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/sll2n_prepend_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:04:05,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:04:05,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:04:05,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:04:05,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:04:05,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:04:05,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:04:05,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:04:05,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:04:05,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:04:05,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:04:05,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:04:05,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:04:05,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:04:05,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:04:05,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:04:05,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:04:05,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:04:05,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:04:05,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:04:05,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:04:05,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:04:05,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:04:05,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:04:05,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:04:05,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:04:05,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:04:05,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:04:05,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:04:05,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:04:05,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:04:05,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:04:05,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:04:05,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:04:05,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:04:05,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:04:05,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:04:05,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:04:05,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:04:05,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:04:05,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:04:05,610 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 [2019-10-15 01:04:05,624 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:04:05,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:04:05,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:04:05,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:04:05,626 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:04:05,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:04:05,627 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:04:05,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:04:05,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:04:05,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:04:05,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:04:05,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:04:05,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:04:05,628 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:04:05,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:04:05,628 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:04:05,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:04:05,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:04:05,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:04:05,629 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:04:05,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:04:05,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:04:05,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:04:05,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:04:05,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:04:05,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:04:05,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:04:05,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:04:05,631 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 [2019-10-15 01:04:05,908 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:04:05,928 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:04:05,933 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:04:05,934 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:04:05,935 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:04:05,936 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_prepend_unequal.i [2019-10-15 01:04:06,011 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b35a3b00e/e1accc3283944c2e85d17f6a90a1552f/FLAGfe8a8fbac [2019-10-15 01:04:06,530 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:04:06,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_prepend_unequal.i [2019-10-15 01:04:06,544 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b35a3b00e/e1accc3283944c2e85d17f6a90a1552f/FLAGfe8a8fbac [2019-10-15 01:04:06,798 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b35a3b00e/e1accc3283944c2e85d17f6a90a1552f [2019-10-15 01:04:06,808 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:04:06,810 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:04:06,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:04:06,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:04:06,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:04:06,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:04:06" (1/1) ... [2019-10-15 01:04:06,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b5def57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:06, skipping insertion in model container [2019-10-15 01:04:06,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:04:06" (1/1) ... [2019-10-15 01:04:06,826 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:04:06,871 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:04:07,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:04:07,377 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:04:07,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:04:07,492 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:04:07,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:07 WrapperNode [2019-10-15 01:04:07,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:04:07,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:04:07,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:04:07,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:04:07,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:07" (1/1) ... [2019-10-15 01:04:07,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:07" (1/1) ... [2019-10-15 01:04:07,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:07" (1/1) ... [2019-10-15 01:04:07,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:07" (1/1) ... [2019-10-15 01:04:07,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:07" (1/1) ... [2019-10-15 01:04:07,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:07" (1/1) ... [2019-10-15 01:04:07,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:07" (1/1) ... [2019-10-15 01:04:07,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:04:07,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:04:07,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:04:07,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:04:07,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:07" (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 [2019-10-15 01:04:07,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:04:07,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:04:07,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 01:04:07,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 01:04:07,608 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-15 01:04:07,608 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-15 01:04:07,609 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-10-15 01:04:07,609 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-10-15 01:04:07,609 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_prepend [2019-10-15 01:04:07,609 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:04:07,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:04:07,610 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 01:04:07,610 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 01:04:07,610 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 01:04:07,610 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 01:04:07,610 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 01:04:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 01:04:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 01:04:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 01:04:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 01:04:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 01:04:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 01:04:07,612 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 01:04:07,612 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 01:04:07,612 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 01:04:07,612 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 01:04:07,612 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 01:04:07,613 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 01:04:07,613 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 01:04:07,613 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 01:04:07,613 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 01:04:07,613 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 01:04:07,613 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 01:04:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 01:04:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 01:04:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 01:04:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 01:04:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 01:04:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 01:04:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 01:04:07,615 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 01:04:07,615 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 01:04:07,615 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 01:04:07,615 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 01:04:07,615 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 01:04:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 01:04:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 01:04:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 01:04:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 01:04:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 01:04:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 01:04:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 01:04:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 01:04:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 01:04:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 01:04:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 01:04:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 01:04:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 01:04:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 01:04:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 01:04:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 01:04:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 01:04:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 01:04:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:04:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 01:04:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 01:04:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:04:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 01:04:07,620 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 01:04:07,620 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 01:04:07,620 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 01:04:07,620 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 01:04:07,620 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 01:04:07,620 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 01:04:07,621 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 01:04:07,621 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 01:04:07,621 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:04:07,621 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 01:04:07,621 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 01:04:07,621 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 01:04:07,621 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 01:04:07,622 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 01:04:07,622 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 01:04:07,622 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 01:04:07,622 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 01:04:07,622 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 01:04:07,622 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 01:04:07,622 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 01:04:07,623 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 01:04:07,623 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 01:04:07,623 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 01:04:07,623 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 01:04:07,623 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 01:04:07,623 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 01:04:07,624 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 01:04:07,624 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 01:04:07,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 01:04:07,624 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 01:04:07,624 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 01:04:07,624 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 01:04:07,625 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 01:04:07,625 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 01:04:07,625 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 01:04:07,625 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 01:04:07,625 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 01:04:07,625 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 01:04:07,625 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 01:04:07,626 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 01:04:07,626 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 01:04:07,626 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 01:04:07,626 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 01:04:07,626 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 01:04:07,626 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 01:04:07,626 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 01:04:07,627 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 01:04:07,627 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 01:04:07,627 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-15 01:04:07,627 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-15 01:04:07,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:04:07,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:04:07,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:04:07,628 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-10-15 01:04:07,628 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-10-15 01:04:07,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:04:07,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:04:07,628 INFO L130 BoogieDeclarations]: Found specification of procedure sll_prepend [2019-10-15 01:04:07,629 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:04:07,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:04:07,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 01:04:07,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:04:07,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:04:07,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:04:08,050 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-15 01:04:08,233 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:04:08,233 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-15 01:04:08,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:04:08 BoogieIcfgContainer [2019-10-15 01:04:08,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:04:08,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:04:08,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:04:08,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:04:08,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:04:06" (1/3) ... [2019-10-15 01:04:08,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63383dd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:04:08, skipping insertion in model container [2019-10-15 01:04:08,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:04:07" (2/3) ... [2019-10-15 01:04:08,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63383dd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:04:08, skipping insertion in model container [2019-10-15 01:04:08,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:04:08" (3/3) ... [2019-10-15 01:04:08,243 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_prepend_unequal.i [2019-10-15 01:04:08,253 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:04:08,262 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:04:08,273 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:04:08,299 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:04:08,300 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:04:08,300 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:04:08,300 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:04:08,300 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:04:08,300 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:04:08,301 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:04:08,301 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:04:08,320 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2019-10-15 01:04:08,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-15 01:04:08,327 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:04:08,328 INFO L380 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] [2019-10-15 01:04:08,330 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:04:08,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:04:08,336 INFO L82 PathProgramCache]: Analyzing trace with hash 266861268, now seen corresponding path program 1 times [2019-10-15 01:04:08,346 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:04:08,346 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580136423] [2019-10-15 01:04:08,347 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:04:08,347 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:04:08,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:04:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:04:08,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:04:08,547 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580136423] [2019-10-15 01:04:08,549 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:04:08,549 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:04:08,549 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209676437] [2019-10-15 01:04:08,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:04:08,561 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:04:08,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:04:08,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:04:08,581 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2019-10-15 01:04:08,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:04:08,620 INFO L93 Difference]: Finished difference Result 82 states and 100 transitions. [2019-10-15 01:04:08,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:04:08,622 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2019-10-15 01:04:08,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:04:08,634 INFO L225 Difference]: With dead ends: 82 [2019-10-15 01:04:08,635 INFO L226 Difference]: Without dead ends: 34 [2019-10-15 01:04:08,644 INFO L600 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 [2019-10-15 01:04:08,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-15 01:04:08,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-10-15 01:04:08,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-15 01:04:08,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2019-10-15 01:04:08,699 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 27 [2019-10-15 01:04:08,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:04:08,700 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2019-10-15 01:04:08,700 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:04:08,700 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2019-10-15 01:04:08,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-15 01:04:08,702 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:04:08,703 INFO L380 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] [2019-10-15 01:04:08,703 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:04:08,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:04:08,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1567298356, now seen corresponding path program 1 times [2019-10-15 01:04:08,704 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:04:08,704 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297911766] [2019-10-15 01:04:08,705 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:04:08,705 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:04:08,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:04:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:04:08,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:04:08,916 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297911766] [2019-10-15 01:04:08,916 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:04:08,916 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:04:08,917 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865749509] [2019-10-15 01:04:08,921 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:04:08,922 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:04:08,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:04:08,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:04:08,923 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2019-10-15 01:04:09,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:04:09,008 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2019-10-15 01:04:09,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:04:09,010 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-10-15 01:04:09,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:04:09,013 INFO L225 Difference]: With dead ends: 60 [2019-10-15 01:04:09,013 INFO L226 Difference]: Without dead ends: 38 [2019-10-15 01:04:09,016 INFO L600 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 [2019-10-15 01:04:09,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-15 01:04:09,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2019-10-15 01:04:09,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-15 01:04:09,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2019-10-15 01:04:09,035 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 27 [2019-10-15 01:04:09,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:04:09,035 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2019-10-15 01:04:09,035 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:04:09,036 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2019-10-15 01:04:09,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-15 01:04:09,038 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:04:09,038 INFO L380 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] [2019-10-15 01:04:09,039 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:04:09,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:04:09,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1679873603, now seen corresponding path program 1 times [2019-10-15 01:04:09,039 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:04:09,040 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720257076] [2019-10-15 01:04:09,040 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:04:09,040 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:04:09,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:04:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:04:09,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 01:04:09,206 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720257076] [2019-10-15 01:04:09,207 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414824167] [2019-10-15 01:04:09,207 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 [2019-10-15 01:04:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:04:09,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 01:04:09,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:04:09,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:04:09,458 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:04:09,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 01:04:09,607 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1986312320] [2019-10-15 01:04:09,614 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 37 [2019-10-15 01:04:09,653 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 01:04:09,654 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 01:04:09,722 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-15 01:04:09,724 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 0. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 28 variables. [2019-10-15 01:04:09,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:04:09,727 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-15 01:04:09,778 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-15 01:04:09,778 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-15 01:04:09,780 INFO L553 sIntCurrentIteration]: We unified 35 AI predicates to 35 [2019-10-15 01:04:09,780 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-15 01:04:09,781 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:04:09,781 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6, 6, 6] total 8 [2019-10-15 01:04:09,790 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107904813] [2019-10-15 01:04:09,791 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:04:09,792 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-15 01:04:09,792 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-15 01:04:09,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:04:09,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:04:09,793 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 2 states. [2019-10-15 01:04:09,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:04:09,798 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2019-10-15 01:04:09,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:04:09,798 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 36 [2019-10-15 01:04:09,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:04:09,798 INFO L225 Difference]: With dead ends: 35 [2019-10-15 01:04:09,799 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:04:09,799 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:04:09,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:04:09,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:04:09,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:04:09,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:04:09,801 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2019-10-15 01:04:09,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:04:09,802 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:04:09,802 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:04:09,803 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:04:09,803 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:04:10,007 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:04:10,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 01:04:10,056 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:04:10,056 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:04:10,056 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:04:10,056 INFO L446 ceAbstractionStarter]: At program point L561(line 561) the Hoare annotation is: true [2019-10-15 01:04:10,057 INFO L446 ceAbstractionStarter]: At program point myexitENTRY(lines 560 562) the Hoare annotation is: true [2019-10-15 01:04:10,057 INFO L443 ceAbstractionStarter]: For program point myexitEXIT(lines 560 562) no Hoare annotation was computed. [2019-10-15 01:04:10,057 INFO L443 ceAbstractionStarter]: For program point sll_destroyEXIT(lines 581 587) no Hoare annotation was computed. [2019-10-15 01:04:10,057 INFO L446 ceAbstractionStarter]: At program point L582-2(lines 582 586) the Hoare annotation is: true [2019-10-15 01:04:10,057 INFO L446 ceAbstractionStarter]: At program point sll_destroyENTRY(lines 581 587) the Hoare annotation is: true [2019-10-15 01:04:10,057 INFO L443 ceAbstractionStarter]: For program point L582-3(lines 581 587) no Hoare annotation was computed. [2019-10-15 01:04:10,058 INFO L443 ceAbstractionStarter]: For program point __bswap_32ENTRY(lines 63 67) no Hoare annotation was computed. [2019-10-15 01:04:10,058 INFO L443 ceAbstractionStarter]: For program point __bswap_32FINAL(lines 63 67) no Hoare annotation was computed. [2019-10-15 01:04:10,058 INFO L443 ceAbstractionStarter]: For program point __bswap_32EXIT(lines 63 67) no Hoare annotation was computed. [2019-10-15 01:04:10,058 INFO L446 ceAbstractionStarter]: At program point L575(line 575) the Hoare annotation is: true [2019-10-15 01:04:10,058 INFO L443 ceAbstractionStarter]: For program point sll_createEXIT(lines 572 580) no Hoare annotation was computed. [2019-10-15 01:04:10,058 INFO L443 ceAbstractionStarter]: For program point L575-1(line 575) no Hoare annotation was computed. [2019-10-15 01:04:10,058 INFO L443 ceAbstractionStarter]: For program point L574-2(lines 574 578) no Hoare annotation was computed. [2019-10-15 01:04:10,058 INFO L446 ceAbstractionStarter]: At program point L574-3(lines 574 578) the Hoare annotation is: true [2019-10-15 01:04:10,059 INFO L443 ceAbstractionStarter]: For program point L574-4(lines 574 578) no Hoare annotation was computed. [2019-10-15 01:04:10,059 INFO L446 ceAbstractionStarter]: At program point sll_createENTRY(lines 572 580) the Hoare annotation is: true [2019-10-15 01:04:10,059 INFO L443 ceAbstractionStarter]: For program point sll_createFINAL(lines 572 580) no Hoare annotation was computed. [2019-10-15 01:04:10,059 INFO L443 ceAbstractionStarter]: For program point __bswap_64ENTRY(lines 68 72) no Hoare annotation was computed. [2019-10-15 01:04:10,059 INFO L443 ceAbstractionStarter]: For program point __bswap_64FINAL(lines 68 72) no Hoare annotation was computed. [2019-10-15 01:04:10,059 INFO L443 ceAbstractionStarter]: For program point __bswap_64EXIT(lines 68 72) no Hoare annotation was computed. [2019-10-15 01:04:10,059 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:04:10,060 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 01:04:10,060 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:04:10,060 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:04:10,060 INFO L443 ceAbstractionStarter]: For program point L607(lines 607 609) no Hoare annotation was computed. [2019-10-15 01:04:10,060 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 618) no Hoare annotation was computed. [2019-10-15 01:04:10,060 INFO L439 ceAbstractionStarter]: At program point L605-2(lines 605 612) the Hoare annotation is: false [2019-10-15 01:04:10,060 INFO L443 ceAbstractionStarter]: For program point L605-3(lines 593 620) no Hoare annotation was computed. [2019-10-15 01:04:10,061 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 593 620) no Hoare annotation was computed. [2019-10-15 01:04:10,061 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 593 620) no Hoare annotation was computed. [2019-10-15 01:04:10,061 INFO L446 ceAbstractionStarter]: At program point L616(line 616) the Hoare annotation is: true [2019-10-15 01:04:10,061 INFO L443 ceAbstractionStarter]: For program point L616-1(line 616) no Hoare annotation was computed. [2019-10-15 01:04:10,061 INFO L439 ceAbstractionStarter]: At program point L614(lines 593 620) the Hoare annotation is: false [2019-10-15 01:04:10,061 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 593 620) the Hoare annotation is: true [2019-10-15 01:04:10,062 INFO L443 ceAbstractionStarter]: For program point L600(lines 600 602) no Hoare annotation was computed. [2019-10-15 01:04:10,062 INFO L439 ceAbstractionStarter]: At program point L598(line 598) the Hoare annotation is: false [2019-10-15 01:04:10,062 INFO L443 ceAbstractionStarter]: For program point L598-1(line 598) no Hoare annotation was computed. [2019-10-15 01:04:10,062 INFO L439 ceAbstractionStarter]: At program point L596(line 596) the Hoare annotation is: false [2019-10-15 01:04:10,062 INFO L443 ceAbstractionStarter]: For program point L596-1(line 596) no Hoare annotation was computed. [2019-10-15 01:04:10,062 INFO L446 ceAbstractionStarter]: At program point node_createENTRY(lines 563 571) the Hoare annotation is: true [2019-10-15 01:04:10,063 INFO L443 ceAbstractionStarter]: For program point node_createFINAL(lines 563 571) no Hoare annotation was computed. [2019-10-15 01:04:10,063 INFO L446 ceAbstractionStarter]: At program point L566(line 566) the Hoare annotation is: true [2019-10-15 01:04:10,063 INFO L443 ceAbstractionStarter]: For program point node_createEXIT(lines 563 571) no Hoare annotation was computed. [2019-10-15 01:04:10,063 INFO L443 ceAbstractionStarter]: For program point L565(lines 565 567) no Hoare annotation was computed. [2019-10-15 01:04:10,063 INFO L443 ceAbstractionStarter]: For program point L565-1(lines 565 567) no Hoare annotation was computed. [2019-10-15 01:04:10,063 INFO L446 ceAbstractionStarter]: At program point L589(line 589) the Hoare annotation is: true [2019-10-15 01:04:10,064 INFO L443 ceAbstractionStarter]: For program point L589-1(line 589) no Hoare annotation was computed. [2019-10-15 01:04:10,064 INFO L443 ceAbstractionStarter]: For program point sll_prependFINAL(lines 588 592) no Hoare annotation was computed. [2019-10-15 01:04:10,064 INFO L446 ceAbstractionStarter]: At program point sll_prependENTRY(lines 588 592) the Hoare annotation is: true [2019-10-15 01:04:10,064 INFO L443 ceAbstractionStarter]: For program point sll_prependEXIT(lines 588 592) no Hoare annotation was computed. [2019-10-15 01:04:10,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:04:10 BoogieIcfgContainer [2019-10-15 01:04:10,073 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:04:10,081 INFO L168 Benchmark]: Toolchain (without parser) took 3267.41 ms. Allocated memory was 145.8 MB in the beginning and 237.5 MB in the end (delta: 91.8 MB). Free memory was 102.3 MB in the beginning and 111.2 MB in the end (delta: -8.9 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. [2019-10-15 01:04:10,085 INFO L168 Benchmark]: CDTParser took 1.20 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 01:04:10,089 INFO L168 Benchmark]: CACSL2BoogieTranslator took 682.31 ms. Allocated memory was 145.8 MB in the beginning and 204.5 MB in the end (delta: 58.7 MB). Free memory was 102.1 MB in the beginning and 167.2 MB in the end (delta: -65.2 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2019-10-15 01:04:10,090 INFO L168 Benchmark]: Boogie Preprocessor took 60.41 ms. Allocated memory is still 204.5 MB. Free memory was 167.2 MB in the beginning and 164.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-10-15 01:04:10,093 INFO L168 Benchmark]: RCFGBuilder took 680.51 ms. Allocated memory is still 204.5 MB. Free memory was 164.5 MB in the beginning and 117.7 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. [2019-10-15 01:04:10,094 INFO L168 Benchmark]: TraceAbstraction took 1837.88 ms. Allocated memory was 204.5 MB in the beginning and 237.5 MB in the end (delta: 33.0 MB). Free memory was 117.0 MB in the beginning and 111.2 MB in the end (delta: 5.8 MB). Peak memory consumption was 38.9 MB. Max. memory is 7.1 GB. [2019-10-15 01:04:10,100 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.20 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 682.31 ms. Allocated memory was 145.8 MB in the beginning and 204.5 MB in the end (delta: 58.7 MB). Free memory was 102.1 MB in the beginning and 167.2 MB in the end (delta: -65.2 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.41 ms. Allocated memory is still 204.5 MB. Free memory was 167.2 MB in the beginning and 164.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 680.51 ms. Allocated memory is still 204.5 MB. Free memory was 164.5 MB in the beginning and 117.7 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1837.88 ms. Allocated memory was 204.5 MB in the beginning and 237.5 MB in the end (delta: 33.0 MB). Free memory was 117.0 MB in the beginning and 111.2 MB in the end (delta: 5.8 MB). Peak memory consumption was 38.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 618]: 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: 561]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 574]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 582]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 605]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 54 locations, 1 error locations. Result: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 93 SDtfs, 15 SDslu, 88 SDs, 0 SdLazy, 18 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 20 LocationsWithAnnotation, 34 PreInvPairs, 35 NumberOfFragments, 20 HoareAnnotationTreeSize, 34 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 20 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 157 ConstructedInterpolants, 0 QuantifiedInterpolants, 8017 SizeOfPredicates, 2 NumberOfNonLiveVariables, 215 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 15/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 114, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9714285714285714, AVG_VARS_REMOVED_DURING_WEAKENING: 1.5714285714285714, AVG_WEAKENED_CONJUNCTS: 0.17142857142857143, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...