/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/heap-manipulation/dll_of_dll-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:39:00,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:39:00,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:39:00,492 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:39:00,492 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:39:00,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:39:00,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:39:00,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:39:00,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:39:00,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:39:00,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:39:00,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:39:00,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:39:00,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:39:00,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:39:00,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:39:00,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:39:00,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:39:00,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:39:00,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:39:00,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:39:00,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:39:00,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:39:00,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:39:00,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 16:39:00,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 16:39:00,549 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 16:39:00,550 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 16:39:00,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 16:39:00,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 16:39:00,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 16:39:00,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 16:39:00,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 16:39:00,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 16:39:00,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 16:39:00,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 16:39:00,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 16:39:00,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 16:39:00,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:39:00,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:39:00,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:39:00,562 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 [2020-08-22 16:39:00,600 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:39:00,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:39:00,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:39:00,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:39:00,602 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:39:00,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:39:00,602 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:39:00,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:39:00,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:39:00,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:39:00,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:39:00,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:39:00,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:39:00,605 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:39:00,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:39:00,605 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:39:00,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:39:00,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:39:00,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:39:00,606 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:39:00,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:39:00,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:39:00,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:39:00,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:39:00,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:39:00,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:39:00,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:39:00,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:39:00,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:39:00,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:39:00,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:39:00,920 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:39:00,923 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:39:00,925 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:39:00,925 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:39:00,926 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-22 16:39:00,988 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bddd9e5d/a53a765ee70743e9859fe6bb48be4b88/FLAGba2d6989b [2020-08-22 16:39:01,507 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:39:01,507 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-22 16:39:01,532 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bddd9e5d/a53a765ee70743e9859fe6bb48be4b88/FLAGba2d6989b [2020-08-22 16:39:01,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bddd9e5d/a53a765ee70743e9859fe6bb48be4b88 [2020-08-22 16:39:01,770 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:39:01,772 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:39:01,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:39:01,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:39:01,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:39:01,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:39:01" (1/1) ... [2020-08-22 16:39:01,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22559c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:39:01, skipping insertion in model container [2020-08-22 16:39:01,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:39:01" (1/1) ... [2020-08-22 16:39:01,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:39:01,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:39:02,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:39:02,357 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:39:02,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:39:02,489 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:39:02,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:39:02 WrapperNode [2020-08-22 16:39:02,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:39:02,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:39:02,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:39:02,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:39:02,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:39:02" (1/1) ... [2020-08-22 16:39:02,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:39:02" (1/1) ... [2020-08-22 16:39:02,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:39:02" (1/1) ... [2020-08-22 16:39:02,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:39:02" (1/1) ... [2020-08-22 16:39:02,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:39:02" (1/1) ... [2020-08-22 16:39:02,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:39:02" (1/1) ... [2020-08-22 16:39:02,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:39:02" (1/1) ... [2020-08-22 16:39:02,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:39:02,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:39:02,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:39:02,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:39:02,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:39:02" (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 [2020-08-22 16:39:02,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:39:02,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:39:02,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 16:39:02,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-22 16:39:02,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-22 16:39:02,650 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-22 16:39:02,650 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-22 16:39:02,650 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-22 16:39:02,650 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-22 16:39:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-22 16:39:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-22 16:39:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-22 16:39:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-22 16:39:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-22 16:39:02,651 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-22 16:39:02,652 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-22 16:39:02,652 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-22 16:39:02,652 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-22 16:39:02,652 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-22 16:39:02,652 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-22 16:39:02,652 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-22 16:39:02,653 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:39:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:39:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 16:39:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 16:39:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 16:39:02,653 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 16:39:02,654 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 16:39:02,654 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 16:39:02,654 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 16:39:02,654 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 16:39:02,654 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 16:39:02,654 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 16:39:02,655 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 16:39:02,655 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 16:39:02,655 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 16:39:02,655 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 16:39:02,655 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 16:39:02,655 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 16:39:02,656 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-22 16:39:02,656 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-22 16:39:02,656 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 16:39:02,656 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 16:39:02,656 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 16:39:02,656 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 16:39:02,656 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 16:39:02,657 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 16:39:02,657 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 16:39:02,657 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 16:39:02,657 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 16:39:02,657 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 16:39:02,657 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 16:39:02,657 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 16:39:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 16:39:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 16:39:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 16:39:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 16:39:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 16:39:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 16:39:02,658 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 16:39:02,659 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 16:39:02,659 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 16:39:02,659 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 16:39:02,659 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 16:39:02,659 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 16:39:02,659 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 16:39:02,659 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 16:39:02,660 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 16:39:02,660 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 16:39:02,660 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 16:39:02,660 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 16:39:02,660 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 16:39:02,660 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 16:39:02,661 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 16:39:02,661 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 16:39:02,661 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 16:39:02,661 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 16:39:02,661 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 16:39:02,661 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 16:39:02,661 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 16:39:02,662 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 16:39:02,662 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 16:39:02,662 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 16:39:02,662 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 16:39:02,662 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:39:02,662 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 16:39:02,663 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 16:39:02,663 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 16:39:02,663 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 16:39:02,663 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 16:39:02,663 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 16:39:02,663 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 16:39:02,663 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 16:39:02,664 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 16:39:02,664 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 16:39:02,664 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 16:39:02,664 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 16:39:02,664 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 16:39:02,664 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 16:39:02,664 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 16:39:02,665 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 16:39:02,665 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 16:39:02,665 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 16:39:02,665 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 16:39:02,665 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 16:39:02,665 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 16:39:02,665 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 16:39:02,666 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 16:39:02,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 16:39:02,666 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 16:39:02,666 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 16:39:02,666 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 16:39:02,666 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 16:39:02,666 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 16:39:02,667 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 16:39:02,667 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 16:39:02,667 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 16:39:02,667 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 16:39:02,667 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 16:39:02,667 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 16:39:02,667 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 16:39:02,668 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 16:39:02,668 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 16:39:02,668 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 16:39:02,668 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 16:39:02,668 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 16:39:02,668 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 16:39:02,668 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 16:39:02,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:39:02,669 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-22 16:39:02,669 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-22 16:39:02,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 16:39:02,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 16:39:02,669 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-22 16:39:02,669 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-22 16:39:02,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 16:39:02,670 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-22 16:39:02,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 16:39:02,670 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 16:39:02,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 16:39:02,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:39:02,671 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-22 16:39:02,671 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-22 16:39:02,671 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-22 16:39:02,671 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-22 16:39:02,671 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-22 16:39:02,671 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-22 16:39:02,671 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-22 16:39:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-22 16:39:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-22 16:39:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-22 16:39:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-22 16:39:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:39:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:39:02,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:39:03,445 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:39:03,445 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-22 16:39:03,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:39:03 BoogieIcfgContainer [2020-08-22 16:39:03,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:39:03,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:39:03,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:39:03,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:39:03,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:39:01" (1/3) ... [2020-08-22 16:39:03,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d86c67f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:39:03, skipping insertion in model container [2020-08-22 16:39:03,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:39:02" (2/3) ... [2020-08-22 16:39:03,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d86c67f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:39:03, skipping insertion in model container [2020-08-22 16:39:03,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:39:03" (3/3) ... [2020-08-22 16:39:03,467 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-08-22 16:39:03,477 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:39:03,486 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:39:03,496 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:39:03,516 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:39:03,517 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:39:03,517 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:39:03,517 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:39:03,517 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:39:03,517 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:39:03,518 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:39:03,518 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:39:03,540 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-22 16:39:03,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 16:39:03,548 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:39:03,550 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:39:03,550 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:39:03,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:39:03,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-22 16:39:03,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:39:03,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436315042] [2020-08-22 16:39:03,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:39:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:03,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:39:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:03,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:39:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:03,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:39:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:03,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:39:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:03,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:39:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:03,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:39:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:03,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 16:39:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:03,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:39:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:04,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:39:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:04,034 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-22 16:39:04,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436315042] [2020-08-22 16:39:04,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:39:04,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:39:04,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495265706] [2020-08-22 16:39:04,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:39:04,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:39:04,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:39:04,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:39:04,063 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-22 16:39:04,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:39:04,485 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-22 16:39:04,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:39:04,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-22 16:39:04,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:39:04,501 INFO L225 Difference]: With dead ends: 343 [2020-08-22 16:39:04,501 INFO L226 Difference]: Without dead ends: 166 [2020-08-22 16:39:04,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:39:04,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-22 16:39:04,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-22 16:39:04,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-22 16:39:04,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-22 16:39:04,578 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-22 16:39:04,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:39:04,578 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-22 16:39:04,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:39:04,579 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-22 16:39:04,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 16:39:04,584 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:39:04,585 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:39:04,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:39:04,585 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:39:04,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:39:04,586 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-22 16:39:04,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:39:04,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006952706] [2020-08-22 16:39:04,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:39:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:04,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:39:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:04,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:39:04,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:04,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:39:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:04,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:39:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:04,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:39:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:04,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:39:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:04,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 16:39:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:04,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:39:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:04,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:39:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:05,021 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-22 16:39:05,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006952706] [2020-08-22 16:39:05,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236987285] [2020-08-22 16:39:05,022 INFO L95 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 [2020-08-22 16:39:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:05,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 13 conjunts are in the unsatisfiable core [2020-08-22 16:39:05,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:39:05,312 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-22 16:39:05,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:39:05,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5] total 13 [2020-08-22 16:39:05,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486740214] [2020-08-22 16:39:05,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 16:39:05,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:39:05,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 16:39:05,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-22 16:39:05,316 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-22 16:39:06,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:39:06,458 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-22 16:39:06,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 16:39:06,459 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-22 16:39:06,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:39:06,462 INFO L225 Difference]: With dead ends: 327 [2020-08-22 16:39:06,462 INFO L226 Difference]: Without dead ends: 179 [2020-08-22 16:39:06,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-08-22 16:39:06,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-22 16:39:06,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-22 16:39:06,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-22 16:39:06,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-22 16:39:06,486 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-22 16:39:06,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:39:06,486 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-22 16:39:06,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 16:39:06,487 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-22 16:39:06,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 16:39:06,490 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:39:06,490 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:39:06,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-08-22 16:39:06,705 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:39:06,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:39:06,706 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-22 16:39:06,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:39:06,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137582563] [2020-08-22 16:39:06,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:39:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:06,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:39:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:06,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:39:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:07,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:39:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:07,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:39:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:07,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:39:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:07,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:39:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:07,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 16:39:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:07,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:39:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:07,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:39:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:07,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:39:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:07,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:39:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:07,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 16:39:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:07,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:39:07,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:07,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:39:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:08,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 16:39:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:08,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:39:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:08,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:39:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:08,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 16:39:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:08,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:39:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:08,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:39:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:08,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:39:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:08,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:39:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:08,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 16:39:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:08,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:39:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:08,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:39:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:08,369 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 16 proven. 93 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-22 16:39:08,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137582563] [2020-08-22 16:39:08,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480961569] [2020-08-22 16:39:08,370 INFO L95 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 [2020-08-22 16:39:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:39:08,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 58 conjunts are in the unsatisfiable core [2020-08-22 16:39:08,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:39:08,749 INFO L384 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 [2020-08-22 16:39:08,750 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:39:08,757 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:39:08,758 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:39:08,758 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:8 [2020-08-22 16:39:08,775 INFO L384 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 [2020-08-22 16:39:08,776 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:39:08,780 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:39:08,781 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:39:08,782 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:3 [2020-08-22 16:39:10,875 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_slave_~ptr~0.offset Int) (alloc_or_die_slave_~ptr~0.base Int)) (and (<= (+ alloc_or_die_slave_~ptr~0.base 1) |c_#StackHeapBarrier|) (= (store |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base (store (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base) alloc_or_die_slave_~ptr~0.offset 0) (+ alloc_or_die_slave_~ptr~0.offset 4) 0)) |c_#memory_$Pointer$.base|))) is different from true [2020-08-22 16:39:24,696 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 25 [2020-08-22 16:39:26,732 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_slave_~ptr~0.offset Int) (alloc_or_die_slave_~ptr~0.base Int)) (and (<= (+ alloc_or_die_slave_~ptr~0.base 1) |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base (store (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base) alloc_or_die_slave_~ptr~0.offset 0) (+ alloc_or_die_slave_~ptr~0.offset 4) 0)) |c_dll_insert_slave_#in~dll.base|) |c_dll_insert_slave_#in~dll.offset|) c_dll_insert_slave_~next~0.base))) is different from true [2020-08-22 16:39:28,757 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_slave_~ptr~0.offset Int) (alloc_or_die_slave_~ptr~0.base Int)) (and (<= (+ alloc_or_die_slave_~ptr~0.base 1) |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base (store (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base) alloc_or_die_slave_~ptr~0.offset 0) (+ alloc_or_die_slave_~ptr~0.offset 4) 0)) |c_dll_insert_slave_#in~dll.base|) |c_dll_insert_slave_#in~dll.offset|) 0))) is different from true [2020-08-22 16:39:30,774 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_slave_~ptr~0.offset Int) (alloc_or_die_slave_~ptr~0.base Int)) (and (<= (+ alloc_or_die_slave_~ptr~0.base 1) |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base (store (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base) alloc_or_die_slave_~ptr~0.offset 0) (+ alloc_or_die_slave_~ptr~0.offset 4) 0)) |c_##fun~$Pointer$~TO~VOID_#in~9.base|) |c_##fun~$Pointer$~TO~VOID_#in~9.offset|) 0))) is different from true [2020-08-22 16:39:30,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:39:30,814 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:39:30,819 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:39:30,819 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:39:30,819 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:39, output treesize:1 [2020-08-22 16:39:30,859 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 108 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 8 not checked. [2020-08-22 16:39:30,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:39:30,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22] total 36 [2020-08-22 16:39:30,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171931413] [2020-08-22 16:39:30,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-08-22 16:39:30,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:39:30,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-08-22 16:39:30,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=907, Unknown=10, NotChecked=252, Total=1260 [2020-08-22 16:39:30,863 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 36 states. [2020-08-22 16:39:38,192 WARN L193 SmtUtils]: Spent 4.04 s on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2020-08-22 16:39:40,288 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 28 [2020-08-22 16:39:44,369 WARN L193 SmtUtils]: Spent 4.02 s on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2020-08-22 16:39:50,173 WARN L193 SmtUtils]: Spent 3.73 s on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-08-22 16:39:58,219 WARN L193 SmtUtils]: Spent 3.92 s on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-08-22 16:40:04,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:40:04,919 INFO L93 Difference]: Finished difference Result 348 states and 425 transitions. [2020-08-22 16:40:04,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 16:40:04,919 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 154 [2020-08-22 16:40:04,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:40:04,922 INFO L225 Difference]: With dead ends: 348 [2020-08-22 16:40:04,922 INFO L226 Difference]: Without dead ends: 189 [2020-08-22 16:40:04,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 191 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 51.5s TimeCoverageRelationStatistics Valid=230, Invalid=2220, Unknown=16, NotChecked=396, Total=2862 [2020-08-22 16:40:04,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-22 16:40:04,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 176. [2020-08-22 16:40:04,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-22 16:40:04,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 208 transitions. [2020-08-22 16:40:04,964 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 208 transitions. Word has length 154 [2020-08-22 16:40:04,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:40:04,965 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 208 transitions. [2020-08-22 16:40:04,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-08-22 16:40:04,965 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 208 transitions. [2020-08-22 16:40:04,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-22 16:40:04,972 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:40:04,973 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:40:05,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:40:05,188 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:40:05,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:40:05,188 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-22 16:40:05,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:40:05,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208888182] [2020-08-22 16:40:05,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:40:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:05,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:40:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:05,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:40:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:05,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:40:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:05,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:40:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:05,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:40:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:06,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:40:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:06,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 16:40:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:06,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:40:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:06,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:40:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:06,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:40:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:06,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:40:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:06,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 16:40:06,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:06,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:40:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:06,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:40:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:06,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 16:40:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:06,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:40:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:06,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:40:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:06,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 16:40:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:06,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:40:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:06,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:40:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:06,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:40:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:06,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:40:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:06,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 16:40:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:06,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:40:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:06,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:40:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:06,479 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-08-22 16:40:06,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208888182] [2020-08-22 16:40:06,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650933644] [2020-08-22 16:40:06,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:40:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:06,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 48 conjunts are in the unsatisfiable core [2020-08-22 16:40:06,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:40:07,010 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:40:07,011 INFO L384 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 1 case distinctions, treesize of input 31 treesize of output 47 [2020-08-22 16:40:07,012 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:40:07,039 INFO L625 ElimStorePlain]: treesize reduction 20, result has 60.8 percent of original size [2020-08-22 16:40:07,041 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:40:07,042 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:8 [2020-08-22 16:40:07,139 INFO L384 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 16 treesize of output 8 [2020-08-22 16:40:07,140 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:40:07,141 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:40:07,141 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:40:07,142 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:4 [2020-08-22 16:40:07,273 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-08-22 16:40:07,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:40:07,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 32 [2020-08-22 16:40:07,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227880990] [2020-08-22 16:40:07,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-08-22 16:40:07,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:40:07,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-08-22 16:40:07,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=922, Unknown=0, NotChecked=0, Total=992 [2020-08-22 16:40:07,276 INFO L87 Difference]: Start difference. First operand 176 states and 208 transitions. Second operand 32 states. [2020-08-22 16:40:11,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:40:11,293 INFO L93 Difference]: Finished difference Result 428 states and 516 transitions. [2020-08-22 16:40:11,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-22 16:40:11,294 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 154 [2020-08-22 16:40:11,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:40:11,299 INFO L225 Difference]: With dead ends: 428 [2020-08-22 16:40:11,299 INFO L226 Difference]: Without dead ends: 256 [2020-08-22 16:40:11,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2020-08-22 16:40:11,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-08-22 16:40:11,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 213. [2020-08-22 16:40:11,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-08-22 16:40:11,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 252 transitions. [2020-08-22 16:40:11,325 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 252 transitions. Word has length 154 [2020-08-22 16:40:11,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:40:11,325 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 252 transitions. [2020-08-22 16:40:11,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-08-22 16:40:11,326 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 252 transitions. [2020-08-22 16:40:11,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-22 16:40:11,328 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:40:11,328 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:40:11,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:40:11,544 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:40:11,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:40:11,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-22 16:40:11,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:40:11,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414017180] [2020-08-22 16:40:11,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:40:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:11,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:40:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:12,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 16:40:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:12,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:40:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:12,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:40:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:12,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:40:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:12,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:40:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:12,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 16:40:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:13,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:40:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:13,943 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 24 [2020-08-22 16:40:14,774 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 20 [2020-08-22 16:40:15,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:40:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:15,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:40:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:15,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:40:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:15,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 16:40:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:15,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:40:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:15,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:40:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:15,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 16:40:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:16,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:40:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:16,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:40:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:17,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 16:40:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:17,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:40:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:40:46,381 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 449 DAG size of output: 50