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/heap-data/hash_fun.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:59:44,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:59:44,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:59:44,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:59:44,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:59:44,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:59:44,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:59:44,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:59:44,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:59:44,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:59:44,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:59:44,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:59:44,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:59:44,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:59:44,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:59:44,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:59:44,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:59:44,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:59:44,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:59:44,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:59:44,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:59:44,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:59:44,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:59:44,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:59:44,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:59:44,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:59:44,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:59:44,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:59:44,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:59:44,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:59:44,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:59:44,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:59:44,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:59:44,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:59:44,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:59:44,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:59:44,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:59:44,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:59:44,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:59:44,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:59:44,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:59:44,787 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 01:59:44,807 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:59:44,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:59:44,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:59:44,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:59:44,810 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:59:44,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:59:44,811 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:59:44,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:59:44,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:59:44,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:59:44,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:59:44,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:59:44,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:59:44,813 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:59:44,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:59:44,814 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:59:44,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:59:44,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:59:44,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:59:44,814 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:59:44,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:59:44,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:59:44,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:59:44,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:59:44,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:59:44,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:59:44,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:59:44,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:59:44,816 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 01:59:45,110 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:59:45,125 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:59:45,129 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:59:45,130 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:59:45,131 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:59:45,132 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/hash_fun.i [2019-10-15 01:59:45,206 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47ef74514/df7cd4ff29d14f4f815d5e4ebdadbc92/FLAGd0104b210 [2019-10-15 01:59:45,784 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:59:45,784 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-data/hash_fun.i [2019-10-15 01:59:45,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47ef74514/df7cd4ff29d14f4f815d5e4ebdadbc92/FLAGd0104b210 [2019-10-15 01:59:46,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47ef74514/df7cd4ff29d14f4f815d5e4ebdadbc92 [2019-10-15 01:59:46,078 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:59:46,080 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:59:46,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:59:46,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:59:46,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:59:46,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:59:46" (1/1) ... [2019-10-15 01:59:46,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44bc7d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:46, skipping insertion in model container [2019-10-15 01:59:46,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:59:46" (1/1) ... [2019-10-15 01:59:46,099 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:59:46,146 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:59:46,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:59:46,603 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:59:46,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:59:46,717 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:59:46,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:46 WrapperNode [2019-10-15 01:59:46,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:59:46,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:59:46,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:59:46,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:59:46,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:46" (1/1) ... [2019-10-15 01:59:46,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:46" (1/1) ... [2019-10-15 01:59:46,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:46" (1/1) ... [2019-10-15 01:59:46,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:46" (1/1) ... [2019-10-15 01:59:46,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:46" (1/1) ... [2019-10-15 01:59:46,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:46" (1/1) ... [2019-10-15 01:59:46,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:46" (1/1) ... [2019-10-15 01:59:46,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:59:46,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:59:46,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:59:46,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:59:46,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:59:46,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:59:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:59:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 01:59:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 01:59:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_fun [2019-10-15 01:59:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_list [2019-10-15 01:59:46,849 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:59:46,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:59:46,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:59:46,849 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 01:59:46,849 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 01:59:46,850 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 01:59:46,850 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 01:59:46,850 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 01:59:46,850 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 01:59:46,850 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 01:59:46,850 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 01:59:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 01:59:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 01:59:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 01:59:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 01:59:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 01:59:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 01:59:46,852 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 01:59:46,852 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 01:59:46,852 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 01:59:46,852 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 01:59:46,852 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 01:59:46,852 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 01:59:46,853 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 01:59:46,853 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 01:59:46,853 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 01:59:46,853 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 01:59:46,853 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 01:59:46,853 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 01:59:46,854 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 01:59:46,854 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 01:59:46,854 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 01:59:46,854 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 01:59:46,854 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 01:59:46,854 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 01:59:46,855 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 01:59:46,855 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 01:59:46,855 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 01:59:46,855 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 01:59:46,855 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 01:59:46,855 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 01:59:46,856 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 01:59:46,856 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 01:59:46,856 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 01:59:46,856 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 01:59:46,856 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 01:59:46,856 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 01:59:46,857 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 01:59:46,857 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 01:59:46,857 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 01:59:46,857 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 01:59:46,857 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 01:59:46,857 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 01:59:46,858 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 01:59:46,858 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 01:59:46,858 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:59:46,858 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 01:59:46,858 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 01:59:46,858 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:59:46,858 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 01:59:46,859 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 01:59:46,859 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 01:59:46,859 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 01:59:46,859 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 01:59:46,859 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 01:59:46,859 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 01:59:46,860 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 01:59:46,860 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 01:59:46,860 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:59:46,860 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 01:59:46,860 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 01:59:46,860 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 01:59:46,861 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 01:59:46,861 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 01:59:46,861 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 01:59:46,861 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 01:59:46,861 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 01:59:46,861 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 01:59:46,861 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 01:59:46,862 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 01:59:46,862 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 01:59:46,862 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 01:59:46,862 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 01:59:46,862 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 01:59:46,862 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 01:59:46,862 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 01:59:46,863 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 01:59:46,863 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 01:59:46,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 01:59:46,863 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 01:59:46,863 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 01:59:46,863 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 01:59:46,863 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 01:59:46,864 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 01:59:46,864 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 01:59:46,864 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 01:59:46,864 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 01:59:46,864 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 01:59:46,864 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 01:59:46,865 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 01:59:46,865 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 01:59:46,865 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 01:59:46,865 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 01:59:46,865 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 01:59:46,865 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 01:59:46,865 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 01:59:46,866 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 01:59:46,866 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 01:59:46,866 INFO L130 BoogieDeclarations]: Found specification of procedure hash_fun [2019-10-15 01:59:46,866 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_list [2019-10-15 01:59:46,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:59:46,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:59:46,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:59:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:59:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:59:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:59:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 01:59:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:59:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:59:46,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:59:46,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:59:47,493 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:59:47,493 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-15 01:59:47,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:59:47 BoogieIcfgContainer [2019-10-15 01:59:47,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:59:47,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:59:47,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:59:47,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:59:47,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:59:46" (1/3) ... [2019-10-15 01:59:47,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba9ccc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:59:47, skipping insertion in model container [2019-10-15 01:59:47,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:46" (2/3) ... [2019-10-15 01:59:47,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba9ccc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:59:47, skipping insertion in model container [2019-10-15 01:59:47,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:59:47" (3/3) ... [2019-10-15 01:59:47,503 INFO L109 eAbstractionObserver]: Analyzing ICFG hash_fun.i [2019-10-15 01:59:47,512 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:59:47,520 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:59:47,532 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:59:47,555 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:59:47,555 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:59:47,556 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:59:47,556 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:59:47,556 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:59:47,557 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:59:47,557 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:59:47,557 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:59:47,574 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-10-15 01:59:47,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 01:59:47,580 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:59:47,581 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:59:47,583 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:59:47,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:59:47,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1208309427, now seen corresponding path program 1 times [2019-10-15 01:59:47,595 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:59:47,595 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795421423] [2019-10-15 01:59:47,596 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:47,596 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:47,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:59:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:47,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:59:47,733 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795421423] [2019-10-15 01:59:47,734 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:59:47,734 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:59:47,734 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993990269] [2019-10-15 01:59:47,739 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:59:47,739 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:59:47,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:59:47,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:59:47,752 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-10-15 01:59:47,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:59:47,769 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2019-10-15 01:59:47,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:59:47,770 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-15 01:59:47,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:59:47,783 INFO L225 Difference]: With dead ends: 36 [2019-10-15 01:59:47,783 INFO L226 Difference]: Without dead ends: 22 [2019-10-15 01:59:47,786 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 01:59:47,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-15 01:59:47,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-15 01:59:47,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-15 01:59:47,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-10-15 01:59:47,826 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 10 [2019-10-15 01:59:47,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:59:47,827 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-10-15 01:59:47,827 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:59:47,827 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-10-15 01:59:47,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-15 01:59:47,828 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:59:47,828 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:59:47,828 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:59:47,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:59:47,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1850516525, now seen corresponding path program 1 times [2019-10-15 01:59:47,829 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:59:47,829 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239115838] [2019-10-15 01:59:47,830 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:47,830 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:47,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:59:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:47,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:59:47,988 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239115838] [2019-10-15 01:59:47,988 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:59:47,988 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:59:47,989 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977252937] [2019-10-15 01:59:47,990 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:59:47,990 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:59:47,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:59:47,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:59:47,991 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 4 states. [2019-10-15 01:59:48,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:59:48,043 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2019-10-15 01:59:48,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:59:48,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-15 01:59:48,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:59:48,045 INFO L225 Difference]: With dead ends: 37 [2019-10-15 01:59:48,045 INFO L226 Difference]: Without dead ends: 29 [2019-10-15 01:59:48,046 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:59:48,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-15 01:59:48,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2019-10-15 01:59:48,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-15 01:59:48,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-10-15 01:59:48,058 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 11 [2019-10-15 01:59:48,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:59:48,058 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-10-15 01:59:48,058 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:59:48,058 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2019-10-15 01:59:48,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-15 01:59:48,068 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:59:48,069 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:59:48,069 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:59:48,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:59:48,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1555299807, now seen corresponding path program 1 times [2019-10-15 01:59:48,070 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:59:48,070 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722023690] [2019-10-15 01:59:48,070 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:48,070 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:48,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:59:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:48,292 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 01:59:48,293 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722023690] [2019-10-15 01:59:48,293 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147910084] [2019-10-15 01:59:48,293 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 01:59:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:48,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 30 conjunts are in the unsatisfiable core [2019-10-15 01:59:48,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:59:48,615 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-10-15 01:59:48,617 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:48,640 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:48,677 INFO L341 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2019-10-15 01:59:48,678 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 15 [2019-10-15 01:59:48,678 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2019-10-15 01:59:48,697 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:48,705 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-10-15 01:59:48,705 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:48,722 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:48,725 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:59:48,726 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:59, output treesize:41 [2019-10-15 01:59:48,761 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:48,833 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:48,852 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 01:59:48,853 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:59:48,864 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:48,868 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:48,873 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:48,876 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:49,056 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:49,068 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_int_28|], 2=[|v_#memory_int_29|]} [2019-10-15 01:59:49,135 INFO L341 Elim1Store]: treesize reduction 20, result has 47.4 percent of original size [2019-10-15 01:59:49,136 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 33 [2019-10-15 01:59:49,140 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:49,187 INFO L341 Elim1Store]: treesize reduction 20, result has 47.4 percent of original size [2019-10-15 01:59:49,188 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 33 [2019-10-15 01:59:49,189 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:49,215 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:49,245 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 33 treesize of output 25 [2019-10-15 01:59:49,246 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:49,250 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:49,258 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 33 treesize of output 25 [2019-10-15 01:59:49,259 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:49,260 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:49,298 INFO L567 ElimStorePlain]: treesize reduction 10, result has 76.7 percent of original size [2019-10-15 01:59:49,299 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:49,300 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2019-10-15 01:59:49,300 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:95, output treesize:16 [2019-10-15 01:59:49,323 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:49,344 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_int_22|], 2=[|v_#memory_int_30|]} [2019-10-15 01:59:49,356 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:59:49,358 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 1 [2019-10-15 01:59:49,358 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:49,359 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:49,360 INFO L464 ElimStorePlain]: Eliminatee |v_#memory_int_30| vanished before elimination [2019-10-15 01:59:49,360 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:59:49,360 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:50, output treesize:1 [2019-10-15 01:59:49,361 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:59:49,389 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 01:59:49,389 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1721509455] [2019-10-15 01:59:49,414 INFO L162 IcfgInterpreter]: Started Sifa with 21 locations of interest [2019-10-15 01:59:49,414 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:59:49,420 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:59:49,428 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:59:49,429 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:59:49,548 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-15 02:00:02,448 INFO L199 IcfgInterpreter]: Interpreting procedure append_to_list with input of size 47 for LOIs [2019-10-15 02:00:02,492 INFO L199 IcfgInterpreter]: Interpreting procedure hash_fun with input of size 36 for LOIs [2019-10-15 02:00:02,495 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-15 02:00:02,499 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 02:00:02,962 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2019-10-15 02:00:03,278 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2019-10-15 02:00:03,591 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2019-10-15 02:00:04,050 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2019-10-15 02:00:04,241 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 39 [2019-10-15 02:00:04,463 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 38 [2019-10-15 02:00:05,061 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2019-10-15 02:00:05,063 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 02:00:05,064 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 16] total 30 [2019-10-15 02:00:05,064 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122890846] [2019-10-15 02:00:05,066 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-10-15 02:00:05,066 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:00:05,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-10-15 02:00:05,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=745, Unknown=0, NotChecked=0, Total=870 [2019-10-15 02:00:05,068 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 30 states. [2019-10-15 02:00:05,378 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2019-10-15 02:00:05,635 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2019-10-15 02:00:05,888 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-10-15 02:00:06,322 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2019-10-15 02:00:07,085 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2019-10-15 02:00:07,421 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2019-10-15 02:00:07,789 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2019-10-15 02:00:08,056 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2019-10-15 02:00:08,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:00:08,425 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2019-10-15 02:00:08,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-15 02:00:08,426 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 22 [2019-10-15 02:00:08,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:00:08,429 INFO L225 Difference]: With dead ends: 76 [2019-10-15 02:00:08,429 INFO L226 Difference]: Without dead ends: 53 [2019-10-15 02:00:08,431 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=396, Invalid=1860, Unknown=0, NotChecked=0, Total=2256 [2019-10-15 02:00:08,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-10-15 02:00:08,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 34. [2019-10-15 02:00:08,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-15 02:00:08,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2019-10-15 02:00:08,439 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 22 [2019-10-15 02:00:08,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:00:08,440 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2019-10-15 02:00:08,440 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-10-15 02:00:08,440 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2019-10-15 02:00:08,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-15 02:00:08,441 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:00:08,441 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:00:08,642 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:00:08,643 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:00:08,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:00:08,643 INFO L82 PathProgramCache]: Analyzing trace with hash -874488367, now seen corresponding path program 1 times [2019-10-15 02:00:08,644 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:00:08,644 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692289505] [2019-10-15 02:00:08,644 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:00:08,644 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:00:08,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:00:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:00:08,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:00:08,844 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692289505] [2019-10-15 02:00:08,844 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78583250] [2019-10-15 02:00:08,845 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 02:00:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:00:09,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 38 conjunts are in the unsatisfiable core [2019-10-15 02:00:09,019 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:00:15,458 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:00:15,458 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:00:15,716 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2019-10-15 02:00:18,288 WARN L191 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 60 [2019-10-15 02:00:18,764 WARN L191 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2019-10-15 02:00:19,246 WARN L191 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2019-10-15 02:00:19,250 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2019-10-15 02:00:20,997 WARN L191 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 183 DAG size of output: 83 [2019-10-15 02:00:21,026 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:00:21,027 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1151514302] [2019-10-15 02:00:21,029 INFO L162 IcfgInterpreter]: Started Sifa with 22 locations of interest [2019-10-15 02:00:21,029 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 02:00:21,029 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 02:00:21,030 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 02:00:21,030 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 02:00:21,052 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs