/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -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-d623d84 [2020-07-20 11:31:47,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:31:47,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:31:47,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:31:47,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:31:47,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:31:47,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:31:47,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:31:47,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:31:47,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:31:47,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:31:47,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:31:47,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:31:47,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:31:47,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:31:47,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:31:47,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:31:47,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:31:47,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:31:47,381 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:31:47,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:31:47,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:31:47,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:31:47,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:31:47,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 11:31:47,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 11:31:47,406 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 11:31:47,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 11:31:47,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 11:31:47,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 11:31:47,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 11:31:47,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 11:31:47,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 11:31:47,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 11:31:47,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 11:31:47,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 11:31:47,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 11:31:47,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 11:31:47,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:31:47,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:31:47,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:31:47,434 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 11:31:47,482 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:31:47,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:31:47,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:31:47,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:31:47,487 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:31:47,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:31:47,487 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:31:47,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:31:47,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:31:47,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:31:47,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:31:47,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:31:47,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:31:47,489 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:31:47,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:31:47,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:31:47,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:31:47,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:31:47,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:31:47,493 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:31:47,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:31:47,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:31:47,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:31:47,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:31:47,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:31:47,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:31:47,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:47,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:31:47,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:31:47,496 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 11:31:47,945 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:31:47,971 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:31:47,975 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:31:47,978 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:31:47,979 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:31:47,980 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_update_all_reverse.i [2020-07-20 11:31:48,087 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3902f79f/b18a543aaabe45c6a0e2a513f94518c0/FLAG9cdc9125a [2020-07-20 11:31:49,042 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:31:49,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_update_all_reverse.i [2020-07-20 11:31:49,072 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3902f79f/b18a543aaabe45c6a0e2a513f94518c0/FLAG9cdc9125a [2020-07-20 11:31:49,139 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3902f79f/b18a543aaabe45c6a0e2a513f94518c0 [2020-07-20 11:31:49,155 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:31:49,161 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:31:49,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:31:49,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:31:49,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:31:49,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:31:49" (1/1) ... [2020-07-20 11:31:49,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b2fa44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:49, skipping insertion in model container [2020-07-20 11:31:49,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:31:49" (1/1) ... [2020-07-20 11:31:49,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:31:49,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:31:50,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:31:50,101 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:31:50,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:31:50,247 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:31:50,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:50 WrapperNode [2020-07-20 11:31:50,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:31:50,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:31:50,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:31:50,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:31:50,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:50" (1/1) ... [2020-07-20 11:31:50,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:50" (1/1) ... [2020-07-20 11:31:50,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:50" (1/1) ... [2020-07-20 11:31:50,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:50" (1/1) ... [2020-07-20 11:31:50,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:50" (1/1) ... [2020-07-20 11:31:50,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:50" (1/1) ... [2020-07-20 11:31:50,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:50" (1/1) ... [2020-07-20 11:31:50,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:31:50,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:31:50,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:31:50,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:31:50,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-20 11:31:50,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:31:50,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:31:50,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-20 11:31:50,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-20 11:31:50,458 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-07-20 11:31:50,458 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-07-20 11:31:50,459 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-07-20 11:31:50,459 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2020-07-20 11:31:50,459 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_get_data_at [2020-07-20 11:31:50,459 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_update_at [2020-07-20 11:31:50,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:31:50,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:31:50,460 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-20 11:31:50,460 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-20 11:31:50,460 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-20 11:31:50,460 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-20 11:31:50,461 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-20 11:31:50,461 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-20 11:31:50,461 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-20 11:31:50,461 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-20 11:31:50,461 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-20 11:31:50,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-20 11:31:50,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-20 11:31:50,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-20 11:31:50,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-20 11:31:50,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-20 11:31:50,463 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-20 11:31:50,463 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-20 11:31:50,463 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-20 11:31:50,463 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-20 11:31:50,463 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-20 11:31:50,464 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-20 11:31:50,464 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-20 11:31:50,464 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-20 11:31:50,464 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-20 11:31:50,464 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-20 11:31:50,465 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-20 11:31:50,465 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-20 11:31:50,465 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-20 11:31:50,465 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-20 11:31:50,465 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-20 11:31:50,466 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-20 11:31:50,466 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-20 11:31:50,466 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-20 11:31:50,466 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-20 11:31:50,466 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-20 11:31:50,467 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-20 11:31:50,467 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-20 11:31:50,467 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-20 11:31:50,467 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-20 11:31:50,467 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-20 11:31:50,467 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-20 11:31:50,467 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-20 11:31:50,468 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-20 11:31:50,468 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-20 11:31:50,468 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-20 11:31:50,468 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-20 11:31:50,468 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-20 11:31:50,468 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-20 11:31:50,468 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-20 11:31:50,469 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-20 11:31:50,469 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-20 11:31:50,469 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-20 11:31:50,469 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-20 11:31:50,469 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 11:31:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 11:31:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-20 11:31:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 11:31:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-20 11:31:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-20 11:31:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-20 11:31:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-20 11:31:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-20 11:31:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 11:31:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-20 11:31:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-20 11:31:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-20 11:31:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 11:31:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-20 11:31:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-20 11:31:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-20 11:31:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-20 11:31:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-20 11:31:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-20 11:31:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-20 11:31:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-20 11:31:50,474 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-20 11:31:50,474 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-20 11:31:50,474 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-20 11:31:50,474 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-20 11:31:50,474 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-20 11:31:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-20 11:31:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-20 11:31:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-20 11:31:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-20 11:31:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-20 11:31:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-20 11:31:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-20 11:31:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-20 11:31:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-20 11:31:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-20 11:31:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-20 11:31:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-20 11:31:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-20 11:31:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-20 11:31:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-20 11:31:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-20 11:31:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-20 11:31:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-20 11:31:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-20 11:31:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-20 11:31:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-20 11:31:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-20 11:31:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-20 11:31:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-20 11:31:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-20 11:31:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-20 11:31:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-07-20 11:31:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-07-20 11:31:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 11:31:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 11:31:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 11:31:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-07-20 11:31:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2020-07-20 11:31:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 11:31:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 11:31:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure dll_get_data_at [2020-07-20 11:31:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 11:31:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure dll_update_at [2020-07-20 11:31:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:31:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:31:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:31:51,223 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-07-20 11:31:51,543 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:31:51,544 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-20 11:31:51,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:31:51 BoogieIcfgContainer [2020-07-20 11:31:51,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:31:51,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:31:51,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:31:51,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:31:51,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:31:49" (1/3) ... [2020-07-20 11:31:51,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e147ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:31:51, skipping insertion in model container [2020-07-20 11:31:51,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:31:50" (2/3) ... [2020-07-20 11:31:51,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e147ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:31:51, skipping insertion in model container [2020-07-20 11:31:51,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:31:51" (3/3) ... [2020-07-20 11:31:51,567 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_update_all_reverse.i [2020-07-20 11:31:51,585 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:31:51,600 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:31:51,623 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:31:51,655 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:31:51,656 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:31:51,656 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:31:51,657 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:31:51,657 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:31:51,657 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:31:51,657 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:31:51,657 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:31:51,689 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-07-20 11:31:51,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 11:31:51,701 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:31:51,703 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] [2020-07-20 11:31:51,704 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:31:51,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:31:51,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1303429635, now seen corresponding path program 1 times [2020-07-20 11:31:51,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:31:51,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001801110] [2020-07-20 11:31:51,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:31:52,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 11:31:52,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:31:52,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:31:52,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:31:52,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001801110] [2020-07-20 11:31:52,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:31:52,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 11:31:52,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109102189] [2020-07-20 11:31:52,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 11:31:52,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:31:52,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 11:31:52,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:31:52,237 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 2 states. [2020-07-20 11:31:52,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:31:52,303 INFO L93 Difference]: Finished difference Result 86 states and 113 transitions. [2020-07-20 11:31:52,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 11:31:52,306 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-07-20 11:31:52,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:31:52,329 INFO L225 Difference]: With dead ends: 86 [2020-07-20 11:31:52,330 INFO L226 Difference]: Without dead ends: 38 [2020-07-20 11:31:52,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:31:52,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-20 11:31:52,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-07-20 11:31:52,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-20 11:31:52,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-07-20 11:31:52,407 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 25 [2020-07-20 11:31:52,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:31:52,408 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-07-20 11:31:52,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 11:31:52,408 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-07-20 11:31:52,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 11:31:52,410 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:31:52,410 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] [2020-07-20 11:31:52,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:52,628 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:31:52,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:31:52,629 INFO L82 PathProgramCache]: Analyzing trace with hash 2048382207, now seen corresponding path program 1 times [2020-07-20 11:31:52,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:31:52,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113119927] [2020-07-20 11:31:52,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:31:52,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:31:52,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:31:52,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:31:52,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:31:52,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113119927] [2020-07-20 11:31:52,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:31:52,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:31:52,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687341043] [2020-07-20 11:31:52,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:31:52,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:31:52,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:31:52,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:31:52,896 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 5 states. [2020-07-20 11:31:52,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:31:52,989 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-07-20 11:31:52,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:31:52,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-07-20 11:31:52,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:31:52,992 INFO L225 Difference]: With dead ends: 68 [2020-07-20 11:31:52,992 INFO L226 Difference]: Without dead ends: 43 [2020-07-20 11:31:52,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:31:52,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-20 11:31:53,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-07-20 11:31:53,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-20 11:31:53,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-07-20 11:31:53,004 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 25 [2020-07-20 11:31:53,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:31:53,005 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-07-20 11:31:53,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:31:53,006 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-07-20 11:31:53,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 11:31:53,007 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:31:53,007 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] [2020-07-20 11:31:53,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:53,221 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:31:53,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:31:53,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1036290808, now seen corresponding path program 1 times [2020-07-20 11:31:53,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:31:53,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407194608] [2020-07-20 11:31:53,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:31:53,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:31:53,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:31:53,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:31:53,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:31:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:31:53,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407194608] [2020-07-20 11:31:53,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:31:53,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-07-20 11:31:53,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381173083] [2020-07-20 11:31:53,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 11:31:53,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:31:53,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 11:31:53,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-07-20 11:31:53,573 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 8 states. [2020-07-20 11:31:53,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:31:53,661 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2020-07-20 11:31:53,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:31:53,662 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-07-20 11:31:53,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:31:53,663 INFO L225 Difference]: With dead ends: 73 [2020-07-20 11:31:53,664 INFO L226 Difference]: Without dead ends: 48 [2020-07-20 11:31:53,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-07-20 11:31:53,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-20 11:31:53,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-07-20 11:31:53,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 11:31:53,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2020-07-20 11:31:53,676 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 30 [2020-07-20 11:31:53,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:31:53,676 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2020-07-20 11:31:53,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 11:31:53,677 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2020-07-20 11:31:53,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-20 11:31:53,679 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:31:53,679 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-07-20 11:31:53,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:53,895 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:31:53,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:31:53,895 INFO L82 PathProgramCache]: Analyzing trace with hash 783774367, now seen corresponding path program 2 times [2020-07-20 11:31:53,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:31:53,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912797599] [2020-07-20 11:31:53,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:31:54,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 11:31:54,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:31:54,142 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-20 11:31:54,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:31:54,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912797599] [2020-07-20 11:31:54,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:31:54,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 11:31:54,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918078269] [2020-07-20 11:31:54,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 11:31:54,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:31:54,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 11:31:54,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:31:54,146 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 4 states. [2020-07-20 11:31:54,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:31:54,199 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2020-07-20 11:31:54,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 11:31:54,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-07-20 11:31:54,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:31:54,201 INFO L225 Difference]: With dead ends: 49 [2020-07-20 11:31:54,201 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 11:31:54,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:31:54,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 11:31:54,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 11:31:54,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 11:31:54,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 11:31:54,204 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-07-20 11:31:54,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:31:54,204 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 11:31:54,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 11:31:54,205 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 11:31:54,205 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 11:31:54,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:31:54,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 11:31:54,556 INFO L271 CegarLoopResult]: At program point L607-2(lines 607 610) the Hoare annotation is: true [2020-07-20 11:31:54,556 INFO L268 CegarLoopResult]: For program point L607-3(lines 607 610) no Hoare annotation was computed. [2020-07-20 11:31:54,556 INFO L271 CegarLoopResult]: At program point dll_update_atENTRY(lines 606 612) the Hoare annotation is: true [2020-07-20 11:31:54,557 INFO L268 CegarLoopResult]: For program point dll_update_atEXIT(lines 606 612) no Hoare annotation was computed. [2020-07-20 11:31:54,557 INFO L268 CegarLoopResult]: For program point dll_update_atFINAL(lines 606 612) no Hoare annotation was computed. [2020-07-20 11:31:54,557 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:31:54,557 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:31:54,557 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:31:54,557 INFO L271 CegarLoopResult]: At program point myexitENTRY(lines 561 563) the Hoare annotation is: true [2020-07-20 11:31:54,558 INFO L268 CegarLoopResult]: For program point myexitEXIT(lines 561 563) no Hoare annotation was computed. [2020-07-20 11:31:54,558 INFO L271 CegarLoopResult]: At program point L562(line 562) the Hoare annotation is: true [2020-07-20 11:31:54,558 INFO L268 CegarLoopResult]: For program point L578-1(lines 578 580) no Hoare annotation was computed. [2020-07-20 11:31:54,558 INFO L271 CegarLoopResult]: At program point dll_createENTRY(lines 574 591) the Hoare annotation is: true [2020-07-20 11:31:54,558 INFO L271 CegarLoopResult]: At program point L576-2(lines 576 589) the Hoare annotation is: true [2020-07-20 11:31:54,559 INFO L268 CegarLoopResult]: For program point L576-3(lines 576 589) no Hoare annotation was computed. [2020-07-20 11:31:54,559 INFO L268 CegarLoopResult]: For program point dll_createFINAL(lines 574 591) no Hoare annotation was computed. [2020-07-20 11:31:54,559 INFO L271 CegarLoopResult]: At program point L579(line 579) the Hoare annotation is: true [2020-07-20 11:31:54,559 INFO L268 CegarLoopResult]: For program point dll_createEXIT(lines 574 591) no Hoare annotation was computed. [2020-07-20 11:31:54,559 INFO L268 CegarLoopResult]: For program point L584(lines 584 586) no Hoare annotation was computed. [2020-07-20 11:31:54,559 INFO L268 CegarLoopResult]: For program point L584-2(lines 584 586) no Hoare annotation was computed. [2020-07-20 11:31:54,560 INFO L268 CegarLoopResult]: For program point L578(lines 578 580) no Hoare annotation was computed. [2020-07-20 11:31:54,560 INFO L268 CegarLoopResult]: For program point __bswap_32ENTRY(lines 63 67) no Hoare annotation was computed. [2020-07-20 11:31:54,560 INFO L268 CegarLoopResult]: For program point __bswap_32FINAL(lines 63 67) no Hoare annotation was computed. [2020-07-20 11:31:54,560 INFO L268 CegarLoopResult]: For program point __bswap_32EXIT(lines 63 67) no Hoare annotation was computed. [2020-07-20 11:31:54,560 INFO L268 CegarLoopResult]: For program point __bswap_64ENTRY(lines 68 72) no Hoare annotation was computed. [2020-07-20 11:31:54,560 INFO L268 CegarLoopResult]: For program point __bswap_64FINAL(lines 68 72) no Hoare annotation was computed. [2020-07-20 11:31:54,560 INFO L268 CegarLoopResult]: For program point __bswap_64EXIT(lines 68 72) no Hoare annotation was computed. [2020-07-20 11:31:54,561 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:31:54,561 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 11:31:54,561 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:31:54,561 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:31:54,562 INFO L271 CegarLoopResult]: At program point L600-2(lines 600 603) the Hoare annotation is: true [2020-07-20 11:31:54,562 INFO L268 CegarLoopResult]: For program point L600-3(lines 600 603) no Hoare annotation was computed. [2020-07-20 11:31:54,562 INFO L268 CegarLoopResult]: For program point dll_get_data_atFINAL(lines 599 605) no Hoare annotation was computed. [2020-07-20 11:31:54,562 INFO L271 CegarLoopResult]: At program point dll_get_data_atENTRY(lines 599 605) the Hoare annotation is: true [2020-07-20 11:31:54,562 INFO L268 CegarLoopResult]: For program point dll_get_data_atEXIT(lines 599 605) no Hoare annotation was computed. [2020-07-20 11:31:54,562 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 613 632) no Hoare annotation was computed. [2020-07-20 11:31:54,563 INFO L268 CegarLoopResult]: For program point L628(line 628) no Hoare annotation was computed. [2020-07-20 11:31:54,563 INFO L264 CegarLoopResult]: At program point L624(line 624) the Hoare annotation is: false [2020-07-20 11:31:54,563 INFO L268 CegarLoopResult]: For program point L624-1(line 624) no Hoare annotation was computed. [2020-07-20 11:31:54,563 INFO L268 CegarLoopResult]: For program point L624-2(lines 624 626) no Hoare annotation was computed. [2020-07-20 11:31:54,563 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 613 632) no Hoare annotation was computed. [2020-07-20 11:31:54,564 INFO L264 CegarLoopResult]: At program point L620(line 620) the Hoare annotation is: (<= 2 main_~len~0) [2020-07-20 11:31:54,564 INFO L268 CegarLoopResult]: For program point L622-2(lines 622 627) no Hoare annotation was computed. [2020-07-20 11:31:54,564 INFO L268 CegarLoopResult]: For program point L620-1(lines 618 621) no Hoare annotation was computed. [2020-07-20 11:31:54,565 INFO L264 CegarLoopResult]: At program point L622-3(lines 622 627) the Hoare annotation is: (and (<= 2 main_~len~0) (<= 1 main_~i~0)) [2020-07-20 11:31:54,565 INFO L271 CegarLoopResult]: At program point L622-4(lines 622 627) the Hoare annotation is: true [2020-07-20 11:31:54,565 INFO L264 CegarLoopResult]: At program point L616(line 616) the Hoare annotation is: (<= 2 main_~len~0) [2020-07-20 11:31:54,565 INFO L264 CegarLoopResult]: At program point L618-2(lines 618 621) the Hoare annotation is: (<= 2 main_~len~0) [2020-07-20 11:31:54,565 INFO L268 CegarLoopResult]: For program point L616-1(line 616) no Hoare annotation was computed. [2020-07-20 11:31:54,565 INFO L268 CegarLoopResult]: For program point L618-3(lines 618 621) no Hoare annotation was computed. [2020-07-20 11:31:54,566 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 630) no Hoare annotation was computed. [2020-07-20 11:31:54,566 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 613 632) the Hoare annotation is: true [2020-07-20 11:31:54,566 INFO L264 CegarLoopResult]: At program point L625(lines 613 632) the Hoare annotation is: false [2020-07-20 11:31:54,567 INFO L268 CegarLoopResult]: For program point dll_destroyEXIT(lines 592 598) no Hoare annotation was computed. [2020-07-20 11:31:54,567 INFO L271 CegarLoopResult]: At program point dll_destroyENTRY(lines 592 598) the Hoare annotation is: true [2020-07-20 11:31:54,567 INFO L271 CegarLoopResult]: At program point L593-2(lines 593 597) the Hoare annotation is: true [2020-07-20 11:31:54,567 INFO L268 CegarLoopResult]: For program point L593-3(lines 592 598) no Hoare annotation was computed. [2020-07-20 11:31:54,567 INFO L268 CegarLoopResult]: For program point node_createENTRY(lines 564 573) no Hoare annotation was computed. [2020-07-20 11:31:54,567 INFO L268 CegarLoopResult]: For program point node_createFINAL(lines 564 573) no Hoare annotation was computed. [2020-07-20 11:31:54,568 INFO L268 CegarLoopResult]: For program point L567(line 567) no Hoare annotation was computed. [2020-07-20 11:31:54,568 INFO L268 CegarLoopResult]: For program point L566(lines 566 568) no Hoare annotation was computed. [2020-07-20 11:31:54,568 INFO L268 CegarLoopResult]: For program point node_createEXIT(lines 564 573) no Hoare annotation was computed. [2020-07-20 11:31:54,568 INFO L268 CegarLoopResult]: For program point L566-1(lines 566 568) no Hoare annotation was computed. [2020-07-20 11:31:54,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:31:54 BoogieIcfgContainer [2020-07-20 11:31:54,591 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:31:54,595 INFO L168 Benchmark]: Toolchain (without parser) took 5436.21 ms. Allocated memory was 144.7 MB in the beginning and 252.2 MB in the end (delta: 107.5 MB). Free memory was 100.2 MB in the beginning and 186.2 MB in the end (delta: -86.0 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-07-20 11:31:54,596 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 144.7 MB. Free memory is still 119.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 11:31:54,598 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1084.91 ms. Allocated memory was 144.7 MB in the beginning and 203.9 MB in the end (delta: 59.2 MB). Free memory was 99.8 MB in the beginning and 169.7 MB in the end (delta: -69.9 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-07-20 11:31:54,599 INFO L168 Benchmark]: Boogie Preprocessor took 106.76 ms. Allocated memory is still 203.9 MB. Free memory was 169.7 MB in the beginning and 166.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-07-20 11:31:54,600 INFO L168 Benchmark]: RCFGBuilder took 1192.00 ms. Allocated memory is still 203.9 MB. Free memory was 166.7 MB in the beginning and 118.0 MB in the end (delta: 48.7 MB). Peak memory consumption was 48.7 MB. Max. memory is 7.1 GB. [2020-07-20 11:31:54,601 INFO L168 Benchmark]: TraceAbstraction took 3037.36 ms. Allocated memory was 203.9 MB in the beginning and 252.2 MB in the end (delta: 48.2 MB). Free memory was 117.0 MB in the beginning and 186.2 MB in the end (delta: -69.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 11:31:54,606 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 144.7 MB. Free memory is still 119.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1084.91 ms. Allocated memory was 144.7 MB in the beginning and 203.9 MB in the end (delta: 59.2 MB). Free memory was 99.8 MB in the beginning and 169.7 MB in the end (delta: -69.9 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.76 ms. Allocated memory is still 203.9 MB. Free memory was 169.7 MB in the beginning and 166.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1192.00 ms. Allocated memory is still 203.9 MB. Free memory was 166.7 MB in the beginning and 118.0 MB in the end (delta: 48.7 MB). Peak memory consumption was 48.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3037.36 ms. Allocated memory was 203.9 MB in the beginning and 252.2 MB in the end (delta: 48.2 MB). Free memory was 117.0 MB in the beginning and 186.2 MB in the end (delta: -69.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * 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 Derived loop invariant: 1 - 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: 2.7s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 157 SDtfs, 70 SDslu, 241 SDs, 0 SdLazy, 62 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 144 GetRequests, 127 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s 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, 4 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 38 PreInvPairs, 46 NumberOfFragments, 34 HoareAnnotationTreeSize, 38 FomulaSimplifications, 16 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 22 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 6348 SizeOfPredicates, 6 NumberOfNonLiveVariables, 506 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 7/9 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...