java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:23:54,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:23:54,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:23:54,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 01:23:54,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 01:23:54,655 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 01:23:54,657 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 01:23:54,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 01:23:54,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 01:23:54,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 01:23:54,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 01:23:54,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 01:23:54,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:23:54,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:23:54,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:23:54,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:23:54,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:23:54,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:23:54,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:23:54,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:23:54,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:23:54,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:23:54,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:23:54,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:23:54,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-08 01:23:54,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-08 01:23:54,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-08 01:23:54,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-08 01:23:54,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-08 01:23:54,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-08 01:23:54,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 01:23:54,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 01:23:54,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 01:23:54,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 01:23:54,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 01:23:54,699 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 01:23:54,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 01:23:54,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 01:23:54,700 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:23:54,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:23:54,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:23:54,707 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 [2019-09-08 01:23:54,729 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:23:54,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:23:54,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:23:54,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:23:54,732 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:23:54,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:23:54,733 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:23:54,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:23:54,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:23:54,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:23:54,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:23:54,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:23:54,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:23:54,735 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:23:54,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:23:54,735 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:23:54,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:23:54,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:23:54,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:23:54,736 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:23:54,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:23:54,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:23:54,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:23:54,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:23:54,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:23:54,739 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:23:54,739 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:23:54,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:23:54,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:23:54,769 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:23:54,788 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:23:54,792 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:23:54,793 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:23:54,794 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:23:54,795 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i [2019-09-08 01:23:54,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0859a1dc2/14e52a9aaa5a43afb95b15dfba3a9aca/FLAGf165c5c4b [2019-09-08 01:23:55,409 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:23:55,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i [2019-09-08 01:23:55,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0859a1dc2/14e52a9aaa5a43afb95b15dfba3a9aca/FLAGf165c5c4b [2019-09-08 01:23:55,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0859a1dc2/14e52a9aaa5a43afb95b15dfba3a9aca [2019-09-08 01:23:55,777 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:23:55,779 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:23:55,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:55,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:23:55,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:23:55,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:55" (1/1) ... [2019-09-08 01:23:55,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db245f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:55, skipping insertion in model container [2019-09-08 01:23:55,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:23:55" (1/1) ... [2019-09-08 01:23:55,791 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:23:55,838 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:23:56,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:56,323 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:23:56,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:23:56,445 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:23:56,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:56 WrapperNode [2019-09-08 01:23:56,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:23:56,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:23:56,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:23:56,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:23:56,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:56" (1/1) ... [2019-09-08 01:23:56,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:56" (1/1) ... [2019-09-08 01:23:56,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:56" (1/1) ... [2019-09-08 01:23:56,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:56" (1/1) ... [2019-09-08 01:23:56,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:56" (1/1) ... [2019-09-08 01:23:56,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:56" (1/1) ... [2019-09-08 01:23:56,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:56" (1/1) ... [2019-09-08 01:23:56,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:23:56,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:23:56,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:23:56,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:23:56,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:56" (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 [2019-09-08 01:23:56,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:23:56,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:23:56,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-08 01:23:56,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-08 01:23:56,605 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2019-09-08 01:23:56,605 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2019-09-08 01:23:56,605 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_node [2019-09-08 01:23:56,606 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sll [2019-09-08 01:23:56,606 INFO L138 BoogieDeclarations]: Found implementation of procedure init_back_link [2019-09-08 01:23:56,606 INFO L138 BoogieDeclarations]: Found implementation of procedure reverse_dll [2019-09-08 01:23:56,606 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_fw_link [2019-09-08 01:23:56,606 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_next [2019-09-08 01:23:56,606 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_prev [2019-09-08 01:23:56,607 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:23:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:23:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-08 01:23:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-08 01:23:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-08 01:23:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-08 01:23:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-08 01:23:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-08 01:23:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-08 01:23:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-08 01:23:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-08 01:23:56,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-08 01:23:56,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-08 01:23:56,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-08 01:23:56,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-08 01:23:56,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-08 01:23:56,609 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-08 01:23:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-08 01:23:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-08 01:23:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-08 01:23:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-08 01:23:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-08 01:23:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-08 01:23:56,610 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-08 01:23:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-08 01:23:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-08 01:23:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-08 01:23:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-08 01:23:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-08 01:23:56,611 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-08 01:23:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-08 01:23:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-08 01:23:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-08 01:23:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-08 01:23:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-08 01:23:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-08 01:23:56,612 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-08 01:23:56,613 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-08 01:23:56,613 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-08 01:23:56,613 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-08 01:23:56,613 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-08 01:23:56,613 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-08 01:23:56,613 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-08 01:23:56,613 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-08 01:23:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-08 01:23:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-08 01:23:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-08 01:23:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-08 01:23:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-08 01:23:56,614 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-08 01:23:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-08 01:23:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-08 01:23:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-08 01:23:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-08 01:23:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-08 01:23:56,615 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-08 01:23:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-08 01:23:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-08 01:23:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-08 01:23:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-08 01:23:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-08 01:23:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-08 01:23:56,616 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-08 01:23:56,617 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-08 01:23:56,617 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-08 01:23:56,617 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-08 01:23:56,617 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-08 01:23:56,617 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-08 01:23:56,617 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-08 01:23:56,617 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-08 01:23:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-08 01:23:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-08 01:23:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-08 01:23:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-08 01:23:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-08 01:23:56,618 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-08 01:23:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-08 01:23:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-08 01:23:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-08 01:23:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-08 01:23:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-08 01:23:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-08 01:23:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-08 01:23:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-08 01:23:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-08 01:23:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-08 01:23:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-08 01:23:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-08 01:23:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-08 01:23:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-08 01:23:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-08 01:23:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-08 01:23:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-08 01:23:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-08 01:23:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-08 01:23:56,622 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-08 01:23:56,622 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-08 01:23:56,622 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-08 01:23:56,622 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-08 01:23:56,622 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-08 01:23:56,622 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-08 01:23:56,622 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-08 01:23:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-08 01:23:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-08 01:23:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-08 01:23:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2019-09-08 01:23:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2019-09-08 01:23:56,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-08 01:23:56,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-08 01:23:56,624 INFO L130 BoogieDeclarations]: Found specification of procedure chain_node [2019-09-08 01:23:56,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-08 01:23:56,624 INFO L130 BoogieDeclarations]: Found specification of procedure create_sll [2019-09-08 01:23:56,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 01:23:56,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-08 01:23:56,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:23:56,625 INFO L130 BoogieDeclarations]: Found specification of procedure init_back_link [2019-09-08 01:23:56,625 INFO L130 BoogieDeclarations]: Found specification of procedure reverse_dll [2019-09-08 01:23:56,625 INFO L130 BoogieDeclarations]: Found specification of procedure remove_fw_link [2019-09-08 01:23:56,625 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_next [2019-09-08 01:23:56,625 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_prev [2019-09-08 01:23:56,625 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:23:56,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:23:56,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:23:57,332 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:23:57,332 INFO L283 CfgBuilder]: Removed 33 assume(true) statements. [2019-09-08 01:23:57,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:57 BoogieIcfgContainer [2019-09-08 01:23:57,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:23:57,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:23:57,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:23:57,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:23:57,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:23:55" (1/3) ... [2019-09-08 01:23:57,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb05680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:57, skipping insertion in model container [2019-09-08 01:23:57,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:23:56" (2/3) ... [2019-09-08 01:23:57,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb05680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:23:57, skipping insertion in model container [2019-09-08 01:23:57,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:23:57" (3/3) ... [2019-09-08 01:23:57,356 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-1.i [2019-09-08 01:23:57,368 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:23:57,380 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:23:57,397 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:23:57,432 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:23:57,433 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:23:57,433 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:23:57,433 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:23:57,434 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:23:57,434 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:23:57,434 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:23:57,434 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:23:57,434 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:23:57,453 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states. [2019-09-08 01:23:57,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-08 01:23:57,460 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:57,461 INFO L399 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] [2019-09-08 01:23:57,463 INFO L418 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:57,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:57,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1243342133, now seen corresponding path program 1 times [2019-09-08 01:23:57,469 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:57,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:57,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:57,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:57,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:57,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:23:57,639 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:23:57,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 01:23:57,645 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 01:23:57,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 01:23:57,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:23:57,663 INFO L87 Difference]: Start difference. First operand 117 states. Second operand 2 states. [2019-09-08 01:23:57,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:23:57,714 INFO L93 Difference]: Finished difference Result 224 states and 366 transitions. [2019-09-08 01:23:57,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 01:23:57,719 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2019-09-08 01:23:57,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:23:57,732 INFO L225 Difference]: With dead ends: 224 [2019-09-08 01:23:57,732 INFO L226 Difference]: Without dead ends: 108 [2019-09-08 01:23:57,737 INFO L628 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 [2019-09-08 01:23:57,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2019-09-08 01:23:57,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2019-09-08 01:23:57,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-09-08 01:23:57,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 128 transitions. [2019-09-08 01:23:57,808 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 128 transitions. Word has length 24 [2019-09-08 01:23:57,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:23:57,808 INFO L475 AbstractCegarLoop]: Abstraction has 108 states and 128 transitions. [2019-09-08 01:23:57,808 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 01:23:57,808 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 128 transitions. [2019-09-08 01:23:57,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-09-08 01:23:57,811 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:23:57,812 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2019-09-08 01:23:57,812 INFO L418 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:23:57,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:23:57,812 INFO L82 PathProgramCache]: Analyzing trace with hash -2076611886, now seen corresponding path program 1 times [2019-09-08 01:23:57,813 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:23:57,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:23:57,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:57,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:23:57,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:23:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:23:59,520 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:23:59,521 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:23:59,521 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-09-08 01:23:59,522 INFO L454 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-09-08 01:23:59,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-09-08 01:23:59,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2019-09-08 01:23:59,524 INFO L87 Difference]: Start difference. First operand 108 states and 128 transitions. Second operand 26 states. [2019-09-08 01:24:00,414 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2019-09-08 01:24:00,691 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-08 01:24:02,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:24:02,256 INFO L93 Difference]: Finished difference Result 154 states and 189 transitions. [2019-09-08 01:24:02,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-09-08 01:24:02,257 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 49 [2019-09-08 01:24:02,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:24:02,261 INFO L225 Difference]: With dead ends: 154 [2019-09-08 01:24:02,261 INFO L226 Difference]: Without dead ends: 151 [2019-09-08 01:24:02,263 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=133, Invalid=1349, Unknown=0, NotChecked=0, Total=1482 [2019-09-08 01:24:02,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-09-08 01:24:02,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 120. [2019-09-08 01:24:02,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-09-08 01:24:02,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 142 transitions. [2019-09-08 01:24:02,284 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 142 transitions. Word has length 49 [2019-09-08 01:24:02,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:24:02,285 INFO L475 AbstractCegarLoop]: Abstraction has 120 states and 142 transitions. [2019-09-08 01:24:02,285 INFO L476 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-09-08 01:24:02,285 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 142 transitions. [2019-09-08 01:24:02,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-09-08 01:24:02,286 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:24:02,287 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:24:02,287 INFO L418 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:24:02,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:24:02,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1536063324, now seen corresponding path program 1 times [2019-09-08 01:24:02,288 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:24:02,288 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:24:02,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:24:02,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:24:02,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:24:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:24:03,190 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:24:03,190 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 01:24:03,190 INFO L223 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 [2019-09-08 01:24:03,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:24:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:24:03,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 128 conjunts are in the unsatisfiable core [2019-09-08 01:24:03,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 01:24:03,379 INFO L341 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-09-08 01:24:03,380 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2019-09-08 01:24:03,381 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-08 01:24:03,400 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 01:24:03,401 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-09-08 01:24:03,401 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:24 [2019-09-08 01:24:03,464 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-09-08 01:24:03,464 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-08 01:24:03,470 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 01:24:03,471 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-09-08 01:24:03,471 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:3 [2019-09-08 01:24:03,551 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2019-09-08 01:24:03,551 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-08 01:24:03,556 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 01:24:03,557 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-09-08 01:24:03,557 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:3 [2019-09-08 01:24:03,839 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 01:24:03,840 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 39 [2019-09-08 01:24:03,841 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-08 01:24:03,864 INFO L567 ElimStorePlain]: treesize reduction 16, result has 76.5 percent of original size [2019-09-08 01:24:03,891 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 01:24:03,891 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 39 [2019-09-08 01:24:03,892 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-08 01:24:03,914 INFO L567 ElimStorePlain]: treesize reduction 16, result has 60.0 percent of original size [2019-09-08 01:24:03,916 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-08 01:24:03,917 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:80, output treesize:17 [2019-09-08 01:24:04,115 INFO L341 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2019-09-08 01:24:04,116 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2019-09-08 01:24:04,116 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-08 01:24:04,142 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 01:24:04,165 INFO L341 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2019-09-08 01:24:04,166 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2019-09-08 01:24:04,167 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-08 01:24:04,195 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 01:24:04,196 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-08 01:24:04,197 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:67, output treesize:59 [2019-09-08 01:24:04,398 INFO L341 Elim1Store]: treesize reduction 24, result has 68.0 percent of original size [2019-09-08 01:24:04,399 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 64 [2019-09-08 01:24:04,401 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-08 01:24:04,493 INFO L567 ElimStorePlain]: treesize reduction 24, result has 74.7 percent of original size [2019-09-08 01:24:04,578 INFO L341 Elim1Store]: treesize reduction 24, result has 68.0 percent of original size [2019-09-08 01:24:04,578 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 61 [2019-09-08 01:24:04,580 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-08 01:24:04,640 INFO L567 ElimStorePlain]: treesize reduction 28, result has 70.5 percent of original size [2019-09-08 01:24:04,641 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-08 01:24:04,641 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:83, output treesize:67 [2019-09-08 01:24:04,757 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2019-09-08 01:24:04,758 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-08 01:24:04,776 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 01:24:04,810 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 01:24:04,811 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 46 [2019-09-08 01:24:04,812 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-08 01:24:04,825 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 01:24:04,851 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 01:24:04,852 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 43 [2019-09-08 01:24:04,853 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-09-08 01:24:04,861 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 01:24:04,862 INFO L496 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-08 01:24:04,862 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 8 variables, input treesize:61, output treesize:10 [2019-09-08 01:24:25,635 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-08 01:24:25,644 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-08 01:24:25,938 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2019-09-08 01:24:25,939 INFO L341 Elim1Store]: treesize reduction 102, result has 66.8 percent of original size [2019-09-08 01:24:25,939 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 69 treesize of output 235 [2019-09-08 01:24:25,942 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-08 01:24:26,083 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 59 [2019-09-08 01:24:26,083 INFO L567 ElimStorePlain]: treesize reduction 154, result has 49.7 percent of original size [2019-09-08 01:24:26,088 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-08 01:24:26,095 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-08 01:24:26,397 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-08 01:24:26,397 INFO L341 Elim1Store]: treesize reduction 102, result has 66.8 percent of original size [2019-09-08 01:24:26,398 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 70 treesize of output 232 [2019-09-08 01:24:26,400 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-08 01:24:26,583 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2019-09-08 01:24:26,584 INFO L567 ElimStorePlain]: treesize reduction 132, result has 49.0 percent of original size [2019-09-08 01:24:26,586 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-08 01:24:26,588 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-08 01:24:26,593 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-08 01:24:26,596 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-09-08 01:24:26,597 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:207, output treesize:156 [2019-09-08 01:24:26,597 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-08 01:24:26,598 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-08 01:24:26,600 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-08 01:24:26,772 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-08 01:24:26,773 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-08 01:24:26,776 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-08 01:24:27,330 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-08 01:24:27,330 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-08 01:24:27,333 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-08 01:24:27,743 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-08 01:24:27,744 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-08 01:24:27,746 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-08 01:24:28,110 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-08 01:24:28,111 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-08 01:24:28,113 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-08 01:24:28,516 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-08 01:24:28,517 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-08 01:24:28,520 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-08 01:24:28,623 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-08 01:24:28,653 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-08 01:24:28,659 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-08 01:24:28,677 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 01:24:28,677 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 49 [2019-09-08 01:24:28,678 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-08 01:24:28,728 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 01:24:28,730 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-08 01:24:28,730 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:153, output treesize:129 [2019-09-08 01:24:28,870 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 01:24:28,871 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 104 treesize of output 71 [2019-09-08 01:24:28,872 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 01:24:28,873 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 01:24:28,874 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 01:24:28,875 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 01:24:28,876 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 01:24:28,877 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 01:24:28,878 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-08 01:24:28,953 INFO L567 ElimStorePlain]: treesize reduction 16, result has 81.8 percent of original size [2019-09-08 01:24:28,958 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-08 01:24:28,959 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-08 01:24:28,960 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19 [2019-09-08 01:24:28,961 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-08 01:24:28,975 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-08 01:24:28,975 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-08 01:24:28,976 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:144, output treesize:7 [2019-09-08 01:24:29,175 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 01:24:29,180 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 01:24:29,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 47 [2019-09-08 01:24:29,181 INFO L454 AbstractCegarLoop]: Interpolant automaton has 47 states [2019-09-08 01:24:29,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2019-09-08 01:24:29,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=2025, Unknown=9, NotChecked=0, Total=2162 [2019-09-08 01:24:29,184 INFO L87 Difference]: Start difference. First operand 120 states and 142 transitions. Second operand 47 states. [2019-09-08 01:25:09,686 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2019-09-08 01:25:19,020 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2019-09-08 01:27:00,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:27:00,602 INFO L93 Difference]: Finished difference Result 221 states and 281 transitions. [2019-09-08 01:27:00,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-09-08 01:27:00,603 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 51 [2019-09-08 01:27:00,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:27:00,607 INFO L225 Difference]: With dead ends: 221 [2019-09-08 01:27:00,607 INFO L226 Difference]: Without dead ends: 218 [2019-09-08 01:27:00,610 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 996 ImplicationChecksByTransitivity, 44.8s TimeCoverageRelationStatistics Valid=365, Invalid=5019, Unknown=18, NotChecked=0, Total=5402 [2019-09-08 01:27:00,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2019-09-08 01:27:00,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 120. [2019-09-08 01:27:00,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-09-08 01:27:00,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2019-09-08 01:27:00,652 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 141 transitions. Word has length 51 [2019-09-08 01:27:00,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:27:00,652 INFO L475 AbstractCegarLoop]: Abstraction has 120 states and 141 transitions. [2019-09-08 01:27:00,652 INFO L476 AbstractCegarLoop]: Interpolant automaton has 47 states. [2019-09-08 01:27:00,653 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 141 transitions. [2019-09-08 01:27:00,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-09-08 01:27:00,656 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:27:00,656 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:27:00,656 INFO L418 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:27:00,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:27:00,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1614179064, now seen corresponding path program 1 times [2019-09-08 01:27:00,657 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:27:00,657 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:27:00,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:27:00,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:27:00,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:27:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:27:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:27:00,811 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:27:00,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:27:00 BoogieIcfgContainer [2019-09-08 01:27:00,883 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:27:00,884 INFO L168 Benchmark]: Toolchain (without parser) took 185105.47 ms. Allocated memory was 130.5 MB in the beginning and 455.1 MB in the end (delta: 324.5 MB). Free memory was 85.0 MB in the beginning and 209.1 MB in the end (delta: -124.0 MB). Peak memory consumption was 200.5 MB. Max. memory is 7.1 GB. [2019-09-08 01:27:00,885 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 130.5 MB. Free memory is still 104.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-08 01:27:00,886 INFO L168 Benchmark]: CACSL2BoogieTranslator took 666.20 ms. Allocated memory was 130.5 MB in the beginning and 197.1 MB in the end (delta: 66.6 MB). Free memory was 84.6 MB in the beginning and 156.1 MB in the end (delta: -71.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2019-09-08 01:27:00,886 INFO L168 Benchmark]: Boogie Preprocessor took 104.51 ms. Allocated memory is still 197.1 MB. Free memory was 156.1 MB in the beginning and 153.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2019-09-08 01:27:00,887 INFO L168 Benchmark]: RCFGBuilder took 786.05 ms. Allocated memory is still 197.1 MB. Free memory was 152.4 MB in the beginning and 90.7 MB in the end (delta: 61.6 MB). Peak memory consumption was 61.6 MB. Max. memory is 7.1 GB. [2019-09-08 01:27:00,888 INFO L168 Benchmark]: TraceAbstraction took 183544.51 ms. Allocated memory was 197.1 MB in the beginning and 455.1 MB in the end (delta: 257.9 MB). Free memory was 90.7 MB in the beginning and 209.1 MB in the end (delta: -118.3 MB). Peak memory consumption was 139.6 MB. Max. memory is 7.1 GB. [2019-09-08 01:27:00,891 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 130.5 MB. Free memory is still 104.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 666.20 ms. Allocated memory was 130.5 MB in the beginning and 197.1 MB in the end (delta: 66.6 MB). Free memory was 84.6 MB in the beginning and 156.1 MB in the end (delta: -71.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.51 ms. Allocated memory is still 197.1 MB. Free memory was 156.1 MB in the beginning and 153.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 786.05 ms. Allocated memory is still 197.1 MB. Free memory was 152.4 MB in the beginning and 90.7 MB in the end (delta: 61.6 MB). Peak memory consumption was 61.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 183544.51 ms. Allocated memory was 197.1 MB in the beginning and 455.1 MB in the end (delta: 257.9 MB). Free memory was 90.7 MB in the beginning and 209.1 MB in the end (delta: -118.3 MB). Peak memory consumption was 139.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 554]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L628] const struct node *p1, *p2; VAL [p1={6:0}, p2={5:0}] [L629] CALL, EXPR create_sll(&p1, &p2) VAL [pp1={6:0}, pp2={5:0}] [L577] struct node *list = ((void *)0); VAL [list={7:0}, pp1={6:0}, pp1={6:0}, pp2={5:0}, pp2={5:0}] [L579] CALL chain_node(&list) VAL [ppnode={7:0}] [L571] CALL, EXPR alloc_node() [L562] struct node *ptr = malloc(sizeof *ptr); VAL [malloc(sizeof *ptr)={10:0}, ptr={10:0}] [L563] COND FALSE !(!ptr) VAL [malloc(sizeof *ptr)={10:0}, ptr={10:0}] [L565] ptr->next = ((void *)0) [L566] ptr->prev = ((void *)0) [L567] return ptr; VAL [\result={10:0}, malloc(sizeof *ptr)={10:0}, ptr={10:0}] [L571] RET, EXPR alloc_node() VAL [alloc_node()={10:0}, ppnode={7:0}, ppnode={7:0}] [L571] struct node *node = alloc_node(); [L572] EXPR \read(**ppnode) [L572] node->next = *ppnode [L573] *ppnode = node VAL [node={10:0}, ppnode={7:0}, ppnode={7:0}] [L579] RET chain_node(&list) VAL [list={7:0}, pp1={6:0}, pp1={6:0}, pp2={5:0}, pp2={5:0}] [L580] COND FALSE !(__VERIFIER_nondet_int()) [L581] EXPR \read(*list) [L581] *pp2 = list [L582] COND FALSE !(__VERIFIER_nondet_int()) [L584] EXPR \read(*list) [L584] *pp1 = list [L586] CALL chain_node(&list) VAL [ppnode={7:0}] [L571] CALL, EXPR alloc_node() [L562] struct node *ptr = malloc(sizeof *ptr); VAL [malloc(sizeof *ptr)={9:0}, ptr={9:0}] [L563] COND FALSE !(!ptr) VAL [malloc(sizeof *ptr)={9:0}, ptr={9:0}] [L565] ptr->next = ((void *)0) [L566] ptr->prev = ((void *)0) [L567] return ptr; VAL [\result={9:0}, malloc(sizeof *ptr)={9:0}, ptr={9:0}] [L571] RET, EXPR alloc_node() VAL [alloc_node()={9:0}, ppnode={7:0}, ppnode={7:0}] [L571] struct node *node = alloc_node(); [L572] EXPR \read(**ppnode) [L572] node->next = *ppnode [L573] *ppnode = node VAL [node={9:0}, ppnode={7:0}, ppnode={7:0}] [L586] RET chain_node(&list) VAL [list={7:0}, pp1={6:0}, pp1={6:0}, pp2={5:0}, pp2={5:0}] [L587] COND FALSE !(__VERIFIER_nondet_int()) [L588] EXPR \read(*list) [L588] return list; [L577] struct node *list = ((void *)0); [L588] return list; VAL [\result={9:0}, pp1={6:0}, pp1={6:0}, pp2={5:0}, pp2={5:0}] [L629] RET, EXPR create_sll(&p1, &p2) VAL [create_sll(&p1, &p2)={9:0}, p1={6:0}, p2={5:0}] [L629] struct node *list = create_sll(&p1, &p2); [L631] EXPR \read(*p1) [L631] EXPR \read(*p2) VAL [\read(*p1)={10:0}, \read(*p2)={10:0}, list={9:0}, p1={6:0}, p2={5:0}] [L631] CALL check_seq_next(p1, p2) VAL [beg={10:0}, end={10:0}] [L615] COND FALSE !(!(beg)) VAL [beg={10:0}, beg={10:0}, end={10:0}, end={10:0}] [L616] COND FALSE !(!(end)) VAL [beg={10:0}, beg={10:0}, end={10:0}, end={10:0}] [L617] EXPR beg->next [L617] beg = beg->next [L617] COND TRUE end != beg VAL [beg={0:0}, beg={10:0}, end={10:0}, end={10:0}] [L618] COND TRUE !(beg) VAL [beg={0:0}, beg={10:0}, end={10:0}, end={10:0}] [L618] CALL fail() [L554] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 14 procedures, 123 locations, 1 error locations. UNSAFE Result, 183.4s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 154.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 327 SDtfs, 430 SDslu, 2147 SDs, 0 SdLazy, 6268 SolverSat, 238 SolverUnsat, 60 SolverUnknown, 0 SolverNotchecked, 130.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 46.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 129 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 28.3s InterpolantComputationTime, 230 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 171 ConstructedInterpolants, 24 QuantifiedInterpolants, 245967 SizeOfPredicates, 33 NumberOfNonLiveVariables, 260 ConjunctsInSsa, 128 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 15/30 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...