/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/dll2c_insert_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:16:00,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:16:00,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:16:00,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:16:00,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:16:00,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:16:00,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:16:00,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:16:00,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:16:00,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:16:00,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:16:00,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:16:00,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:16:00,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:16:00,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:16:00,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:16:00,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:16:00,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:16:00,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:16:00,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:16:00,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:16:00,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:16:00,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:16:00,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:16:00,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:16:00,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:16:00,543 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:16:00,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:16:00,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:16:00,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:16:00,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:16:00,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:16:00,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:16:00,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:16:00,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:16:00,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:16:00,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:16:00,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:16:00,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:16:00,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:16:00,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:16:00,555 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 21:16:00,584 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:16:00,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:16:00,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:16:00,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:16:00,588 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:16:00,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:16:00,594 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:16:00,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:16:00,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:16:00,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:16:00,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:16:00,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:16:00,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:16:00,596 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:16:00,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:16:00,597 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:16:00,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:16:00,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:16:00,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:16:00,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:16:00,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:16:00,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:16:00,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:16:00,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:16:00,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:16:00,603 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:16:00,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:16:00,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:16:00,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:16:00,877 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:16:00,890 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:16:00,894 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:16:00,895 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:16:00,896 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:16:00,896 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_insert_unequal.i [2019-11-06 21:16:00,959 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b715a2826/81b661e56e0c4db484bee27ef6de706a/FLAGb9ceca291 [2019-11-06 21:16:01,448 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:16:01,448 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2c_insert_unequal.i [2019-11-06 21:16:01,462 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b715a2826/81b661e56e0c4db484bee27ef6de706a/FLAGb9ceca291 [2019-11-06 21:16:01,794 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b715a2826/81b661e56e0c4db484bee27ef6de706a [2019-11-06 21:16:01,803 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:16:01,805 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:16:01,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:16:01,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:16:01,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:16:01,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:16:01" (1/1) ... [2019-11-06 21:16:01,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3360392e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:01, skipping insertion in model container [2019-11-06 21:16:01,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:16:01" (1/1) ... [2019-11-06 21:16:01,819 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:16:01,867 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:16:02,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:16:02,409 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:16:02,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:16:02,568 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:16:02,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:02 WrapperNode [2019-11-06 21:16:02,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:16:02,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:16:02,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:16:02,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:16:02,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:02" (1/1) ... [2019-11-06 21:16:02,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:02" (1/1) ... [2019-11-06 21:16:02,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:02" (1/1) ... [2019-11-06 21:16:02,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:02" (1/1) ... [2019-11-06 21:16:02,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:02" (1/1) ... [2019-11-06 21:16:02,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:02" (1/1) ... [2019-11-06 21:16:02,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:02" (1/1) ... [2019-11-06 21:16:02,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:16:02,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:16:02,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:16:02,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:16:02,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:02" (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 21:16:02,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:16:02,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:16:02,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-06 21:16:02,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-06 21:16:02,707 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-06 21:16:02,707 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-06 21:16:02,707 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2019-11-06 21:16:02,707 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2019-11-06 21:16:02,708 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_insert [2019-11-06 21:16:02,708 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:16:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:16:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-06 21:16:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-06 21:16:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-06 21:16:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-06 21:16:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-06 21:16:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-06 21:16:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-06 21:16:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-06 21:16:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-06 21:16:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-06 21:16:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-06 21:16:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-06 21:16:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-06 21:16:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-06 21:16:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-06 21:16:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-06 21:16:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-06 21:16:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-06 21:16:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-06 21:16:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-06 21:16:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-06 21:16:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-06 21:16:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-06 21:16:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-06 21:16:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-06 21:16:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-06 21:16:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-06 21:16:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-06 21:16:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-06 21:16:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-06 21:16:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-06 21:16:02,714 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-06 21:16:02,714 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-06 21:16:02,714 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-06 21:16:02,714 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-06 21:16:02,714 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-06 21:16:02,714 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-06 21:16:02,715 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-06 21:16:02,715 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-06 21:16:02,715 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-06 21:16:02,715 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-06 21:16:02,715 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-06 21:16:02,715 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-06 21:16:02,715 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-06 21:16:02,716 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-06 21:16:02,716 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-06 21:16:02,716 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-06 21:16:02,716 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-06 21:16:02,716 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-06 21:16:02,716 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-06 21:16:02,716 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-06 21:16:02,717 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-06 21:16:02,717 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:16:02,717 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-06 21:16:02,717 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-06 21:16:02,717 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:16:02,717 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-06 21:16:02,718 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-06 21:16:02,718 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-06 21:16:02,718 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-06 21:16:02,718 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-06 21:16:02,718 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-06 21:16:02,718 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-06 21:16:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-06 21:16:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-06 21:16:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 21:16:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-06 21:16:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-06 21:16:02,719 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-06 21:16:02,720 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-06 21:16:02,720 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-06 21:16:02,720 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-06 21:16:02,720 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-06 21:16:02,720 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-06 21:16:02,720 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-06 21:16:02,720 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-06 21:16:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-06 21:16:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-06 21:16:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-06 21:16:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-06 21:16:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-06 21:16:02,721 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-06 21:16:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-06 21:16:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-06 21:16:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-06 21:16:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-06 21:16:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-06 21:16:02,722 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-06 21:16:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-06 21:16:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-06 21:16:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-06 21:16:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-06 21:16:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-06 21:16:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-06 21:16:02,723 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-06 21:16:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-06 21:16:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-06 21:16:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-06 21:16:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-06 21:16:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-06 21:16:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-06 21:16:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-06 21:16:02,724 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-06 21:16:02,725 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-06 21:16:02,725 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-06 21:16:02,725 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-06 21:16:02,725 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-06 21:16:02,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:16:02,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:16:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:16:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2019-11-06 21:16:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2019-11-06 21:16:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:16:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:16:02,726 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_insert [2019-11-06 21:16:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:16:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:16:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-06 21:16:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:16:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:16:02,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:16:03,211 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-06 21:16:03,464 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:16:03,464 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 21:16:03,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:16:03 BoogieIcfgContainer [2019-11-06 21:16:03,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:16:03,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:16:03,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:16:03,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:16:03,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:16:01" (1/3) ... [2019-11-06 21:16:03,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d76836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:16:03, skipping insertion in model container [2019-11-06 21:16:03,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:16:02" (2/3) ... [2019-11-06 21:16:03,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d76836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:16:03, skipping insertion in model container [2019-11-06 21:16:03,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:16:03" (3/3) ... [2019-11-06 21:16:03,474 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_insert_unequal.i [2019-11-06 21:16:03,484 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:16:03,496 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:16:03,508 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:16:03,529 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:16:03,529 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:16:03,530 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:16:03,530 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:16:03,530 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:16:03,530 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:16:03,531 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:16:03,531 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:16:03,550 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2019-11-06 21:16:03,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-06 21:16:03,558 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:16:03,560 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, 1, 1] [2019-11-06 21:16:03,562 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:16:03,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:16:03,567 INFO L82 PathProgramCache]: Analyzing trace with hash -641955206, now seen corresponding path program 1 times [2019-11-06 21:16:03,574 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:16:03,574 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526061115] [2019-11-06 21:16:03,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:16:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:03,993 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 21:16:03,996 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526061115] [2019-11-06 21:16:03,997 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:16:03,997 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 21:16:04,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954329433] [2019-11-06 21:16:04,007 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:16:04,008 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:16:04,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:16:04,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:16:04,026 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 4 states. [2019-11-06 21:16:04,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:16:04,317 INFO L93 Difference]: Finished difference Result 115 states and 154 transitions. [2019-11-06 21:16:04,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 21:16:04,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2019-11-06 21:16:04,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:16:04,332 INFO L225 Difference]: With dead ends: 115 [2019-11-06 21:16:04,332 INFO L226 Difference]: Without dead ends: 48 [2019-11-06 21:16:04,337 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 21:16:04,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-11-06 21:16:04,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2019-11-06 21:16:04,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-06 21:16:04,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2019-11-06 21:16:04,389 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 37 [2019-11-06 21:16:04,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:16:04,391 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2019-11-06 21:16:04,391 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:16:04,391 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2019-11-06 21:16:04,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-06 21:16:04,394 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:16:04,394 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, 1, 1] [2019-11-06 21:16:04,394 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:16:04,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:16:04,395 INFO L82 PathProgramCache]: Analyzing trace with hash 82972775, now seen corresponding path program 1 times [2019-11-06 21:16:04,395 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:16:04,395 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458157008] [2019-11-06 21:16:04,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:16:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:04,594 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 21:16:04,594 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458157008] [2019-11-06 21:16:04,594 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:16:04,595 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:16:04,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980037553] [2019-11-06 21:16:04,599 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:16:04,600 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:16:04,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:16:04,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:16:04,600 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand 5 states. [2019-11-06 21:16:04,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:16:04,807 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-11-06 21:16:04,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:16:04,808 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2019-11-06 21:16:04,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:16:04,811 INFO L225 Difference]: With dead ends: 68 [2019-11-06 21:16:04,812 INFO L226 Difference]: Without dead ends: 52 [2019-11-06 21:16:04,813 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 21:16:04,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-06 21:16:04,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2019-11-06 21:16:04,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-06 21:16:04,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2019-11-06 21:16:04,823 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 37 [2019-11-06 21:16:04,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:16:04,824 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2019-11-06 21:16:04,824 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:16:04,824 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2019-11-06 21:16:04,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-06 21:16:04,826 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:16:04,826 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, 1, 1, 1] [2019-11-06 21:16:04,826 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:16:04,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:16:04,827 INFO L82 PathProgramCache]: Analyzing trace with hash 101153926, now seen corresponding path program 1 times [2019-11-06 21:16:04,827 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:16:04,827 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822058938] [2019-11-06 21:16:04,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:16:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:04,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-06 21:16:04,978 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822058938] [2019-11-06 21:16:04,978 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:16:04,978 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 21:16:04,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646422226] [2019-11-06 21:16:04,979 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:16:04,979 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:16:04,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:16:04,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:16:04,980 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand 7 states. [2019-11-06 21:16:05,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:16:05,287 INFO L93 Difference]: Finished difference Result 90 states and 113 transitions. [2019-11-06 21:16:05,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 21:16:05,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2019-11-06 21:16:05,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:16:05,292 INFO L225 Difference]: With dead ends: 90 [2019-11-06 21:16:05,293 INFO L226 Difference]: Without dead ends: 55 [2019-11-06 21:16:05,293 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:16:05,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-06 21:16:05,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2019-11-06 21:16:05,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-06 21:16:05,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2019-11-06 21:16:05,302 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 38 [2019-11-06 21:16:05,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:16:05,303 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2019-11-06 21:16:05,303 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:16:05,303 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2019-11-06 21:16:05,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-11-06 21:16:05,305 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:16:05,305 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, 1, 1] [2019-11-06 21:16:05,305 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:16:05,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:16:05,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1254454618, now seen corresponding path program 1 times [2019-11-06 21:16:05,306 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:16:05,306 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695311455] [2019-11-06 21:16:05,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:16:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:16:05,858 ERROR L253 erpolLogProxyWrapper]: Interpolant 4 not inductive [2019-11-06 21:16:05,880 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:221) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:863) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:385) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:332) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:193) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:305) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:356) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:239) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:83) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-06 21:16:05,891 INFO L168 Benchmark]: Toolchain (without parser) took 4082.17 ms. Allocated memory was 137.9 MB in the beginning and 248.5 MB in the end (delta: 110.6 MB). Free memory was 99.8 MB in the beginning and 144.4 MB in the end (delta: -44.7 MB). Peak memory consumption was 66.0 MB. Max. memory is 7.1 GB. [2019-11-06 21:16:05,893 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 119.9 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 21:16:05,896 INFO L168 Benchmark]: CACSL2BoogieTranslator took 763.90 ms. Allocated memory was 137.9 MB in the beginning and 203.9 MB in the end (delta: 66.1 MB). Free memory was 99.5 MB in the beginning and 167.7 MB in the end (delta: -68.2 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2019-11-06 21:16:05,899 INFO L168 Benchmark]: Boogie Preprocessor took 71.41 ms. Allocated memory is still 203.9 MB. Free memory was 167.7 MB in the beginning and 164.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2019-11-06 21:16:05,901 INFO L168 Benchmark]: RCFGBuilder took 824.14 ms. Allocated memory is still 203.9 MB. Free memory was 164.4 MB in the beginning and 107.0 MB in the end (delta: 57.4 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. [2019-11-06 21:16:05,904 INFO L168 Benchmark]: TraceAbstraction took 2418.51 ms. Allocated memory was 203.9 MB in the beginning and 248.5 MB in the end (delta: 44.6 MB). Free memory was 107.0 MB in the beginning and 144.4 MB in the end (delta: -37.4 MB). Peak memory consumption was 7.2 MB. Max. memory is 7.1 GB. [2019-11-06 21:16:05,913 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 119.9 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 763.90 ms. Allocated memory was 137.9 MB in the beginning and 203.9 MB in the end (delta: 66.1 MB). Free memory was 99.5 MB in the beginning and 167.7 MB in the end (delta: -68.2 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.41 ms. Allocated memory is still 203.9 MB. Free memory was 167.7 MB in the beginning and 164.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 824.14 ms. Allocated memory is still 203.9 MB. Free memory was 164.4 MB in the beginning and 107.0 MB in the end (delta: 57.4 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2418.51 ms. Allocated memory was 203.9 MB in the beginning and 248.5 MB in the end (delta: 44.6 MB). Free memory was 107.0 MB in the beginning and 144.4 MB in the end (delta: -37.4 MB). Peak memory consumption was 7.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:221) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...