/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/dll2n_update_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:20:45,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:20:45,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:20:45,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:20:45,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:20:45,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:20:45,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:20:45,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:20:45,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:20:45,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:20:45,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:20:45,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:20:45,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:20:45,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:20:45,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:20:45,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:20:45,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:20:45,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:20:45,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:20:45,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:20:45,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:20:45,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:20:45,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:20:45,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:20:45,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:20:45,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:20:45,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:20:45,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:20:45,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:20:45,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:20:45,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:20:45,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:20:45,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:20:45,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:20:45,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:20:45,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:20:45,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:20:45,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:20:45,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:20:45,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:20:45,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:20:45,118 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 13:20:45,163 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:20:45,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:20:45,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:20:45,166 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:20:45,167 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:20:45,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:20:45,167 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:20:45,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:20:45,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:20:45,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:20:45,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:20:45,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:20:45,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:20:45,170 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:20:45,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:20:45,170 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:20:45,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:20:45,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:20:45,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:20:45,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:20:45,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:20:45,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:20:45,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:20:45,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:20:45,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:20:45,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:20:45,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:20:45,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:20:45,173 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:20:45,173 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 -> false [2020-08-21 13:20:45,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:20:45,475 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:20:45,480 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:20:45,482 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:20:45,482 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:20:45,482 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_update_all_reverse.i [2020-08-21 13:20:45,545 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad808f972/b84937c71d864e69aa1a8fd79b7236a5/FLAG38a16755d [2020-08-21 13:20:46,022 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:20:46,022 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2n_update_all_reverse.i [2020-08-21 13:20:46,037 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad808f972/b84937c71d864e69aa1a8fd79b7236a5/FLAG38a16755d [2020-08-21 13:20:46,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad808f972/b84937c71d864e69aa1a8fd79b7236a5 [2020-08-21 13:20:46,376 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:20:46,377 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:20:46,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:20:46,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:20:46,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:20:46,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:20:46" (1/1) ... [2020-08-21 13:20:46,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ee1c646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:20:46, skipping insertion in model container [2020-08-21 13:20:46,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:20:46" (1/1) ... [2020-08-21 13:20:46,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:20:46,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:20:46,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:20:46,839 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:20:46,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:20:46,990 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:20:46,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:20:46 WrapperNode [2020-08-21 13:20:46,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:20:46,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:20:46,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:20:46,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:20:47,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:20:46" (1/1) ... [2020-08-21 13:20:47,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:20:46" (1/1) ... [2020-08-21 13:20:47,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:20:46" (1/1) ... [2020-08-21 13:20:47,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:20:46" (1/1) ... [2020-08-21 13:20:47,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:20:46" (1/1) ... [2020-08-21 13:20:47,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:20:46" (1/1) ... [2020-08-21 13:20:47,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:20:46" (1/1) ... [2020-08-21 13:20:47,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:20:47,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:20:47,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:20:47,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:20:47,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:20:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:20:47,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:20:47,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:20:47,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-21 13:20:47,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-21 13:20:47,118 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-08-21 13:20:47,118 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-08-21 13:20:47,118 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-08-21 13:20:47,119 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2020-08-21 13:20:47,119 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_get_data_at [2020-08-21 13:20:47,119 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_update_at [2020-08-21 13:20:47,119 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:20:47,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:20:47,121 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-21 13:20:47,121 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-21 13:20:47,121 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-21 13:20:47,123 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-21 13:20:47,123 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-21 13:20:47,124 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-21 13:20:47,124 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-21 13:20:47,124 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-21 13:20:47,124 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-21 13:20:47,124 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-21 13:20:47,124 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-21 13:20:47,125 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-21 13:20:47,125 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-21 13:20:47,125 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-21 13:20:47,125 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-21 13:20:47,125 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-21 13:20:47,125 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-21 13:20:47,125 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-21 13:20:47,126 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-21 13:20:47,126 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-21 13:20:47,126 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-21 13:20:47,126 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-21 13:20:47,127 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-21 13:20:47,127 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-21 13:20:47,127 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-21 13:20:47,127 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-21 13:20:47,127 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-21 13:20:47,127 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-21 13:20:47,127 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-21 13:20:47,128 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-21 13:20:47,128 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-21 13:20:47,128 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-21 13:20:47,128 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-21 13:20:47,128 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-21 13:20:47,128 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-21 13:20:47,128 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-21 13:20:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-21 13:20:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-21 13:20:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-21 13:20:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-21 13:20:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-21 13:20:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-21 13:20:47,129 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-21 13:20:47,130 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-21 13:20:47,130 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-21 13:20:47,130 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-21 13:20:47,130 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-21 13:20:47,131 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-21 13:20:47,131 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-21 13:20:47,131 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-21 13:20:47,131 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-21 13:20:47,131 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-21 13:20:47,132 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 13:20:47,132 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 13:20:47,132 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-21 13:20:47,133 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 13:20:47,133 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-21 13:20:47,133 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-21 13:20:47,133 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-21 13:20:47,133 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-21 13:20:47,134 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-21 13:20:47,134 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 13:20:47,135 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-21 13:20:47,135 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-21 13:20:47,135 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-21 13:20:47,136 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-21 13:20:47,136 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-21 13:20:47,136 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-21 13:20:47,137 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-21 13:20:47,137 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-21 13:20:47,137 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-21 13:20:47,137 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-21 13:20:47,137 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-21 13:20:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-21 13:20:47,138 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-21 13:20:47,139 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-21 13:20:47,139 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-21 13:20:47,139 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-21 13:20:47,139 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-21 13:20:47,139 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-21 13:20:47,139 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-21 13:20:47,139 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-21 13:20:47,140 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-21 13:20:47,140 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-21 13:20:47,140 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-21 13:20:47,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-21 13:20:47,140 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-21 13:20:47,140 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-21 13:20:47,140 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-21 13:20:47,141 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-21 13:20:47,141 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-21 13:20:47,141 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-21 13:20:47,141 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-21 13:20:47,141 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-21 13:20:47,141 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-21 13:20:47,141 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-21 13:20:47,141 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-21 13:20:47,142 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-21 13:20:47,142 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-21 13:20:47,142 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-21 13:20:47,142 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-21 13:20:47,142 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-21 13:20:47,142 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-21 13:20:47,143 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-21 13:20:47,143 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-21 13:20:47,143 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-08-21 13:20:47,143 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-08-21 13:20:47,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 13:20:47,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 13:20:47,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:20:47,144 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-08-21 13:20:47,144 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2020-08-21 13:20:47,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 13:20:47,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:20:47,145 INFO L130 BoogieDeclarations]: Found specification of procedure dll_get_data_at [2020-08-21 13:20:47,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:20:47,145 INFO L130 BoogieDeclarations]: Found specification of procedure dll_update_at [2020-08-21 13:20:47,146 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:20:47,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:20:47,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:20:47,574 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-08-21 13:20:47,736 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:20:47,736 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-21 13:20:47,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:20:47 BoogieIcfgContainer [2020-08-21 13:20:47,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:20:47,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:20:47,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:20:47,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:20:47,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:20:46" (1/3) ... [2020-08-21 13:20:47,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a1e925c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:20:47, skipping insertion in model container [2020-08-21 13:20:47,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:20:46" (2/3) ... [2020-08-21 13:20:47,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a1e925c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:20:47, skipping insertion in model container [2020-08-21 13:20:47,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:20:47" (3/3) ... [2020-08-21 13:20:47,748 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_update_all_reverse.i [2020-08-21 13:20:47,758 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:20:47,766 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:20:47,776 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:20:47,796 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:20:47,796 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:20:47,796 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:20:47,796 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:20:47,797 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:20:47,797 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:20:47,797 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:20:47,797 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:20:47,816 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-08-21 13:20:47,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 13:20:47,824 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:20:47,825 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] [2020-08-21 13:20:47,825 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:20:47,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:20:47,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1303429635, now seen corresponding path program 1 times [2020-08-21 13:20:47,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:20:47,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331396740] [2020-08-21 13:20:47,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:20:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:20:48,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:20:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:20:48,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:20:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:20:48,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:20:48,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:20:48,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:20:48,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331396740] [2020-08-21 13:20:48,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:20:48,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:20:48,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963789261] [2020-08-21 13:20:48,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:20:48,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:20:48,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:20:48,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:20:48,124 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-08-21 13:20:48,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:20:48,466 INFO L93 Difference]: Finished difference Result 123 states and 178 transitions. [2020-08-21 13:20:48,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 13:20:48,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-21 13:20:48,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:20:48,480 INFO L225 Difference]: With dead ends: 123 [2020-08-21 13:20:48,480 INFO L226 Difference]: Without dead ends: 64 [2020-08-21 13:20:48,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:20:48,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-08-21 13:20:48,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 38. [2020-08-21 13:20:48,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-21 13:20:48,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-08-21 13:20:48,536 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 25 [2020-08-21 13:20:48,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:20:48,537 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-08-21 13:20:48,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:20:48,537 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-08-21 13:20:48,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 13:20:48,539 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:20:48,539 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] [2020-08-21 13:20:48,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:20:48,539 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:20:48,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:20:48,540 INFO L82 PathProgramCache]: Analyzing trace with hash 2048382207, now seen corresponding path program 1 times [2020-08-21 13:20:48,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:20:48,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011871411] [2020-08-21 13:20:48,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:20:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:20:48,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:20:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:20:48,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:20:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:20:48,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:20:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:20:48,704 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 13:20:48,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011871411] [2020-08-21 13:20:48,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:20:48,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 13:20:48,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503398534] [2020-08-21 13:20:48,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 13:20:48,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:20:48,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 13:20:48,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-21 13:20:48,708 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 7 states. [2020-08-21 13:20:48,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:20:48,957 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-08-21 13:20:48,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 13:20:48,957 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-08-21 13:20:48,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:20:48,959 INFO L225 Difference]: With dead ends: 68 [2020-08-21 13:20:48,959 INFO L226 Difference]: Without dead ends: 43 [2020-08-21 13:20:48,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:20:48,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-21 13:20:48,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-08-21 13:20:48,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-21 13:20:48,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-08-21 13:20:48,970 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 25 [2020-08-21 13:20:48,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:20:48,970 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-08-21 13:20:48,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 13:20:48,970 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-08-21 13:20:48,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-21 13:20:48,972 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:20:48,972 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] [2020-08-21 13:20:48,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:20:48,972 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:20:48,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:20:48,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1036290808, now seen corresponding path program 1 times [2020-08-21 13:20:48,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:20:48,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112229223] [2020-08-21 13:20:48,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:20:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:20:49,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:20:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:20:49,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:20:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:20:49,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 13:20:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:20:49,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:20:49,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112229223] [2020-08-21 13:20:49,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:20:49,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 13:20:49,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835375626] [2020-08-21 13:20:49,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 13:20:49,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:20:49,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 13:20:49,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 13:20:49,147 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 6 states. [2020-08-21 13:20:49,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:20:49,379 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2020-08-21 13:20:49,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 13:20:49,379 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-08-21 13:20:49,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:20:49,380 INFO L225 Difference]: With dead ends: 73 [2020-08-21 13:20:49,380 INFO L226 Difference]: Without dead ends: 43 [2020-08-21 13:20:49,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:20:49,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-21 13:20:49,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-08-21 13:20:49,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-21 13:20:49,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-08-21 13:20:49,389 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 30 [2020-08-21 13:20:49,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:20:49,389 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-08-21 13:20:49,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 13:20:49,390 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-08-21 13:20:49,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-21 13:20:49,391 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:20:49,391 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] [2020-08-21 13:20:49,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:20:49,391 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:20:49,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:20:49,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1569732746, now seen corresponding path program 1 times [2020-08-21 13:20:49,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:20:49,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910035116] [2020-08-21 13:20:49,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:20:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:20:49,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:20:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:20:49,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:20:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:20:49,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 13:20:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:20:49,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:20:49,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910035116] [2020-08-21 13:20:49,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:20:49,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 13:20:49,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145948816] [2020-08-21 13:20:49,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:20:49,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:20:49,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:20:49,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:20:49,522 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 8 states. [2020-08-21 13:20:49,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:20:49,742 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2020-08-21 13:20:49,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 13:20:49,742 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-08-21 13:20:49,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:20:49,743 INFO L225 Difference]: With dead ends: 73 [2020-08-21 13:20:49,743 INFO L226 Difference]: Without dead ends: 48 [2020-08-21 13:20:49,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:20:49,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-21 13:20:49,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-08-21 13:20:49,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-21 13:20:49,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-08-21 13:20:49,752 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 30 [2020-08-21 13:20:49,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:20:49,752 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-08-21 13:20:49,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:20:49,753 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-08-21 13:20:49,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-21 13:20:49,754 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:20:49,754 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:20:49,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:20:49,754 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:20:49,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:20:49,755 INFO L82 PathProgramCache]: Analyzing trace with hash 649760861, now seen corresponding path program 1 times [2020-08-21 13:20:49,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:20:49,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009542448] [2020-08-21 13:20:49,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:20:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:20:49,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:20:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:20:49,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:20:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:20:49,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-21 13:20:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:20:49,885 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-21 13:20:49,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009542448] [2020-08-21 13:20:49,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:20:49,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 13:20:49,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55783501] [2020-08-21 13:20:49,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 13:20:49,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:20:49,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 13:20:49,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 13:20:49,892 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 6 states. [2020-08-21 13:20:50,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:20:50,039 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2020-08-21 13:20:50,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 13:20:50,039 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-08-21 13:20:50,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:20:50,040 INFO L225 Difference]: With dead ends: 49 [2020-08-21 13:20:50,040 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 13:20:50,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:20:50,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 13:20:50,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 13:20:50,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 13:20:50,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 13:20:50,042 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-08-21 13:20:50,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:20:50,042 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 13:20:50,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 13:20:50,042 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 13:20:50,042 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 13:20:50,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:20:50,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 13:20:50,269 INFO L264 CegarLoopResult]: At program point L607-2(lines 607 610) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) [2020-08-21 13:20:50,269 INFO L268 CegarLoopResult]: For program point L607-3(lines 607 610) no Hoare annotation was computed. [2020-08-21 13:20:50,270 INFO L264 CegarLoopResult]: At program point dll_update_atENTRY(lines 606 612) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) [2020-08-21 13:20:50,270 INFO L268 CegarLoopResult]: For program point dll_update_atEXIT(lines 606 612) no Hoare annotation was computed. [2020-08-21 13:20:50,270 INFO L268 CegarLoopResult]: For program point dll_update_atFINAL(lines 606 612) no Hoare annotation was computed. [2020-08-21 13:20:50,270 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-21 13:20:50,270 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-08-21 13:20:50,270 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 13:20:50,270 INFO L271 CegarLoopResult]: At program point myexitENTRY(lines 561 563) the Hoare annotation is: true [2020-08-21 13:20:50,271 INFO L268 CegarLoopResult]: For program point myexitEXIT(lines 561 563) no Hoare annotation was computed. [2020-08-21 13:20:50,272 INFO L271 CegarLoopResult]: At program point L562(line 562) the Hoare annotation is: true [2020-08-21 13:20:50,272 INFO L268 CegarLoopResult]: For program point L578-1(lines 578 580) no Hoare annotation was computed. [2020-08-21 13:20:50,272 INFO L264 CegarLoopResult]: At program point dll_createENTRY(lines 574 591) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-08-21 13:20:50,272 INFO L271 CegarLoopResult]: At program point L576-2(lines 576 589) the Hoare annotation is: true [2020-08-21 13:20:50,272 INFO L268 CegarLoopResult]: For program point L576-3(lines 576 589) no Hoare annotation was computed. [2020-08-21 13:20:50,272 INFO L268 CegarLoopResult]: For program point dll_createFINAL(lines 574 591) no Hoare annotation was computed. [2020-08-21 13:20:50,273 INFO L271 CegarLoopResult]: At program point L579(line 579) the Hoare annotation is: true [2020-08-21 13:20:50,278 INFO L268 CegarLoopResult]: For program point dll_createEXIT(lines 574 591) no Hoare annotation was computed. [2020-08-21 13:20:50,278 INFO L268 CegarLoopResult]: For program point L584(lines 584 586) no Hoare annotation was computed. [2020-08-21 13:20:50,278 INFO L268 CegarLoopResult]: For program point L584-2(lines 584 586) no Hoare annotation was computed. [2020-08-21 13:20:50,278 INFO L268 CegarLoopResult]: For program point L578(lines 578 580) no Hoare annotation was computed. [2020-08-21 13:20:50,278 INFO L268 CegarLoopResult]: For program point __bswap_32ENTRY(lines 63 67) no Hoare annotation was computed. [2020-08-21 13:20:50,279 INFO L268 CegarLoopResult]: For program point __bswap_32FINAL(lines 63 67) no Hoare annotation was computed. [2020-08-21 13:20:50,279 INFO L268 CegarLoopResult]: For program point __bswap_32EXIT(lines 63 67) no Hoare annotation was computed. [2020-08-21 13:20:50,279 INFO L268 CegarLoopResult]: For program point __bswap_64ENTRY(lines 68 72) no Hoare annotation was computed. [2020-08-21 13:20:50,279 INFO L268 CegarLoopResult]: For program point __bswap_64FINAL(lines 68 72) no Hoare annotation was computed. [2020-08-21 13:20:50,279 INFO L268 CegarLoopResult]: For program point __bswap_64EXIT(lines 68 72) no Hoare annotation was computed. [2020-08-21 13:20:50,279 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 13:20:50,279 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 13:20:50,279 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 13:20:50,280 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 13:20:50,280 INFO L271 CegarLoopResult]: At program point L600-2(lines 600 603) the Hoare annotation is: true [2020-08-21 13:20:50,280 INFO L268 CegarLoopResult]: For program point L600-3(lines 600 603) no Hoare annotation was computed. [2020-08-21 13:20:50,280 INFO L268 CegarLoopResult]: For program point dll_get_data_atFINAL(lines 599 605) no Hoare annotation was computed. [2020-08-21 13:20:50,280 INFO L271 CegarLoopResult]: At program point dll_get_data_atENTRY(lines 599 605) the Hoare annotation is: true [2020-08-21 13:20:50,280 INFO L268 CegarLoopResult]: For program point dll_get_data_atEXIT(lines 599 605) no Hoare annotation was computed. [2020-08-21 13:20:50,280 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 613 632) no Hoare annotation was computed. [2020-08-21 13:20:50,280 INFO L268 CegarLoopResult]: For program point L628(line 628) no Hoare annotation was computed. [2020-08-21 13:20:50,286 INFO L264 CegarLoopResult]: At program point L624(line 624) the Hoare annotation is: false [2020-08-21 13:20:50,286 INFO L268 CegarLoopResult]: For program point L624-1(line 624) no Hoare annotation was computed. [2020-08-21 13:20:50,286 INFO L268 CegarLoopResult]: For program point L624-2(lines 624 626) no Hoare annotation was computed. [2020-08-21 13:20:50,286 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 613 632) no Hoare annotation was computed. [2020-08-21 13:20:50,286 INFO L264 CegarLoopResult]: At program point L620(line 620) the Hoare annotation is: (<= 2 main_~len~0) [2020-08-21 13:20:50,286 INFO L268 CegarLoopResult]: For program point L622-2(lines 622 627) no Hoare annotation was computed. [2020-08-21 13:20:50,287 INFO L268 CegarLoopResult]: For program point L620-1(lines 618 621) no Hoare annotation was computed. [2020-08-21 13:20:50,287 INFO L264 CegarLoopResult]: At program point L622-3(lines 622 627) the Hoare annotation is: (and (<= 2 main_~len~0) (<= 1 main_~i~0)) [2020-08-21 13:20:50,287 INFO L271 CegarLoopResult]: At program point L622-4(lines 622 627) the Hoare annotation is: true [2020-08-21 13:20:50,287 INFO L264 CegarLoopResult]: At program point L616(line 616) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (<= 2 main_~len~0) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-08-21 13:20:50,287 INFO L264 CegarLoopResult]: At program point L618-2(lines 618 621) the Hoare annotation is: (<= 2 main_~len~0) [2020-08-21 13:20:50,287 INFO L268 CegarLoopResult]: For program point L616-1(line 616) no Hoare annotation was computed. [2020-08-21 13:20:50,288 INFO L268 CegarLoopResult]: For program point L618-3(lines 618 621) no Hoare annotation was computed. [2020-08-21 13:20:50,288 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 630) no Hoare annotation was computed. [2020-08-21 13:20:50,288 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 613 632) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-08-21 13:20:50,288 INFO L264 CegarLoopResult]: At program point L625(lines 613 632) the Hoare annotation is: false [2020-08-21 13:20:50,288 INFO L268 CegarLoopResult]: For program point dll_destroyEXIT(lines 592 598) no Hoare annotation was computed. [2020-08-21 13:20:50,288 INFO L264 CegarLoopResult]: At program point dll_destroyENTRY(lines 592 598) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-08-21 13:20:50,288 INFO L271 CegarLoopResult]: At program point L593-2(lines 593 597) the Hoare annotation is: true [2020-08-21 13:20:50,289 INFO L268 CegarLoopResult]: For program point L593-3(lines 592 598) no Hoare annotation was computed. [2020-08-21 13:20:50,289 INFO L268 CegarLoopResult]: For program point node_createENTRY(lines 564 573) no Hoare annotation was computed. [2020-08-21 13:20:50,289 INFO L268 CegarLoopResult]: For program point node_createFINAL(lines 564 573) no Hoare annotation was computed. [2020-08-21 13:20:50,289 INFO L268 CegarLoopResult]: For program point L567(line 567) no Hoare annotation was computed. [2020-08-21 13:20:50,289 INFO L268 CegarLoopResult]: For program point L566(lines 566 568) no Hoare annotation was computed. [2020-08-21 13:20:50,289 INFO L268 CegarLoopResult]: For program point node_createEXIT(lines 564 573) no Hoare annotation was computed. [2020-08-21 13:20:50,289 INFO L268 CegarLoopResult]: For program point L566-1(lines 566 568) no Hoare annotation was computed. [2020-08-21 13:20:50,309 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-08-21 13:20:50,310 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-08-21 13:20:50,311 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-08-21 13:20:50,311 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-08-21 13:20:50,311 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-08-21 13:20:50,311 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-08-21 13:20:50,312 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 13:20:50,312 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 13:20:50,312 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-08-21 13:20:50,312 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-08-21 13:20:50,313 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-08-21 13:20:50,313 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-08-21 13:20:50,313 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-08-21 13:20:50,313 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-08-21 13:20:50,314 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-08-21 13:20:50,314 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-08-21 13:20:50,314 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 13:20:50,314 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 13:20:50,314 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-08-21 13:20:50,314 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-08-21 13:20:50,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:20:50 BoogieIcfgContainer [2020-08-21 13:20:50,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 13:20:50,320 INFO L168 Benchmark]: Toolchain (without parser) took 3941.60 ms. Allocated memory was 141.6 MB in the beginning and 244.8 MB in the end (delta: 103.3 MB). Free memory was 102.3 MB in the beginning and 204.6 MB in the end (delta: -102.3 MB). Peak memory consumption was 109.5 MB. Max. memory is 7.1 GB. [2020-08-21 13:20:50,320 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 141.6 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 13:20:50,321 INFO L168 Benchmark]: CACSL2BoogieTranslator took 613.73 ms. Allocated memory was 141.6 MB in the beginning and 206.0 MB in the end (delta: 64.5 MB). Free memory was 102.1 MB in the beginning and 170.8 MB in the end (delta: -68.7 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-08-21 13:20:50,322 INFO L168 Benchmark]: Boogie Preprocessor took 60.70 ms. Allocated memory is still 206.0 MB. Free memory was 170.8 MB in the beginning and 167.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-08-21 13:20:50,323 INFO L168 Benchmark]: RCFGBuilder took 686.31 ms. Allocated memory is still 206.0 MB. Free memory was 167.6 MB in the beginning and 118.9 MB in the end (delta: 48.7 MB). Peak memory consumption was 48.7 MB. Max. memory is 7.1 GB. [2020-08-21 13:20:50,324 INFO L168 Benchmark]: TraceAbstraction took 2575.70 ms. Allocated memory was 206.0 MB in the beginning and 244.8 MB in the end (delta: 38.8 MB). Free memory was 118.3 MB in the beginning and 204.6 MB in the end (delta: -86.4 MB). Peak memory consumption was 61.0 MB. Max. memory is 7.1 GB. [2020-08-21 13:20:50,328 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 141.6 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 613.73 ms. Allocated memory was 141.6 MB in the beginning and 206.0 MB in the end (delta: 64.5 MB). Free memory was 102.1 MB in the beginning and 170.8 MB in the end (delta: -68.7 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.70 ms. Allocated memory is still 206.0 MB. Free memory was 170.8 MB in the beginning and 167.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 686.31 ms. Allocated memory is still 206.0 MB. Free memory was 167.6 MB in the beginning and 118.9 MB in the end (delta: 48.7 MB). Peak memory consumption was 48.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2575.70 ms. Allocated memory was 206.0 MB in the beginning and 244.8 MB in the end (delta: 38.8 MB). Free memory was 118.3 MB in the beginning and 204.6 MB in the end (delta: -86.4 MB). Peak memory consumption was 61.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 630]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 562]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 618]: Loop Invariant Derived loop invariant: 2 <= len - InvariantResult [Line: 607]: Loop Invariant [2020-08-21 13:20:50,337 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-08-21 13:20:50,338 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-08-21 13:20:50,338 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-08-21 13:20:50,338 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-08-21 13:20:50,338 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-08-21 13:20:50,338 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-08-21 13:20:50,338 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 13:20:50,339 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 13:20:50,339 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-08-21 13:20:50,339 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-08-21 13:20:50,339 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-08-21 13:20:50,339 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-08-21 13:20:50,339 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-08-21 13:20:50,340 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-08-21 13:20:50,340 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-08-21 13:20:50,340 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-08-21 13:20:50,340 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 13:20:50,340 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-21 13:20:50,340 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-08-21 13:20:50,340 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ Derived loop invariant: (#memory_$Pointer$ == \old(#memory_$Pointer$) && unknown-#memory_int-unknown == \old(unknown-#memory_int-unknown)) && #memory_$Pointer$ == \old(#memory_$Pointer$) - InvariantResult [Line: 600]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 613]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 576]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 622]: Loop Invariant Derived loop invariant: 2 <= len && 1 <= i - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 166 SDtfs, 215 SDslu, 274 SDs, 0 SdLazy, 463 SolverSat, 75 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 5 MinimizatonAttempts, 35 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 46 PreInvPairs, 60 NumberOfFragments, 109 HoareAnnotationTreeSize, 46 FomulaSimplifications, 16 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 22 FomulaSimplificationsInter, 115 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 145 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 9186 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 8/9 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 correct! Received shutdown request...