/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --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-token-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 17:22:05,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:22:05,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:22:06,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:22:06,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:22:06,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:22:06,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:22:06,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:22:06,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:22:06,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:22:06,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:22:06,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:22:06,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:22:06,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:22:06,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:22:06,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:22:06,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:22:06,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:22:06,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:22:06,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:22:06,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:22:06,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:22:06,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:22:06,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:22:06,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:22:06,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:22:06,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:22:06,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:22:06,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:22:06,031 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:22:06,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:22:06,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:22:06,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:22:06,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:22:06,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:22:06,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:22:06,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:22:06,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:22:06,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:22:06,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:22:06,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:22:06,039 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 [2020-08-21 17:22:06,066 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:22:06,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:22:06,068 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:22:06,068 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:22:06,068 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:22:06,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:22:06,069 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:22:06,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:22:06,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:22:06,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:22:06,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:22:06,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:22:06,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:22:06,070 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:22:06,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:22:06,071 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:22:06,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:22:06,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:22:06,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:22:06,071 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:22:06,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:22:06,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:22:06,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:22:06,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:22:06,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:22:06,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:22:06,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:22:06,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:22:06,073 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:22:06,073 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-21 17:22:06,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:22:06,422 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:22:06,429 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:22:06,431 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:22:06,432 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:22:06,433 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-token-1.i [2020-08-21 17:22:06,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79ddfebe6/cb45de5f18c5450a9a18bd66e0963b1d/FLAG6bee5f47e [2020-08-21 17:22:07,056 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:22:07,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-token-1.i [2020-08-21 17:22:07,072 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79ddfebe6/cb45de5f18c5450a9a18bd66e0963b1d/FLAG6bee5f47e [2020-08-21 17:22:07,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79ddfebe6/cb45de5f18c5450a9a18bd66e0963b1d [2020-08-21 17:22:07,360 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:22:07,362 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:22:07,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:22:07,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:22:07,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:22:07,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:22:07" (1/1) ... [2020-08-21 17:22:07,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6cae7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:22:07, skipping insertion in model container [2020-08-21 17:22:07,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:22:07" (1/1) ... [2020-08-21 17:22:07,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:22:07,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:22:07,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:22:07,897 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:22:07,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:22:08,005 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:22:08,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:22:08 WrapperNode [2020-08-21 17:22:08,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:22:08,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:22:08,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:22:08,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:22:08,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:22:08" (1/1) ... [2020-08-21 17:22:08,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:22:08" (1/1) ... [2020-08-21 17:22:08,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:22:08" (1/1) ... [2020-08-21 17:22:08,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:22:08" (1/1) ... [2020-08-21 17:22:08,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:22:08" (1/1) ... [2020-08-21 17:22:08,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:22:08" (1/1) ... [2020-08-21 17:22:08,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:22:08" (1/1) ... [2020-08-21 17:22:08,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:22:08,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:22:08,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:22:08,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:22:08,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:22:08" (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 [2020-08-21 17:22:08,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:22:08,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:22:08,135 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:22:08,136 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-21 17:22:08,136 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-21 17:22:08,136 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-21 17:22:08,136 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-21 17:22:08,136 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-21 17:22:08,136 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-21 17:22:08,137 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-21 17:22:08,137 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-21 17:22:08,137 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-21 17:22:08,137 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-21 17:22:08,137 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-21 17:22:08,137 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-21 17:22:08,138 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-21 17:22:08,138 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-21 17:22:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-21 17:22:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-21 17:22:08,139 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-21 17:22:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-21 17:22:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-21 17:22:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-21 17:22:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-21 17:22:08,140 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-21 17:22:08,142 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-21 17:22:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-21 17:22:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-21 17:22:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-21 17:22:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-21 17:22:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-21 17:22:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-21 17:22:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-21 17:22:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-21 17:22:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-21 17:22:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-21 17:22:08,145 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-21 17:22:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-21 17:22:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-21 17:22:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-21 17:22:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-21 17:22:08,146 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-21 17:22:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-21 17:22:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-21 17:22:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-21 17:22:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-21 17:22:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-21 17:22:08,147 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-21 17:22:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-21 17:22:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-21 17:22:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-21 17:22:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-21 17:22:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-21 17:22:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 17:22:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 17:22:08,148 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-21 17:22:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 17:22:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-21 17:22:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-21 17:22:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-21 17:22:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-21 17:22:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-21 17:22:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 17:22:08,149 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-21 17:22:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-21 17:22:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-21 17:22:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-21 17:22:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-21 17:22:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-21 17:22:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-21 17:22:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-21 17:22:08,150 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-21 17:22:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-21 17:22:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-21 17:22:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-21 17:22:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-21 17:22:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-21 17:22:08,151 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-21 17:22:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-21 17:22:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-21 17:22:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-21 17:22:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-21 17:22:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-21 17:22:08,152 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-21 17:22:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-21 17:22:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-21 17:22:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-21 17:22:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-21 17:22:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-21 17:22:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-21 17:22:08,153 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-21 17:22:08,154 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-21 17:22:08,154 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-21 17:22:08,154 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-21 17:22:08,154 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-21 17:22:08,154 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-21 17:22:08,154 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-21 17:22:08,154 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-21 17:22:08,154 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-21 17:22:08,154 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-21 17:22:08,154 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-21 17:22:08,155 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-21 17:22:08,155 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-21 17:22:08,155 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-21 17:22:08,155 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-21 17:22:08,155 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-21 17:22:08,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:22:08,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:22:08,155 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:22:08,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 17:22:08,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 17:22:08,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 17:22:08,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 17:22:08,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 17:22:08,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:22:08,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:22:08,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:22:08,693 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:22:08,695 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-08-21 17:22:08,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:22:08 BoogieIcfgContainer [2020-08-21 17:22:08,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:22:08,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:22:08,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:22:08,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:22:08,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:22:07" (1/3) ... [2020-08-21 17:22:08,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ab00b85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:22:08, skipping insertion in model container [2020-08-21 17:22:08,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:22:08" (2/3) ... [2020-08-21 17:22:08,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ab00b85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:22:08, skipping insertion in model container [2020-08-21 17:22:08,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:22:08" (3/3) ... [2020-08-21 17:22:08,715 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-token-1.i [2020-08-21 17:22:08,727 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:22:08,738 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-08-21 17:22:08,753 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-08-21 17:22:08,786 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:22:08,786 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:22:08,786 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:22:08,786 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:22:08,787 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:22:08,787 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:22:08,787 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:22:08,787 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:22:08,810 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-08-21 17:22:08,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-21 17:22:08,816 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:22:08,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:22:08,818 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:22:08,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:22:08,825 INFO L82 PathProgramCache]: Analyzing trace with hash 68430596, now seen corresponding path program 1 times [2020-08-21 17:22:08,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:22:08,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532352479] [2020-08-21 17:22:08,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:22:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:22:09,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:22:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:22:09,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:22:09,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532352479] [2020-08-21 17:22:09,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:22:09,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 17:22:09,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252528866] [2020-08-21 17:22:09,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 17:22:09,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:22:09,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 17:22:09,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:22:09,068 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 3 states. [2020-08-21 17:22:09,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:22:09,222 INFO L93 Difference]: Finished difference Result 92 states and 138 transitions. [2020-08-21 17:22:09,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 17:22:09,225 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-08-21 17:22:09,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:22:09,236 INFO L225 Difference]: With dead ends: 92 [2020-08-21 17:22:09,236 INFO L226 Difference]: Without dead ends: 43 [2020-08-21 17:22:09,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 17:22:09,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-21 17:22:09,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-21 17:22:09,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-21 17:22:09,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-08-21 17:22:09,285 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 10 [2020-08-21 17:22:09,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:22:09,286 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-08-21 17:22:09,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 17:22:09,286 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-08-21 17:22:09,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-21 17:22:09,311 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:22:09,311 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:22:09,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:22:09,312 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:22:09,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:22:09,313 INFO L82 PathProgramCache]: Analyzing trace with hash 67663975, now seen corresponding path program 1 times [2020-08-21 17:22:09,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:22:09,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530347959] [2020-08-21 17:22:09,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:22:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:22:09,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:22:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:22:09,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:22:09,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530347959] [2020-08-21 17:22:09,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:22:09,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:22:09,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808848973] [2020-08-21 17:22:09,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:22:09,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:22:09,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:22:09,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:22:09,413 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 4 states. [2020-08-21 17:22:09,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:22:09,537 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2020-08-21 17:22:09,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 17:22:09,537 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-08-21 17:22:09,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:22:09,539 INFO L225 Difference]: With dead ends: 43 [2020-08-21 17:22:09,539 INFO L226 Difference]: Without dead ends: 41 [2020-08-21 17:22:09,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:22:09,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-08-21 17:22:09,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-08-21 17:22:09,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-21 17:22:09,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-08-21 17:22:09,548 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 10 [2020-08-21 17:22:09,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:22:09,548 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-08-21 17:22:09,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:22:09,548 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-08-21 17:22:09,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-21 17:22:09,549 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:22:09,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:22:09,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:22:09,550 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:22:09,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:22:09,550 INFO L82 PathProgramCache]: Analyzing trace with hash 2097539711, now seen corresponding path program 1 times [2020-08-21 17:22:09,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:22:09,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814950793] [2020-08-21 17:22:09,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:22:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:22:09,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:22:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:22:09,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 17:22:09,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814950793] [2020-08-21 17:22:09,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:22:09,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 17:22:09,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380080939] [2020-08-21 17:22:09,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 17:22:09,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:22:09,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 17:22:09,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 17:22:09,656 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 5 states. [2020-08-21 17:22:09,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:22:09,790 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2020-08-21 17:22:09,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 17:22:09,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-08-21 17:22:09,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:22:09,792 INFO L225 Difference]: With dead ends: 67 [2020-08-21 17:22:09,792 INFO L226 Difference]: Without dead ends: 65 [2020-08-21 17:22:09,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 17:22:09,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-08-21 17:22:09,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 39. [2020-08-21 17:22:09,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-21 17:22:09,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-08-21 17:22:09,801 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2020-08-21 17:22:09,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:22:09,801 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-08-21 17:22:09,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 17:22:09,801 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-08-21 17:22:09,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-21 17:22:09,802 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:22:09,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 17:22:09,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:22:09,803 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:22:09,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:22:09,803 INFO L82 PathProgramCache]: Analyzing trace with hash -409997773, now seen corresponding path program 1 times [2020-08-21 17:22:09,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:22:09,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408310061] [2020-08-21 17:22:09,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:22:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 17:22:09,850 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 17:22:09,850 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 17:22:09,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:22:09,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 05:22:09 BoogieIcfgContainer [2020-08-21 17:22:09,871 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 17:22:09,874 INFO L168 Benchmark]: Toolchain (without parser) took 2510.88 ms. Allocated memory was 138.9 MB in the beginning and 234.4 MB in the end (delta: 95.4 MB). Free memory was 101.2 MB in the beginning and 157.4 MB in the end (delta: -56.2 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. [2020-08-21 17:22:09,875 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 17:22:09,876 INFO L168 Benchmark]: CACSL2BoogieTranslator took 643.16 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 101.0 MB in the beginning and 169.4 MB in the end (delta: -68.4 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-08-21 17:22:09,876 INFO L168 Benchmark]: Boogie Preprocessor took 65.46 ms. Allocated memory is still 201.9 MB. Free memory was 169.4 MB in the beginning and 166.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-08-21 17:22:09,877 INFO L168 Benchmark]: RCFGBuilder took 631.84 ms. Allocated memory is still 201.9 MB. Free memory was 166.4 MB in the beginning and 120.3 MB in the end (delta: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 7.1 GB. [2020-08-21 17:22:09,878 INFO L168 Benchmark]: TraceAbstraction took 1164.03 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 119.7 MB in the beginning and 157.4 MB in the end (delta: -37.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 17:22:09,882 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 643.16 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 101.0 MB in the beginning and 169.4 MB in the end (delta: -68.4 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.46 ms. Allocated memory is still 201.9 MB. Free memory was 169.4 MB in the beginning and 166.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 631.84 ms. Allocated memory is still 201.9 MB. Free memory was 166.4 MB in the beginning and 120.3 MB in the end (delta: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1164.03 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 119.7 MB in the beginning and 157.4 MB in the end (delta: -37.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1020]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* head = malloc(sizeof(SLL)); [L993] head->next = ((void*)0) [L994] head->data = 0 [L996] SLL* x = head; [L999] COND FALSE !(__VERIFIER_nondet_int()) [L1007] x->data = 1 [L1008] x->next = malloc(sizeof(SLL)) [L1009] EXPR x->next [L1009] x->next->data = 2 [L1011] x = head [L1013] COND FALSE !(!(((void*)0) != x)) [L1015] EXPR x->data [L1015] COND FALSE !(1 != x->data) [L1020] EXPR x->data [L1020] COND TRUE !(2 == x->data) [L1020] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 49 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 76 SDslu, 61 SDs, 0 SdLazy, 169 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 26 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 661 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...