/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/list-simple/dll2c_append_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:31:14,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:31:14,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:31:14,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:31:14,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:31:14,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:31:14,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:31:14,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:31:14,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:31:14,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:31:14,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:31:14,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:31:14,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:31:14,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:31:14,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:31:14,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:31:14,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:31:14,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:31:14,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:31:14,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:31:14,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:31:14,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:31:14,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:31:14,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:31:14,422 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:31:14,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:31:14,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:31:14,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:31:14,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:31:14,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:31:14,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:31:14,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:31:14,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:31:14,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:31:14,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:31:14,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:31:14,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:31:14,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:31:14,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:31:14,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:31:14,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:31:14,434 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 [2019-11-07 00:31:14,462 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:31:14,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:31:14,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:31:14,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:31:14,465 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:31:14,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:31:14,466 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:31:14,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:31:14,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:31:14,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:31:14,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:31:14,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:31:14,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:31:14,468 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:31:14,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:31:14,468 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:31:14,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:31:14,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:31:14,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:31:14,469 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:31:14,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:31:14,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:31:14,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:31:14,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:31:14,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:31:14,470 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:31:14,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:31:14,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:31:14,471 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:31:14,781 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:31:14,796 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:31:14,800 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:31:14,801 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:31:14,802 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:31:14,802 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_append_equal.i [2019-11-07 00:31:14,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc7beaba1/8e2db4578613474fbc078058c56e2265/FLAG70e7788f9 [2019-11-07 00:31:15,483 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:31:15,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2c_append_equal.i [2019-11-07 00:31:15,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc7beaba1/8e2db4578613474fbc078058c56e2265/FLAG70e7788f9 [2019-11-07 00:31:15,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc7beaba1/8e2db4578613474fbc078058c56e2265 [2019-11-07 00:31:15,737 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:31:15,739 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:31:15,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:31:15,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:31:15,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:31:15,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:31:15" (1/1) ... [2019-11-07 00:31:15,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b94a41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:15, skipping insertion in model container [2019-11-07 00:31:15,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:31:15" (1/1) ... [2019-11-07 00:31:15,759 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:31:15,817 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:31:16,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:31:16,294 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:31:16,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:31:16,419 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:31:16,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:16 WrapperNode [2019-11-07 00:31:16,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:31:16,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:31:16,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:31:16,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:31:16,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:16" (1/1) ... [2019-11-07 00:31:16,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:16" (1/1) ... [2019-11-07 00:31:16,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:16" (1/1) ... [2019-11-07 00:31:16,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:16" (1/1) ... [2019-11-07 00:31:16,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:16" (1/1) ... [2019-11-07 00:31:16,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:16" (1/1) ... [2019-11-07 00:31:16,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:16" (1/1) ... [2019-11-07 00:31:16,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:31:16,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:31:16,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:31:16,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:31:16,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:16" (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 [2019-11-07 00:31:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:31:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:31:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-07 00:31:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-07 00:31:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-07 00:31:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-07 00:31:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2019-11-07 00:31:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2019-11-07 00:31:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_append [2019-11-07 00:31:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:31:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:31:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-07 00:31:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-07 00:31:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-07 00:31:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-07 00:31:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-07 00:31:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-07 00:31:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-07 00:31:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-07 00:31:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-07 00:31:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-07 00:31:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-07 00:31:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-07 00:31:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-07 00:31:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-07 00:31:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-07 00:31:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-07 00:31:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-07 00:31:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-07 00:31:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-07 00:31:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-07 00:31:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-07 00:31:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-07 00:31:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-07 00:31:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-07 00:31:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-07 00:31:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-07 00:31:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-07 00:31:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-07 00:31:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-07 00:31:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-07 00:31:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-07 00:31:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-07 00:31:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-07 00:31:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-07 00:31:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-07 00:31:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-07 00:31:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-07 00:31:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-07 00:31:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-07 00:31:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-07 00:31:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-07 00:31:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-07 00:31:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-07 00:31:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-07 00:31:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-07 00:31:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-07 00:31:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-07 00:31:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-07 00:31:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-07 00:31:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-07 00:31:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-07 00:31:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-07 00:31:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:31:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 00:31:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-07 00:31:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:31:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-07 00:31:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-07 00:31:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-07 00:31:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-07 00:31:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-07 00:31:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-07 00:31:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-07 00:31:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-07 00:31:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-07 00:31:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 00:31:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-07 00:31:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-07 00:31:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-07 00:31:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-07 00:31:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-07 00:31:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-07 00:31:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-07 00:31:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-07 00:31:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-07 00:31:16,555 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-07 00:31:16,555 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-07 00:31:16,555 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-07 00:31:16,555 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-07 00:31:16,555 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-07 00:31:16,555 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-07 00:31:16,556 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-07 00:31:16,556 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-07 00:31:16,556 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-07 00:31:16,556 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-07 00:31:16,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-07 00:31:16,557 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-07 00:31:16,557 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-07 00:31:16,557 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-07 00:31:16,557 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-07 00:31:16,557 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-07 00:31:16,557 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-07 00:31:16,558 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-07 00:31:16,558 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-07 00:31:16,558 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-07 00:31:16,558 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-07 00:31:16,558 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-07 00:31:16,558 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-07 00:31:16,558 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-07 00:31:16,559 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-07 00:31:16,559 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-07 00:31:16,559 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-07 00:31:16,559 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-07 00:31:16,559 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-07 00:31:16,559 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-07 00:31:16,559 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-07 00:31:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-07 00:31:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:31:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:31:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:31:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2019-11-07 00:31:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2019-11-07 00:31:16,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:31:16,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:31:16,561 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_append [2019-11-07 00:31:16,561 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:31:16,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:31:16,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 00:31:16,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:31:16,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:31:16,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:31:17,053 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-07 00:31:17,238 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:31:17,238 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-07 00:31:17,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:31:17 BoogieIcfgContainer [2019-11-07 00:31:17,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:31:17,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:31:17,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:31:17,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:31:17,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:31:15" (1/3) ... [2019-11-07 00:31:17,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5164245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:31:17, skipping insertion in model container [2019-11-07 00:31:17,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:16" (2/3) ... [2019-11-07 00:31:17,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5164245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:31:17, skipping insertion in model container [2019-11-07 00:31:17,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:31:17" (3/3) ... [2019-11-07 00:31:17,248 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_append_equal.i [2019-11-07 00:31:17,257 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:31:17,265 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:31:17,274 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:31:17,297 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:31:17,297 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:31:17,298 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:31:17,298 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:31:17,298 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:31:17,298 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:31:17,298 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:31:17,299 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:31:17,319 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-11-07 00:31:17,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-07 00:31:17,326 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:31:17,328 INFO L410 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, 1] [2019-11-07 00:31:17,330 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:31:17,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:31:17,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1733597986, now seen corresponding path program 1 times [2019-11-07 00:31:17,346 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:31:17,347 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908935646] [2019-11-07 00:31:17,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:31:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:17,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 00:31:17,569 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908935646] [2019-11-07 00:31:17,573 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:31:17,574 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:31:17,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120828673] [2019-11-07 00:31:17,585 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:31:17,587 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:31:17,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:31:17,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:31:17,605 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2019-11-07 00:31:17,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:31:17,640 INFO L93 Difference]: Finished difference Result 93 states and 115 transitions. [2019-11-07 00:31:17,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:31:17,641 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 36 [2019-11-07 00:31:17,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:31:17,652 INFO L225 Difference]: With dead ends: 93 [2019-11-07 00:31:17,653 INFO L226 Difference]: Without dead ends: 39 [2019-11-07 00:31:17,663 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:31:17,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-11-07 00:31:17,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-11-07 00:31:17,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-07 00:31:17,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2019-11-07 00:31:17,732 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 36 [2019-11-07 00:31:17,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:31:17,736 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2019-11-07 00:31:17,736 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:31:17,736 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2019-11-07 00:31:17,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-07 00:31:17,740 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:31:17,740 INFO L410 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, 1] [2019-11-07 00:31:17,740 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:31:17,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:31:17,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1013977802, now seen corresponding path program 1 times [2019-11-07 00:31:17,741 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:31:17,741 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206217087] [2019-11-07 00:31:17,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:31:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:17,928 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-07 00:31:17,929 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206217087] [2019-11-07 00:31:17,929 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:31:17,929 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:31:17,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717958813] [2019-11-07 00:31:17,931 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:31:17,932 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:31:17,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:31:17,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:31:17,933 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 5 states. [2019-11-07 00:31:17,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:31:17,995 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2019-11-07 00:31:17,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:31:17,997 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2019-11-07 00:31:17,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:31:17,998 INFO L225 Difference]: With dead ends: 68 [2019-11-07 00:31:17,998 INFO L226 Difference]: Without dead ends: 44 [2019-11-07 00:31:18,000 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:31:18,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-07 00:31:18,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2019-11-07 00:31:18,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-07 00:31:18,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2019-11-07 00:31:18,010 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 36 [2019-11-07 00:31:18,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:31:18,010 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2019-11-07 00:31:18,010 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:31:18,010 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2019-11-07 00:31:18,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-07 00:31:18,012 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:31:18,012 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:31:18,012 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:31:18,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:31:18,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1378107786, now seen corresponding path program 1 times [2019-11-07 00:31:18,013 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:31:18,013 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931902852] [2019-11-07 00:31:18,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:31:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:18,695 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 00:31:18,696 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931902852] [2019-11-07 00:31:18,696 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482453596] [2019-11-07 00:31:18,696 INFO L94 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 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:31:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:18,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 45 conjunts are in the unsatisfiable core [2019-11-07 00:31:18,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:31:19,135 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2019-11-07 00:31:19,136 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 00:31:19,143 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 00:31:19,144 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-07 00:31:19,145 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-11-07 00:31:21,763 WARN L191 SmtUtils]: Spent 1.56 s on a formula simplification that was a NOOP. DAG size: 23 [2019-11-07 00:31:25,124 WARN L191 SmtUtils]: Spent 1.87 s on a formula simplification that was a NOOP. DAG size: 29 [2019-11-07 00:31:25,155 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 00:31:25,163 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 00:31:25,164 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-11-07 00:31:25,164 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:40, output treesize:31 [2019-11-07 00:31:29,432 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 00:31:29,432 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:31:29,677 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 00:31:29,687 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 00:31:29,688 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-11-07 00:31:29,689 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:42, output treesize:32 [2019-11-07 00:31:31,250 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 00:31:31,264 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 00:31:31,265 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-11-07 00:31:31,266 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:54, output treesize:44 [2019-11-07 00:31:31,349 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:31:31,368 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-11-07 00:31:31,368 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 00:31:31,388 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 00:31:31,592 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:31:31,593 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.UnsupportedOperationException: alternation not yet supported: (forall ((v_dll_circular_append_~head.offset_BEFORE_CALL_2 Int) (v_dll_circular_append_~head.base_BEFORE_CALL_2 Int)) (exists ((v_node_create_~temp~0.offset_13 Int) (v_DerPreprocessor_3 Int) (v_node_create_~temp~0.base_11 Int)) (or (and (not (< v_node_create_~temp~0.base_11 (+ |#StackHeapBarrier| 1))) (= 0 (select (select (store |old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_11 (store (store (store (select |old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_11) v_node_create_~temp~0.offset_13 0) (+ v_node_create_~temp~0.offset_13 4) 0) (+ v_node_create_~temp~0.offset_13 8) v_DerPreprocessor_3)) v_dll_circular_append_~head.base_BEFORE_CALL_2) v_dll_circular_append_~head.offset_BEFORE_CALL_2))) (not (= (select (select |#memory_$Pointer$.base| v_dll_circular_append_~head.base_BEFORE_CALL_2) v_dll_circular_append_~head.offset_BEFORE_CALL_2) 0))))) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:178) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:83) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.UnsupportedOperationException: alternation not yet supported: (forall ((v_dll_circular_append_~head.offset_BEFORE_CALL_2 Int) (v_dll_circular_append_~head.base_BEFORE_CALL_2 Int)) (exists ((v_node_create_~temp~0.offset_13 Int) (v_DerPreprocessor_3 Int) (v_node_create_~temp~0.base_11 Int)) (or (and (not (< v_node_create_~temp~0.base_11 (+ |#StackHeapBarrier| 1))) (= 0 (select (select (store |old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_11 (store (store (store (select |old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_11) v_node_create_~temp~0.offset_13 0) (+ v_node_create_~temp~0.offset_13 4) 0) (+ v_node_create_~temp~0.offset_13 8) v_DerPreprocessor_3)) v_dll_circular_append_~head.base_BEFORE_CALL_2) v_dll_circular_append_~head.offset_BEFORE_CALL_2))) (not (= (select (select |#memory_$Pointer$.base| v_dll_circular_append_~head.base_BEFORE_CALL_2) v_dll_circular_append_~head.offset_BEFORE_CALL_2) 0))))) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyNonSddEliminations(ElimStorePlain.java:667) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:493) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:335) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:294) ... 21 more [2019-11-07 00:31:31,600 INFO L168 Benchmark]: Toolchain (without parser) took 15861.03 ms. Allocated memory was 144.7 MB in the beginning and 249.0 MB in the end (delta: 104.3 MB). Free memory was 101.8 MB in the beginning and 96.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 109.3 MB. Max. memory is 7.1 GB. [2019-11-07 00:31:31,602 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 00:31:31,603 INFO L168 Benchmark]: CACSL2BoogieTranslator took 678.39 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 101.6 MB in the beginning and 166.9 MB in the end (delta: -65.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2019-11-07 00:31:31,604 INFO L168 Benchmark]: Boogie Preprocessor took 59.98 ms. Allocated memory is still 202.4 MB. Free memory was 166.9 MB in the beginning and 164.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2019-11-07 00:31:31,608 INFO L168 Benchmark]: RCFGBuilder took 758.19 ms. Allocated memory is still 202.4 MB. Free memory was 163.5 MB in the beginning and 112.2 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. [2019-11-07 00:31:31,613 INFO L168 Benchmark]: TraceAbstraction took 14357.18 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 111.6 MB in the beginning and 96.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 61.4 MB. Max. memory is 7.1 GB. [2019-11-07 00:31:31,617 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 678.39 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 101.6 MB in the beginning and 166.9 MB in the end (delta: -65.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 59.98 ms. Allocated memory is still 202.4 MB. Free memory was 166.9 MB in the beginning and 164.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 758.19 ms. Allocated memory is still 202.4 MB. Free memory was 163.5 MB in the beginning and 112.2 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14357.18 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 111.6 MB in the beginning and 96.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 61.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.UnsupportedOperationException: alternation not yet supported: (forall ((v_dll_circular_append_~head.offset_BEFORE_CALL_2 Int) (v_dll_circular_append_~head.base_BEFORE_CALL_2 Int)) (exists ((v_node_create_~temp~0.offset_13 Int) (v_DerPreprocessor_3 Int) (v_node_create_~temp~0.base_11 Int)) (or (and (not (< v_node_create_~temp~0.base_11 (+ |#StackHeapBarrier| 1))) (= 0 (select (select (store |old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_11 (store (store (store (select |old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_11) v_node_create_~temp~0.offset_13 0) (+ v_node_create_~temp~0.offset_13 4) 0) (+ v_node_create_~temp~0.offset_13 8) v_DerPreprocessor_3)) v_dll_circular_append_~head.base_BEFORE_CALL_2) v_dll_circular_append_~head.offset_BEFORE_CALL_2))) (not (= (select (select |#memory_$Pointer$.base| v_dll_circular_append_~head.base_BEFORE_CALL_2) v_dll_circular_append_~head.offset_BEFORE_CALL_2) 0))))) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.UnsupportedOperationException: alternation not yet supported: (forall ((v_dll_circular_append_~head.offset_BEFORE_CALL_2 Int) (v_dll_circular_append_~head.base_BEFORE_CALL_2 Int)) (exists ((v_node_create_~temp~0.offset_13 Int) (v_DerPreprocessor_3 Int) (v_node_create_~temp~0.base_11 Int)) (or (and (not (< v_node_create_~temp~0.base_11 (+ |#StackHeapBarrier| 1))) (= 0 (select (select (store |old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_11 (store (store (store (select |old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_11) v_node_create_~temp~0.offset_13 0) (+ v_node_create_~temp~0.offset_13 4) 0) (+ v_node_create_~temp~0.offset_13 8) v_DerPreprocessor_3)) v_dll_circular_append_~head.base_BEFORE_CALL_2) v_dll_circular_append_~head.offset_BEFORE_CALL_2))) (not (= (select (select |#memory_$Pointer$.base| v_dll_circular_append_~head.base_BEFORE_CALL_2) v_dll_circular_append_~head.offset_BEFORE_CALL_2) 0))))): de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:302) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...