/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/sll2c_prepend_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:18:01,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:18:01,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:18:01,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:18:01,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:18:01,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:18:01,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:18:01,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:18:01,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:18:01,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:18:01,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:18:01,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:18:01,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:18:01,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:18:01,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:18:01,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:18:01,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:18:01,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:18:01,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:18:01,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:18:01,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:18:01,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:18:01,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:18:01,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:18:01,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:18:01,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:18:01,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:18:01,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:18:01,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:18:01,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:18:01,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:18:01,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:18:01,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:18:01,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:18:01,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:18:01,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:18:01,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:18:01,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:18:01,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:18:01,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:18:01,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:18:01,684 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 [2019-11-06 21:18:01,707 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:18:01,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:18:01,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:18:01,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:18:01,710 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:18:01,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:18:01,710 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:18:01,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:18:01,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:18:01,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:18:01,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:18:01,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:18:01,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:18:01,713 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:18:01,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:18:01,713 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:18:01,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:18:01,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:18:01,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:18:01,714 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:18:01,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:18:01,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:18:01,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:18:01,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:18:01,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:18:01,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:18:01,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:18:01,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:18:01,716 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:18:01,987 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:18:01,999 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:18:02,003 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:18:02,004 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:18:02,004 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:18:02,005 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_prepend_unequal.i [2019-11-06 21:18:02,064 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21de5deef/2015bbba41bc4b148133a1417448c6fe/FLAGf859c2833 [2019-11-06 21:18:02,608 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:18:02,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_prepend_unequal.i [2019-11-06 21:18:02,632 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21de5deef/2015bbba41bc4b148133a1417448c6fe/FLAGf859c2833 [2019-11-06 21:18:02,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21de5deef/2015bbba41bc4b148133a1417448c6fe [2019-11-06 21:18:02,904 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:18:02,906 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:18:02,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:18:02,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:18:02,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:18:02,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:18:02" (1/1) ... [2019-11-06 21:18:02,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35682a71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:02, skipping insertion in model container [2019-11-06 21:18:02,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:18:02" (1/1) ... [2019-11-06 21:18:02,923 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:18:02,971 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:18:03,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:18:03,390 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:18:03,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:18:03,535 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:18:03,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:03 WrapperNode [2019-11-06 21:18:03,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:18:03,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:18:03,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:18:03,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:18:03,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:03" (1/1) ... [2019-11-06 21:18:03,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:03" (1/1) ... [2019-11-06 21:18:03,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:03" (1/1) ... [2019-11-06 21:18:03,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:03" (1/1) ... [2019-11-06 21:18:03,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:03" (1/1) ... [2019-11-06 21:18:03,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:03" (1/1) ... [2019-11-06 21:18:03,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:03" (1/1) ... [2019-11-06 21:18:03,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:18:03,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:18:03,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:18:03,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:18:03,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:03" (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 [2019-11-06 21:18:03,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:18:03,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:18:03,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-06 21:18:03,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-06 21:18:03,672 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-06 21:18:03,673 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-06 21:18:03,673 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-11-06 21:18:03,673 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2019-11-06 21:18:03,674 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_prepend [2019-11-06 21:18:03,674 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:18:03,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:18:03,675 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-06 21:18:03,675 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-06 21:18:03,675 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-06 21:18:03,676 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-06 21:18:03,677 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-06 21:18:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-06 21:18:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-06 21:18:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-06 21:18:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-06 21:18:03,679 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-06 21:18:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-06 21:18:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-06 21:18:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-06 21:18:03,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-06 21:18:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-06 21:18:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-06 21:18:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-06 21:18:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-06 21:18:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-06 21:18:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-06 21:18:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-06 21:18:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-06 21:18:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-06 21:18:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-06 21:18:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-06 21:18:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-06 21:18:03,684 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-06 21:18:03,684 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-06 21:18:03,684 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-06 21:18:03,684 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-06 21:18:03,684 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-06 21:18:03,684 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-06 21:18:03,685 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-06 21:18:03,685 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-06 21:18:03,685 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-06 21:18:03,685 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-06 21:18:03,685 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-06 21:18:03,685 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-06 21:18:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-06 21:18:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-06 21:18:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-06 21:18:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-06 21:18:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-06 21:18:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-06 21:18:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-06 21:18:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-06 21:18:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-06 21:18:03,687 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-06 21:18:03,687 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-06 21:18:03,687 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-06 21:18:03,687 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-06 21:18:03,687 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-06 21:18:03,687 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:18:03,687 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-06 21:18:03,687 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-06 21:18:03,687 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:18:03,688 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-06 21:18:03,688 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-06 21:18:03,688 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-06 21:18:03,688 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-06 21:18:03,688 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-06 21:18:03,688 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-06 21:18:03,688 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-06 21:18:03,689 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-06 21:18:03,689 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-06 21:18:03,689 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 21:18:03,689 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-06 21:18:03,689 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-06 21:18:03,689 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-06 21:18:03,690 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-06 21:18:03,690 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-06 21:18:03,690 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-06 21:18:03,690 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-06 21:18:03,690 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-06 21:18:03,690 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-06 21:18:03,690 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-06 21:18:03,691 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-06 21:18:03,691 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-06 21:18:03,691 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-06 21:18:03,691 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-06 21:18:03,691 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-06 21:18:03,691 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-06 21:18:03,692 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-06 21:18:03,692 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-06 21:18:03,692 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-06 21:18:03,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-06 21:18:03,692 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-06 21:18:03,692 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-06 21:18:03,692 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-06 21:18:03,693 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-06 21:18:03,693 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-06 21:18:03,693 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-06 21:18:03,693 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-06 21:18:03,693 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-06 21:18:03,693 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-06 21:18:03,693 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-06 21:18:03,694 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-06 21:18:03,694 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-06 21:18:03,694 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-06 21:18:03,694 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-06 21:18:03,694 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-06 21:18:03,694 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-06 21:18:03,694 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-06 21:18:03,695 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-06 21:18:03,695 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-06 21:18:03,695 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-06 21:18:03,695 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-06 21:18:03,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:18:03,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:18:03,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:18:03,696 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-11-06 21:18:03,696 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2019-11-06 21:18:03,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:18:03,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:18:03,696 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_prepend [2019-11-06 21:18:03,696 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:18:03,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:18:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-06 21:18:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:18:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:18:03,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:18:04,045 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-06 21:18:04,332 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:18:04,333 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-06 21:18:04,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:18:04 BoogieIcfgContainer [2019-11-06 21:18:04,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:18:04,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:18:04,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:18:04,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:18:04,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:18:02" (1/3) ... [2019-11-06 21:18:04,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655250dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:18:04, skipping insertion in model container [2019-11-06 21:18:04,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:18:03" (2/3) ... [2019-11-06 21:18:04,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655250dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:18:04, skipping insertion in model container [2019-11-06 21:18:04,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:18:04" (3/3) ... [2019-11-06 21:18:04,360 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_prepend_unequal.i [2019-11-06 21:18:04,369 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:18:04,377 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:18:04,388 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:18:04,416 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:18:04,416 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:18:04,416 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:18:04,417 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:18:04,417 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:18:04,417 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:18:04,417 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:18:04,417 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:18:04,441 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2019-11-06 21:18:04,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-06 21:18:04,449 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:18:04,450 INFO L410 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] [2019-11-06 21:18:04,452 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:18:04,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:18:04,458 INFO L82 PathProgramCache]: Analyzing trace with hash -40176771, now seen corresponding path program 1 times [2019-11-06 21:18:04,466 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:18:04,466 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825131035] [2019-11-06 21:18:04,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:18:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:04,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-06 21:18:04,868 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825131035] [2019-11-06 21:18:04,869 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:18:04,869 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 21:18:04,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316445641] [2019-11-06 21:18:04,875 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:18:04,875 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:18:04,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:18:04,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:18:04,888 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 4 states. [2019-11-06 21:18:05,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:18:05,134 INFO L93 Difference]: Finished difference Result 103 states and 133 transitions. [2019-11-06 21:18:05,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 21:18:05,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2019-11-06 21:18:05,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:18:05,145 INFO L225 Difference]: With dead ends: 103 [2019-11-06 21:18:05,146 INFO L226 Difference]: Without dead ends: 41 [2019-11-06 21:18:05,150 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:18:05,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-06 21:18:05,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-11-06 21:18:05,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-11-06 21:18:05,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2019-11-06 21:18:05,209 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 35 [2019-11-06 21:18:05,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:18:05,212 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2019-11-06 21:18:05,212 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:18:05,212 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2019-11-06 21:18:05,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-06 21:18:05,215 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:18:05,215 INFO L410 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] [2019-11-06 21:18:05,215 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:18:05,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:18:05,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1882198717, now seen corresponding path program 1 times [2019-11-06 21:18:05,216 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:18:05,216 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148976344] [2019-11-06 21:18:05,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:18:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-06 21:18:05,496 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148976344] [2019-11-06 21:18:05,496 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:18:05,497 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 21:18:05,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54055439] [2019-11-06 21:18:05,499 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:18:05,499 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:18:05,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:18:05,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:18:05,500 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 7 states. [2019-11-06 21:18:05,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:18:05,739 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2019-11-06 21:18:05,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:18:05,740 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2019-11-06 21:18:05,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:18:05,741 INFO L225 Difference]: With dead ends: 72 [2019-11-06 21:18:05,742 INFO L226 Difference]: Without dead ends: 44 [2019-11-06 21:18:05,743 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:18:05,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-06 21:18:05,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2019-11-06 21:18:05,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-06 21:18:05,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2019-11-06 21:18:05,753 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 35 [2019-11-06 21:18:05,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:18:05,754 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2019-11-06 21:18:05,754 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:18:05,754 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2019-11-06 21:18:05,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-06 21:18:05,755 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:18:05,756 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-11-06 21:18:05,756 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:18:05,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:18:05,756 INFO L82 PathProgramCache]: Analyzing trace with hash 473130955, now seen corresponding path program 1 times [2019-11-06 21:18:05,757 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:18:05,757 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318786328] [2019-11-06 21:18:05,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:18:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:06,316 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 21:18:06,317 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318786328] [2019-11-06 21:18:06,317 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397958090] [2019-11-06 21:18:06,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:18:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:06,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 45 conjunts are in the unsatisfiable core [2019-11-06 21:18:06,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:18:06,715 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 [2019-11-06 21:18:06,715 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:18:06,722 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:06,723 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:18:06,723 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-11-06 21:18:08,131 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 20 [2019-11-06 21:18:09,333 WARN L191 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 26 [2019-11-06 21:18:09,356 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:18:09,370 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:09,371 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-11-06 21:18:09,371 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:26 [2019-11-06 21:18:14,310 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 21:18:14,311 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:18:14,311 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 26 [2019-11-06 21:18:14,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122310289] [2019-11-06 21:18:14,312 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-06 21:18:14,312 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:18:14,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-06 21:18:14,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=577, Unknown=1, NotChecked=0, Total=650 [2019-11-06 21:18:14,313 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 26 states. [2019-11-06 21:18:17,081 WARN L191 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 29 [2019-11-06 21:18:21,737 WARN L191 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2019-11-06 21:18:22,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:18:22,707 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2019-11-06 21:18:22,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-06 21:18:22,707 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 43 [2019-11-06 21:18:22,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:18:22,709 INFO L225 Difference]: With dead ends: 55 [2019-11-06 21:18:22,709 INFO L226 Difference]: Without dead ends: 44 [2019-11-06 21:18:22,711 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=128, Invalid=1061, Unknown=1, NotChecked=0, Total=1190 [2019-11-06 21:18:22,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-06 21:18:22,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2019-11-06 21:18:22,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-06 21:18:22,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2019-11-06 21:18:22,719 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 43 [2019-11-06 21:18:22,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:18:22,719 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2019-11-06 21:18:22,719 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-06 21:18:22,720 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2019-11-06 21:18:22,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-06 21:18:22,721 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:18:22,721 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-11-06 21:18:22,927 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:18:22,928 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:18:22,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:18:22,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1654476681, now seen corresponding path program 1 times [2019-11-06 21:18:22,929 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:18:22,930 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429946690] [2019-11-06 21:18:22,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:18:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:23,948 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2019-11-06 21:18:24,112 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2019-11-06 21:18:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:24,480 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 21:18:24,480 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429946690] [2019-11-06 21:18:24,480 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708569409] [2019-11-06 21:18:24,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 21:18:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:18:24,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 91 conjunts are in the unsatisfiable core [2019-11-06 21:18:24,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:18:24,694 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-06 21:18:24,694 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:18:24,697 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:24,697 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:18:24,697 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-06 21:18:24,844 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:24,844 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-11-06 21:18:24,845 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:18:24,849 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:24,850 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:18:24,850 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2019-11-06 21:18:24,891 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-06 21:18:24,892 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:18:24,897 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:24,898 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:18:24,898 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-11-06 21:18:24,974 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:24,975 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 46 [2019-11-06 21:18:24,977 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 21:18:24,977 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:18:24,980 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-11-06 21:18:25,004 INFO L567 ElimStorePlain]: treesize reduction 25, result has 49.0 percent of original size [2019-11-06 21:18:25,005 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:18:25,006 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:23 [2019-11-06 21:18:25,222 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_BEFORE_CALL_1|], 5=[|v_#memory_$Pointer$.base_BEFORE_CALL_5|]} [2019-11-06 21:18:25,226 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-11-06 21:18:25,227 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-06 21:18:25,242 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:25,265 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:25,265 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 46 [2019-11-06 21:18:25,266 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:18:25,267 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:18:25,268 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:18:25,268 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 21:18:25,269 INFO L496 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-06 21:18:25,292 INFO L567 ElimStorePlain]: treesize reduction 16, result has 52.9 percent of original size [2019-11-06 21:18:25,293 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-06 21:18:25,293 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:52, output treesize:7 [2019-11-06 21:18:27,677 WARN L860 $PredicateComparison]: unable to prove that (exists ((node_create_~temp~0.base Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base (store (store (select |c_old(#memory_$Pointer$.base)| node_create_~temp~0.base) 0 0) 4 (select (select |c_#memory_$Pointer$.base| node_create_~temp~0.base) 4)))) (<= (+ |c_#StackHeapBarrier| 1) node_create_~temp~0.base) (= (store |c_old(#memory_$Pointer$.offset)| node_create_~temp~0.base (store (store (select |c_old(#memory_$Pointer$.offset)| node_create_~temp~0.base) 0 0) 4 (select (select |c_#memory_$Pointer$.offset| node_create_~temp~0.base) 4))) |c_#memory_$Pointer$.offset|) (not (= 0 node_create_~temp~0.base)))) is different from true [2019-11-06 21:18:44,829 WARN L191 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 36 [2019-11-06 21:18:44,845 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-06 21:18:44,892 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-06 21:18:44,893 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-06 21:18:44,894 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:66, output treesize:59