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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/list-simple/sll2c_prepend_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:26:44,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:26:44,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:26:44,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:26:44,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:26:44,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:26:44,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:26:44,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:26:44,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:26:44,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:26:44,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:26:44,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:26:44,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:26:44,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:26:44,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:26:44,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:26:44,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:26:44,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:26:44,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:26:44,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:26:44,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:26:44,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:26:44,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:26:44,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:26:44,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 13:26:44,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 13:26:44,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 13:26:44,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 13:26:44,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 13:26:44,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 13:26:44,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:26:44,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:26:44,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:26:44,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:26:44,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:26:44,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:26:44,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:26:44,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:26:44,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:26:44,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:26:44,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:26:44,588 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 [2019-10-07 13:26:44,622 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:26:44,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:26:44,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:26:44,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:26:44,626 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:26:44,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:26:44,627 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:26:44,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:26:44,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:26:44,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:26:44,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:26:44,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:26:44,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:26:44,628 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:26:44,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:26:44,628 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:26:44,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:26:44,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:26:44,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:26:44,630 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:26:44,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:26:44,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:26:44,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:26:44,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:26:44,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:26:44,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:26:44,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:26:44,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:26:44,636 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 13:26:44,932 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:26:44,955 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:26:44,958 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:26:44,960 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:26:44,960 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:26:44,961 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_prepend_equal.i [2019-10-07 13:26:45,040 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1133fcef7/ec26f2f337344f3d86498e7900ca99ca/FLAG7d27bf3e2 [2019-10-07 13:26:45,550 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:26:45,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_prepend_equal.i [2019-10-07 13:26:45,562 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1133fcef7/ec26f2f337344f3d86498e7900ca99ca/FLAG7d27bf3e2 [2019-10-07 13:26:45,873 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1133fcef7/ec26f2f337344f3d86498e7900ca99ca [2019-10-07 13:26:45,883 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:26:45,885 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:26:45,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:26:45,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:26:45,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:26:45,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:26:45" (1/1) ... [2019-10-07 13:26:45,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f461a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:26:45, skipping insertion in model container [2019-10-07 13:26:45,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:26:45" (1/1) ... [2019-10-07 13:26:45,899 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:26:45,937 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:26:46,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:26:46,403 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:26:46,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:26:46,516 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:26:46,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:26:46 WrapperNode [2019-10-07 13:26:46,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:26:46,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:26:46,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:26:46,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:26:46,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:26:46" (1/1) ... [2019-10-07 13:26:46,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:26:46" (1/1) ... [2019-10-07 13:26:46,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:26:46" (1/1) ... [2019-10-07 13:26:46,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:26:46" (1/1) ... [2019-10-07 13:26:46,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:26:46" (1/1) ... [2019-10-07 13:26:46,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:26:46" (1/1) ... [2019-10-07 13:26:46,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:26:46" (1/1) ... [2019-10-07 13:26:46,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:26:46,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:26:46,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:26:46,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:26:46,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:26:46" (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 [2019-10-07 13:26:46,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:26:46,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:26:46,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-07 13:26:46,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-07 13:26:46,636 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-07 13:26:46,637 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-07 13:26:46,637 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-10-07 13:26:46,637 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2019-10-07 13:26:46,637 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_prepend [2019-10-07 13:26:46,637 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:26:46,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:26:46,638 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-07 13:26:46,638 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-07 13:26:46,638 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-07 13:26:46,638 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-07 13:26:46,639 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-07 13:26:46,639 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-07 13:26:46,639 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-07 13:26:46,639 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-07 13:26:46,639 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-07 13:26:46,639 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-07 13:26:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-07 13:26:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-07 13:26:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-07 13:26:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-07 13:26:46,640 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-07 13:26:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-07 13:26:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-07 13:26:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-07 13:26:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-07 13:26:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-07 13:26:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-07 13:26:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-07 13:26:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-07 13:26:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-07 13:26:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-07 13:26:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-07 13:26:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-07 13:26:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-07 13:26:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-07 13:26:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-07 13:26:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-07 13:26:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-07 13:26:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-07 13:26:46,644 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-07 13:26:46,644 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-07 13:26:46,644 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-07 13:26:46,644 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-07 13:26:46,644 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-07 13:26:46,644 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-07 13:26:46,645 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-07 13:26:46,645 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-07 13:26:46,645 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-07 13:26:46,645 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-07 13:26:46,645 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-07 13:26:46,645 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-07 13:26:46,646 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-07 13:26:46,646 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-07 13:26:46,646 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-07 13:26:46,646 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-07 13:26:46,646 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-07 13:26:46,646 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-07 13:26:46,647 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-07 13:26:46,647 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 13:26:46,647 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-07 13:26:46,647 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-07 13:26:46,647 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 13:26:46,648 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-07 13:26:46,648 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-07 13:26:46,648 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-07 13:26:46,648 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-07 13:26:46,648 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-07 13:26:46,648 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-07 13:26:46,648 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-07 13:26:46,649 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-07 13:26:46,649 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-07 13:26:46,649 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 13:26:46,649 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-07 13:26:46,649 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-07 13:26:46,650 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-07 13:26:46,650 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-07 13:26:46,650 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-07 13:26:46,650 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-07 13:26:46,650 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-07 13:26:46,650 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-07 13:26:46,650 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-07 13:26:46,651 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-07 13:26:46,651 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-07 13:26:46,651 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-07 13:26:46,651 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-07 13:26:46,651 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-07 13:26:46,651 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-07 13:26:46,652 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-07 13:26:46,652 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-07 13:26:46,652 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-07 13:26:46,652 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-07 13:26:46,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-07 13:26:46,652 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-07 13:26:46,652 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-07 13:26:46,653 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-07 13:26:46,653 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-07 13:26:46,653 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-07 13:26:46,653 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-07 13:26:46,653 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-07 13:26:46,653 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-07 13:26:46,653 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-07 13:26:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-07 13:26:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-07 13:26:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-07 13:26:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-07 13:26:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-07 13:26:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-07 13:26:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-07 13:26:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-07 13:26:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-07 13:26:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-07 13:26:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-07 13:26:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-07 13:26:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 13:26:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 13:26:46,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 13:26:46,656 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-10-07 13:26:46,656 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2019-10-07 13:26:46,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 13:26:46,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 13:26:46,656 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_prepend [2019-10-07 13:26:46,657 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:26:46,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 13:26:46,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-07 13:26:46,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 13:26:46,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:26:46,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:26:47,029 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-07 13:26:47,315 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:26:47,316 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-07 13:26:47,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:26:47 BoogieIcfgContainer [2019-10-07 13:26:47,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:26:47,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:26:47,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:26:47,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:26:47,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:26:45" (1/3) ... [2019-10-07 13:26:47,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341478c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:26:47, skipping insertion in model container [2019-10-07 13:26:47,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:26:46" (2/3) ... [2019-10-07 13:26:47,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341478c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:26:47, skipping insertion in model container [2019-10-07 13:26:47,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:26:47" (3/3) ... [2019-10-07 13:26:47,326 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_prepend_equal.i [2019-10-07 13:26:47,335 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:26:47,343 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:26:47,355 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:26:47,380 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:26:47,380 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:26:47,380 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:26:47,381 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:26:47,381 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:26:47,381 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:26:47,381 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:26:47,381 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:26:47,400 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2019-10-07 13:26:47,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-07 13:26:47,407 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:26:47,408 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:26:47,410 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:26:47,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:26:47,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1245868585, now seen corresponding path program 1 times [2019-10-07 13:26:47,425 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:26:47,425 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:26:47,425 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:26:47,426 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:26:47,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:26:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:26:47,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 13:26:47,683 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:26:47,687 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:26:47,688 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 13:26:47,694 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 13:26:47,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 13:26:47,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 13:26:47,711 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2019-10-07 13:26:47,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:26:47,747 INFO L93 Difference]: Finished difference Result 70 states and 87 transitions. [2019-10-07 13:26:47,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 13:26:47,748 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2019-10-07 13:26:47,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:26:47,759 INFO L225 Difference]: With dead ends: 70 [2019-10-07 13:26:47,759 INFO L226 Difference]: Without dead ends: 35 [2019-10-07 13:26:47,766 INFO L606 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 [2019-10-07 13:26:47,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-07 13:26:47,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-10-07 13:26:47,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-07 13:26:47,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2019-10-07 13:26:47,822 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 31 [2019-10-07 13:26:47,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:26:47,824 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2019-10-07 13:26:47,824 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 13:26:47,824 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2019-10-07 13:26:47,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-07 13:26:47,829 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:26:47,830 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:26:47,830 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:26:47,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:26:47,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1245854666, now seen corresponding path program 1 times [2019-10-07 13:26:47,832 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:26:47,832 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:26:47,832 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:26:47,832 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:26:47,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:26:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:26:48,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 13:26:48,027 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:26:48,028 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:26:48,028 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 13:26:48,030 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:26:48,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:26:48,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 13:26:48,031 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 5 states. [2019-10-07 13:26:48,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:26:48,111 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2019-10-07 13:26:48,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 13:26:48,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-10-07 13:26:48,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:26:48,113 INFO L225 Difference]: With dead ends: 61 [2019-10-07 13:26:48,113 INFO L226 Difference]: Without dead ends: 38 [2019-10-07 13:26:48,115 INFO L606 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 [2019-10-07 13:26:48,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-07 13:26:48,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2019-10-07 13:26:48,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-07 13:26:48,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2019-10-07 13:26:48,123 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 31 [2019-10-07 13:26:48,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:26:48,123 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2019-10-07 13:26:48,124 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:26:48,124 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2019-10-07 13:26:48,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-07 13:26:48,125 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:26:48,125 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 13:26:48,126 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:26:48,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:26:48,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1234219327, now seen corresponding path program 1 times [2019-10-07 13:26:48,126 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:26:48,127 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:26:48,127 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:26:48,127 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:26:48,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:26:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:26:48,642 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 13:26:48,643 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:26:48,643 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:26:48,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -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 [2019-10-07 13:26:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:26:48,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 45 conjunts are in the unsatisfiable core [2019-10-07 13:26:48,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:26:49,026 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 [2019-10-07 13:26:49,027 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-07 13:26:49,035 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 13:26:49,036 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-07 13:26:49,037 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-10-07 13:26:50,163 WARN L191 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 20 [2019-10-07 13:26:50,943 WARN L191 SmtUtils]: Spent 715.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-10-07 13:26:50,974 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-07 13:26:50,981 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 13:26:50,983 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. [2019-10-07 13:26:50,983 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:26 [2019-10-07 13:26:57,842 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 23 [2019-10-07 13:26:58,131 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 13:26:58,132 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:26:58,341 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-07 13:26:58,347 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 13:26:58,348 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. [2019-10-07 13:26:58,348 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:27 [2019-10-07 13:26:58,879 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-07 13:26:58,889 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 13:26:58,891 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. [2019-10-07 13:26:58,891 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:49, output treesize:39 [2019-10-07 13:26:58,956 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 13:26:58,978 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 [2019-10-07 13:26:58,979 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-07 13:26:59,001 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 13:26:59,204 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:26:59,205 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_sll_circular_prepend_~head.base_BEFORE_CALL_2 Int) (v_sll_circular_prepend_~head.offset_BEFORE_CALL_2 Int)) (exists ((v_node_create_~temp~0.offset_15 Int) (v_DerPreprocessor_3 Int) (v_node_create_~temp~0.base_13 Int)) (or (not (= (select (select |#memory_$Pointer$.base| v_sll_circular_prepend_~head.base_BEFORE_CALL_2) v_sll_circular_prepend_~head.offset_BEFORE_CALL_2) 0)) (and (not (< v_node_create_~temp~0.base_13 (+ |#StackHeapBarrier| 1))) (= 0 (select (select (store |old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_13 (store (store (select |old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_13) v_node_create_~temp~0.offset_15 0) (+ v_node_create_~temp~0.offset_15 4) v_DerPreprocessor_3)) v_sll_circular_prepend_~head.base_BEFORE_CALL_2) v_sll_circular_prepend_~head.offset_BEFORE_CALL_2)))))) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) 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_sll_circular_prepend_~head.base_BEFORE_CALL_2 Int) (v_sll_circular_prepend_~head.offset_BEFORE_CALL_2 Int)) (exists ((v_node_create_~temp~0.offset_15 Int) (v_DerPreprocessor_3 Int) (v_node_create_~temp~0.base_13 Int)) (or (not (= (select (select |#memory_$Pointer$.base| v_sll_circular_prepend_~head.base_BEFORE_CALL_2) v_sll_circular_prepend_~head.offset_BEFORE_CALL_2) 0)) (and (not (< v_node_create_~temp~0.base_13 (+ |#StackHeapBarrier| 1))) (= 0 (select (select (store |old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_13 (store (store (select |old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_13) v_node_create_~temp~0.offset_15 0) (+ v_node_create_~temp~0.offset_15 4) v_DerPreprocessor_3)) v_sll_circular_prepend_~head.base_BEFORE_CALL_2) v_sll_circular_prepend_~head.offset_BEFORE_CALL_2)))))) 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:336) 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:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 13:26:59,214 INFO L168 Benchmark]: Toolchain (without parser) took 13326.25 ms. Allocated memory was 147.3 MB in the beginning and 245.9 MB in the end (delta: 98.6 MB). Free memory was 102.7 MB in the beginning and 113.2 MB in the end (delta: -10.5 MB). Peak memory consumption was 88.1 MB. Max. memory is 7.1 GB. [2019-10-07 13:26:59,216 INFO L168 Benchmark]: CDTParser took 1.23 ms. Allocated memory is still 147.3 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 13:26:59,217 INFO L168 Benchmark]: CACSL2BoogieTranslator took 631.83 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 102.5 MB in the beginning and 170.5 MB in the end (delta: -68.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2019-10-07 13:26:59,220 INFO L168 Benchmark]: Boogie Preprocessor took 66.16 ms. Allocated memory is still 205.0 MB. Free memory was 170.5 MB in the beginning and 167.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2019-10-07 13:26:59,222 INFO L168 Benchmark]: RCFGBuilder took 733.23 ms. Allocated memory is still 205.0 MB. Free memory was 167.1 MB in the beginning and 110.8 MB in the end (delta: 56.3 MB). Peak memory consumption was 56.3 MB. Max. memory is 7.1 GB. [2019-10-07 13:26:59,223 INFO L168 Benchmark]: TraceAbstraction took 11890.35 ms. Allocated memory was 205.0 MB in the beginning and 245.9 MB in the end (delta: 40.9 MB). Free memory was 110.2 MB in the beginning and 114.9 MB in the end (delta: -4.7 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. [2019-10-07 13:26:59,232 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.23 ms. Allocated memory is still 147.3 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 631.83 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 102.5 MB in the beginning and 170.5 MB in the end (delta: -68.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.16 ms. Allocated memory is still 205.0 MB. Free memory was 170.5 MB in the beginning and 167.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 733.23 ms. Allocated memory is still 205.0 MB. Free memory was 167.1 MB in the beginning and 110.8 MB in the end (delta: 56.3 MB). Peak memory consumption was 56.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11890.35 ms. Allocated memory was 205.0 MB in the beginning and 245.9 MB in the end (delta: 40.9 MB). Free memory was 110.2 MB in the beginning and 114.9 MB in the end (delta: -4.7 MB). Peak memory consumption was 36.2 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_sll_circular_prepend_~head.base_BEFORE_CALL_2 Int) (v_sll_circular_prepend_~head.offset_BEFORE_CALL_2 Int)) (exists ((v_node_create_~temp~0.offset_15 Int) (v_DerPreprocessor_3 Int) (v_node_create_~temp~0.base_13 Int)) (or (not (= (select (select |#memory_$Pointer$.base| v_sll_circular_prepend_~head.base_BEFORE_CALL_2) v_sll_circular_prepend_~head.offset_BEFORE_CALL_2) 0)) (and (not (< v_node_create_~temp~0.base_13 (+ |#StackHeapBarrier| 1))) (= 0 (select (select (store |old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_13 (store (store (select |old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_13) v_node_create_~temp~0.offset_15 0) (+ v_node_create_~temp~0.offset_15 4) v_DerPreprocessor_3)) v_sll_circular_prepend_~head.base_BEFORE_CALL_2) v_sll_circular_prepend_~head.offset_BEFORE_CALL_2)))))) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.UnsupportedOperationException: alternation not yet supported: (forall ((v_sll_circular_prepend_~head.base_BEFORE_CALL_2 Int) (v_sll_circular_prepend_~head.offset_BEFORE_CALL_2 Int)) (exists ((v_node_create_~temp~0.offset_15 Int) (v_DerPreprocessor_3 Int) (v_node_create_~temp~0.base_13 Int)) (or (not (= (select (select |#memory_$Pointer$.base| v_sll_circular_prepend_~head.base_BEFORE_CALL_2) v_sll_circular_prepend_~head.offset_BEFORE_CALL_2) 0)) (and (not (< v_node_create_~temp~0.base_13 (+ |#StackHeapBarrier| 1))) (= 0 (select (select (store |old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_13 (store (store (select |old(#memory_$Pointer$.base)| v_node_create_~temp~0.base_13) v_node_create_~temp~0.offset_15 0) (+ v_node_create_~temp~0.offset_15 4) v_DerPreprocessor_3)) v_sll_circular_prepend_~head.base_BEFORE_CALL_2) v_sll_circular_prepend_~head.offset_BEFORE_CALL_2)))))): de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...