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 -i ../../../trunk/examples/svcomp/heap-data/hash_fun.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 22:07:46,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:07:46,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:07:46,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 22:07:46,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 22:07:46,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 22:07:46,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 22:07:46,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 22:07:46,757 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 22:07:46,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 22:07:46,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 22:07:46,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 22:07:46,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:07:46,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:07:46,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:07:46,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:07:46,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:07:46,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:07:46,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:07:46,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:07:46,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:07:46,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:07:46,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:07:46,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:07:46,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 22:07:46,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 22:07:46,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 22:07:46,787 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 22:07:46,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 22:07:46,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 22:07:46,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 22:07:46,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 22:07:46,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 22:07:46,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 22:07:46,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 22:07:46,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 22:07:46,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 22:07:46,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 22:07:46,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:07:46,794 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:07:46,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:07:46,795 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 [2019-10-14 22:07:46,809 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:07:46,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:07:46,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:07:46,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:07:46,810 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:07:46,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:07:46,811 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:07:46,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:07:46,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:07:46,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:07:46,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:07:46,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:07:46,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:07:46,812 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:07:46,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:07:46,813 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:07:46,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:07:46,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:07:46,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:07:46,814 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:07:46,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:07:46,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:07:46,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:07:46,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:07:46,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:07:46,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:07:46,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:07:46,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:07:46,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:07:47,108 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:07:47,121 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:07:47,124 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:07:47,126 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:07:47,126 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:07:47,127 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/hash_fun.i [2019-10-14 22:07:47,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8343fc541/0bf4b00e48ca4b26abd02a515e8f5ffd/FLAGcf949245f [2019-10-14 22:07:47,667 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:07:47,668 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-data/hash_fun.i [2019-10-14 22:07:47,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8343fc541/0bf4b00e48ca4b26abd02a515e8f5ffd/FLAGcf949245f [2019-10-14 22:07:48,018 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8343fc541/0bf4b00e48ca4b26abd02a515e8f5ffd [2019-10-14 22:07:48,028 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:07:48,029 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:07:48,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:07:48,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:07:48,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:07:48,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:07:48" (1/1) ... [2019-10-14 22:07:48,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2322f431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:07:48, skipping insertion in model container [2019-10-14 22:07:48,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:07:48" (1/1) ... [2019-10-14 22:07:48,048 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:07:48,100 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:07:48,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:07:48,621 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:07:48,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:07:48,748 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:07:48,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:07:48 WrapperNode [2019-10-14 22:07:48,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:07:48,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:07:48,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:07:48,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:07:48,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:07:48" (1/1) ... [2019-10-14 22:07:48,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:07:48" (1/1) ... [2019-10-14 22:07:48,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:07:48" (1/1) ... [2019-10-14 22:07:48,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:07:48" (1/1) ... [2019-10-14 22:07:48,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:07:48" (1/1) ... [2019-10-14 22:07:48,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:07:48" (1/1) ... [2019-10-14 22:07:48,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:07:48" (1/1) ... [2019-10-14 22:07:48,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:07:48,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:07:48,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:07:48,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:07:48,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:07:48" (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 [2019-10-14 22:07:48,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:07:48,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:07:48,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-14 22:07:48,882 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-14 22:07:48,882 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_fun [2019-10-14 22:07:48,882 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_list [2019-10-14 22:07:48,882 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:07:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:07:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:07:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-14 22:07:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-14 22:07:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-14 22:07:48,884 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-14 22:07:48,884 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-14 22:07:48,884 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-14 22:07:48,885 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-14 22:07:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-14 22:07:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-14 22:07:48,888 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-14 22:07:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-14 22:07:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-14 22:07:48,889 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-14 22:07:48,890 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-14 22:07:48,890 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-14 22:07:48,890 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-14 22:07:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-14 22:07:48,892 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-14 22:07:48,892 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-14 22:07:48,892 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-14 22:07:48,892 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-14 22:07:48,892 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-14 22:07:48,892 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-14 22:07:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-14 22:07:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-14 22:07:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-14 22:07:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-14 22:07:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-14 22:07:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-14 22:07:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-14 22:07:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-14 22:07:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-14 22:07:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-14 22:07:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-14 22:07:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-14 22:07:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-14 22:07:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-14 22:07:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-14 22:07:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-14 22:07:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-14 22:07:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-14 22:07:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-14 22:07:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-14 22:07:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-14 22:07:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-14 22:07:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-14 22:07:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-14 22:07:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-14 22:07:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-14 22:07:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-14 22:07:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-14 22:07:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-14 22:07:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 22:07:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-14 22:07:48,896 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-14 22:07:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 22:07:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-14 22:07:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-14 22:07:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-14 22:07:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-14 22:07:48,897 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-14 22:07:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-14 22:07:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-14 22:07:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-14 22:07:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-14 22:07:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 22:07:48,898 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-14 22:07:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-14 22:07:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-14 22:07:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-14 22:07:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-14 22:07:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-14 22:07:48,899 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-14 22:07:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-14 22:07:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-14 22:07:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-14 22:07:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-14 22:07:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-14 22:07:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-14 22:07:48,900 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-14 22:07:48,901 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-14 22:07:48,901 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-14 22:07:48,901 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-14 22:07:48,901 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-14 22:07:48,901 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-14 22:07:48,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-14 22:07:48,901 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-14 22:07:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-14 22:07:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-14 22:07:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-14 22:07:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-14 22:07:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-14 22:07:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-14 22:07:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-14 22:07:48,902 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-14 22:07:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-14 22:07:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-14 22:07:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-14 22:07:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-14 22:07:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-14 22:07:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-14 22:07:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-14 22:07:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-14 22:07:48,903 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-14 22:07:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-14 22:07:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure hash_fun [2019-10-14 22:07:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_list [2019-10-14 22:07:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 22:07:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 22:07:48,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 22:07:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 22:07:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:07:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 22:07:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-14 22:07:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 22:07:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 22:07:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:07:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:07:49,418 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:07:49,418 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-14 22:07:49,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:07:49 BoogieIcfgContainer [2019-10-14 22:07:49,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:07:49,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:07:49,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:07:49,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:07:49,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:07:48" (1/3) ... [2019-10-14 22:07:49,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16adbbca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:07:49, skipping insertion in model container [2019-10-14 22:07:49,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:07:48" (2/3) ... [2019-10-14 22:07:49,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16adbbca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:07:49, skipping insertion in model container [2019-10-14 22:07:49,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:07:49" (3/3) ... [2019-10-14 22:07:49,428 INFO L109 eAbstractionObserver]: Analyzing ICFG hash_fun.i [2019-10-14 22:07:49,439 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:07:49,447 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 22:07:49,457 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 22:07:49,482 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:07:49,482 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:07:49,482 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:07:49,482 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:07:49,483 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:07:49,483 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:07:49,483 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:07:49,483 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:07:49,497 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-10-14 22:07:49,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-14 22:07:49,503 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:07:49,504 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:07:49,505 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:07:49,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:07:49,510 INFO L82 PathProgramCache]: Analyzing trace with hash 58523941, now seen corresponding path program 1 times [2019-10-14 22:07:49,519 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:07:49,519 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404405554] [2019-10-14 22:07:49,520 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:07:49,520 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:07:49,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:07:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:49,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:07:49,702 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404405554] [2019-10-14 22:07:49,704 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:07:49,704 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 22:07:49,704 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984533462] [2019-10-14 22:07:49,710 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 22:07:49,710 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:07:49,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 22:07:49,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 22:07:49,730 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2019-10-14 22:07:49,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:07:49,872 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2019-10-14 22:07:49,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 22:07:49,874 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-10-14 22:07:49,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:07:49,891 INFO L225 Difference]: With dead ends: 43 [2019-10-14 22:07:49,891 INFO L226 Difference]: Without dead ends: 26 [2019-10-14 22:07:49,897 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 22:07:49,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-14 22:07:49,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-10-14 22:07:49,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-14 22:07:49,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-10-14 22:07:49,938 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 12 [2019-10-14 22:07:49,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:07:49,939 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-10-14 22:07:49,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 22:07:49,939 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-10-14 22:07:49,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-14 22:07:49,940 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:07:49,941 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:07:49,942 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:07:49,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:07:49,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1222839633, now seen corresponding path program 1 times [2019-10-14 22:07:49,943 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:07:49,944 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812912468] [2019-10-14 22:07:49,944 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:07:49,944 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:07:49,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:07:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:50,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:07:50,115 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812912468] [2019-10-14 22:07:50,116 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:07:50,116 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 22:07:50,117 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728151298] [2019-10-14 22:07:50,119 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:07:50,119 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:07:50,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:07:50,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 22:07:50,120 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2019-10-14 22:07:50,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:07:50,277 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2019-10-14 22:07:50,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 22:07:50,277 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-10-14 22:07:50,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:07:50,279 INFO L225 Difference]: With dead ends: 42 [2019-10-14 22:07:50,279 INFO L226 Difference]: Without dead ends: 33 [2019-10-14 22:07:50,280 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 22:07:50,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-14 22:07:50,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2019-10-14 22:07:50,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-14 22:07:50,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2019-10-14 22:07:50,293 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 13 [2019-10-14 22:07:50,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:07:50,293 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2019-10-14 22:07:50,293 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:07:50,293 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2019-10-14 22:07:50,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-14 22:07:50,296 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:07:50,296 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, 1, 1, 1, 1] [2019-10-14 22:07:50,296 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:07:50,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:07:50,297 INFO L82 PathProgramCache]: Analyzing trace with hash 479588754, now seen corresponding path program 1 times [2019-10-14 22:07:50,297 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:07:50,297 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803581136] [2019-10-14 22:07:50,297 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:07:50,297 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:07:50,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:07:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:50,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:07:50,648 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803581136] [2019-10-14 22:07:50,648 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028573088] [2019-10-14 22:07:50,648 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 [2019-10-14 22:07:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:50,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 26 conjunts are in the unsatisfiable core [2019-10-14 22:07:50,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:07:50,926 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 [2019-10-14 22:07:50,926 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 22:07:50,952 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:07:50,961 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 [2019-10-14 22:07:50,961 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 22:07:50,980 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:07:51,011 INFO L341 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2019-10-14 22:07:51,012 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 [2019-10-14 22:07:51,013 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2019-10-14 22:07:51,033 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:07:51,035 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 22:07:51,042 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 22:07:51,042 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:62, output treesize:41 [2019-10-14 22:07:51,091 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 22:07:51,155 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 22:07:51,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:07:51,166 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:07:51,167 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2019-10-14 22:07:51,172 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990007266] [2019-10-14 22:07:51,174 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-14 22:07:51,174 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:07:51,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-14 22:07:51,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2019-10-14 22:07:51,176 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 13 states. [2019-10-14 22:07:51,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:07:51,647 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2019-10-14 22:07:51,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 22:07:51,647 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2019-10-14 22:07:51,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:07:51,649 INFO L225 Difference]: With dead ends: 66 [2019-10-14 22:07:51,649 INFO L226 Difference]: Without dead ends: 59 [2019-10-14 22:07:51,650 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2019-10-14 22:07:51,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-10-14 22:07:51,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2019-10-14 22:07:51,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-14 22:07:51,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2019-10-14 22:07:51,660 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 26 [2019-10-14 22:07:51,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:07:51,661 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2019-10-14 22:07:51,661 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-14 22:07:51,661 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2019-10-14 22:07:51,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-14 22:07:51,662 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:07:51,662 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, 1, 1, 1, 1] [2019-10-14 22:07:51,865 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:07:51,866 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:07:51,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:07:51,867 INFO L82 PathProgramCache]: Analyzing trace with hash 479586832, now seen corresponding path program 1 times [2019-10-14 22:07:51,867 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:07:51,867 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621270376] [2019-10-14 22:07:51,868 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:07:51,868 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:07:51,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:07:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:52,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:07:52,077 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621270376] [2019-10-14 22:07:52,077 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736009968] [2019-10-14 22:07:52,077 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 [2019-10-14 22:07:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:52,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 30 conjunts are in the unsatisfiable core [2019-10-14 22:07:52,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:07:52,267 INFO L341 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2019-10-14 22:07:52,267 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 [2019-10-14 22:07:52,268 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-10-14 22:07:52,287 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:07:52,292 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 [2019-10-14 22:07:52,293 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 22:07:52,310 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:07:52,315 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 [2019-10-14 22:07:52,315 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-14 22:07:52,330 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:07:52,332 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 22:07:52,333 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 22:07:52,333 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:62, output treesize:41 [2019-10-14 22:07:52,361 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 22:07:52,405 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 22:07:52,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:07:52,413 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:07:52,414 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2019-10-14 22:07:52,414 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170464828] [2019-10-14 22:07:52,414 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-14 22:07:52,415 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:07:52,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-14 22:07:52,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2019-10-14 22:07:52,415 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand 13 states. [2019-10-14 22:07:52,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:07:52,878 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2019-10-14 22:07:52,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 22:07:52,880 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2019-10-14 22:07:52,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:07:52,881 INFO L225 Difference]: With dead ends: 57 [2019-10-14 22:07:52,881 INFO L226 Difference]: Without dead ends: 55 [2019-10-14 22:07:52,882 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2019-10-14 22:07:52,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-10-14 22:07:52,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 36. [2019-10-14 22:07:52,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-14 22:07:52,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2019-10-14 22:07:52,889 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2019-10-14 22:07:52,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:07:52,890 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2019-10-14 22:07:52,890 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-14 22:07:52,890 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2019-10-14 22:07:52,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-14 22:07:52,891 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:07:52,891 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, 1, 1, 1, 1, 1] [2019-10-14 22:07:53,094 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:07:53,095 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:07:53,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:07:53,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1071199269, now seen corresponding path program 1 times [2019-10-14 22:07:53,097 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:07:53,097 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359662177] [2019-10-14 22:07:53,098 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:07:53,098 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:07:53,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:07:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:53,372 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:07:53,373 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359662177] [2019-10-14 22:07:53,373 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632997637] [2019-10-14 22:07:53,373 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 [2019-10-14 22:07:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:07:53,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 38 conjunts are in the unsatisfiable core [2019-10-14 22:07:53,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:07:53,584 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-10-14 22:07:53,585 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 22:07:53,607 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:07:53,610 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-10-14 22:07:53,610 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 22:07:53,621 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:07:53,622 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 22:07:53,623 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:7 [2019-10-14 22:07:53,668 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 22:07:53,686 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:07:53,690 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 22:07:53,705 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:07:53,706 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-10-14 22:07:53,706 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:72, output treesize:88 [2019-10-14 22:08:01,809 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 22:08:01,812 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2019-10-14 22:08:01,812 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 22:08:01,859 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:08:01,867 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 22:08:01,870 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2019-10-14 22:08:01,871 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 22:08:01,888 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:08:01,889 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 22:08:01,890 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:105, output treesize:42 [2019-10-14 22:08:01,967 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 22:08:01,969 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-14 22:08:01,971 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:08:01,972 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 70 [2019-10-14 22:08:01,976 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 22:08:02,008 INFO L567 ElimStorePlain]: treesize reduction 7, result has 90.1 percent of original size [2019-10-14 22:08:02,014 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 22:08:02,018 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:08:02,019 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 50 [2019-10-14 22:08:02,020 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 22:08:02,049 INFO L567 ElimStorePlain]: treesize reduction 7, result has 85.4 percent of original size [2019-10-14 22:08:02,050 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 22:08:02,050 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:92, output treesize:41 [2019-10-14 22:08:02,094 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 22:08:02,095 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-10-14 22:08:02,095 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 22:08:02,106 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:08:02,109 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 22:08:02,110 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2019-10-14 22:08:02,111 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 22:08:02,115 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 22:08:02,116 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 22:08:02,116 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:7 [2019-10-14 22:08:02,122 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:08:02,123 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:08:02,123 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2019-10-14 22:08:02,123 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588329359] [2019-10-14 22:08:02,123 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-14 22:08:02,124 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:08:02,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-14 22:08:02,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=171, Unknown=4, NotChecked=0, Total=210 [2019-10-14 22:08:02,124 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 15 states. [2019-10-14 22:08:38,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:08:38,699 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2019-10-14 22:08:38,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 22:08:38,700 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 31 [2019-10-14 22:08:38,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:08:38,701 INFO L225 Difference]: With dead ends: 62 [2019-10-14 22:08:38,701 INFO L226 Difference]: Without dead ends: 48 [2019-10-14 22:08:38,702 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=59, Invalid=279, Unknown=4, NotChecked=0, Total=342 [2019-10-14 22:08:38,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-14 22:08:38,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2019-10-14 22:08:38,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-10-14 22:08:38,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2019-10-14 22:08:38,711 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 31 [2019-10-14 22:08:38,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:08:38,711 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2019-10-14 22:08:38,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-14 22:08:38,711 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2019-10-14 22:08:38,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-14 22:08:38,713 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:08:38,713 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-14 22:08:38,916 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:08:38,917 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:08:38,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:08:38,917 INFO L82 PathProgramCache]: Analyzing trace with hash 582023166, now seen corresponding path program 2 times [2019-10-14 22:08:38,918 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:08:38,918 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515602159] [2019-10-14 22:08:38,918 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:08:38,919 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:08:38,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:08:38,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:08:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:08:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat