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/list-simple/sll2c_remove_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:12:49,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:12:49,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:12:49,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:12:49,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:12:49,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:12:49,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:12:49,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:12:49,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:12:49,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:12:49,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:12:49,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:12:49,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:12:49,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:12:49,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:12:49,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:12:49,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:12:49,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:12:49,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:12:49,754 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:12:49,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:12:49,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:12:49,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:12:49,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:12:49,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:12:49,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:12:49,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:12:49,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:12:49,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:12:49,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:12:49,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:12:49,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:12:49,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:12:49,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:12:49,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:12:49,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:12:49,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:12:49,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:12:49,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:12:49,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:12:49,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:12:49,779 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 23:12:49,812 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:12:49,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:12:49,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:12:49,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:12:49,820 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:12:49,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:12:49,820 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:12:49,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:12:49,820 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:12:49,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:12:49,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:12:49,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:12:49,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:12:49,821 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:12:49,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:12:49,822 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:12:49,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:12:49,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:12:49,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:12:49,823 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:12:49,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:12:49,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:12:49,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:12:49,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:12:49,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:12:49,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:12:49,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:12:49,824 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:12:49,825 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:12:50,110 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:12:50,122 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:12:50,125 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:12:50,127 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:12:50,127 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:12:50,128 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_remove_all_reverse.i [2019-10-14 23:12:50,194 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f0956260/9d68144f95d24ca6adac5bab7cacc2db/FLAG49b09df52 [2019-10-14 23:12:50,753 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:12:50,754 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_remove_all_reverse.i [2019-10-14 23:12:50,766 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f0956260/9d68144f95d24ca6adac5bab7cacc2db/FLAG49b09df52 [2019-10-14 23:12:51,017 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f0956260/9d68144f95d24ca6adac5bab7cacc2db [2019-10-14 23:12:51,027 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:12:51,029 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:12:51,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:12:51,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:12:51,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:12:51,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:12:51" (1/1) ... [2019-10-14 23:12:51,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d7f296b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:51, skipping insertion in model container [2019-10-14 23:12:51,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:12:51" (1/1) ... [2019-10-14 23:12:51,044 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:12:51,090 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:12:51,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:12:51,552 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:12:51,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:12:51,699 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:12:51,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:51 WrapperNode [2019-10-14 23:12:51,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:12:51,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:12:51,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:12:51,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:12:51,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:51" (1/1) ... [2019-10-14 23:12:51,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:51" (1/1) ... [2019-10-14 23:12:51,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:51" (1/1) ... [2019-10-14 23:12:51,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:51" (1/1) ... [2019-10-14 23:12:51,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:51" (1/1) ... [2019-10-14 23:12:51,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:51" (1/1) ... [2019-10-14 23:12:51,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:51" (1/1) ... [2019-10-14 23:12:51,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:12:51,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:12:51,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:12:51,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:12:51,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:51" (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 23:12:51,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:12:51,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:12:51,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-14 23:12:51,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-14 23:12:51,828 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-14 23:12:51,828 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-14 23:12:51,829 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-10-14 23:12:51,829 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_remove_last [2019-10-14 23:12:51,829 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:12:51,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:12:51,829 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-14 23:12:51,829 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-14 23:12:51,830 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-14 23:12:51,830 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-14 23:12:51,830 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-14 23:12:51,830 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-14 23:12:51,830 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-14 23:12:51,831 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-14 23:12:51,831 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-14 23:12:51,831 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-14 23:12:51,831 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-14 23:12:51,831 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-14 23:12:51,831 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-14 23:12:51,832 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-14 23:12:51,832 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-14 23:12:51,832 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-14 23:12:51,832 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-14 23:12:51,832 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-14 23:12:51,832 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-14 23:12:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-14 23:12:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-14 23:12:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-14 23:12:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-14 23:12:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-14 23:12:51,833 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-14 23:12:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-14 23:12:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-14 23:12:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-14 23:12:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-14 23:12:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-14 23:12:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-14 23:12:51,834 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-14 23:12:51,835 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-14 23:12:51,835 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-14 23:12:51,835 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-14 23:12:51,835 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-14 23:12:51,835 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-14 23:12:51,835 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-14 23:12:51,836 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-14 23:12:51,836 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-14 23:12:51,836 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-14 23:12:51,836 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-14 23:12:51,836 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-14 23:12:51,836 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-14 23:12:51,837 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-14 23:12:51,837 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-14 23:12:51,837 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-14 23:12:51,837 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-14 23:12:51,837 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-14 23:12:51,837 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-14 23:12:51,838 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-14 23:12:51,838 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-14 23:12:51,838 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:12:51,838 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-14 23:12:51,838 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-14 23:12:51,838 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:12:51,838 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-14 23:12:51,839 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-14 23:12:51,839 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-14 23:12:51,839 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-14 23:12:51,839 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-14 23:12:51,839 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-14 23:12:51,839 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-14 23:12:51,839 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-14 23:12:51,840 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-14 23:12:51,840 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:12:51,840 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-14 23:12:51,840 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-14 23:12:51,840 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-14 23:12:51,840 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-14 23:12:51,840 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-14 23:12:51,841 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-14 23:12:51,841 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-14 23:12:51,841 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-14 23:12:51,841 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-14 23:12:51,841 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-14 23:12:51,841 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-14 23:12:51,842 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-14 23:12:51,842 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-14 23:12:51,842 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-14 23:12:51,842 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-14 23:12:51,842 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-14 23:12:51,842 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-14 23:12:51,842 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-14 23:12:51,843 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-14 23:12:51,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-14 23:12:51,843 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-14 23:12:51,843 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-14 23:12:51,843 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-14 23:12:51,843 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-14 23:12:51,844 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-14 23:12:51,844 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-14 23:12:51,844 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-14 23:12:51,844 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-14 23:12:51,844 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-14 23:12:51,844 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-14 23:12:51,844 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-14 23:12:51,845 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-14 23:12:51,845 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-14 23:12:51,845 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-14 23:12:51,845 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-14 23:12:51,845 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-14 23:12:51,845 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-14 23:12:51,845 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-14 23:12:51,846 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-14 23:12:51,846 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-14 23:12:51,846 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-14 23:12:51,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:12:51,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:12:51,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:12:51,847 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-10-14 23:12:51,847 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_remove_last [2019-10-14 23:12:51,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:12:51,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:12:51,847 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:12:51,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:12:51,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-14 23:12:51,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:12:51,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:12:51,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:12:52,201 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-14 23:12:52,397 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:12:52,397 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-14 23:12:52,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:12:52 BoogieIcfgContainer [2019-10-14 23:12:52,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:12:52,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:12:52,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:12:52,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:12:52,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:12:51" (1/3) ... [2019-10-14 23:12:52,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150d313b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:12:52, skipping insertion in model container [2019-10-14 23:12:52,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:12:51" (2/3) ... [2019-10-14 23:12:52,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150d313b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:12:52, skipping insertion in model container [2019-10-14 23:12:52,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:12:52" (3/3) ... [2019-10-14 23:12:52,415 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_remove_all_reverse.i [2019-10-14 23:12:52,427 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:12:52,435 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:12:52,447 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:12:52,477 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:12:52,478 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:12:52,478 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:12:52,479 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:12:52,479 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:12:52,479 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:12:52,479 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:12:52,479 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:12:52,500 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-10-14 23:12:52,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-14 23:12:52,507 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:52,508 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:12:52,511 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:52,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:52,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1597421219, now seen corresponding path program 1 times [2019-10-14 23:12:52,525 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:52,525 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180841777] [2019-10-14 23:12:52,526 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:52,526 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:52,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:52,863 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 23:12:52,864 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180841777] [2019-10-14 23:12:52,864 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:12:52,865 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:12:52,865 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903189149] [2019-10-14 23:12:52,870 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:12:52,870 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:12:52,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:12:52,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:12:52,908 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2019-10-14 23:12:53,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:12:53,076 INFO L93 Difference]: Finished difference Result 71 states and 90 transitions. [2019-10-14 23:12:53,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:12:53,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2019-10-14 23:12:53,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:12:53,088 INFO L225 Difference]: With dead ends: 71 [2019-10-14 23:12:53,088 INFO L226 Difference]: Without dead ends: 39 [2019-10-14 23:12:53,092 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:12:53,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-14 23:12:53,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-10-14 23:12:53,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-14 23:12:53,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2019-10-14 23:12:53,139 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 24 [2019-10-14 23:12:53,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:12:53,141 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2019-10-14 23:12:53,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:12:53,141 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2019-10-14 23:12:53,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-14 23:12:53,143 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:53,143 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:12:53,143 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:53,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:53,144 INFO L82 PathProgramCache]: Analyzing trace with hash 657162430, now seen corresponding path program 1 times [2019-10-14 23:12:53,144 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:53,144 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179585873] [2019-10-14 23:12:53,145 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:53,145 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:53,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:53,304 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 23:12:53,305 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179585873] [2019-10-14 23:12:53,305 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:12:53,306 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:12:53,306 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265086226] [2019-10-14 23:12:53,307 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:12:53,308 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:12:53,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:12:53,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:12:53,308 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 7 states. [2019-10-14 23:12:53,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:12:53,565 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2019-10-14 23:12:53,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:12:53,565 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2019-10-14 23:12:53,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:12:53,567 INFO L225 Difference]: With dead ends: 63 [2019-10-14 23:12:53,567 INFO L226 Difference]: Without dead ends: 42 [2019-10-14 23:12:53,568 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:12:53,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-14 23:12:53,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2019-10-14 23:12:53,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-14 23:12:53,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2019-10-14 23:12:53,578 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 24 [2019-10-14 23:12:53,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:12:53,578 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2019-10-14 23:12:53,578 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:12:53,579 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2019-10-14 23:12:53,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-14 23:12:53,580 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:53,580 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:12:53,580 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:53,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:53,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1280322166, now seen corresponding path program 1 times [2019-10-14 23:12:53,581 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:53,581 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776059596] [2019-10-14 23:12:53,581 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:53,582 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:53,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:53,747 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:12:53,748 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776059596] [2019-10-14 23:12:53,748 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:12:53,748 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:12:53,748 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322925506] [2019-10-14 23:12:53,750 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:12:53,750 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:12:53,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:12:53,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:12:53,751 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 6 states. [2019-10-14 23:12:53,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:12:53,903 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2019-10-14 23:12:53,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:12:53,906 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2019-10-14 23:12:53,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:12:53,907 INFO L225 Difference]: With dead ends: 47 [2019-10-14 23:12:53,907 INFO L226 Difference]: Without dead ends: 43 [2019-10-14 23:12:53,908 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:12:53,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-14 23:12:53,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2019-10-14 23:12:53,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-14 23:12:53,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2019-10-14 23:12:53,924 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 32 [2019-10-14 23:12:53,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:12:53,925 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2019-10-14 23:12:53,925 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:12:53,925 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2019-10-14 23:12:53,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-14 23:12:53,927 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:53,927 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:12:53,927 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:53,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:53,928 INFO L82 PathProgramCache]: Analyzing trace with hash 410004661, now seen corresponding path program 1 times [2019-10-14 23:12:53,928 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:53,929 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074936742] [2019-10-14 23:12:53,929 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:53,929 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:53,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:54,175 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:12:54,176 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074936742] [2019-10-14 23:12:54,176 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:12:54,177 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:12:54,177 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843748537] [2019-10-14 23:12:54,178 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:12:54,178 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:12:54,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:12:54,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:12:54,179 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 9 states. [2019-10-14 23:12:54,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:12:54,569 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2019-10-14 23:12:54,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:12:54,569 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2019-10-14 23:12:54,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:12:54,571 INFO L225 Difference]: With dead ends: 58 [2019-10-14 23:12:54,571 INFO L226 Difference]: Without dead ends: 41 [2019-10-14 23:12:54,571 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:12:54,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-14 23:12:54,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-10-14 23:12:54,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-14 23:12:54,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2019-10-14 23:12:54,579 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 42 [2019-10-14 23:12:54,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:12:54,579 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2019-10-14 23:12:54,580 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:12:54,580 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2019-10-14 23:12:54,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-14 23:12:54,581 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:54,581 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:12:54,581 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:54,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:54,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1436962146, now seen corresponding path program 1 times [2019-10-14 23:12:54,582 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:54,582 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791037174] [2019-10-14 23:12:54,583 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:54,583 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:54,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:54,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:54,722 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:12:54,723 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791037174] [2019-10-14 23:12:54,723 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:12:54,723 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:12:54,723 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305627316] [2019-10-14 23:12:54,724 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:12:54,724 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:12:54,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:12:54,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:12:54,725 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2019-10-14 23:12:54,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:12:54,901 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2019-10-14 23:12:54,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:12:54,901 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2019-10-14 23:12:54,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:12:54,902 INFO L225 Difference]: With dead ends: 62 [2019-10-14 23:12:54,903 INFO L226 Difference]: Without dead ends: 43 [2019-10-14 23:12:54,903 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:12:54,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-14 23:12:54,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-10-14 23:12:54,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-14 23:12:54,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2019-10-14 23:12:54,911 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 45 [2019-10-14 23:12:54,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:12:54,912 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2019-10-14 23:12:54,912 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:12:54,912 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2019-10-14 23:12:54,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-14 23:12:54,913 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:54,913 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:12:54,914 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:54,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:54,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1302090595, now seen corresponding path program 1 times [2019-10-14 23:12:54,914 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:54,914 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080178515] [2019-10-14 23:12:54,915 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:54,915 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:54,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:55,072 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-14 23:12:55,072 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080178515] [2019-10-14 23:12:55,073 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138955042] [2019-10-14 23:12:55,073 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 23:12:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:55,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 23:12:55,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:12:55,253 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-14 23:12:55,254 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:12:55,254 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 10 [2019-10-14 23:12:55,254 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648622792] [2019-10-14 23:12:55,255 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:12:55,255 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:12:55,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:12:55,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:12:55,256 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 10 states. [2019-10-14 23:12:55,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:12:55,431 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2019-10-14 23:12:55,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:12:55,432 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2019-10-14 23:12:55,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:12:55,433 INFO L225 Difference]: With dead ends: 52 [2019-10-14 23:12:55,433 INFO L226 Difference]: Without dead ends: 48 [2019-10-14 23:12:55,433 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:12:55,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-14 23:12:55,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2019-10-14 23:12:55,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-10-14 23:12:55,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2019-10-14 23:12:55,441 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 47 [2019-10-14 23:12:55,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:12:55,441 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2019-10-14 23:12:55,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:12:55,442 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2019-10-14 23:12:55,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-14 23:12:55,443 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:12:55,443 INFO L380 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:12:55,646 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:12:55,647 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:12:55,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:12:55,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1450863914, now seen corresponding path program 2 times [2019-10-14 23:12:55,648 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:12:55,648 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027683849] [2019-10-14 23:12:55,648 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:55,648 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:12:55,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:12:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:12:56,580 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-14 23:12:56,581 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027683849] [2019-10-14 23:12:56,581 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435858294] [2019-10-14 23:12:56,581 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 23:12:56,725 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-14 23:12:56,725 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:12:56,727 INFO L256 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 87 conjunts are in the unsatisfiable core [2019-10-14 23:12:56,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:12:57,004 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 23:12:57,004 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:12:57,012 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:12:57,013 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-10-14 23:12:57,013 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:16 [2019-10-14 23:12:57,458 INFO L341 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2019-10-14 23:12:57,459 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 46 [2019-10-14 23:12:57,460 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:12:57,471 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:12:57,481 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:12:57,483 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 40 [2019-10-14 23:12:57,484 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 23:12:57,493 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:12:57,494 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:12:57,494 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:74, output treesize:46 [2019-10-14 23:12:57,645 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-14 23:12:57,645 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:12:57,645 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 19] total 39 [2019-10-14 23:12:57,646 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052382642] [2019-10-14 23:12:57,647 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-10-14 23:12:57,647 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:12:57,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-10-14 23:12:57,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1378, Unknown=0, NotChecked=0, Total=1482 [2019-10-14 23:12:57,648 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 39 states. [2019-10-14 23:12:58,948 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2019-10-14 23:13:00,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:13:00,282 INFO L93 Difference]: Finished difference Result 96 states and 112 transitions. [2019-10-14 23:13:00,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-10-14 23:13:00,288 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 62 [2019-10-14 23:13:00,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:13:00,292 INFO L225 Difference]: With dead ends: 96 [2019-10-14 23:13:00,292 INFO L226 Difference]: Without dead ends: 70 [2019-10-14 23:13:00,294 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=330, Invalid=3830, Unknown=0, NotChecked=0, Total=4160 [2019-10-14 23:13:00,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-10-14 23:13:00,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 53. [2019-10-14 23:13:00,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-10-14 23:13:00,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2019-10-14 23:13:00,304 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 62 [2019-10-14 23:13:00,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:13:00,305 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2019-10-14 23:13:00,305 INFO L463 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-10-14 23:13:00,305 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2019-10-14 23:13:00,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-10-14 23:13:00,306 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:13:00,306 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:13:00,510 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:13:00,511 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:13:00,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:13:00,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1060298193, now seen corresponding path program 1 times [2019-10-14 23:13:00,512 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:13:00,512 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746389244] [2019-10-14 23:13:00,512 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:13:00,512 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:13:00,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:13:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-14 23:13:00,663 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746389244] [2019-10-14 23:13:00,664 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821020594] [2019-10-14 23:13:00,664 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 23:13:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:00,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-14 23:13:00,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:13:00,837 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:00,838 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 48 [2019-10-14 23:13:00,839 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:00,843 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:00,844 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 23:13:00,856 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:01,058 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:13:01,060 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.UnsupportedOperationException: expected NNF at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.UnsupportedOperationException: expected NNF at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:236) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:74) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:275) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-14 23:13:01,065 INFO L168 Benchmark]: Toolchain (without parser) took 10036.36 ms. Allocated memory was 140.0 MB in the beginning and 314.6 MB in the end (delta: 174.6 MB). Free memory was 103.5 MB in the beginning and 89.9 MB in the end (delta: 13.6 MB). Peak memory consumption was 188.2 MB. Max. memory is 7.1 GB. [2019-10-14 23:13:01,066 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 123.3 MB in the beginning and 123.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-14 23:13:01,067 INFO L168 Benchmark]: CACSL2BoogieTranslator took 670.84 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 103.3 MB in the beginning and 166.6 MB in the end (delta: -63.2 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:13:01,068 INFO L168 Benchmark]: Boogie Preprocessor took 73.16 ms. Allocated memory is still 203.4 MB. Free memory was 166.6 MB in the beginning and 163.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-10-14 23:13:01,068 INFO L168 Benchmark]: RCFGBuilder took 624.48 ms. Allocated memory is still 203.4 MB. Free memory was 163.9 MB in the beginning and 115.4 MB in the end (delta: 48.5 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. [2019-10-14 23:13:01,069 INFO L168 Benchmark]: TraceAbstraction took 8663.00 ms. Allocated memory was 203.4 MB in the beginning and 314.6 MB in the end (delta: 111.1 MB). Free memory was 115.4 MB in the beginning and 89.9 MB in the end (delta: 25.4 MB). Peak memory consumption was 136.6 MB. Max. memory is 7.1 GB. [2019-10-14 23:13:01,078 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 123.3 MB in the beginning and 123.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 670.84 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 103.3 MB in the beginning and 166.6 MB in the end (delta: -63.2 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.16 ms. Allocated memory is still 203.4 MB. Free memory was 166.6 MB in the beginning and 163.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 624.48 ms. Allocated memory is still 203.4 MB. Free memory was 163.9 MB in the beginning and 115.4 MB in the end (delta: 48.5 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8663.00 ms. Allocated memory was 203.4 MB in the beginning and 314.6 MB in the end (delta: 111.1 MB). Free memory was 115.4 MB in the beginning and 89.9 MB in the end (delta: 25.4 MB). Peak memory consumption was 136.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.UnsupportedOperationException: expected NNF de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.UnsupportedOperationException: expected NNF: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...