java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:09:26,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:09:26,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:09:26,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:09:26,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:09:26,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:09:26,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:09:26,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:09:26,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:09:26,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:09:26,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:09:26,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:09:26,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:09:26,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:09:26,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:09:26,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:09:26,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:09:26,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:09:26,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:09:26,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:09:26,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:09:26,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:09:26,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:09:26,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:09:26,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:09:26,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:09:26,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:09:26,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:09:26,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:09:26,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:09:26,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:09:26,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:09:26,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:09:26,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:09:26,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:09:26,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:09:26,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:09:26,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:09:26,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:09:26,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:09:26,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:09:26,471 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:09:26,496 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:09:26,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:09:26,498 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:09:26,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:09:26,498 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:09:26,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:09:26,499 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:09:26,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:09:26,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:09:26,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:09:26,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:09:26,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:09:26,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:09:26,500 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:09:26,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:09:26,500 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:09:26,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:09:26,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:09:26,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:09:26,501 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:09:26,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:09:26,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:09:26,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:09:26,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:09:26,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:09:26,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:09:26,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:09:26,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:09:26,503 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:09:26,760 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:09:26,773 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:09:26,778 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:09:26,779 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:09:26,780 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:09:26,781 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i [2019-10-13 19:09:26,863 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1183b4097/b95ac78f551849cfb82ba89106122583/FLAGa56e4eb1c [2019-10-13 19:09:27,414 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:09:27,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.i [2019-10-13 19:09:27,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1183b4097/b95ac78f551849cfb82ba89106122583/FLAGa56e4eb1c [2019-10-13 19:09:27,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1183b4097/b95ac78f551849cfb82ba89106122583 [2019-10-13 19:09:27,729 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:09:27,730 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:09:27,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:09:27,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:09:27,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:09:27,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:09:27" (1/1) ... [2019-10-13 19:09:27,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22af5c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:27, skipping insertion in model container [2019-10-13 19:09:27,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:09:27" (1/1) ... [2019-10-13 19:09:27,747 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:09:27,800 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:09:28,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:09:28,248 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:09:28,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:09:28,379 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:09:28,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:28 WrapperNode [2019-10-13 19:09:28,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:09:28,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:09:28,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:09:28,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:09:28,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:28" (1/1) ... [2019-10-13 19:09:28,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:28" (1/1) ... [2019-10-13 19:09:28,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:28" (1/1) ... [2019-10-13 19:09:28,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:28" (1/1) ... [2019-10-13 19:09:28,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:28" (1/1) ... [2019-10-13 19:09:28,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:28" (1/1) ... [2019-10-13 19:09:28,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:28" (1/1) ... [2019-10-13 19:09:28,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:09:28,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:09:28,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:09:28,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:09:28,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:09:28,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:09:28,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:09:28,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2019-10-13 19:09:28,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2019-10-13 19:09:28,497 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2019-10-13 19:09:28,497 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2019-10-13 19:09:28,497 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2019-10-13 19:09:28,497 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:09:28,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:09:28,498 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2019-10-13 19:09:28,498 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2019-10-13 19:09:28,500 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2019-10-13 19:09:28,501 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2019-10-13 19:09:28,501 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2019-10-13 19:09:28,502 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2019-10-13 19:09:28,502 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2019-10-13 19:09:28,505 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2019-10-13 19:09:28,505 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2019-10-13 19:09:28,505 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2019-10-13 19:09:28,505 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2019-10-13 19:09:28,505 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2019-10-13 19:09:28,506 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2019-10-13 19:09:28,506 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2019-10-13 19:09:28,506 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2019-10-13 19:09:28,506 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2019-10-13 19:09:28,506 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2019-10-13 19:09:28,506 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2019-10-13 19:09:28,506 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2019-10-13 19:09:28,507 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2019-10-13 19:09:28,507 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2019-10-13 19:09:28,507 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2019-10-13 19:09:28,507 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2019-10-13 19:09:28,507 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2019-10-13 19:09:28,507 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2019-10-13 19:09:28,508 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2019-10-13 19:09:28,508 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2019-10-13 19:09:28,508 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2019-10-13 19:09:28,508 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2019-10-13 19:09:28,508 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-10-13 19:09:28,508 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2019-10-13 19:09:28,508 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2019-10-13 19:09:28,508 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2019-10-13 19:09:28,509 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2019-10-13 19:09:28,509 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2019-10-13 19:09:28,509 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2019-10-13 19:09:28,509 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2019-10-13 19:09:28,509 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2019-10-13 19:09:28,509 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2019-10-13 19:09:28,509 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 19:09:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2019-10-13 19:09:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2019-10-13 19:09:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2019-10-13 19:09:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2019-10-13 19:09:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2019-10-13 19:09:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2019-10-13 19:09:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2019-10-13 19:09:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2019-10-13 19:09:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2019-10-13 19:09:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2019-10-13 19:09:28,511 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2019-10-13 19:09:28,511 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2019-10-13 19:09:28,511 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2019-10-13 19:09:28,511 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2019-10-13 19:09:28,511 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2019-10-13 19:09:28,511 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2019-10-13 19:09:28,511 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2019-10-13 19:09:28,511 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2019-10-13 19:09:28,511 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2019-10-13 19:09:28,511 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2019-10-13 19:09:28,512 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2019-10-13 19:09:28,512 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2019-10-13 19:09:28,512 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2019-10-13 19:09:28,512 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2019-10-13 19:09:28,512 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2019-10-13 19:09:28,512 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2019-10-13 19:09:28,512 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2019-10-13 19:09:28,513 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2019-10-13 19:09:28,513 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2019-10-13 19:09:28,513 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2019-10-13 19:09:28,513 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2019-10-13 19:09:28,513 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2019-10-13 19:09:28,513 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2019-10-13 19:09:28,513 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2019-10-13 19:09:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 19:09:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2019-10-13 19:09:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2019-10-13 19:09:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2019-10-13 19:09:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2019-10-13 19:09:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2019-10-13 19:09:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2019-10-13 19:09:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2019-10-13 19:09:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2019-10-13 19:09:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2019-10-13 19:09:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2019-10-13 19:09:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2019-10-13 19:09:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2019-10-13 19:09:28,516 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2019-10-13 19:09:28,516 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2019-10-13 19:09:28,516 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2019-10-13 19:09:28,516 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2019-10-13 19:09:28,516 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2019-10-13 19:09:28,516 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2019-10-13 19:09:28,517 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2019-10-13 19:09:28,517 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2019-10-13 19:09:28,517 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2019-10-13 19:09:28,517 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2019-10-13 19:09:28,517 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2019-10-13 19:09:28,517 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2019-10-13 19:09:28,517 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2019-10-13 19:09:28,518 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2019-10-13 19:09:28,518 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2019-10-13 19:09:28,518 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:09:28,518 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 19:09:28,518 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 19:09:28,518 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:09:28,518 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-13 19:09:28,519 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2019-10-13 19:09:28,519 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 19:09:28,519 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2019-10-13 19:09:28,519 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2019-10-13 19:09:28,519 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2019-10-13 19:09:28,519 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2019-10-13 19:09:28,519 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2019-10-13 19:09:28,520 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2019-10-13 19:09:28,520 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2019-10-13 19:09:28,520 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2019-10-13 19:09:28,520 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2019-10-13 19:09:28,520 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2019-10-13 19:09:28,520 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2019-10-13 19:09:28,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:09:28,521 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2019-10-13 19:09:28,521 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2019-10-13 19:09:28,521 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2019-10-13 19:09:28,521 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2019-10-13 19:09:28,521 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:09:28,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:09:28,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:09:28,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 19:09:28,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:09:28,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:09:28,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:09:28,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:09:29,047 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:09:29,048 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:09:29,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:09:29 BoogieIcfgContainer [2019-10-13 19:09:29,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:09:29,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:09:29,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:09:29,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:09:29,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:09:27" (1/3) ... [2019-10-13 19:09:29,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f07733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:09:29, skipping insertion in model container [2019-10-13 19:09:29,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:09:28" (2/3) ... [2019-10-13 19:09:29,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f07733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:09:29, skipping insertion in model container [2019-10-13 19:09:29,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:09:29" (3/3) ... [2019-10-13 19:09:29,060 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.i [2019-10-13 19:09:29,072 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:09:29,081 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:09:29,094 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:09:29,132 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:09:29,132 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:09:29,132 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:09:29,132 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:09:29,133 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:09:29,133 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:09:29,133 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:09:29,133 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:09:29,159 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2019-10-13 19:09:29,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-13 19:09:29,168 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:09:29,169 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:09:29,173 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:09:29,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:09:29,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1135050545, now seen corresponding path program 1 times [2019-10-13 19:09:29,190 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:09:29,191 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749776121] [2019-10-13 19:09:29,191 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:09:29,191 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:09:29,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:09:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:29,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:09:29,558 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749776121] [2019-10-13 19:09:29,560 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:09:29,560 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:09:29,561 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859388026] [2019-10-13 19:09:29,566 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:09:29,567 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:09:29,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:09:29,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:09:29,585 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 7 states. [2019-10-13 19:09:30,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:09:30,092 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2019-10-13 19:09:30,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:09:30,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-10-13 19:09:30,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:09:30,112 INFO L225 Difference]: With dead ends: 88 [2019-10-13 19:09:30,112 INFO L226 Difference]: Without dead ends: 43 [2019-10-13 19:09:30,128 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:09:30,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-13 19:09:30,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2019-10-13 19:09:30,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-13 19:09:30,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2019-10-13 19:09:30,209 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 13 [2019-10-13 19:09:30,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:09:30,209 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2019-10-13 19:09:30,209 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:09:30,210 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2019-10-13 19:09:30,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-13 19:09:30,214 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:09:30,215 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:09:30,217 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:09:30,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:09:30,218 INFO L82 PathProgramCache]: Analyzing trace with hash -925661111, now seen corresponding path program 1 times [2019-10-13 19:09:30,219 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:09:30,219 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504636225] [2019-10-13 19:09:30,219 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:09:30,220 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:09:30,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:09:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:30,538 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 19:09:30,539 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504636225] [2019-10-13 19:09:30,540 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:09:30,540 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:09:30,540 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536125234] [2019-10-13 19:09:30,542 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 19:09:30,542 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:09:30,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 19:09:30,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:09:30,543 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 9 states. [2019-10-13 19:09:30,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:09:30,759 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2019-10-13 19:09:30,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:09:30,760 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2019-10-13 19:09:30,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:09:30,762 INFO L225 Difference]: With dead ends: 67 [2019-10-13 19:09:30,762 INFO L226 Difference]: Without dead ends: 48 [2019-10-13 19:09:30,764 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:09:30,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-13 19:09:30,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2019-10-13 19:09:30,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-13 19:09:30,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2019-10-13 19:09:30,777 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 38 [2019-10-13 19:09:30,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:09:30,778 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2019-10-13 19:09:30,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 19:09:30,778 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2019-10-13 19:09:30,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-13 19:09:30,779 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:09:30,780 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:09:30,780 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:09:30,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:09:30,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1219064118, now seen corresponding path program 1 times [2019-10-13 19:09:30,781 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:09:30,781 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679498470] [2019-10-13 19:09:30,781 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:09:30,781 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:09:30,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:09:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:30,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:31,027 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 19:09:31,027 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679498470] [2019-10-13 19:09:31,027 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913634765] [2019-10-13 19:09:31,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:09:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:31,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 26 conjunts are in the unsatisfiable core [2019-10-13 19:09:31,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:09:31,540 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 19:09:31,541 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 19:09:31,541 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [9] total 20 [2019-10-13 19:09:31,541 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42910840] [2019-10-13 19:09:31,542 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-13 19:09:31,542 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:09:31,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-13 19:09:31,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2019-10-13 19:09:31,543 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 13 states. [2019-10-13 19:09:32,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:09:32,098 INFO L93 Difference]: Finished difference Result 76 states and 87 transitions. [2019-10-13 19:09:32,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 19:09:32,099 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2019-10-13 19:09:32,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:09:32,103 INFO L225 Difference]: With dead ends: 76 [2019-10-13 19:09:32,103 INFO L226 Difference]: Without dead ends: 65 [2019-10-13 19:09:32,104 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2019-10-13 19:09:32,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-10-13 19:09:32,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2019-10-13 19:09:32,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-10-13 19:09:32,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2019-10-13 19:09:32,118 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 38 [2019-10-13 19:09:32,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:09:32,119 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2019-10-13 19:09:32,119 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-13 19:09:32,119 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2019-10-13 19:09:32,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-13 19:09:32,121 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:09:32,121 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:09:32,327 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:09:32,328 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:09:32,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:09:32,328 INFO L82 PathProgramCache]: Analyzing trace with hash -775693011, now seen corresponding path program 1 times [2019-10-13 19:09:32,329 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:09:32,329 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951771324] [2019-10-13 19:09:32,329 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:09:32,329 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:09:32,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:09:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:32,594 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 19:09:32,594 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951771324] [2019-10-13 19:09:32,594 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349094274] [2019-10-13 19:09:32,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:09:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:32,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 31 conjunts are in the unsatisfiable core [2019-10-13 19:09:32,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:09:33,149 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 19:09:33,149 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:09:33,150 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 20] total 28 [2019-10-13 19:09:33,150 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113565095] [2019-10-13 19:09:33,151 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-10-13 19:09:33,151 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:09:33,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-10-13 19:09:33,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-13 19:09:33,152 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 28 states. [2019-10-13 19:09:34,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:09:34,587 INFO L93 Difference]: Finished difference Result 93 states and 109 transitions. [2019-10-13 19:09:34,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 19:09:34,588 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 45 [2019-10-13 19:09:34,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:09:34,590 INFO L225 Difference]: With dead ends: 93 [2019-10-13 19:09:34,590 INFO L226 Difference]: Without dead ends: 56 [2019-10-13 19:09:34,592 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=230, Invalid=1750, Unknown=0, NotChecked=0, Total=1980 [2019-10-13 19:09:34,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-10-13 19:09:34,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2019-10-13 19:09:34,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-10-13 19:09:34,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2019-10-13 19:09:34,603 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 45 [2019-10-13 19:09:34,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:09:34,603 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2019-10-13 19:09:34,603 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-10-13 19:09:34,603 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2019-10-13 19:09:34,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-13 19:09:34,605 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:09:34,605 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:09:34,809 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:09:34,810 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:09:34,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:09:34,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1335597358, now seen corresponding path program 1 times [2019-10-13 19:09:34,811 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:09:34,811 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904048270] [2019-10-13 19:09:34,811 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:09:34,812 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:09:34,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:09:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:35,195 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 19:09:35,195 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904048270] [2019-10-13 19:09:35,196 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021579352] [2019-10-13 19:09:35,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:09:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:35,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-13 19:09:35,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:09:35,524 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:09:35,525 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:09:35,525 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 29 [2019-10-13 19:09:35,525 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419892764] [2019-10-13 19:09:35,526 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-10-13 19:09:35,526 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:09:35,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-10-13 19:09:35,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2019-10-13 19:09:35,527 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 29 states. [2019-10-13 19:09:36,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:09:36,879 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2019-10-13 19:09:36,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-13 19:09:36,880 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 45 [2019-10-13 19:09:36,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:09:36,882 INFO L225 Difference]: With dead ends: 65 [2019-10-13 19:09:36,882 INFO L226 Difference]: Without dead ends: 58 [2019-10-13 19:09:36,884 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2019-10-13 19:09:36,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-10-13 19:09:36,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2019-10-13 19:09:36,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-10-13 19:09:36,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2019-10-13 19:09:36,894 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 45 [2019-10-13 19:09:36,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:09:36,895 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2019-10-13 19:09:36,895 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-10-13 19:09:36,895 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2019-10-13 19:09:36,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-13 19:09:36,896 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:09:36,897 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:09:37,100 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:09:37,101 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:09:37,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:09:37,102 INFO L82 PathProgramCache]: Analyzing trace with hash 526250732, now seen corresponding path program 1 times [2019-10-13 19:09:37,102 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:09:37,102 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988190560] [2019-10-13 19:09:37,103 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:09:37,103 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:09:37,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:09:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:37,409 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 19:09:37,410 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988190560] [2019-10-13 19:09:37,410 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847185173] [2019-10-13 19:09:37,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:09:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:37,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-13 19:09:37,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:09:37,883 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:09:37,883 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:09:37,883 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 28 [2019-10-13 19:09:37,884 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632329604] [2019-10-13 19:09:37,884 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-10-13 19:09:37,884 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:09:37,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-10-13 19:09:37,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2019-10-13 19:09:37,885 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 28 states. [2019-10-13 19:09:39,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:09:39,087 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2019-10-13 19:09:39,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-13 19:09:39,088 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 45 [2019-10-13 19:09:39,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:09:39,090 INFO L225 Difference]: With dead ends: 70 [2019-10-13 19:09:39,090 INFO L226 Difference]: Without dead ends: 67 [2019-10-13 19:09:39,091 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=250, Invalid=1310, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 19:09:39,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-10-13 19:09:39,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 54. [2019-10-13 19:09:39,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-10-13 19:09:39,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2019-10-13 19:09:39,101 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 45 [2019-10-13 19:09:39,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:09:39,102 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2019-10-13 19:09:39,102 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-10-13 19:09:39,102 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2019-10-13 19:09:39,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:09:39,104 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:09:39,104 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:09:39,312 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:09:39,313 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:09:39,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:09:39,314 INFO L82 PathProgramCache]: Analyzing trace with hash -2119488644, now seen corresponding path program 1 times [2019-10-13 19:09:39,314 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:09:39,314 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801552490] [2019-10-13 19:09:39,315 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:09:39,315 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:09:39,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:09:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:39,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:39,637 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 19:09:39,638 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801552490] [2019-10-13 19:09:39,639 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554965595] [2019-10-13 19:09:39,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:09:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:39,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-13 19:09:39,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:09:40,353 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:09:40,354 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:09:40,354 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 35 [2019-10-13 19:09:40,354 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358673877] [2019-10-13 19:09:40,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-10-13 19:09:40,355 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:09:40,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-10-13 19:09:40,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1097, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 19:09:40,356 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 35 states. [2019-10-13 19:09:42,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:09:42,168 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2019-10-13 19:09:42,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-10-13 19:09:42,169 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 57 [2019-10-13 19:09:42,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:09:42,171 INFO L225 Difference]: With dead ends: 74 [2019-10-13 19:09:42,172 INFO L226 Difference]: Without dead ends: 63 [2019-10-13 19:09:42,174 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=369, Invalid=3053, Unknown=0, NotChecked=0, Total=3422 [2019-10-13 19:09:42,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-10-13 19:09:42,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2019-10-13 19:09:42,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-10-13 19:09:42,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2019-10-13 19:09:42,183 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 57 [2019-10-13 19:09:42,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:09:42,183 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2019-10-13 19:09:42,183 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-10-13 19:09:42,184 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2019-10-13 19:09:42,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:09:42,185 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:09:42,185 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:09:42,389 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:09:42,389 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:09:42,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:09:42,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1366132026, now seen corresponding path program 1 times [2019-10-13 19:09:42,391 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:09:42,391 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723988650] [2019-10-13 19:09:42,391 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:09:42,391 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:09:42,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:09:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:42,803 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 19:09:42,803 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723988650] [2019-10-13 19:09:42,804 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369280249] [2019-10-13 19:09:42,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:09:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:42,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 25 conjunts are in the unsatisfiable core [2019-10-13 19:09:42,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:09:43,189 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:09:43,190 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:09:43,190 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20] total 31 [2019-10-13 19:09:43,191 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549840262] [2019-10-13 19:09:43,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-10-13 19:09:43,192 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:09:43,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-10-13 19:09:43,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2019-10-13 19:09:43,193 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 31 states. [2019-10-13 19:09:44,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:09:44,249 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2019-10-13 19:09:44,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-13 19:09:44,249 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 57 [2019-10-13 19:09:44,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:09:44,251 INFO L225 Difference]: With dead ends: 61 [2019-10-13 19:09:44,251 INFO L226 Difference]: Without dead ends: 47 [2019-10-13 19:09:44,253 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=243, Invalid=1827, Unknown=0, NotChecked=0, Total=2070 [2019-10-13 19:09:44,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-10-13 19:09:44,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-10-13 19:09:44,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-10-13 19:09:44,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2019-10-13 19:09:44,260 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 57 [2019-10-13 19:09:44,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:09:44,261 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2019-10-13 19:09:44,261 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-10-13 19:09:44,261 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2019-10-13 19:09:44,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 19:09:44,262 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:09:44,262 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:09:44,466 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:09:44,466 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:09:44,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:09:44,467 INFO L82 PathProgramCache]: Analyzing trace with hash 779326012, now seen corresponding path program 1 times [2019-10-13 19:09:44,468 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:09:44,468 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443290984] [2019-10-13 19:09:44,468 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:09:44,469 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:09:44,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:09:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:44,621 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 19:09:44,622 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443290984] [2019-10-13 19:09:44,637 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730541609] [2019-10-13 19:09:44,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:09:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:09:44,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 37 conjunts are in the unsatisfiable core [2019-10-13 19:09:44,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:09:44,834 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-13 19:09:44,835 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:09:44,835 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 11 [2019-10-13 19:09:44,835 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883324558] [2019-10-13 19:09:44,836 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 19:09:44,836 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:09:44,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 19:09:44,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:09:44,837 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 11 states. [2019-10-13 19:09:45,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:09:45,183 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2019-10-13 19:09:45,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 19:09:45,183 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2019-10-13 19:09:45,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:09:45,184 INFO L225 Difference]: With dead ends: 47 [2019-10-13 19:09:45,184 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:09:45,185 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 65 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:09:45,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:09:45,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:09:45,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:09:45,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:09:45,186 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2019-10-13 19:09:45,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:09:45,186 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:09:45,186 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 19:09:45,187 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:09:45,187 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:09:45,387 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:09:45,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:09:45,958 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 30 [2019-10-13 19:09:46,202 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 28 [2019-10-13 19:09:46,727 INFO L443 ceAbstractionStarter]: For program point my_mallocFINAL(lines 878 880) no Hoare annotation was computed. [2019-10-13 19:09:46,728 INFO L439 ceAbstractionStarter]: At program point L879(line 879) the Hoare annotation is: (let ((.cse3 (not (= |my_malloc_#in~size| 8))) (.cse1 (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|)) (.cse2 (= my_malloc_~size 8)) (.cse0 (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|))) (and (or (not (<= 1 |old(~guard_malloc_counter~0.offset)|)) (not (<= ~elem~0.offset 0)) (and .cse0 .cse1 .cse2) .cse3) (or (or (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) .cse3) (not (= ~elem~0.offset 0))) (and .cse1 .cse2 .cse0)))) [2019-10-13 19:09:46,728 INFO L443 ceAbstractionStarter]: For program point L879-1(line 879) no Hoare annotation was computed. [2019-10-13 19:09:46,729 INFO L439 ceAbstractionStarter]: At program point my_mallocENTRY(lines 878 880) the Hoare annotation is: (let ((.cse2 (not (= |my_malloc_#in~size| 8))) (.cse1 (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|)) (.cse0 (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|))) (and (or (not (<= 1 |old(~guard_malloc_counter~0.offset)|)) (and .cse0 .cse1) (not (<= ~elem~0.offset 0)) .cse2) (or (or (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) .cse2) (not (= ~elem~0.offset 0))) (and .cse1 .cse0)))) [2019-10-13 19:09:46,729 INFO L443 ceAbstractionStarter]: For program point my_mallocEXIT(lines 878 880) no Hoare annotation was computed. [2019-10-13 19:09:46,729 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:09:46,729 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= ~elem~0.base |old(~elem~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |~#head~0.base| |old(~#head~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~elem~0.offset |old(~elem~0.offset)|) (= |old(#length)| |#length|) (= |~#head~0.offset| |old(~#head~0.offset)|) (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|)) [2019-10-13 19:09:46,729 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:09:46,729 INFO L443 ceAbstractionStarter]: For program point L896(lines 896 897) no Hoare annotation was computed. [2019-10-13 19:09:46,729 INFO L443 ceAbstractionStarter]: For program point L896-2(lines 895 898) no Hoare annotation was computed. [2019-10-13 19:09:46,729 INFO L443 ceAbstractionStarter]: For program point list_delEXIT(lines 895 898) no Hoare annotation was computed. [2019-10-13 19:09:46,730 INFO L439 ceAbstractionStarter]: At program point list_delENTRY(lines 895 898) the Hoare annotation is: (or (not (<= 1 ~guard_malloc_counter~0.offset)) (and (= ~elem~0.base |old(~elem~0.base)|) (= ~elem~0.offset |old(~elem~0.offset)|))) [2019-10-13 19:09:46,730 INFO L439 ceAbstractionStarter]: At program point list_addENTRY(lines 889 893) the Hoare annotation is: (let ((.cse1 (not (<= 1 ~guard_malloc_counter~0.offset))) (.cse0 (and (= ~elem~0.base |old(~elem~0.base)|) (= ~elem~0.offset |old(~elem~0.offset)|)))) (and (or .cse0 .cse1 (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|))) (or .cse1 (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|)) .cse0))) [2019-10-13 19:09:46,730 INFO L443 ceAbstractionStarter]: For program point L891(lines 891 892) no Hoare annotation was computed. [2019-10-13 19:09:46,730 INFO L443 ceAbstractionStarter]: For program point L890(line 890) no Hoare annotation was computed. [2019-10-13 19:09:46,730 INFO L443 ceAbstractionStarter]: For program point L891-2(lines 889 893) no Hoare annotation was computed. [2019-10-13 19:09:46,730 INFO L439 ceAbstractionStarter]: At program point L890-2(line 890) the Hoare annotation is: (let ((.cse0 (not (<= 1 ~guard_malloc_counter~0.offset)))) (and (or .cse0 (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|))) (or .cse0 (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|))))) [2019-10-13 19:09:46,730 INFO L443 ceAbstractionStarter]: For program point L890-3(line 890) no Hoare annotation was computed. [2019-10-13 19:09:46,730 INFO L443 ceAbstractionStarter]: For program point list_addEXIT(lines 889 893) no Hoare annotation was computed. [2019-10-13 19:09:46,730 INFO L443 ceAbstractionStarter]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2019-10-13 19:09:46,731 INFO L443 ceAbstractionStarter]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-10-13 19:09:46,731 INFO L443 ceAbstractionStarter]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2019-10-13 19:09:46,731 INFO L446 ceAbstractionStarter]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2019-10-13 19:09:46,731 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:09:46,731 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (= 0 ~guard_malloc_counter~0.offset) (= ~elem~0.offset 0)) [2019-10-13 19:09:46,731 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:09:46,731 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:09:46,732 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 902 917) the Hoare annotation is: (or (not (= |old(~elem~0.offset)| 0)) (not (= 0 |old(~guard_malloc_counter~0.offset)|)) (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~elem~0.base |old(~elem~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~elem~0.offset 0))) [2019-10-13 19:09:46,732 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 902 917) no Hoare annotation was computed. [2019-10-13 19:09:46,732 INFO L439 ceAbstractionStarter]: At program point L909(line 909) the Hoare annotation is: (let ((.cse0 (<= 1 ~guard_malloc_counter~0.offset)) (.cse1 (<= 2 main_~dev2~0.offset))) (or (not (= |old(~elem~0.offset)| 0)) (and (and (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) .cse0 .cse1 (<= (+ ~elem~0.offset 1) main_~dev2~0.offset)) (and .cse0 .cse1 (<= ~elem~0.offset 0)) (not (= 0 |old(~guard_malloc_counter~0.offset)|)))) [2019-10-13 19:09:46,732 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 902 917) no Hoare annotation was computed. [2019-10-13 19:09:46,732 INFO L439 ceAbstractionStarter]: At program point L908(line 908) the Hoare annotation is: (let ((.cse0 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset)) (.cse1 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse2 (<= 1 ~guard_malloc_counter~0.offset)) (.cse3 (<= 2 main_~dev2~0.offset))) (or (not (= |old(~elem~0.offset)| 0)) (and (= main_~dev2~0.base ~elem~0.base) .cse0 .cse1 .cse2 .cse3 (= main_~dev2~0.offset ~elem~0.offset)) (and .cse0 .cse1 .cse2 .cse3 (<= (+ ~elem~0.offset 1) main_~dev2~0.offset)) (and .cse2 .cse3 (<= ~elem~0.offset 0)) (not (= 0 |old(~guard_malloc_counter~0.offset)|)))) [2019-10-13 19:09:46,732 INFO L439 ceAbstractionStarter]: At program point L907(line 907) the Hoare annotation is: (or (not (= |old(~elem~0.offset)| 0)) (and (<= 1 main_~dev1~0.offset) (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (= ~elem~0.base |old(~elem~0.base)|) (= ~elem~0.offset 0)) (not (= 0 |old(~guard_malloc_counter~0.offset)|))) [2019-10-13 19:09:46,732 INFO L443 ceAbstractionStarter]: For program point L906(lines 906 915) no Hoare annotation was computed. [2019-10-13 19:09:46,733 INFO L439 ceAbstractionStarter]: At program point L907-1(line 907) the Hoare annotation is: (let ((.cse1 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse0 (+ main_~dev1~0.offset 1))) (or (not (= |old(~elem~0.offset)| 0)) (and (<= 1 main_~dev1~0.offset) (<= .cse0 main_~dev2~0.offset) .cse1 (= ~elem~0.base |old(~elem~0.base)|) (= ~elem~0.offset 0)) (and (= main_~dev2~0.base ~elem~0.base) .cse1 (<= .cse0 ~elem~0.offset) (<= 1 ~guard_malloc_counter~0.offset) (<= 2 main_~dev2~0.offset) (= main_~dev2~0.offset ~elem~0.offset)) (not (= 0 |old(~guard_malloc_counter~0.offset)|)))) [2019-10-13 19:09:46,733 INFO L439 ceAbstractionStarter]: At program point L905(line 905) the Hoare annotation is: (let ((.cse0 (= ~elem~0.base |old(~elem~0.base)|))) (or (not (= |old(~elem~0.offset)| 0)) (and (= 0 main_~dev1~0.base) .cse0 (<= 1 ~guard_malloc_counter~0.offset) (= main_~dev1~0.offset 0) (= ~elem~0.offset |old(~elem~0.offset)|)) (not (= 0 |old(~guard_malloc_counter~0.offset)|)) (and (<= 1 main_~dev1~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) .cse0 (= ~elem~0.offset 0)))) [2019-10-13 19:09:46,733 INFO L443 ceAbstractionStarter]: For program point L906-1(lines 906 915) no Hoare annotation was computed. [2019-10-13 19:09:46,733 INFO L439 ceAbstractionStarter]: At program point L904(line 904) the Hoare annotation is: (or (not (= |old(~elem~0.offset)| 0)) (not (= 0 |old(~guard_malloc_counter~0.offset)|)) (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~elem~0.base |old(~elem~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~elem~0.offset 0))) [2019-10-13 19:09:46,733 INFO L443 ceAbstractionStarter]: For program point L905-1(line 905) no Hoare annotation was computed. [2019-10-13 19:09:46,733 INFO L443 ceAbstractionStarter]: For program point L904-1(line 904) no Hoare annotation was computed. [2019-10-13 19:09:46,733 INFO L439 ceAbstractionStarter]: At program point __getMemoryENTRY(lines 869 876) the Hoare annotation is: (or (or (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (not (= |__getMemory_#in~size| 8))) (not (= ~elem~0.offset 0))) (and (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|))) [2019-10-13 19:09:46,733 INFO L443 ceAbstractionStarter]: For program point __getMemoryEXIT(lines 869 876) no Hoare annotation was computed. [2019-10-13 19:09:46,733 INFO L443 ceAbstractionStarter]: For program point __getMemoryFINAL(lines 869 876) no Hoare annotation was computed. [2019-10-13 19:09:46,734 INFO L443 ceAbstractionStarter]: For program point L873(lines 873 874) no Hoare annotation was computed. [2019-10-13 19:09:46,734 INFO L443 ceAbstractionStarter]: For program point L871(line 871) no Hoare annotation was computed. [2019-10-13 19:09:46,734 INFO L439 ceAbstractionStarter]: At program point L871-2(line 871) the Hoare annotation is: (or (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (not (= |__getMemory_#in~size| 8))) (not (= ~elem~0.offset 0))) [2019-10-13 19:09:46,734 INFO L443 ceAbstractionStarter]: For program point L871-3(line 871) no Hoare annotation was computed. [2019-10-13 19:09:46,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:09:46 BoogieIcfgContainer [2019-10-13 19:09:46,737 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:09:46,741 INFO L168 Benchmark]: Toolchain (without parser) took 19008.46 ms. Allocated memory was 138.9 MB in the beginning and 407.9 MB in the end (delta: 269.0 MB). Free memory was 101.2 MB in the beginning and 337.1 MB in the end (delta: -235.9 MB). Peak memory consumption was 282.6 MB. Max. memory is 7.1 GB. [2019-10-13 19:09:46,742 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 138.9 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-13 19:09:46,743 INFO L168 Benchmark]: CACSL2BoogieTranslator took 649.11 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.8 MB in the beginning and 168.5 MB in the end (delta: -67.7 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2019-10-13 19:09:46,744 INFO L168 Benchmark]: Boogie Preprocessor took 59.38 ms. Allocated memory is still 203.4 MB. Free memory was 168.5 MB in the beginning and 165.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2019-10-13 19:09:46,745 INFO L168 Benchmark]: RCFGBuilder took 609.28 ms. Allocated memory is still 203.4 MB. Free memory was 165.7 MB in the beginning and 120.6 MB in the end (delta: 45.0 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2019-10-13 19:09:46,745 INFO L168 Benchmark]: TraceAbstraction took 17685.18 ms. Allocated memory was 203.4 MB in the beginning and 407.9 MB in the end (delta: 204.5 MB). Free memory was 120.6 MB in the beginning and 337.1 MB in the end (delta: -216.5 MB). Peak memory consumption was 237.5 MB. Max. memory is 7.1 GB. [2019-10-13 19:09:46,749 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 138.9 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 649.11 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.8 MB in the beginning and 168.5 MB in the end (delta: -67.7 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 59.38 ms. Allocated memory is still 203.4 MB. Free memory was 168.5 MB in the beginning and 165.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 609.28 ms. Allocated memory is still 203.4 MB. Free memory was 165.7 MB in the beginning and 120.6 MB in the end (delta: 45.0 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17685.18 ms. Allocated memory was 203.4 MB in the beginning and 407.9 MB in the end (delta: 204.5 MB). Free memory was 120.6 MB in the beginning and 337.1 MB in the end (delta: -216.5 MB). Peak memory consumption was 237.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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 8 procedures, 47 locations, 1 error locations. Result: SAFE, OverallTime: 17.6s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 8.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, HoareTripleCheckerStatistics: 311 SDtfs, 555 SDslu, 973 SDs, 0 SdLazy, 5318 SolverSat, 530 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 656 GetRequests, 369 SyntacticMatches, 4 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1574 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 46 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 74 PreInvPairs, 85 NumberOfFragments, 497 HoareAnnotationTreeSize, 74 FomulaSimplifications, 3380 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 18 FomulaSimplificationsInter, 1869 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 739 NumberOfCodeBlocks, 739 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 723 ConstructedInterpolants, 0 QuantifiedInterpolants, 143998 SizeOfPredicates, 49 NumberOfNonLiveVariables, 1969 ConjunctsInSsa, 188 ConjunctsInUnsatCore, 16 InterpolantComputations, 3 PerfectInterpolantSequences, 148/237 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...