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/dll2c_insert_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:47:47,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:47:47,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:47:47,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 01:47:47,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 01:47:47,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 01:47:47,578 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 01:47:47,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 01:47:47,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 01:47:47,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 01:47:47,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 01:47:47,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 01:47:47,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:47:47,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:47:47,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:47:47,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:47:47,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:47:47,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:47:47,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:47:47,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:47:47,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:47:47,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:47:47,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:47:47,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:47:47,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 01:47:47,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 01:47:47,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 01:47:47,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 01:47:47,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 01:47:47,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 01:47:47,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:47:47,634 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:47:47,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:47:47,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:47:47,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:47:47,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:47:47,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:47:47,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:47:47,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:47:47,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:47:47,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:47:47,642 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 [2019-09-10 01:47:47,682 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:47:47,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:47:47,683 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:47:47,683 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:47:47,684 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:47:47,684 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:47:47,687 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:47:47,687 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:47:47,688 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:47:47,688 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:47:47,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:47:47,690 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:47:47,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:47:47,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:47:47,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:47:47,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:47:47,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:47:47,691 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:47:47,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:47:47,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:47:47,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:47:47,692 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:47:47,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:47:47,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:47:47,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:47:47,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:47:47,694 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:47:47,694 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:47:47,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:47:47,694 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:47:47,750 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:47:47,763 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:47:47,766 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:47:47,768 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:47:47,768 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:47:47,769 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_insert_unequal.i [2019-09-10 01:47:47,824 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9d4fad4b/528683a576bf4348a91acfbf8380b3ce/FLAG72f129594 [2019-09-10 01:47:48,348 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:47:48,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2c_insert_unequal.i [2019-09-10 01:47:48,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9d4fad4b/528683a576bf4348a91acfbf8380b3ce/FLAG72f129594 [2019-09-10 01:47:48,630 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9d4fad4b/528683a576bf4348a91acfbf8380b3ce [2019-09-10 01:47:48,639 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:47:48,641 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:47:48,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:47:48,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:47:48,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:47:48,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:47:48" (1/1) ... [2019-09-10 01:47:48,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5104c5cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:48, skipping insertion in model container [2019-09-10 01:47:48,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:47:48" (1/1) ... [2019-09-10 01:47:48,657 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:47:48,717 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:47:49,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:47:49,174 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:47:49,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:47:49,310 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:47:49,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:49 WrapperNode [2019-09-10 01:47:49,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:47:49,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:47:49,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:47:49,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:47:49,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:49" (1/1) ... [2019-09-10 01:47:49,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:49" (1/1) ... [2019-09-10 01:47:49,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:49" (1/1) ... [2019-09-10 01:47:49,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:49" (1/1) ... [2019-09-10 01:47:49,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:49" (1/1) ... [2019-09-10 01:47:49,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:49" (1/1) ... [2019-09-10 01:47:49,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:49" (1/1) ... [2019-09-10 01:47:49,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:47:49,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:47:49,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:47:49,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:47:49,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:49" (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 [2019-09-10 01:47:49,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:47:49,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:47:49,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-10 01:47:49,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-10 01:47:49,454 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-10 01:47:49,454 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-09-10 01:47:49,454 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2019-09-10 01:47:49,454 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2019-09-10 01:47:49,455 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_insert [2019-09-10 01:47:49,455 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:47:49,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:47:49,455 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-10 01:47:49,455 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-10 01:47:49,456 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-10 01:47:49,456 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-10 01:47:49,456 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-10 01:47:49,456 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-10 01:47:49,456 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-10 01:47:49,456 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-10 01:47:49,457 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-10 01:47:49,457 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-10 01:47:49,457 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-10 01:47:49,457 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-10 01:47:49,457 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-10 01:47:49,457 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-10 01:47:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-10 01:47:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-10 01:47:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-10 01:47:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-10 01:47:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-10 01:47:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-10 01:47:49,458 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-10 01:47:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-10 01:47:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-10 01:47:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-10 01:47:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-10 01:47:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-10 01:47:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-10 01:47:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-10 01:47:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-10 01:47:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-10 01:47:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-10 01:47:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-10 01:47:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-10 01:47:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-10 01:47:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-10 01:47:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-10 01:47:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-10 01:47:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-10 01:47:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-10 01:47:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-10 01:47:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-10 01:47:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-10 01:47:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-10 01:47:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-10 01:47:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-10 01:47:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-10 01:47:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-10 01:47:49,463 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-10 01:47:49,463 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-10 01:47:49,463 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-10 01:47:49,463 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-10 01:47:49,463 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-10 01:47:49,463 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 01:47:49,464 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-10 01:47:49,464 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-10 01:47:49,464 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-10 01:47:49,464 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-10 01:47:49,464 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-10 01:47:49,464 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-10 01:47:49,464 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-10 01:47:49,465 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-10 01:47:49,465 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-10 01:47:49,465 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-10 01:47:49,465 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-10 01:47:49,465 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-10 01:47:49,465 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-10 01:47:49,466 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-10 01:47:49,466 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-10 01:47:49,466 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-10 01:47:49,466 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-10 01:47:49,466 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-10 01:47:49,466 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-10 01:47:49,467 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-10 01:47:49,467 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-10 01:47:49,467 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-10 01:47:49,467 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-10 01:47:49,467 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-10 01:47:49,467 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-10 01:47:49,468 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-10 01:47:49,468 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-10 01:47:49,468 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-10 01:47:49,468 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-10 01:47:49,468 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-10 01:47:49,468 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-10 01:47:49,468 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-10 01:47:49,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-10 01:47:49,469 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-10 01:47:49,469 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-10 01:47:49,469 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-10 01:47:49,469 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-10 01:47:49,469 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-10 01:47:49,469 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-10 01:47:49,470 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-10 01:47:49,470 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-10 01:47:49,470 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-10 01:47:49,470 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-10 01:47:49,470 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-10 01:47:49,470 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-10 01:47:49,470 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-10 01:47:49,471 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-10 01:47:49,471 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-10 01:47:49,471 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-10 01:47:49,471 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-10 01:47:49,471 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-10 01:47:49,471 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-10 01:47:49,471 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-10 01:47:49,472 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-09-10 01:47:49,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 01:47:49,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-10 01:47:49,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:47:49,472 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2019-09-10 01:47:49,472 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2019-09-10 01:47:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-10 01:47:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:47:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_insert [2019-09-10 01:47:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:47:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:47:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-10 01:47:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:47:49,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:47:49,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:47:49,928 INFO L684 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-10 01:47:50,200 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:47:50,200 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-10 01:47:50,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:47:50 BoogieIcfgContainer [2019-09-10 01:47:50,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:47:50,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:47:50,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:47:50,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:47:50,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:47:48" (1/3) ... [2019-09-10 01:47:50,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66875173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:47:50, skipping insertion in model container [2019-09-10 01:47:50,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:49" (2/3) ... [2019-09-10 01:47:50,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66875173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:47:50, skipping insertion in model container [2019-09-10 01:47:50,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:47:50" (3/3) ... [2019-09-10 01:47:50,224 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_insert_unequal.i [2019-09-10 01:47:50,236 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:47:50,247 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:47:50,266 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:47:50,296 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:47:50,296 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:47:50,297 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:47:50,297 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:47:50,297 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:47:50,297 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:47:50,298 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:47:50,298 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:47:50,316 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2019-09-10 01:47:50,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-09-10 01:47:50,328 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:47:50,329 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:47:50,332 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:47:50,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:47:50,338 INFO L82 PathProgramCache]: Analyzing trace with hash -641955206, now seen corresponding path program 1 times [2019-09-10 01:47:50,340 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:47:50,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:50,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:47:50,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:50,401 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:47:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:47:50,562 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-10 01:47:50,567 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:47:50,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:47:50,568 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:47:50,574 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:47:50,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:47:50,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:47:50,588 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 2 states. [2019-09-10 01:47:50,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:47:50,607 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2019-09-10 01:47:50,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:47:50,609 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2019-09-10 01:47:50,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:47:50,618 INFO L225 Difference]: With dead ends: 63 [2019-09-10 01:47:50,618 INFO L226 Difference]: Without dead ends: 48 [2019-09-10 01:47:50,620 INFO L628 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 [2019-09-10 01:47:50,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-09-10 01:47:50,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2019-09-10 01:47:50,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-09-10 01:47:50,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2019-09-10 01:47:50,665 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 37 [2019-09-10 01:47:50,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:47:50,666 INFO L475 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2019-09-10 01:47:50,666 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:47:50,667 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2019-09-10 01:47:50,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-09-10 01:47:50,669 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:47:50,669 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:47:50,669 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:47:50,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:47:50,670 INFO L82 PathProgramCache]: Analyzing trace with hash 82972775, now seen corresponding path program 1 times [2019-09-10 01:47:50,670 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:47:50,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:50,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:47:50,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:50,673 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:47:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:47:50,834 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-10 01:47:50,834 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:47:50,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 01:47:50,834 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:47:50,836 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 01:47:50,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 01:47:50,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:47:50,837 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand 3 states. [2019-09-10 01:47:50,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:47:50,867 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2019-09-10 01:47:50,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 01:47:50,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2019-09-10 01:47:50,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:47:50,871 INFO L225 Difference]: With dead ends: 52 [2019-09-10 01:47:50,871 INFO L226 Difference]: Without dead ends: 52 [2019-09-10 01:47:50,872 INFO L628 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 [2019-09-10 01:47:50,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-09-10 01:47:50,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2019-09-10 01:47:50,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-09-10 01:47:50,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2019-09-10 01:47:50,883 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 37 [2019-09-10 01:47:50,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:47:50,884 INFO L475 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2019-09-10 01:47:50,884 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 01:47:50,884 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2019-09-10 01:47:50,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-09-10 01:47:50,885 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:47:50,886 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:47:50,886 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:47:50,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:47:50,886 INFO L82 PathProgramCache]: Analyzing trace with hash 101153926, now seen corresponding path program 1 times [2019-09-10 01:47:50,886 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:47:50,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:50,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:47:50,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:50,888 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:47:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:47:51,021 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 01:47:51,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:47:51,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 01:47:51,022 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:47:51,023 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 01:47:51,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 01:47:51,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 01:47:51,025 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand 5 states. [2019-09-10 01:47:51,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:47:51,086 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2019-09-10 01:47:51,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 01:47:51,087 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-09-10 01:47:51,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:47:51,088 INFO L225 Difference]: With dead ends: 58 [2019-09-10 01:47:51,088 INFO L226 Difference]: Without dead ends: 55 [2019-09-10 01:47:51,089 INFO L628 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 [2019-09-10 01:47:51,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-09-10 01:47:51,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2019-09-10 01:47:51,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-09-10 01:47:51,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2019-09-10 01:47:51,096 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 38 [2019-09-10 01:47:51,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:47:51,097 INFO L475 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2019-09-10 01:47:51,097 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 01:47:51,097 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2019-09-10 01:47:51,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-09-10 01:47:51,099 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:47:51,099 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:47:51,099 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:47:51,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:47:51,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1254454618, now seen corresponding path program 1 times [2019-09-10 01:47:51,100 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:47:51,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:51,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:47:51,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:47:51,102 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:47:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:47:53,380 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2019-09-10 01:47:53,811 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-10 01:47:54,371 WARN L188 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2019-09-10 01:47:54,941 WARN L188 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 100 [2019-09-10 01:47:55,527 WARN L188 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 73 [2019-09-10 01:47:56,013 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:47:56,013 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:47:56,013 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 01:47:56,014 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 49 with the following transitions: [2019-09-10 01:47:56,017 INFO L207 CegarAbsIntRunner]: [0], [2], [9], [11], [13], [16], [20], [24], [25], [33], [39], [41], [42], [43], [44], [45], [47], [49], [53], [56], [101], [104], [106], [113], [115], [121], [132], [159], [160], [161], [162], [165], [166], [167], [168], [171], [172], [173], [174], [175] [2019-09-10 01:47:56,056 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 01:47:56,056 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 01:47:56,123 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 01:47:56,124 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 30 variables. [2019-09-10 01:47:56,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:47:56,129 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 01:47:56,168 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-10 01:47:56,169 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 01:47:56,172 INFO L420 sIntCurrentIteration]: We unified 47 AI predicates to 47 [2019-09-10 01:47:56,172 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 01:47:56,173 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 01:47:56,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [29] total 29 [2019-09-10 01:47:56,173 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:47:56,174 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:47:56,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:47:56,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:47:56,175 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand 2 states. [2019-09-10 01:47:56,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:47:56,175 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-10 01:47:56,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:47:56,176 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 48 [2019-09-10 01:47:56,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:47:56,176 INFO L225 Difference]: With dead ends: 6 [2019-09-10 01:47:56,176 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 01:47:56,177 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:47:56,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 01:47:56,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 01:47:56,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 01:47:56,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 01:47:56,178 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2019-09-10 01:47:56,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:47:56,178 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 01:47:56,178 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:47:56,178 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 01:47:56,178 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 01:47:56,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:47:56 BoogieIcfgContainer [2019-09-10 01:47:56,183 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:47:56,187 INFO L168 Benchmark]: Toolchain (without parser) took 7544.27 ms. Allocated memory was 137.9 MB in the beginning and 285.7 MB in the end (delta: 147.8 MB). Free memory was 92.1 MB in the beginning and 120.4 MB in the end (delta: -28.3 MB). Peak memory consumption was 119.6 MB. Max. memory is 7.1 GB. [2019-09-10 01:47:56,188 INFO L168 Benchmark]: CDTParser took 1.11 ms. Allocated memory is still 137.9 MB. Free memory was 111.1 MB in the beginning and 110.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:47:56,189 INFO L168 Benchmark]: CACSL2BoogieTranslator took 669.55 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 91.9 MB in the beginning and 165.8 MB in the end (delta: -73.9 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2019-09-10 01:47:56,190 INFO L168 Benchmark]: Boogie Preprocessor took 76.40 ms. Allocated memory is still 203.4 MB. Free memory was 165.8 MB in the beginning and 162.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2019-09-10 01:47:56,191 INFO L168 Benchmark]: RCFGBuilder took 813.63 ms. Allocated memory is still 203.4 MB. Free memory was 162.5 MB in the beginning and 106.5 MB in the end (delta: 56.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. [2019-09-10 01:47:56,192 INFO L168 Benchmark]: TraceAbstraction took 5980.02 ms. Allocated memory was 203.4 MB in the beginning and 285.7 MB in the end (delta: 82.3 MB). Free memory was 106.5 MB in the beginning and 120.4 MB in the end (delta: -13.9 MB). Peak memory consumption was 68.4 MB. Max. memory is 7.1 GB. [2019-09-10 01:47:56,195 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.11 ms. Allocated memory is still 137.9 MB. Free memory was 111.1 MB in the beginning and 110.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 669.55 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 91.9 MB in the beginning and 165.8 MB in the end (delta: -73.9 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 76.40 ms. Allocated memory is still 203.4 MB. Free memory was 165.8 MB in the beginning and 162.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 813.63 ms. Allocated memory is still 203.4 MB. Free memory was 162.5 MB in the beginning and 106.5 MB in the end (delta: 56.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5980.02 ms. Allocated memory was 203.4 MB in the beginning and 285.7 MB in the end (delta: 82.3 MB). Free memory was 106.5 MB in the beginning and 120.4 MB in the end (delta: -13.9 MB). Peak memory consumption was 68.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 661]: 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, 70 locations, 1 error locations. SAFE Result, 5.8s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 197 SDtfs, 31 SDslu, 190 SDs, 0 SdLazy, 25 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred 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, 0.9787234042553191 AbsIntWeakeningRatio, 1.7446808510638299 AbsIntAvgWeakeningVarsNumRemoved, 0.1276595744680851 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 244235 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 23/33 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...