17,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:17,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:17,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:17,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:19,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:19,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 03:15:19,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:15:19,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1868 [2020-09-25 03:15:19,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:19,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 03:15:19,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:15:19,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 03:15:19,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:19,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:19,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:19,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:19,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:19,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:19,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:15:19,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:19,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:19,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:19,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:19,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:19,536 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 03:15:19,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23220963] [2020-09-25 03:15:19,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:19,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 03:15:19,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653639819] [2020-09-25 03:15:19,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:15:19,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:19,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:15:19,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:15:19,541 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand 13 states. [2020-09-25 03:15:20,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:20,415 INFO L93 Difference]: Finished difference Result 145 states and 153 transitions. [2020-09-25 03:15:20,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 03:15:20,416 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-09-25 03:15:20,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:20,417 INFO L225 Difference]: With dead ends: 145 [2020-09-25 03:15:20,417 INFO L226 Difference]: Without dead ends: 143 [2020-09-25 03:15:20,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=190, Invalid=512, Unknown=0, NotChecked=0, Total=702 [2020-09-25 03:15:20,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-09-25 03:15:20,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 70. [2020-09-25 03:15:20,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 03:15:20,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 75 transitions. [2020-09-25 03:15:20,439 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 75 transitions. Word has length 33 [2020-09-25 03:15:20,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:20,440 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 75 transitions. [2020-09-25 03:15:20,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:15:20,440 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 75 transitions. [2020-09-25 03:15:20,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 03:15:20,442 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:20,443 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, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:20,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:15:20,443 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:20,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:20,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1127481847, now seen corresponding path program 1 times [2020-09-25 03:15:20,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:20,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041798793] [2020-09-25 03:15:20,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:20,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:20,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:20,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:21,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:22,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:22,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 03:15:22,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:15:22,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2227 [2020-09-25 03:15:22,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:22,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:15:22,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 03:15:22,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 03:15:22,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:22,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:22,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:22,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:22,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:22,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:22,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:15:22,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:22,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:22,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:22,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:22,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:22,948 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 03:15:22,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041798793] [2020-09-25 03:15:22,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:22,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 03:15:22,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924371278] [2020-09-25 03:15:22,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:15:22,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:22,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:15:22,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:15:22,954 INFO L87 Difference]: Start difference. First operand 70 states and 75 transitions. Second operand 12 states. [2020-09-25 03:15:23,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:23,696 INFO L93 Difference]: Finished difference Result 171 states and 180 transitions. [2020-09-25 03:15:23,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 03:15:23,697 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-09-25 03:15:23,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:23,701 INFO L225 Difference]: With dead ends: 171 [2020-09-25 03:15:23,701 INFO L226 Difference]: Without dead ends: 141 [2020-09-25 03:15:23,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2020-09-25 03:15:23,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-09-25 03:15:23,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 86. [2020-09-25 03:15:23,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 03:15:23,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2020-09-25 03:15:23,722 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 37 [2020-09-25 03:15:23,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:23,722 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2020-09-25 03:15:23,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:15:23,723 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2020-09-25 03:15:23,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 03:15:23,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:23,725 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:23,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:15:23,725 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:23,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:23,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1168005107, now seen corresponding path program 1 times [2020-09-25 03:15:23,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:23,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414026055] [2020-09-25 03:15:23,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 03:15:23,750 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 03:15:23,752 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 03:15:23,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:15:23,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:15:23 BoogieIcfgContainer [2020-09-25 03:15:23,790 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:15:23,793 INFO L168 Benchmark]: Toolchain (without parser) took 11169.15 ms. Allocated memory was 143.7 MB in the beginning and 309.3 MB in the end (delta: 165.7 MB). Free memory was 105.6 MB in the beginning and 106.9 MB in the end (delta: -1.3 MB). Peak memory consumption was 164.4 MB. Max. memory is 7.1 GB. [2020-09-25 03:15:23,795 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 143.7 MB. Free memory was 125.2 MB in the beginning and 124.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 03:15:23,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 764.30 ms. Allocated memory was 143.7 MB in the beginning and 204.5 MB in the end (delta: 60.8 MB). Free memory was 105.0 MB in the beginning and 171.1 MB in the end (delta: -66.1 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-09-25 03:15:23,799 INFO L168 Benchmark]: Boogie Preprocessor took 70.64 ms. Allocated memory is still 204.5 MB. Free memory was 171.1 MB in the beginning and 168.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-25 03:15:23,804 INFO L168 Benchmark]: RCFGBuilder took 726.18 ms. Allocated memory is still 204.5 MB. Free memory was 168.5 MB in the beginning and 119.7 MB in the end (delta: 48.7 MB). Peak memory consumption was 48.7 MB. Max. memory is 7.1 GB. [2020-09-25 03:15:23,805 INFO L168 Benchmark]: TraceAbstraction took 9597.96 ms. Allocated memory was 204.5 MB in the beginning and 309.3 MB in the end (delta: 104.9 MB). Free memory was 119.1 MB in the beginning and 106.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2020-09-25 03:15:23,816 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 143.7 MB. Free memory was 125.2 MB in the beginning and 124.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 764.30 ms. Allocated memory was 143.7 MB in the beginning and 204.5 MB in the end (delta: 60.8 MB). Free memory was 105.0 MB in the beginning and 171.1 MB in the end (delta: -66.1 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.64 ms. Allocated memory is still 204.5 MB. Free memory was 171.1 MB in the beginning and 168.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 726.18 ms. Allocated memory is still 204.5 MB. Free memory was 168.5 MB in the beginning and 119.7 MB in the end (delta: 48.7 MB). Peak memory consumption was 48.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9597.96 ms. Allocated memory was 204.5 MB in the beginning and 309.3 MB in the end (delta: 104.9 MB). Free memory was 119.1 MB in the beginning and 106.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1021]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L985] SLL* head = malloc(sizeof(SLL)); [L986] head->next = head [L987] head->data = 0 [L989] SLL* x = head; [L990] int state = 1; [L993] COND FALSE !(__VERIFIER_nondet_int()) [L1014] x->data = state [L1016] EXPR head->next [L1016] x = head->next [L1017] COND FALSE !(!(((void*)0) != x)) [L1019] EXPR x->data [L1019] COND TRUE x->data != 0 [L1021] EXPR x->next [L1021] EXPR x->next->data [L1021] EXPR x->next->data != 0 && x->data > x->next->data [L1021] EXPR x->data [L1021] EXPR x->next [L1021] EXPR x->next->data [L1021] EXPR x->next->data != 0 && x->data > x->next->data [L1021] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1021] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 93 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 345 SDtfs, 1045 SDslu, 1668 SDs, 0 SdLazy, 956 SolverSat, 84 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred 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: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 229 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 159 NumberOfCodeBlocks, 159 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 30292 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...