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-ext3-properties/sll_of_sll_nondet_append-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 02:58:42,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 02:58:42,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 02:58:42,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 02:58:42,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 02:58:42,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 02:58:42,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 02:58:42,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 02:58:42,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 02:58:42,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 02:58:42,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 02:58:42,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 02:58:42,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 02:58:42,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 02:58:42,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 02:58:42,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 02:58:42,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 02:58:42,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 02:58:42,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 02:58:42,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 02:58:42,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 02:58:42,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 02:58:42,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 02:58:42,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 02:58:42,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 02:58:42,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 02:58:42,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 02:58:42,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 02:58:42,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 02:58:42,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 02:58:42,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 02:58:42,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 02:58:42,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 02:58:42,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 02:58:42,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 02:58:42,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 02:58:42,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 02:58:42,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 02:58:42,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 02:58:42,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 02:58:42,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 02:58:42,744 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 02:58:42,764 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 02:58:42,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 02:58:42,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 02:58:42,767 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 02:58:42,767 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 02:58:42,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 02:58:42,767 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 02:58:42,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 02:58:42,768 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 02:58:42,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 02:58:42,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 02:58:42,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 02:58:42,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 02:58:42,770 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 02:58:42,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 02:58:42,770 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 02:58:42,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 02:58:42,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 02:58:42,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 02:58:42,771 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 02:58:42,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 02:58:42,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:58:42,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 02:58:42,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 02:58:42,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 02:58:42,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 02:58:42,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 02:58:42,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 02:58:42,773 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 [2019-10-15 02:58:43,058 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 02:58:43,072 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 02:58:43,076 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 02:58:43,077 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 02:58:43,078 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 02:58:43,079 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-2.i [2019-10-15 02:58:43,140 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97cc01041/f77c06b4cbba4266a7174c2966d383d5/FLAGeae5e0e0f [2019-10-15 02:58:43,678 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 02:58:43,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-2.i [2019-10-15 02:58:43,702 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97cc01041/f77c06b4cbba4266a7174c2966d383d5/FLAGeae5e0e0f [2019-10-15 02:58:43,984 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97cc01041/f77c06b4cbba4266a7174c2966d383d5 [2019-10-15 02:58:43,994 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 02:58:43,995 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 02:58:43,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 02:58:43,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 02:58:43,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 02:58:44,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:58:43" (1/1) ... [2019-10-15 02:58:44,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1192ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:44, skipping insertion in model container [2019-10-15 02:58:44,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:58:43" (1/1) ... [2019-10-15 02:58:44,011 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 02:58:44,064 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 02:58:44,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:58:44,533 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 02:58:44,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:58:44,651 INFO L192 MainTranslator]: Completed translation [2019-10-15 02:58:44,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:44 WrapperNode [2019-10-15 02:58:44,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 02:58:44,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 02:58:44,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 02:58:44,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 02:58:44,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:44" (1/1) ... [2019-10-15 02:58:44,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:44" (1/1) ... [2019-10-15 02:58:44,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:44" (1/1) ... [2019-10-15 02:58:44,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:44" (1/1) ... [2019-10-15 02:58:44,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:44" (1/1) ... [2019-10-15 02:58:44,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:44" (1/1) ... [2019-10-15 02:58:44,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:44" (1/1) ... [2019-10-15 02:58:44,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 02:58:44,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 02:58:44,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 02:58:44,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 02:58:44,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:44" (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 02:58:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 02:58:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 02:58:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 02:58:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 02:58:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-15 02:58:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-10-15 02:58:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create_with_sublist [2019-10-15 02:58:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2019-10-15 02:58:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2019-10-15 02:58:44,803 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_hierarchical_destroy [2019-10-15 02:58:44,804 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 02:58:44,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 02:58:44,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 02:58:44,804 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 02:58:44,804 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 02:58:44,804 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 02:58:44,805 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 02:58:44,805 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 02:58:44,805 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 02:58:44,805 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 02:58:44,805 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 02:58:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 02:58:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 02:58:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 02:58:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 02:58:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 02:58:44,806 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 02:58:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 02:58:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 02:58:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 02:58:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 02:58:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 02:58:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 02:58:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 02:58:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 02:58:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 02:58:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 02:58:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 02:58:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 02:58:44,808 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 02:58:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 02:58:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 02:58:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 02:58:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 02:58:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 02:58:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 02:58:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 02:58:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 02:58:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 02:58:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 02:58:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 02:58:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 02:58:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 02:58:44,811 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 02:58:44,811 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 02:58:44,811 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 02:58:44,811 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 02:58:44,811 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 02:58:44,811 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 02:58:44,812 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 02:58:44,812 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 02:58:44,812 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 02:58:44,812 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 02:58:44,812 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 02:58:44,812 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 02:58:44,813 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 02:58:44,813 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 02:58:44,813 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 02:58:44,813 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 02:58:44,813 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 02:58:44,813 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 02:58:44,813 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 02:58:44,814 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 02:58:44,814 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 02:58:44,814 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 02:58:44,814 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 02:58:44,814 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 02:58:44,814 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 02:58:44,815 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 02:58:44,815 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 02:58:44,815 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 02:58:44,815 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 02:58:44,815 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 02:58:44,815 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 02:58:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 02:58:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 02:58:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 02:58:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 02:58:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 02:58:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 02:58:44,816 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 02:58:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 02:58:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 02:58:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 02:58:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 02:58:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 02:58:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 02:58:44,817 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 02:58:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 02:58:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 02:58:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 02:58:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 02:58:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 02:58:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 02:58:44,818 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 02:58:44,819 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 02:58:44,819 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 02:58:44,819 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 02:58:44,819 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 02:58:44,819 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 02:58:44,819 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 02:58:44,819 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 02:58:44,820 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 02:58:44,820 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 02:58:44,820 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 02:58:44,820 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 02:58:44,820 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 02:58:44,820 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 02:58:44,820 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-15 02:58:44,821 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-10-15 02:58:44,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 02:58:44,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 02:58:44,821 INFO L130 BoogieDeclarations]: Found specification of procedure node_create_with_sublist [2019-10-15 02:58:44,821 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2019-10-15 02:58:44,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 02:58:44,821 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2019-10-15 02:58:44,822 INFO L130 BoogieDeclarations]: Found specification of procedure sll_hierarchical_destroy [2019-10-15 02:58:44,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 02:58:44,822 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 02:58:44,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 02:58:44,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 02:58:44,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 02:58:44,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 02:58:45,193 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-15 02:58:45,481 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 02:58:45,481 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-15 02:58:45,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:58:45 BoogieIcfgContainer [2019-10-15 02:58:45,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 02:58:45,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 02:58:45,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 02:58:45,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 02:58:45,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:58:43" (1/3) ... [2019-10-15 02:58:45,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef02e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:58:45, skipping insertion in model container [2019-10-15 02:58:45,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:58:44" (2/3) ... [2019-10-15 02:58:45,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef02e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:58:45, skipping insertion in model container [2019-10-15 02:58:45,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:58:45" (3/3) ... [2019-10-15 02:58:45,491 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_of_sll_nondet_append-2.i [2019-10-15 02:58:45,501 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 02:58:45,508 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 02:58:45,517 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 02:58:45,541 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 02:58:45,541 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 02:58:45,541 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 02:58:45,542 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 02:58:45,542 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 02:58:45,542 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 02:58:45,542 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 02:58:45,542 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 02:58:45,563 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2019-10-15 02:58:45,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-15 02:58:45,571 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:58:45,572 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:58:45,574 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:58:45,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:58:45,581 INFO L82 PathProgramCache]: Analyzing trace with hash 583640891, now seen corresponding path program 1 times [2019-10-15 02:58:45,589 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:58:45,590 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432055958] [2019-10-15 02:58:45,590 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:45,590 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:45,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:58:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:58:45,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:58:45,870 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432055958] [2019-10-15 02:58:45,872 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:58:45,872 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:58:45,873 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650530910] [2019-10-15 02:58:45,879 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:58:45,879 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:58:45,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:58:45,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:58:45,896 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2019-10-15 02:58:45,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:58:45,985 INFO L93 Difference]: Finished difference Result 121 states and 164 transitions. [2019-10-15 02:58:45,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:58:45,987 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-15 02:58:45,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:58:45,999 INFO L225 Difference]: With dead ends: 121 [2019-10-15 02:58:46,000 INFO L226 Difference]: Without dead ends: 52 [2019-10-15 02:58:46,006 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:58:46,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-10-15 02:58:46,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2019-10-15 02:58:46,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-10-15 02:58:46,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2019-10-15 02:58:46,057 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 25 [2019-10-15 02:58:46,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:58:46,057 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2019-10-15 02:58:46,058 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:58:46,058 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2019-10-15 02:58:46,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-15 02:58:46,060 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:58:46,060 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:58:46,061 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:58:46,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:58:46,061 INFO L82 PathProgramCache]: Analyzing trace with hash -956753289, now seen corresponding path program 1 times [2019-10-15 02:58:46,061 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:58:46,061 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353619441] [2019-10-15 02:58:46,062 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:46,062 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:46,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:58:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:58:46,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:58:46,237 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353619441] [2019-10-15 02:58:46,237 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48189143] [2019-10-15 02:58:46,237 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 02:58:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:58:46,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 02:58:46,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:58:46,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:58:46,477 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:58:46,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:58:46,569 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1806918059] [2019-10-15 02:58:46,617 INFO L162 IcfgInterpreter]: Started Sifa with 29 locations of interest [2019-10-15 02:58:46,617 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 02:58:46,626 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 02:58:46,636 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 02:58:46,636 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 02:58:46,825 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2019-10-15 02:58:47,505 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:58:47,542 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:58:48,130 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2019-10-15 02:58:48,146 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2019-10-15 02:58:48,167 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2019-10-15 02:58:48,175 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2019-10-15 02:58:48,358 INFO L199 IcfgInterpreter]: Interpreting procedure sll_append with input of size 29 for LOIs [2019-10-15 02:58:48,413 INFO L199 IcfgInterpreter]: Interpreting procedure node_create_with_sublist with input of size 25 for LOIs [2019-10-15 02:58:48,563 INFO L199 IcfgInterpreter]: Interpreting procedure sll_create with input of size 37 for LOIs [2019-10-15 02:58:48,581 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-15 02:58:48,586 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 02:58:49,019 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-10-15 02:58:50,012 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-15 02:58:50,012 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [10, 4, 4] total 28 [2019-10-15 02:58:50,012 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264907731] [2019-10-15 02:58:50,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 02:58:50,015 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:58:50,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 02:58:50,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2019-10-15 02:58:50,017 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand 16 states. [2019-10-15 02:58:50,286 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-10-15 02:58:50,488 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-10-15 02:58:50,694 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2019-10-15 02:58:52,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:58:52,227 INFO L93 Difference]: Finished difference Result 113 states and 148 transitions. [2019-10-15 02:58:52,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-15 02:58:52,228 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 29 [2019-10-15 02:58:52,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:58:52,234 INFO L225 Difference]: With dead ends: 113 [2019-10-15 02:58:52,235 INFO L226 Difference]: Without dead ends: 88 [2019-10-15 02:58:52,239 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=170, Invalid=1390, Unknown=0, NotChecked=0, Total=1560 [2019-10-15 02:58:52,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-10-15 02:58:52,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 61. [2019-10-15 02:58:52,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-10-15 02:58:52,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 78 transitions. [2019-10-15 02:58:52,276 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 78 transitions. Word has length 29 [2019-10-15 02:58:52,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:58:52,277 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 78 transitions. [2019-10-15 02:58:52,277 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 02:58:52,277 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 78 transitions. [2019-10-15 02:58:52,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-15 02:58:52,281 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:58:52,282 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:58:52,488 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:58:52,488 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:58:52,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:58:52,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1293905949, now seen corresponding path program 1 times [2019-10-15 02:58:52,490 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:58:52,490 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157772252] [2019-10-15 02:58:52,491 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:52,491 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:58:52,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:58:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:58:52,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:58:52,745 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157772252] [2019-10-15 02:58:52,746 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308242920] [2019-10-15 02:58:52,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:58:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:58:52,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 02:58:52,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:58:52,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 02:58:52,919 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:58:52,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 02:58:52,975 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1368625619] [2019-10-15 02:58:52,978 INFO L162 IcfgInterpreter]: Started Sifa with 31 locations of interest [2019-10-15 02:58:52,978 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 02:58:52,979 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 02:58:52,979 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 02:58:52,979 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 02:58:53,014 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2019-10-15 02:58:53,342 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:58:53,509 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:58:53,537 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:58:53,697 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:58:53,733 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:58:53,753 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:58:53,904 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-10-15 02:58:53,910 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-10-15 02:58:54,247 INFO L199 IcfgInterpreter]: Interpreting procedure sll_append with input of size 29 for LOIs [2019-10-15 02:58:54,641 INFO L199 IcfgInterpreter]: Interpreting procedure node_create_with_sublist with input of size 25 for LOIs [2019-10-15 02:58:54,748 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:58:54,800 INFO L199 IcfgInterpreter]: Interpreting procedure sll_create with input of size 37 for LOIs [2019-10-15 02:58:54,870 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:58:54,900 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-15 02:58:54,903 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 02:58:55,280 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-10-15 02:58:56,453 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 33 [2019-10-15 02:58:56,674 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2019-10-15 02:58:57,046 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-10-15 02:58:57,529 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2019-10-15 02:58:57,530 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-15 02:58:57,530 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [14, 4, 4] total 40 [2019-10-15 02:58:57,531 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039114458] [2019-10-15 02:58:57,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-10-15 02:58:57,532 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:58:57,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-10-15 02:58:57,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1438, Unknown=0, NotChecked=0, Total=1560 [2019-10-15 02:58:57,533 INFO L87 Difference]: Start difference. First operand 61 states and 78 transitions. Second operand 24 states. [2019-10-15 02:58:57,884 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-10-15 02:58:58,096 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-10-15 02:58:58,319 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2019-10-15 02:58:59,980 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2019-10-15 02:59:00,770 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2019-10-15 02:59:01,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:59:01,574 INFO L93 Difference]: Finished difference Result 120 states and 157 transitions. [2019-10-15 02:59:01,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-15 02:59:01,577 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 32 [2019-10-15 02:59:01,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:59:01,581 INFO L225 Difference]: With dead ends: 120 [2019-10-15 02:59:01,582 INFO L226 Difference]: Without dead ends: 106 [2019-10-15 02:59:01,586 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 68 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=269, Invalid=3391, Unknown=0, NotChecked=0, Total=3660 [2019-10-15 02:59:01,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2019-10-15 02:59:01,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 71. [2019-10-15 02:59:01,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-10-15 02:59:01,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2019-10-15 02:59:01,622 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 32 [2019-10-15 02:59:01,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:59:01,622 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2019-10-15 02:59:01,622 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-10-15 02:59:01,622 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2019-10-15 02:59:01,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-15 02:59:01,629 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:59:01,629 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:59:01,836 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:59:01,837 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:59:01,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:59:01,837 INFO L82 PathProgramCache]: Analyzing trace with hash -925660755, now seen corresponding path program 1 times [2019-10-15 02:59:01,838 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:59:01,838 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968412477] [2019-10-15 02:59:01,838 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:01,839 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:01,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:59:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:59:01,959 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 02:59:01,959 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968412477] [2019-10-15 02:59:01,959 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116362846] [2019-10-15 02:59:01,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:59:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:59:02,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-15 02:59:02,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:59:02,180 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:59:02,180 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:59:02,486 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 02:59:02,487 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 02:59:02,487 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 17 [2019-10-15 02:59:02,487 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397968462] [2019-10-15 02:59:02,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 02:59:02,488 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:59:02,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 02:59:02,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2019-10-15 02:59:02,489 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand 9 states. [2019-10-15 02:59:02,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:59:02,678 INFO L93 Difference]: Finished difference Result 136 states and 173 transitions. [2019-10-15 02:59:02,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 02:59:02,680 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2019-10-15 02:59:02,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:59:02,681 INFO L225 Difference]: With dead ends: 136 [2019-10-15 02:59:02,681 INFO L226 Difference]: Without dead ends: 93 [2019-10-15 02:59:02,685 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 81 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2019-10-15 02:59:02,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2019-10-15 02:59:02,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 80. [2019-10-15 02:59:02,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-10-15 02:59:02,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 99 transitions. [2019-10-15 02:59:02,710 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 99 transitions. Word has length 47 [2019-10-15 02:59:02,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:59:02,710 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 99 transitions. [2019-10-15 02:59:02,710 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 02:59:02,710 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 99 transitions. [2019-10-15 02:59:02,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-15 02:59:02,713 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:59:02,713 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:59:02,914 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:59:02,915 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:59:02,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:59:02,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1426336935, now seen corresponding path program 1 times [2019-10-15 02:59:02,917 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:59:02,917 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231547683] [2019-10-15 02:59:02,918 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:02,918 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:02,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:59:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:59:03,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:59:03,044 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231547683] [2019-10-15 02:59:03,045 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815355394] [2019-10-15 02:59:03,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:59:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:59:03,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-15 02:59:03,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:59:03,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 02:59:03,239 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:59:03,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 02:59:03,293 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1030522018] [2019-10-15 02:59:03,295 INFO L162 IcfgInterpreter]: Started Sifa with 40 locations of interest [2019-10-15 02:59:03,296 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 02:59:03,297 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 02:59:03,297 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 02:59:03,297 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 02:59:03,323 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2019-10-15 02:59:03,712 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:03,828 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:03,854 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:03,949 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:03,969 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:03,985 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:04,142 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-10-15 02:59:04,146 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-10-15 02:59:05,804 INFO L199 IcfgInterpreter]: Interpreting procedure sll_length with input of size 34 for LOIs [2019-10-15 02:59:05,810 INFO L199 IcfgInterpreter]: Interpreting procedure sll_append with input of size 31 for LOIs [2019-10-15 02:59:06,147 INFO L199 IcfgInterpreter]: Interpreting procedure node_create_with_sublist with input of size 25 for LOIs [2019-10-15 02:59:06,292 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:06,333 INFO L199 IcfgInterpreter]: Interpreting procedure sll_create with input of size 37 for LOIs [2019-10-15 02:59:06,389 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:06,424 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-15 02:59:06,426 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 02:59:06,884 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-10-15 02:59:08,039 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 33 [2019-10-15 02:59:08,232 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2019-10-15 02:59:08,648 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-10-15 02:59:09,135 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2019-10-15 02:59:09,508 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2019-10-15 02:59:10,232 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2019-10-15 02:59:10,270 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 02:59:10,271 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4, 29] total 44 [2019-10-15 02:59:10,271 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797744246] [2019-10-15 02:59:10,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-10-15 02:59:10,272 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:59:10,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-10-15 02:59:10,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1741, Unknown=0, NotChecked=0, Total=1892 [2019-10-15 02:59:10,273 INFO L87 Difference]: Start difference. First operand 80 states and 99 transitions. Second operand 44 states. [2019-10-15 02:59:10,568 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2019-10-15 02:59:10,761 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2019-10-15 02:59:10,985 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-10-15 02:59:11,222 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-10-15 02:59:11,683 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-10-15 02:59:12,112 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2019-10-15 02:59:12,488 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2019-10-15 02:59:12,926 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-10-15 02:59:14,003 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2019-10-15 02:59:15,662 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2019-10-15 02:59:15,909 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2019-10-15 02:59:16,328 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2019-10-15 02:59:16,626 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2019-10-15 02:59:16,840 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2019-10-15 02:59:17,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:59:17,847 INFO L93 Difference]: Finished difference Result 283 states and 383 transitions. [2019-10-15 02:59:17,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-10-15 02:59:17,848 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 41 [2019-10-15 02:59:17,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:59:17,851 INFO L225 Difference]: With dead ends: 283 [2019-10-15 02:59:17,851 INFO L226 Difference]: Without dead ends: 213 [2019-10-15 02:59:17,855 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 90 SyntacticMatches, 7 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2649 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=728, Invalid=8392, Unknown=0, NotChecked=0, Total=9120 [2019-10-15 02:59:17,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2019-10-15 02:59:17,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 165. [2019-10-15 02:59:17,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2019-10-15 02:59:17,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 217 transitions. [2019-10-15 02:59:17,891 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 217 transitions. Word has length 41 [2019-10-15 02:59:17,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:59:17,891 INFO L462 AbstractCegarLoop]: Abstraction has 165 states and 217 transitions. [2019-10-15 02:59:17,891 INFO L463 AbstractCegarLoop]: Interpolant automaton has 44 states. [2019-10-15 02:59:17,892 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 217 transitions. [2019-10-15 02:59:17,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-15 02:59:17,894 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:59:17,894 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:59:18,098 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:59:18,099 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:59:18,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:59:18,099 INFO L82 PathProgramCache]: Analyzing trace with hash -753475291, now seen corresponding path program 1 times [2019-10-15 02:59:18,100 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:59:18,100 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527145830] [2019-10-15 02:59:18,100 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:18,100 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:59:18,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:59:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:59:18,236 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 02:59:18,237 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527145830] [2019-10-15 02:59:18,237 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194594058] [2019-10-15 02:59:18,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:59:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:59:18,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-15 02:59:18,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:59:18,574 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 37 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:59:18,575 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:59:19,098 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 02:59:19,098 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1927378743] [2019-10-15 02:59:19,100 INFO L162 IcfgInterpreter]: Started Sifa with 33 locations of interest [2019-10-15 02:59:19,101 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 02:59:19,101 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 02:59:19,101 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 02:59:19,102 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 02:59:19,119 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2019-10-15 02:59:19,219 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:19,346 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:19,368 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:19,467 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:19,489 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:19,514 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:19,692 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-10-15 02:59:19,696 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-10-15 02:59:20,075 INFO L199 IcfgInterpreter]: Interpreting procedure sll_append with input of size 30 for LOIs [2019-10-15 02:59:20,430 INFO L199 IcfgInterpreter]: Interpreting procedure node_create_with_sublist with input of size 25 for LOIs [2019-10-15 02:59:20,511 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:20,555 INFO L199 IcfgInterpreter]: Interpreting procedure sll_create with input of size 37 for LOIs [2019-10-15 02:59:20,631 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 02:59:20,668 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-15 02:59:20,671 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 02:59:20,970 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2019-10-15 02:59:21,386 WARN L191 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56