java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/list-simple/dll2c_append_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:03:30,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:03:30,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:03:30,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:03:30,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:03:30,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:03:30,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:03:30,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:03:30,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:03:30,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:03:30,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:03:30,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:03:30,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:03:30,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:03:30,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:03:30,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:03:30,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:03:30,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:03:30,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:03:30,696 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:03:30,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:03:30,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:03:30,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:03:30,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:03:30,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:03:30,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:03:30,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:03:30,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:03:30,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:03:30,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:03:30,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:03:30,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:03:30,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:03:30,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:03:30,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:03:30,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:03:30,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:03:30,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:03:30,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:03:30,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:03:30,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:03:30,728 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 01:03:30,751 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:03:30,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:03:30,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:03:30,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:03:30,754 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:03:30,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:03:30,754 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:03:30,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:03:30,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:03:30,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:03:30,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:03:30,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:03:30,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:03:30,757 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:03:30,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:03:30,757 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:03:30,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:03:30,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:03:30,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:03:30,758 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:03:30,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:03:30,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:03:30,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:03:30,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:03:30,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:03:30,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:03:30,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:03:30,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:03:30,760 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 01:03:31,029 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:03:31,045 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:03:31,049 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:03:31,050 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:03:31,051 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:03:31,052 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_append_unequal.i [2019-10-15 01:03:31,132 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8064b04d0/bda3998efe464a009debc6a6bd9b8771/FLAGef13f3fb6 [2019-10-15 01:03:31,751 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:03:31,752 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2c_append_unequal.i [2019-10-15 01:03:31,765 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8064b04d0/bda3998efe464a009debc6a6bd9b8771/FLAGef13f3fb6 [2019-10-15 01:03:31,975 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8064b04d0/bda3998efe464a009debc6a6bd9b8771 [2019-10-15 01:03:31,985 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:03:31,987 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:03:31,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:03:31,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:03:31,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:03:31,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:03:31" (1/1) ... [2019-10-15 01:03:31,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7492c7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:31, skipping insertion in model container [2019-10-15 01:03:31,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:03:31" (1/1) ... [2019-10-15 01:03:32,004 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:03:32,055 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:03:32,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:03:32,517 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:03:32,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:03:32,641 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:03:32,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:32 WrapperNode [2019-10-15 01:03:32,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:03:32,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:03:32,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:03:32,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:03:32,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:32" (1/1) ... [2019-10-15 01:03:32,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:32" (1/1) ... [2019-10-15 01:03:32,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:32" (1/1) ... [2019-10-15 01:03:32,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:32" (1/1) ... [2019-10-15 01:03:32,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:32" (1/1) ... [2019-10-15 01:03:32,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:32" (1/1) ... [2019-10-15 01:03:32,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:32" (1/1) ... [2019-10-15 01:03:32,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:03:32,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:03:32,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:03:32,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:03:32,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:32" (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 01:03:32,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:03:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:03:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 01:03:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 01:03:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-15 01:03:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-15 01:03:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2019-10-15 01:03:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2019-10-15 01:03:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_append [2019-10-15 01:03:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:03:32,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:03:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 01:03:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 01:03:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 01:03:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 01:03:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 01:03:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 01:03:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 01:03:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 01:03:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 01:03:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 01:03:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 01:03:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 01:03:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 01:03:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 01:03:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 01:03:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 01:03:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 01:03:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 01:03:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 01:03:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 01:03:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 01:03:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 01:03:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 01:03:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 01:03:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 01:03:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 01:03:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 01:03:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 01:03:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 01:03:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 01:03:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 01:03:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 01:03:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 01:03:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 01:03:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 01:03:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 01:03:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 01:03:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 01:03:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 01:03:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 01:03:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 01:03:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 01:03:32,778 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 01:03:32,778 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 01:03:32,778 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 01:03:32,778 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 01:03:32,778 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 01:03:32,778 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 01:03:32,779 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 01:03:32,779 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 01:03:32,779 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 01:03:32,779 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 01:03:32,779 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:03:32,779 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 01:03:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 01:03:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:03:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 01:03:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 01:03:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 01:03:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 01:03:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 01:03:32,781 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 01:03:32,781 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 01:03:32,781 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 01:03:32,781 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 01:03:32,781 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:03:32,781 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 01:03:32,781 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 01:03:32,782 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 01:03:32,782 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 01:03:32,782 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 01:03:32,782 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 01:03:32,782 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 01:03:32,782 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 01:03:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 01:03:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 01:03:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 01:03:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 01:03:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 01:03:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 01:03:32,784 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 01:03:32,784 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 01:03:32,784 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 01:03:32,784 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 01:03:32,784 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 01:03:32,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 01:03:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 01:03:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 01:03:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 01:03:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 01:03:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 01:03:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 01:03:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 01:03:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 01:03:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 01:03:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 01:03:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 01:03:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 01:03:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 01:03:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 01:03:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 01:03:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 01:03:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 01:03:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 01:03:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 01:03:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-15 01:03:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-15 01:03:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:03:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:03:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:03:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2019-10-15 01:03:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2019-10-15 01:03:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:03:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:03:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_append [2019-10-15 01:03:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:03:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:03:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 01:03:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:03:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:03:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:03:33,283 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-15 01:03:33,479 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:03:33,479 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-15 01:03:33,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:03:33 BoogieIcfgContainer [2019-10-15 01:03:33,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:03:33,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:03:33,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:03:33,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:03:33,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:03:31" (1/3) ... [2019-10-15 01:03:33,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a36ab51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:03:33, skipping insertion in model container [2019-10-15 01:03:33,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:32" (2/3) ... [2019-10-15 01:03:33,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a36ab51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:03:33, skipping insertion in model container [2019-10-15 01:03:33,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:03:33" (3/3) ... [2019-10-15 01:03:33,491 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_append_unequal.i [2019-10-15 01:03:33,502 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:03:33,513 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:03:33,525 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:03:33,552 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:03:33,553 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:03:33,553 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:03:33,553 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:03:33,553 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:03:33,553 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:03:33,554 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:03:33,554 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:03:33,573 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2019-10-15 01:03:33,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-15 01:03:33,581 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:03:33,582 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 01:03:33,585 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:03:33,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:03:33,591 INFO L82 PathProgramCache]: Analyzing trace with hash 656525943, now seen corresponding path program 1 times [2019-10-15 01:03:33,601 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:03:33,602 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483076168] [2019-10-15 01:03:33,602 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:33,602 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:33,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:03:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:33,832 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 01:03:33,833 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483076168] [2019-10-15 01:03:33,836 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:03:33,836 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:03:33,837 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510909585] [2019-10-15 01:03:33,848 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:03:33,851 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:03:33,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:03:33,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:03:33,871 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 2 states. [2019-10-15 01:03:33,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:03:33,918 INFO L93 Difference]: Finished difference Result 97 states and 121 transitions. [2019-10-15 01:03:33,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:03:33,920 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 36 [2019-10-15 01:03:33,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:03:33,936 INFO L225 Difference]: With dead ends: 97 [2019-10-15 01:03:33,936 INFO L226 Difference]: Without dead ends: 41 [2019-10-15 01:03:33,946 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 01:03:33,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-15 01:03:34,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-10-15 01:03:34,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-15 01:03:34,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2019-10-15 01:03:34,037 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 36 [2019-10-15 01:03:34,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:03:34,039 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2019-10-15 01:03:34,040 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:03:34,040 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2019-10-15 01:03:34,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-15 01:03:34,045 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:03:34,045 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 01:03:34,045 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:03:34,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:03:34,047 INFO L82 PathProgramCache]: Analyzing trace with hash -2091035926, now seen corresponding path program 1 times [2019-10-15 01:03:34,047 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:03:34,047 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112253184] [2019-10-15 01:03:34,048 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:34,048 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:34,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:03:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:34,237 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 01:03:34,238 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112253184] [2019-10-15 01:03:34,238 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:03:34,238 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:03:34,238 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756655069] [2019-10-15 01:03:34,240 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:03:34,242 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:03:34,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:03:34,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:03:34,243 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 5 states. [2019-10-15 01:03:34,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:03:34,314 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2019-10-15 01:03:34,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:03:34,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2019-10-15 01:03:34,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:03:34,316 INFO L225 Difference]: With dead ends: 72 [2019-10-15 01:03:34,316 INFO L226 Difference]: Without dead ends: 46 [2019-10-15 01:03:34,318 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 01:03:34,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-10-15 01:03:34,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2019-10-15 01:03:34,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-15 01:03:34,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2019-10-15 01:03:34,326 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 36 [2019-10-15 01:03:34,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:03:34,327 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2019-10-15 01:03:34,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:03:34,327 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2019-10-15 01:03:34,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-15 01:03:34,329 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:03:34,329 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:03:34,329 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:03:34,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:03:34,330 INFO L82 PathProgramCache]: Analyzing trace with hash 364861950, now seen corresponding path program 1 times [2019-10-15 01:03:34,330 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:03:34,330 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381346483] [2019-10-15 01:03:34,330 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:34,330 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:34,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:03:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:34,980 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:03:34,981 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381346483] [2019-10-15 01:03:34,981 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224925528] [2019-10-15 01:03:34,981 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 01:03:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:35,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 45 conjunts are in the unsatisfiable core [2019-10-15 01:03:35,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:03:35,397 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 [2019-10-15 01:03:35,398 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:03:35,407 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:03:35,409 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:03:35,409 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-10-15 01:03:38,098 WARN L191 SmtUtils]: Spent 1.58 s on a formula simplification that was a NOOP. DAG size: 23 [2019-10-15 01:03:41,535 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification that was a NOOP. DAG size: 29 [2019-10-15 01:03:41,557 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 01:03:41,565 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:03:41,567 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. [2019-10-15 01:03:41,568 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:40, output treesize:31 [2019-10-15 01:03:45,844 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:03:45,844 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:03:46,100 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 01:03:46,107 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:03:46,108 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. [2019-10-15 01:03:46,109 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:42, output treesize:32 [2019-10-15 01:03:53,971 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 01:03:53,993 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:03:54,196 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:03:54,197 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_node_create_~temp~0.offset_13 Int) (v_DerPreprocessor_3 Int) (v_node_create_~temp~0.base_11 Int)) (exists ((v_dll_circular_append_~new_last~0.base_6 Int) (v_node_create_~temp~0.offset_10 Int) (v_DerPreprocessor_2 Int)) (let ((.cse0 (+ |#StackHeapBarrier| 1))) (or (< v_node_create_~temp~0.base_11 .cse0) (not (= (select (select (store |#memory_$Pointer$.base| v_node_create_~temp~0.base_11 (store (store (store (select |#memory_$Pointer$.base| v_node_create_~temp~0.base_11) v_node_create_~temp~0.offset_13 0) (+ v_node_create_~temp~0.offset_13 4) 0) (+ v_node_create_~temp~0.offset_13 8) v_DerPreprocessor_3)) dll_circular_append_~head.base) dll_circular_append_~head.offset) 0)) (and (= 0 (select (select (store |old(#memory_$Pointer$.base)| v_dll_circular_append_~new_last~0.base_6 (store (store (store (select |old(#memory_$Pointer$.base)| v_dll_circular_append_~new_last~0.base_6) v_node_create_~temp~0.offset_10 0) (+ v_node_create_~temp~0.offset_10 4) 0) (+ v_node_create_~temp~0.offset_10 8) v_DerPreprocessor_2)) |dll_circular_append_#in~head.base|) |dll_circular_append_#in~head.offset|)) (<= .cse0 v_dll_circular_append_~new_last~0.base_6)))))) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) 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_node_create_~temp~0.offset_13 Int) (v_DerPreprocessor_3 Int) (v_node_create_~temp~0.base_11 Int)) (exists ((v_dll_circular_append_~new_last~0.base_6 Int) (v_node_create_~temp~0.offset_10 Int) (v_DerPreprocessor_2 Int)) (let ((.cse0 (+ |#StackHeapBarrier| 1))) (or (< v_node_create_~temp~0.base_11 .cse0) (not (= (select (select (store |#memory_$Pointer$.base| v_node_create_~temp~0.base_11 (store (store (store (select |#memory_$Pointer$.base| v_node_create_~temp~0.base_11) v_node_create_~temp~0.offset_13 0) (+ v_node_create_~temp~0.offset_13 4) 0) (+ v_node_create_~temp~0.offset_13 8) v_DerPreprocessor_3)) dll_circular_append_~head.base) dll_circular_append_~head.offset) 0)) (and (= 0 (select (select (store |old(#memory_$Pointer$.base)| v_dll_circular_append_~new_last~0.base_6 (store (store (store (select |old(#memory_$Pointer$.base)| v_dll_circular_append_~new_last~0.base_6) v_node_create_~temp~0.offset_10 0) (+ v_node_create_~temp~0.offset_10 4) 0) (+ v_node_create_~temp~0.offset_10 8) v_DerPreprocessor_2)) |dll_circular_append_#in~head.base|) |dll_circular_append_#in~head.offset|)) (<= .cse0 v_dll_circular_append_~new_last~0.base_6)))))) 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:383) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:335) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-15 01:03:54,203 INFO L168 Benchmark]: Toolchain (without parser) took 22216.69 ms. Allocated memory was 137.9 MB in the beginning and 251.1 MB in the end (delta: 113.2 MB). Free memory was 100.7 MB in the beginning and 109.7 MB in the end (delta: -9.0 MB). Peak memory consumption was 104.2 MB. Max. memory is 7.1 GB. [2019-10-15 01:03:54,204 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 137.9 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 01:03:54,205 INFO L168 Benchmark]: CACSL2BoogieTranslator took 654.69 ms. Allocated memory was 137.9 MB in the beginning and 203.9 MB in the end (delta: 66.1 MB). Free memory was 100.5 MB in the beginning and 168.8 MB in the end (delta: -68.3 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2019-10-15 01:03:54,206 INFO L168 Benchmark]: Boogie Preprocessor took 71.31 ms. Allocated memory is still 203.9 MB. Free memory was 168.8 MB in the beginning and 165.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2019-10-15 01:03:54,207 INFO L168 Benchmark]: RCFGBuilder took 766.28 ms. Allocated memory is still 203.9 MB. Free memory was 165.4 MB in the beginning and 112.9 MB in the end (delta: 52.5 MB). Peak memory consumption was 52.5 MB. Max. memory is 7.1 GB. [2019-10-15 01:03:54,208 INFO L168 Benchmark]: TraceAbstraction took 20719.90 ms. Allocated memory was 203.9 MB in the beginning and 251.1 MB in the end (delta: 47.2 MB). Free memory was 112.9 MB in the beginning and 109.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 50.4 MB. Max. memory is 7.1 GB. [2019-10-15 01:03:54,212 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 137.9 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 654.69 ms. Allocated memory was 137.9 MB in the beginning and 203.9 MB in the end (delta: 66.1 MB). Free memory was 100.5 MB in the beginning and 168.8 MB in the end (delta: -68.3 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.31 ms. Allocated memory is still 203.9 MB. Free memory was 168.8 MB in the beginning and 165.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 766.28 ms. Allocated memory is still 203.9 MB. Free memory was 165.4 MB in the beginning and 112.9 MB in the end (delta: 52.5 MB). Peak memory consumption was 52.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 20719.90 ms. Allocated memory was 203.9 MB in the beginning and 251.1 MB in the end (delta: 47.2 MB). Free memory was 112.9 MB in the beginning and 109.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 50.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.UnsupportedOperationException: alternation not yet supported: (forall ((v_node_create_~temp~0.offset_13 Int) (v_DerPreprocessor_3 Int) (v_node_create_~temp~0.base_11 Int)) (exists ((v_dll_circular_append_~new_last~0.base_6 Int) (v_node_create_~temp~0.offset_10 Int) (v_DerPreprocessor_2 Int)) (let ((.cse0 (+ |#StackHeapBarrier| 1))) (or (< v_node_create_~temp~0.base_11 .cse0) (not (= (select (select (store |#memory_$Pointer$.base| v_node_create_~temp~0.base_11 (store (store (store (select |#memory_$Pointer$.base| v_node_create_~temp~0.base_11) v_node_create_~temp~0.offset_13 0) (+ v_node_create_~temp~0.offset_13 4) 0) (+ v_node_create_~temp~0.offset_13 8) v_DerPreprocessor_3)) dll_circular_append_~head.base) dll_circular_append_~head.offset) 0)) (and (= 0 (select (select (store |old(#memory_$Pointer$.base)| v_dll_circular_append_~new_last~0.base_6 (store (store (store (select |old(#memory_$Pointer$.base)| v_dll_circular_append_~new_last~0.base_6) v_node_create_~temp~0.offset_10 0) (+ v_node_create_~temp~0.offset_10 4) 0) (+ v_node_create_~temp~0.offset_10 8) v_DerPreprocessor_2)) |dll_circular_append_#in~head.base|) |dll_circular_append_#in~head.offset|)) (<= .cse0 v_dll_circular_append_~new_last~0.base_6)))))) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.UnsupportedOperationException: alternation not yet supported: (forall ((v_node_create_~temp~0.offset_13 Int) (v_DerPreprocessor_3 Int) (v_node_create_~temp~0.base_11 Int)) (exists ((v_dll_circular_append_~new_last~0.base_6 Int) (v_node_create_~temp~0.offset_10 Int) (v_DerPreprocessor_2 Int)) (let ((.cse0 (+ |#StackHeapBarrier| 1))) (or (< v_node_create_~temp~0.base_11 .cse0) (not (= (select (select (store |#memory_$Pointer$.base| v_node_create_~temp~0.base_11 (store (store (store (select |#memory_$Pointer$.base| v_node_create_~temp~0.base_11) v_node_create_~temp~0.offset_13 0) (+ v_node_create_~temp~0.offset_13 4) 0) (+ v_node_create_~temp~0.offset_13 8) v_DerPreprocessor_3)) dll_circular_append_~head.base) dll_circular_append_~head.offset) 0)) (and (= 0 (select (select (store |old(#memory_$Pointer$.base)| v_dll_circular_append_~new_last~0.base_6 (store (store (store (select |old(#memory_$Pointer$.base)| v_dll_circular_append_~new_last~0.base_6) v_node_create_~temp~0.offset_10 0) (+ v_node_create_~temp~0.offset_10 4) 0) (+ v_node_create_~temp~0.offset_10 8) v_DerPreprocessor_2)) |dll_circular_append_#in~head.base|) |dll_circular_append_#in~head.offset|)) (<= .cse0 v_dll_circular_append_~new_last~0.base_6)))))): de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...