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-simple/dll2n_insert_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:28:59,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:28:59,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:28:59,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:28:59,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:28:59,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:28:59,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:28:59,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:28:59,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:28:59,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:28:59,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:28:59,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:28:59,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:28:59,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:28:59,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:28:59,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:28:59,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:28:59,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:28:59,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:28:59,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:28:59,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:28:59,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:28:59,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:28:59,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:28:59,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:28:59,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:28:59,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:28:59,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:28:59,618 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:28:59,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:28:59,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:28:59,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:28:59,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:28:59,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:28:59,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:28:59,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:28:59,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:28:59,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:28:59,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:28:59,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:28:59,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:28:59,626 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 [2019-09-20 13:28:59,641 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:28:59,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:28:59,642 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:28:59,642 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:28:59,643 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:28:59,643 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:28:59,643 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:28:59,643 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:28:59,644 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:28:59,644 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:28:59,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:28:59,645 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:28:59,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:28:59,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:28:59,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:28:59,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:28:59,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:28:59,646 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:28:59,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:28:59,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:28:59,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:28:59,647 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:28:59,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:28:59,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:28:59,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:28:59,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:28:59,648 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:28:59,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:28:59,648 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:28:59,648 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:28:59,677 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:28:59,690 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:28:59,694 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:28:59,695 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:28:59,695 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:28:59,696 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_insert_equal.i [2019-09-20 13:28:59,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2c0b805f/a639c704482f4def948b7a2dbb7093cd/FLAGf296f1a50 [2019-09-20 13:29:00,379 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:29:00,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_insert_equal.i [2019-09-20 13:29:00,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2c0b805f/a639c704482f4def948b7a2dbb7093cd/FLAGf296f1a50 [2019-09-20 13:29:00,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2c0b805f/a639c704482f4def948b7a2dbb7093cd [2019-09-20 13:29:00,618 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:29:00,620 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:29:00,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:29:00,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:29:00,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:29:00,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:29:00" (1/1) ... [2019-09-20 13:29:00,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ee7771a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:00, skipping insertion in model container [2019-09-20 13:29:00,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:29:00" (1/1) ... [2019-09-20 13:29:00,638 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:29:00,692 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:29:01,171 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:29:01,184 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:29:01,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:29:01,303 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:29:01,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:01 WrapperNode [2019-09-20 13:29:01,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:29:01,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:29:01,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:29:01,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:29:01,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:01" (1/1) ... [2019-09-20 13:29:01,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:01" (1/1) ... [2019-09-20 13:29:01,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:01" (1/1) ... [2019-09-20 13:29:01,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:01" (1/1) ... [2019-09-20 13:29:01,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:01" (1/1) ... [2019-09-20 13:29:01,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:01" (1/1) ... [2019-09-20 13:29:01,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:01" (1/1) ... [2019-09-20 13:29:01,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:29:01,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:29:01,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:29:01,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:29:01,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:29:01,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:29:01,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:29:01,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-20 13:29:01,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-20 13:29:01,451 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-20 13:29:01,451 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-09-20 13:29:01,452 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2019-09-20 13:29:01,452 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2019-09-20 13:29:01,452 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert [2019-09-20 13:29:01,452 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:29:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:29:01,453 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-20 13:29:01,453 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-20 13:29:01,453 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-20 13:29:01,453 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-20 13:29:01,453 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-20 13:29:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-20 13:29:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-20 13:29:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-20 13:29:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-20 13:29:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-20 13:29:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-20 13:29:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-20 13:29:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-20 13:29:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-20 13:29:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-20 13:29:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-20 13:29:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-20 13:29:01,456 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-20 13:29:01,456 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-20 13:29:01,456 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-20 13:29:01,456 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-20 13:29:01,456 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-20 13:29:01,456 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-20 13:29:01,457 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-20 13:29:01,457 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-20 13:29:01,457 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-20 13:29:01,457 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-20 13:29:01,457 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-20 13:29:01,457 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-20 13:29:01,457 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-20 13:29:01,458 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-20 13:29:01,458 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-20 13:29:01,458 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-20 13:29:01,458 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-20 13:29:01,458 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-20 13:29:01,458 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-20 13:29:01,459 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-20 13:29:01,459 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-20 13:29:01,459 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-20 13:29:01,459 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-20 13:29:01,459 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-20 13:29:01,459 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-20 13:29:01,459 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-20 13:29:01,460 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-20 13:29:01,460 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-20 13:29:01,460 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-20 13:29:01,460 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-20 13:29:01,460 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-20 13:29:01,460 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-20 13:29:01,460 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-20 13:29:01,461 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-20 13:29:01,461 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-20 13:29:01,461 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:29:01,461 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-20 13:29:01,461 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-20 13:29:01,461 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:29:01,462 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-20 13:29:01,462 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-20 13:29:01,462 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-20 13:29:01,462 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-20 13:29:01,462 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-20 13:29:01,462 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-20 13:29:01,463 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-20 13:29:01,463 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-20 13:29:01,463 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-20 13:29:01,463 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-20 13:29:01,463 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-20 13:29:01,463 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-20 13:29:01,464 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-20 13:29:01,464 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-20 13:29:01,464 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-20 13:29:01,464 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-20 13:29:01,464 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-20 13:29:01,464 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-20 13:29:01,465 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-20 13:29:01,465 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-20 13:29:01,465 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-20 13:29:01,465 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-20 13:29:01,465 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-20 13:29:01,465 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-20 13:29:01,466 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-20 13:29:01,466 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-20 13:29:01,466 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-20 13:29:01,466 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-20 13:29:01,466 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-20 13:29:01,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-20 13:29:01,466 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-20 13:29:01,467 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-20 13:29:01,467 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-20 13:29:01,467 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-20 13:29:01,467 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-20 13:29:01,467 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-20 13:29:01,467 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-20 13:29:01,467 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-20 13:29:01,468 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-20 13:29:01,468 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-20 13:29:01,468 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-20 13:29:01,468 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-20 13:29:01,468 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-20 13:29:01,468 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-20 13:29:01,469 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-20 13:29:01,469 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-20 13:29:01,469 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-20 13:29:01,469 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-20 13:29:01,469 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-20 13:29:01,469 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-20 13:29:01,469 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-09-20 13:29:01,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:29:01,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:29:01,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:29:01,470 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2019-09-20 13:29:01,470 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2019-09-20 13:29:01,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:29:01,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:29:01,471 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert [2019-09-20 13:29:01,471 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:29:01,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:29:01,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-20 13:29:01,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:29:01,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:29:01,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:29:01,888 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-20 13:29:02,135 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:29:02,135 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-20 13:29:02,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:29:02 BoogieIcfgContainer [2019-09-20 13:29:02,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:29:02,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:29:02,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:29:02,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:29:02,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:29:00" (1/3) ... [2019-09-20 13:29:02,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4206e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:29:02, skipping insertion in model container [2019-09-20 13:29:02,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:29:01" (2/3) ... [2019-09-20 13:29:02,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4206e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:29:02, skipping insertion in model container [2019-09-20 13:29:02,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:29:02" (3/3) ... [2019-09-20 13:29:02,160 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_insert_equal.i [2019-09-20 13:29:02,171 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:29:02,184 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:29:02,198 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:29:02,220 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:29:02,221 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:29:02,221 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:29:02,221 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:29:02,221 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:29:02,221 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:29:02,221 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:29:02,222 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:29:02,237 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2019-09-20 13:29:02,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-09-20 13:29:02,249 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:02,250 INFO L407 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, 1, 1] [2019-09-20 13:29:02,252 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:02,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:02,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1788681453, now seen corresponding path program 1 times [2019-09-20 13:29:02,260 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:02,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:02,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:02,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:02,327 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:02,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:02,466 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:02,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:29:02,468 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:02,474 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:29:02,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:29:02,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:02,496 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2019-09-20 13:29:02,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:02,529 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2019-09-20 13:29:02,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:29:02,532 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2019-09-20 13:29:02,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:02,543 INFO L225 Difference]: With dead ends: 53 [2019-09-20 13:29:02,544 INFO L226 Difference]: Without dead ends: 39 [2019-09-20 13:29:02,548 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:02,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-09-20 13:29:02,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-09-20 13:29:02,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-09-20 13:29:02,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2019-09-20 13:29:02,610 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 31 [2019-09-20 13:29:02,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:02,611 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2019-09-20 13:29:02,611 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:29:02,612 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2019-09-20 13:29:02,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-09-20 13:29:02,614 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:02,614 INFO L407 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, 1, 1] [2019-09-20 13:29:02,615 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:02,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:02,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1747123946, now seen corresponding path program 1 times [2019-09-20 13:29:02,616 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:02,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:02,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:02,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:02,629 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:02,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:02,808 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:02,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:29:02,808 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:02,810 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:29:02,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:29:02,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:29:02,811 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 3 states. [2019-09-20 13:29:02,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:02,864 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2019-09-20 13:29:02,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:29:02,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2019-09-20 13:29:02,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:02,868 INFO L225 Difference]: With dead ends: 43 [2019-09-20 13:29:02,868 INFO L226 Difference]: Without dead ends: 43 [2019-09-20 13:29:02,869 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:29:02,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-09-20 13:29:02,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2019-09-20 13:29:02,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-09-20 13:29:02,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2019-09-20 13:29:02,878 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 31 [2019-09-20 13:29:02,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:02,880 INFO L475 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2019-09-20 13:29:02,880 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:29:02,880 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2019-09-20 13:29:02,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-09-20 13:29:02,883 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:02,883 INFO L407 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, 1, 1, 1] [2019-09-20 13:29:02,883 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:02,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:02,884 INFO L82 PathProgramCache]: Analyzing trace with hash 383573529, now seen corresponding path program 1 times [2019-09-20 13:29:02,884 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:02,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:02,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:02,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:02,890 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:03,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:29:03,027 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:03,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:29:03,027 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:03,028 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:29:03,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:29:03,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:29:03,029 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 8 states. [2019-09-20 13:29:03,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:03,122 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2019-09-20 13:29:03,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:29:03,123 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2019-09-20 13:29:03,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:03,124 INFO L225 Difference]: With dead ends: 53 [2019-09-20 13:29:03,124 INFO L226 Difference]: Without dead ends: 45 [2019-09-20 13:29:03,125 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:29:03,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-09-20 13:29:03,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2019-09-20 13:29:03,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-09-20 13:29:03,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2019-09-20 13:29:03,130 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 32 [2019-09-20 13:29:03,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:03,131 INFO L475 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2019-09-20 13:29:03,131 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:29:03,131 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2019-09-20 13:29:03,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-09-20 13:29:03,132 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:03,133 INFO L407 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:03,133 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:03,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:03,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1130860167, now seen corresponding path program 1 times [2019-09-20 13:29:03,133 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:03,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:03,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:03,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:03,137 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:03,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:29:03,185 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:29:03,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:29:03,185 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:03,185 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:29:03,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:29:03,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:29:03,187 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 3 states. [2019-09-20 13:29:03,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:03,217 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2019-09-20 13:29:03,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:29:03,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2019-09-20 13:29:03,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:03,219 INFO L225 Difference]: With dead ends: 45 [2019-09-20 13:29:03,219 INFO L226 Difference]: Without dead ends: 45 [2019-09-20 13:29:03,219 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:29:03,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-09-20 13:29:03,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2019-09-20 13:29:03,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-09-20 13:29:03,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2019-09-20 13:29:03,227 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 37 [2019-09-20 13:29:03,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:03,227 INFO L475 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2019-09-20 13:29:03,227 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:29:03,227 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2019-09-20 13:29:03,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-09-20 13:29:03,229 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:29:03,229 INFO L407 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:29:03,229 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:29:03,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:03,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1192899781, now seen corresponding path program 1 times [2019-09-20 13:29:03,230 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:29:03,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:03,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:29:03,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:29:03,234 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:29:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:29:03,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:29:03,325 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:29:03,325 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:29:03,326 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 38 with the following transitions: [2019-09-20 13:29:03,328 INFO L207 CegarAbsIntRunner]: [19], [21], [28], [30], [36], [39], [53], [56], [62], [64], [65], [66], [67], [68], [70], [72], [81], [84], [97], [102], [109], [111], [117], [119], [124], [126], [130], [131], [135], [136], [139], [140], [141], [142], [147], [148], [149] [2019-09-20 13:29:03,376 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:29:03,377 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:29:03,460 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:29:03,462 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 0. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 32 variables. [2019-09-20 13:29:03,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:29:03,465 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:29:03,507 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-20 13:29:03,507 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:29:03,510 INFO L420 sIntCurrentIteration]: We unified 36 AI predicates to 36 [2019-09-20 13:29:03,510 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:29:03,511 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:29:03,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2019-09-20 13:29:03,511 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:29:03,511 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:29:03,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:29:03,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:03,512 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 2 states. [2019-09-20 13:29:03,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:29:03,513 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-20 13:29:03,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:29:03,513 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2019-09-20 13:29:03,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:29:03,514 INFO L225 Difference]: With dead ends: 6 [2019-09-20 13:29:03,514 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:29:03,514 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:29:03,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:29:03,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:29:03,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:29:03,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:29:03,515 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2019-09-20 13:29:03,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:29:03,515 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:29:03,516 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:29:03,516 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:29:03,516 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:29:03,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:29:03 BoogieIcfgContainer [2019-09-20 13:29:03,521 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:29:03,524 INFO L168 Benchmark]: Toolchain (without parser) took 2903.15 ms. Allocated memory was 138.4 MB in the beginning and 221.2 MB in the end (delta: 82.8 MB). Free memory was 82.9 MB in the beginning and 125.4 MB in the end (delta: -42.5 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:03,525 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 103.1 MB in the beginning and 102.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:29:03,526 INFO L168 Benchmark]: CACSL2BoogieTranslator took 683.78 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 82.7 MB in the beginning and 162.2 MB in the end (delta: -79.4 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:03,527 INFO L168 Benchmark]: Boogie Preprocessor took 82.80 ms. Allocated memory is still 199.8 MB. Free memory was 161.6 MB in the beginning and 158.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:03,528 INFO L168 Benchmark]: RCFGBuilder took 755.17 ms. Allocated memory is still 199.8 MB. Free memory was 158.5 MB in the beginning and 106.8 MB in the end (delta: 51.7 MB). Peak memory consumption was 51.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:03,529 INFO L168 Benchmark]: TraceAbstraction took 1376.92 ms. Allocated memory was 199.8 MB in the beginning and 221.2 MB in the end (delta: 21.5 MB). Free memory was 106.8 MB in the beginning and 125.4 MB in the end (delta: -18.6 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:29:03,533 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 103.1 MB in the beginning and 102.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 683.78 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 82.7 MB in the beginning and 162.2 MB in the end (delta: -79.4 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.80 ms. Allocated memory is still 199.8 MB. Free memory was 161.6 MB in the beginning and 158.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 755.17 ms. Allocated memory is still 199.8 MB. Free memory was 158.5 MB in the beginning and 106.8 MB in the end (delta: 51.7 MB). Peak memory consumption was 51.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1376.92 ms. Allocated memory was 199.8 MB in the beginning and 221.2 MB in the end (delta: 21.5 MB). Free memory was 106.8 MB in the beginning and 125.4 MB in the end (delta: -18.6 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 643]: 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 10 procedures, 60 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 197 SDtfs, 29 SDslu, 297 SDs, 0 SdLazy, 58 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9722222222222222 AbsIntWeakeningRatio, 1.7777777777777777 AbsIntAvgWeakeningVarsNumRemoved, 0.16666666666666666 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 7 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 163 ConstructedInterpolants, 0 QuantifiedInterpolants, 8299 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 3/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...