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/sll2n_append_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 11:01:38,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 11:01:38,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 11:01:38,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 11:01:38,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 11:01:38,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 11:01:38,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 11:01:38,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 11:01:38,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 11:01:38,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 11:01:38,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 11:01:38,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 11:01:38,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 11:01:38,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 11:01:38,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 11:01:38,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 11:01:38,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 11:01:38,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 11:01:38,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 11:01:38,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 11:01:38,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 11:01:38,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 11:01:38,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 11:01:38,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 11:01:38,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 11:01:38,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 11:01:38,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 11:01:38,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 11:01:38,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 11:01:38,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 11:01:38,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 11:01:38,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 11:01:38,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 11:01:38,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 11:01:38,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 11:01:38,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 11:01:38,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 11:01:38,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 11:01:38,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 11:01:38,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 11:01:38,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 11:01:38,827 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 [2019-10-02 11:01:38,843 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 11:01:38,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 11:01:38,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-02 11:01:38,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-02 11:01:38,848 INFO L138 SettingsManager]: * Use SBE=true [2019-10-02 11:01:38,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 11:01:38,849 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 11:01:38,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-02 11:01:38,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 11:01:38,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 11:01:38,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 11:01:38,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 11:01:38,851 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 11:01:38,851 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 11:01:38,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 11:01:38,852 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-02 11:01:38,852 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 11:01:38,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 11:01:38,852 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 11:01:38,853 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-02 11:01:38,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-02 11:01:38,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 11:01:38,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 11:01:38,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 11:01:38,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-02 11:01:38,854 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-02 11:01:38,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 11:01:38,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-02 11:01:38,855 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 11:01:38,909 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 11:01:38,923 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 11:01:38,927 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 11:01:38,928 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 11:01:38,929 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 11:01:38,930 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_append_equal.i [2019-10-02 11:01:38,996 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/637d6307a/93a2ae2afed14c4d82b7879983e1f85e/FLAGb8ab687b5 [2019-10-02 11:01:39,527 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 11:01:39,528 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_append_equal.i [2019-10-02 11:01:39,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/637d6307a/93a2ae2afed14c4d82b7879983e1f85e/FLAGb8ab687b5 [2019-10-02 11:01:39,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/637d6307a/93a2ae2afed14c4d82b7879983e1f85e [2019-10-02 11:01:39,828 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 11:01:39,830 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 11:01:39,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 11:01:39,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 11:01:39,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 11:01:39,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:01:39" (1/1) ... [2019-10-02 11:01:39,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47c0bcf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:01:39, skipping insertion in model container [2019-10-02 11:01:39,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 11:01:39" (1/1) ... [2019-10-02 11:01:39,846 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 11:01:39,891 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 11:01:40,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:01:40,330 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 11:01:40,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 11:01:40,439 INFO L192 MainTranslator]: Completed translation [2019-10-02 11:01:40,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:01:40 WrapperNode [2019-10-02 11:01:40,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 11:01:40,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 11:01:40,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 11:01:40,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 11:01:40,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:01:40" (1/1) ... [2019-10-02 11:01:40,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:01:40" (1/1) ... [2019-10-02 11:01:40,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:01:40" (1/1) ... [2019-10-02 11:01:40,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:01:40" (1/1) ... [2019-10-02 11:01:40,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:01:40" (1/1) ... [2019-10-02 11:01:40,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:01:40" (1/1) ... [2019-10-02 11:01:40,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:01:40" (1/1) ... [2019-10-02 11:01:40,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 11:01:40,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 11:01:40,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 11:01:40,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 11:01:40,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:01:40" (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 [2019-10-02 11:01:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 11:01:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 11:01:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-02 11:01:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-02 11:01:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-02 11:01:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-02 11:01:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-10-02 11:01:40,584 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-10-02 11:01:40,584 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2019-10-02 11:01:40,584 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 11:01:40,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 11:01:40,585 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-02 11:01:40,585 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-02 11:01:40,586 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-02 11:01:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-02 11:01:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-02 11:01:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-02 11:01:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-02 11:01:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-02 11:01:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-02 11:01:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-02 11:01:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-02 11:01:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-02 11:01:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-02 11:01:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-02 11:01:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-02 11:01:40,589 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-02 11:01:40,589 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-02 11:01:40,589 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-02 11:01:40,591 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-02 11:01:40,592 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-02 11:01:40,592 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-02 11:01:40,592 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-02 11:01:40,592 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-02 11:01:40,592 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-02 11:01:40,592 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-02 11:01:40,592 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-02 11:01:40,593 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-02 11:01:40,593 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-02 11:01:40,593 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-02 11:01:40,594 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-02 11:01:40,594 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-02 11:01:40,594 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-02 11:01:40,594 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-02 11:01:40,594 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-02 11:01:40,595 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-02 11:01:40,595 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-02 11:01:40,595 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-02 11:01:40,595 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-02 11:01:40,595 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-02 11:01:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-02 11:01:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-02 11:01:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-02 11:01:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-02 11:01:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-02 11:01:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-02 11:01:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-02 11:01:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-02 11:01:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-02 11:01:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-02 11:01:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-02 11:01:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-02 11:01:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-02 11:01:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-02 11:01:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-02 11:01:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-02 11:01:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-02 11:01:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-02 11:01:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-02 11:01:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-02 11:01:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-02 11:01:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-02 11:01:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-02 11:01:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-02 11:01:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-02 11:01:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-02 11:01:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 11:01:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-02 11:01:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-02 11:01:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-02 11:01:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-02 11:01:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-02 11:01:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-02 11:01:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-02 11:01:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-02 11:01:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-02 11:01:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-02 11:01:40,607 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-02 11:01:40,607 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-02 11:01:40,607 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-02 11:01:40,607 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-02 11:01:40,608 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-02 11:01:40,608 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-02 11:01:40,608 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-02 11:01:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-02 11:01:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-02 11:01:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-02 11:01:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-02 11:01:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-02 11:01:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-02 11:01:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-02 11:01:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-02 11:01:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-02 11:01:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-02 11:01:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-02 11:01:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-02 11:01:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-02 11:01:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-02 11:01:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-02 11:01:40,611 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-02 11:01:40,611 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-02 11:01:40,611 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-02 11:01:40,611 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-02 11:01:40,611 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-02 11:01:40,611 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-02 11:01:40,611 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-02 11:01:40,612 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-02 11:01:40,612 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-02 11:01:40,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-02 11:01:40,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-02 11:01:40,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 11:01:40,613 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-10-02 11:01:40,613 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-10-02 11:01:40,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-02 11:01:40,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 11:01:40,613 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2019-10-02 11:01:40,613 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 11:01:40,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 11:01:40,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-02 11:01:40,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 11:01:40,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 11:01:40,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 11:01:40,979 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-02 11:01:41,195 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 11:01:41,196 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-02 11:01:41,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:01:41 BoogieIcfgContainer [2019-10-02 11:01:41,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 11:01:41,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 11:01:41,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 11:01:41,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 11:01:41,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 11:01:39" (1/3) ... [2019-10-02 11:01:41,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716ed398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:01:41, skipping insertion in model container [2019-10-02 11:01:41,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 11:01:40" (2/3) ... [2019-10-02 11:01:41,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716ed398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:01:41, skipping insertion in model container [2019-10-02 11:01:41,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:01:41" (3/3) ... [2019-10-02 11:01:41,206 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_append_equal.i [2019-10-02 11:01:41,214 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 11:01:41,222 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 11:01:41,240 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 11:01:41,268 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-02 11:01:41,268 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 11:01:41,268 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-02 11:01:41,269 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 11:01:41,269 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 11:01:41,269 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 11:01:41,269 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 11:01:41,269 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 11:01:41,269 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 11:01:41,289 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2019-10-02 11:01:41,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-02 11:01:41,296 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:01:41,297 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:01:41,300 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:01:41,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:01:41,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1667158038, now seen corresponding path program 1 times [2019-10-02 11:01:41,308 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:01:41,309 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:01:41,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:01:41,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:01:41,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:01:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:01:41,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:01:41,505 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:01:41,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 11:01:41,514 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 11:01:41,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 11:01:41,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 11:01:41,533 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2019-10-02 11:01:41,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:01:41,578 INFO L93 Difference]: Finished difference Result 88 states and 111 transitions. [2019-10-02 11:01:41,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 11:01:41,580 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2019-10-02 11:01:41,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:01:41,588 INFO L225 Difference]: With dead ends: 88 [2019-10-02 11:01:41,588 INFO L226 Difference]: Without dead ends: 37 [2019-10-02 11:01:41,591 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 11:01:41,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-02 11:01:41,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-10-02 11:01:41,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-02 11:01:41,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2019-10-02 11:01:41,630 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 29 [2019-10-02 11:01:41,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:01:41,631 INFO L475 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2019-10-02 11:01:41,631 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 11:01:41,631 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2019-10-02 11:01:41,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-02 11:01:41,634 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:01:41,634 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 11:01:41,635 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:01:41,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:01:41,635 INFO L82 PathProgramCache]: Analyzing trace with hash 937001954, now seen corresponding path program 1 times [2019-10-02 11:01:41,636 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:01:41,636 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:01:41,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:01:41,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:01:41,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:01:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:01:41,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:01:41,849 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:01:41,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 11:01:41,851 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 11:01:41,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 11:01:41,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 11:01:41,852 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 5 states. [2019-10-02 11:01:41,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:01:41,917 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2019-10-02 11:01:41,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-02 11:01:41,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-10-02 11:01:41,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:01:41,919 INFO L225 Difference]: With dead ends: 66 [2019-10-02 11:01:41,919 INFO L226 Difference]: Without dead ends: 41 [2019-10-02 11:01:41,921 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-02 11:01:41,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-02 11:01:41,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2019-10-02 11:01:41,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-02 11:01:41,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2019-10-02 11:01:41,931 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 29 [2019-10-02 11:01:41,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:01:41,932 INFO L475 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2019-10-02 11:01:41,932 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 11:01:41,932 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2019-10-02 11:01:41,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-02 11:01:41,934 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:01:41,934 INFO L411 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] [2019-10-02 11:01:41,934 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:01:41,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:01:41,935 INFO L82 PathProgramCache]: Analyzing trace with hash -496897929, now seen corresponding path program 1 times [2019-10-02 11:01:41,935 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:01:41,935 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:01:41,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:01:41,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:01:41,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:01:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:01:42,097 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-02 11:01:42,097 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 11:01:42,098 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 11:01:42,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:01:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:01:42,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-02 11:01:42,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:01:42,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 11:01:42,363 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 11:01:42,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-10-02 11:01:42,365 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 11:01:42,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 11:01:42,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-02 11:01:42,367 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 6 states. [2019-10-02 11:01:42,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:01:42,452 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2019-10-02 11:01:42,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-02 11:01:42,455 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2019-10-02 11:01:42,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:01:42,458 INFO L225 Difference]: With dead ends: 70 [2019-10-02 11:01:42,458 INFO L226 Difference]: Without dead ends: 45 [2019-10-02 11:01:42,459 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-02 11:01:42,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-02 11:01:42,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2019-10-02 11:01:42,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-02 11:01:42,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2019-10-02 11:01:42,476 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 38 [2019-10-02 11:01:42,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:01:42,476 INFO L475 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2019-10-02 11:01:42,476 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 11:01:42,477 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2019-10-02 11:01:42,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-02 11:01:42,484 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:01:42,484 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-02 11:01:42,484 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:01:42,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:01:42,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1152263294, now seen corresponding path program 2 times [2019-10-02 11:01:42,485 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:01:42,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:01:42,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:01:42,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:01:42,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:01:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:01:42,851 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-02 11:01:42,851 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:01:42,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-02 11:01:42,852 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-02 11:01:42,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-02 11:01:42,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-10-02 11:01:42,853 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 12 states. [2019-10-02 11:01:43,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:01:43,410 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2019-10-02 11:01:43,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-02 11:01:43,410 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2019-10-02 11:01:43,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:01:43,412 INFO L225 Difference]: With dead ends: 57 [2019-10-02 11:01:43,412 INFO L226 Difference]: Without dead ends: 55 [2019-10-02 11:01:43,413 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2019-10-02 11:01:43,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-10-02 11:01:43,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2019-10-02 11:01:43,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-10-02 11:01:43,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2019-10-02 11:01:43,423 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 47 [2019-10-02 11:01:43,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:01:43,423 INFO L475 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2019-10-02 11:01:43,423 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-02 11:01:43,423 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2019-10-02 11:01:43,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-02 11:01:43,425 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:01:43,425 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-02 11:01:43,426 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:01:43,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:01:43,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1152264968, now seen corresponding path program 1 times [2019-10-02 11:01:43,426 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:01:43,426 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:01:43,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:01:43,430 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-02 11:01:43,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:01:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:01:43,572 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-02 11:01:43,573 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 11:01:43,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-02 11:01:43,574 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-02 11:01:43,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-02 11:01:43,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-02 11:01:43,574 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 10 states. [2019-10-02 11:01:43,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 11:01:43,736 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2019-10-02 11:01:43,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-02 11:01:43,737 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2019-10-02 11:01:43,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 11:01:43,739 INFO L225 Difference]: With dead ends: 55 [2019-10-02 11:01:43,739 INFO L226 Difference]: Without dead ends: 52 [2019-10-02 11:01:43,739 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-10-02 11:01:43,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-10-02 11:01:43,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2019-10-02 11:01:43,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-10-02 11:01:43,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2019-10-02 11:01:43,747 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 47 [2019-10-02 11:01:43,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 11:01:43,748 INFO L475 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2019-10-02 11:01:43,748 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-02 11:01:43,748 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2019-10-02 11:01:43,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-02 11:01:43,750 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 11:01:43,750 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-02 11:01:43,750 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 11:01:43,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 11:01:43,751 INFO L82 PathProgramCache]: Analyzing trace with hash 776583197, now seen corresponding path program 1 times [2019-10-02 11:01:43,751 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 11:01:43,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 11:01:43,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:01:43,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:01:43,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 11:01:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:01:44,170 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-02 11:01:44,170 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 11:01:44,171 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 11:01:44,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 11:01:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 11:01:44,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 39 conjunts are in the unsatisfiable core [2019-10-02 11:01:44,351 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 11:01:44,487 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2019-10-02 11:01:44,488 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-02 11:01:44,494 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-02 11:01:44,495 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-02 11:01:44,495 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-10-02 11:01:46,563 WARN L860 $PredicateComparison]: unable to prove that (exists ((node_create_~temp~0.offset Int) (node_create_~temp~0.base Int)) (and (<= (+ |c_#StackHeapBarrier| 1) node_create_~temp~0.base) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base (store (store (select |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base) (+ node_create_~temp~0.offset 4) 0) node_create_~temp~0.offset (select (select |c_#memory_$Pointer$.base| node_create_~temp~0.base) node_create_~temp~0.offset)))))) is different from true