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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_length_check-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 02:28:47,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:28:47,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:28:47,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-03 02:28:47,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-03 02:28:47,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-03 02:28:47,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-03 02:28:47,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-03 02:28:47,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-03 02:28:47,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-03 02:28:47,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-03 02:28:47,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-03 02:28:47,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-03 02:28:47,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-03 02:28:47,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-03 02:28:47,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-03 02:28:47,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-03 02:28:47,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-03 02:28:47,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-03 02:28:47,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-03 02:28:47,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-03 02:28:47,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-03 02:28:47,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-03 02:28:47,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-03 02:28:47,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-03 02:28:47,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-03 02:28:47,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-03 02:28:47,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-03 02:28:47,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-03 02:28:47,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-03 02:28:47,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-03 02:28:47,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-03 02:28:47,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-03 02:28:47,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-03 02:28:47,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-03 02:28:47,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-03 02:28:47,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-03 02:28:47,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-03 02:28:47,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 02:28:47,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 02:28:47,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 02:28:47,623 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-10-03 02:28:47,639 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:28:47,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:28:47,640 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:28:47,640 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:28:47,641 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:28:47,642 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:28:47,642 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:28:47,642 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:28:47,642 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:28:47,642 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:28:47,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:28:47,644 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:28:47,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:28:47,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:28:47,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:28:47,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:28:47,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:28:47,645 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:28:47,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:28:47,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:28:47,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:28:47,646 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:28:47,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:28:47,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:28:47,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:28:47,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:28:47,647 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:28:47,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:28:47,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:28:47,648 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:28:47,685 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:28:47,700 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:28:47,704 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:28:47,706 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:28:47,707 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:28:47,708 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_length_check-2.i [2019-10-03 02:28:47,787 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/871be87b9/c8753d57f2114bb283559adc0932d5e3/FLAG8d577ff1a [2019-10-03 02:28:48,444 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:28:48,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_length_check-2.i [2019-10-03 02:28:48,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/871be87b9/c8753d57f2114bb283559adc0932d5e3/FLAG8d577ff1a [2019-10-03 02:28:48,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/871be87b9/c8753d57f2114bb283559adc0932d5e3 [2019-10-03 02:28:48,638 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:28:48,639 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:28:48,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:28:48,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:28:48,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:28:48,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:28:48" (1/1) ... [2019-10-03 02:28:48,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6912290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:28:48, skipping insertion in model container [2019-10-03 02:28:48,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:28:48" (1/1) ... [2019-10-03 02:28:48,658 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:28:48,703 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:28:49,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:28:49,307 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:28:49,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:28:49,427 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:28:49,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:28:49 WrapperNode [2019-10-03 02:28:49,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:28:49,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:28:49,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:28:49,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:28:49,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:28:49" (1/1) ... [2019-10-03 02:28:49,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:28:49" (1/1) ... [2019-10-03 02:28:49,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:28:49" (1/1) ... [2019-10-03 02:28:49,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:28:49" (1/1) ... [2019-10-03 02:28:49,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:28:49" (1/1) ... [2019-10-03 02:28:49,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:28:49" (1/1) ... [2019-10-03 02:28:49,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:28:49" (1/1) ... [2019-10-03 02:28:49,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:28:49,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:28:49,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:28:49,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:28:49,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:28:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:28:49,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:28:49,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:28:49,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-03 02:28:49,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-03 02:28:49,609 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-03 02:28:49,609 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-10-03 02:28:49,609 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2019-10-03 02:28:49,610 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-10-03 02:28:49,610 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:28:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:28:49,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-03 02:28:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-03 02:28:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-03 02:28:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-03 02:28:49,612 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-03 02:28:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-03 02:28:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-03 02:28:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-03 02:28:49,614 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-03 02:28:49,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-03 02:28:49,616 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-03 02:28:49,616 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-03 02:28:49,616 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-03 02:28:49,616 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-03 02:28:49,617 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-03 02:28:49,618 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-03 02:28:49,618 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-03 02:28:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-03 02:28:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-03 02:28:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-03 02:28:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-03 02:28:49,619 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-03 02:28:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-03 02:28:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-03 02:28:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-03 02:28:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-03 02:28:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-03 02:28:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-03 02:28:49,620 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-03 02:28:49,621 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-03 02:28:49,621 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-03 02:28:49,621 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-03 02:28:49,622 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-03 02:28:49,622 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-03 02:28:49,622 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-03 02:28:49,622 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-03 02:28:49,623 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-03 02:28:49,623 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-03 02:28:49,623 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-03 02:28:49,623 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-03 02:28:49,623 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-03 02:28:49,623 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-03 02:28:49,624 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-03 02:28:49,624 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-03 02:28:49,624 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-03 02:28:49,624 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-03 02:28:49,624 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-03 02:28:49,624 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-03 02:28:49,624 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-03 02:28:49,625 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-03 02:28:49,625 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-03 02:28:49,625 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-03 02:28:49,625 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-03 02:28:49,625 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-03 02:28:49,625 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-03 02:28:49,626 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-03 02:28:49,626 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-03 02:28:49,627 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-03 02:28:49,628 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-03 02:28:49,628 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-03 02:28:49,628 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-03 02:28:49,628 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-03 02:28:49,628 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-03 02:28:49,629 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-03 02:28:49,630 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-03 02:28:49,630 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-03 02:28:49,630 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-03 02:28:49,630 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-03 02:28:49,630 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-03 02:28:49,631 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-03 02:28:49,632 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-03 02:28:49,632 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-03 02:28:49,632 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-03 02:28:49,632 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-03 02:28:49,632 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-03 02:28:49,634 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-03 02:28:49,634 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-03 02:28:49,634 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-03 02:28:49,635 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-03 02:28:49,635 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-03 02:28:49,636 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-03 02:28:49,636 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-03 02:28:49,636 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-03 02:28:49,636 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-03 02:28:49,636 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-03 02:28:49,636 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-03 02:28:49,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-03 02:28:49,637 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-03 02:28:49,637 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-03 02:28:49,637 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-03 02:28:49,637 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-03 02:28:49,637 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-03 02:28:49,637 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-03 02:28:49,637 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-03 02:28:49,638 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-03 02:28:49,638 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-03 02:28:49,638 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-03 02:28:49,638 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-03 02:28:49,638 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-03 02:28:49,638 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-03 02:28:49,639 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-03 02:28:49,639 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-03 02:28:49,639 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-03 02:28:49,639 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-03 02:28:49,639 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-03 02:28:49,639 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-03 02:28:49,639 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-03 02:28:49,641 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-10-03 02:28:49,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-03 02:28:49,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-03 02:28:49,642 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2019-10-03 02:28:49,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-03 02:28:49,642 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-10-03 02:28:49,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-03 02:28:49,642 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:28:49,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:28:49,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:28:50,046 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-03 02:28:50,254 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:28:50,255 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-03 02:28:50,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:28:50 BoogieIcfgContainer [2019-10-03 02:28:50,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:28:50,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:28:50,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:28:50,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:28:50,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:28:48" (1/3) ... [2019-10-03 02:28:50,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d082881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:28:50, skipping insertion in model container [2019-10-03 02:28:50,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:28:49" (2/3) ... [2019-10-03 02:28:50,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d082881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:28:50, skipping insertion in model container [2019-10-03 02:28:50,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:28:50" (3/3) ... [2019-10-03 02:28:50,267 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_length_check-2.i [2019-10-03 02:28:50,280 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:28:50,290 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:28:50,312 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:28:50,346 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:28:50,346 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:28:50,346 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:28:50,346 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:28:50,347 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:28:50,347 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:28:50,347 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:28:50,347 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:28:50,365 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2019-10-03 02:28:50,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-03 02:28:50,379 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:28:50,380 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:28:50,383 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:28:50,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:28:50,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1666427650, now seen corresponding path program 1 times [2019-10-03 02:28:50,393 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:28:50,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:28:50,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:28:50,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:28:50,471 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:28:50,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:28:50,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:28:50,583 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:28:50,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-03 02:28:50,584 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:28:50,592 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:28:50,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:28:50,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:28:50,618 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2019-10-03 02:28:50,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:28:50,653 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2019-10-03 02:28:50,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:28:50,655 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2019-10-03 02:28:50,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:28:50,674 INFO L225 Difference]: With dead ends: 41 [2019-10-03 02:28:50,674 INFO L226 Difference]: Without dead ends: 28 [2019-10-03 02:28:50,679 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:28:50,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-03 02:28:50,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-10-03 02:28:50,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-03 02:28:50,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2019-10-03 02:28:50,753 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2019-10-03 02:28:50,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:28:50,754 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2019-10-03 02:28:50,754 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:28:50,754 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2019-10-03 02:28:50,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-03 02:28:50,756 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:28:50,757 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:28:50,757 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:28:50,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:28:50,760 INFO L82 PathProgramCache]: Analyzing trace with hash -29727073, now seen corresponding path program 1 times [2019-10-03 02:28:50,760 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:28:50,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:28:50,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:28:50,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:28:50,772 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:28:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:28:50,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:28:50,949 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:28:50,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-03 02:28:50,949 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:28:50,951 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-03 02:28:50,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-03 02:28:50,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-03 02:28:50,953 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2019-10-03 02:28:51,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:28:51,040 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2019-10-03 02:28:51,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-03 02:28:51,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-03 02:28:51,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:28:51,043 INFO L225 Difference]: With dead ends: 34 [2019-10-03 02:28:51,043 INFO L226 Difference]: Without dead ends: 31 [2019-10-03 02:28:51,045 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-03 02:28:51,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-03 02:28:51,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2019-10-03 02:28:51,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-03 02:28:51,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2019-10-03 02:28:51,052 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 25 [2019-10-03 02:28:51,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:28:51,052 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2019-10-03 02:28:51,053 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-03 02:28:51,053 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2019-10-03 02:28:51,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-03 02:28:51,054 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:28:51,055 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:28:51,055 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:28:51,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:28:51,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1680455870, now seen corresponding path program 1 times [2019-10-03 02:28:51,056 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:28:51,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:28:51,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:28:51,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:28:51,062 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:28:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:28:51,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:28:51,293 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:28:51,293 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-03 02:28:51,293 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:28:51,293 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-03 02:28:51,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-03 02:28:51,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-03 02:28:51,295 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 9 states. [2019-10-03 02:28:51,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:28:51,468 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2019-10-03 02:28:51,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-03 02:28:51,468 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2019-10-03 02:28:51,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:28:51,470 INFO L225 Difference]: With dead ends: 35 [2019-10-03 02:28:51,470 INFO L226 Difference]: Without dead ends: 32 [2019-10-03 02:28:51,471 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-10-03 02:28:51,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-10-03 02:28:51,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-10-03 02:28:51,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-03 02:28:51,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-10-03 02:28:51,477 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 28 [2019-10-03 02:28:51,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:28:51,478 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-10-03 02:28:51,478 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-03 02:28:51,478 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-10-03 02:28:51,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-03 02:28:51,481 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:28:51,482 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:28:51,484 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:28:51,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:28:51,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1808388506, now seen corresponding path program 1 times [2019-10-03 02:28:51,485 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:28:51,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:28:51,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:28:51,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:28:51,496 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:28:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:28:51,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-03 02:28:51,631 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 02:28:51,631 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 02:28:51,633 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 30 with the following transitions: [2019-10-03 02:28:51,635 INFO L207 CegarAbsIntRunner]: [21], [28], [30], [34], [35], [36], [43], [45], [51], [53], [57], [58], [59], [60], [61], [66], [69], [75], [82], [84], [87], [92], [102], [103], [104], [105], [108], [109], [110] [2019-10-03 02:28:51,696 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 02:28:51,696 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 02:28:51,836 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-03 02:28:51,839 INFO L272 AbstractInterpreter]: Visited 13 different actions 13 times. Never merged. Never widened. Performed 36 root evaluator evaluations with a maximum evaluation depth of 4. Performed 36 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Never found a fixpoint. Largest state had 25 variables. [2019-10-03 02:28:51,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:28:51,844 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-03 02:28:51,896 INFO L227 lantSequenceWeakener]: Weakened 11 states. On average, predicates are now at 84.39% of their original sizes. [2019-10-03 02:28:51,896 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-03 02:28:51,923 INFO L420 sIntCurrentIteration]: We unified 28 AI predicates to 28 [2019-10-03 02:28:51,924 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-03 02:28:51,925 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-03 02:28:51,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-10-03 02:28:51,926 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:28:51,926 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-03 02:28:51,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-03 02:28:51,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-03 02:28:51,927 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2019-10-03 02:28:52,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:28:52,017 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2019-10-03 02:28:52,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-03 02:28:52,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-10-03 02:28:52,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:28:52,018 INFO L225 Difference]: With dead ends: 20 [2019-10-03 02:28:52,018 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:28:52,019 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-03 02:28:52,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:28:52,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:28:52,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:28:52,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:28:52,020 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2019-10-03 02:28:52,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:28:52,020 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:28:52,020 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-03 02:28:52,021 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:28:52,021 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:28:52,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:28:52 BoogieIcfgContainer [2019-10-03 02:28:52,027 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:28:52,031 INFO L168 Benchmark]: Toolchain (without parser) took 3390.01 ms. Allocated memory was 133.7 MB in the beginning and 227.0 MB in the end (delta: 93.3 MB). Free memory was 88.8 MB in the beginning and 149.8 MB in the end (delta: -61.0 MB). Peak memory consumption was 32.3 MB. Max. memory is 7.1 GB. [2019-10-03 02:28:52,032 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 133.7 MB. Free memory was 107.9 MB in the beginning and 107.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-03 02:28:52,033 INFO L168 Benchmark]: CACSL2BoogieTranslator took 788.12 ms. Allocated memory was 133.7 MB in the beginning and 201.3 MB in the end (delta: 67.6 MB). Free memory was 88.6 MB in the beginning and 163.0 MB in the end (delta: -74.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2019-10-03 02:28:52,034 INFO L168 Benchmark]: Boogie Preprocessor took 102.70 ms. Allocated memory is still 201.3 MB. Free memory was 163.0 MB in the beginning and 160.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2019-10-03 02:28:52,035 INFO L168 Benchmark]: RCFGBuilder took 724.60 ms. Allocated memory is still 201.3 MB. Free memory was 160.5 MB in the beginning and 117.6 MB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. [2019-10-03 02:28:52,036 INFO L168 Benchmark]: TraceAbstraction took 1769.47 ms. Allocated memory was 201.3 MB in the beginning and 227.0 MB in the end (delta: 25.7 MB). Free memory was 117.0 MB in the beginning and 149.8 MB in the end (delta: -32.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-03 02:28:52,040 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 133.7 MB. Free memory was 107.9 MB in the beginning and 107.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 788.12 ms. Allocated memory was 133.7 MB in the beginning and 201.3 MB in the end (delta: 67.6 MB). Free memory was 88.6 MB in the beginning and 163.0 MB in the end (delta: -74.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 102.70 ms. Allocated memory is still 201.3 MB. Free memory was 163.0 MB in the beginning and 160.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 724.60 ms. Allocated memory is still 201.3 MB. Free memory was 160.5 MB in the beginning and 117.6 MB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1769.47 ms. Allocated memory was 201.3 MB in the beginning and 227.0 MB in the end (delta: 25.7 MB). Free memory was 117.0 MB in the beginning and 149.8 MB in the end (delta: -32.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 602]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 48 locations, 1 error locations. SAFE Result, 1.6s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 109 SDtfs, 27 SDslu, 260 SDs, 0 SdLazy, 80 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.931547619047619 AbsIntWeakeningRatio, 1.0714285714285714 AbsIntAvgWeakeningVarsNumRemoved, 1.3571428571428572 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 4493 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 2/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...