/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:42:59,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:42:59,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:42:59,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:42:59,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:42:59,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:42:59,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:42:59,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:42:59,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:42:59,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:42:59,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:42:59,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:42:59,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:42:59,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:42:59,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:42:59,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:42:59,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:42:59,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:42:59,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:42:59,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:42:59,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:42:59,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:42:59,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:42:59,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:42:59,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 16:42:59,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 16:42:59,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 16:42:59,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 16:42:59,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 16:42:59,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 16:42:59,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 16:42:59,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 16:42:59,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 16:42:59,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 16:42:59,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 16:42:59,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 16:42:59,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 16:42:59,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 16:42:59,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:42:59,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:42:59,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:42:59,389 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 16:42:59,429 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:42:59,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:42:59,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:42:59,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:42:59,434 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:42:59,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:42:59,434 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:42:59,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:42:59,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:42:59,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:42:59,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:42:59,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:42:59,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:42:59,437 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:42:59,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:42:59,438 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:42:59,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:42:59,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:42:59,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:42:59,438 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:42:59,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:42:59,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:42:59,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:42:59,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:42:59,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:42:59,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:42:59,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:42:59,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:42:59,440 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:42:59,441 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:42:59,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:42:59,774 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:42:59,780 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:42:59,782 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:42:59,783 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:42:59,784 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-08-22 16:42:59,850 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e95aa05e/fad7ea87d3e64a5d94227d1189748175/FLAG98b446b95 [2020-08-22 16:43:00,439 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:43:00,439 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-08-22 16:43:00,452 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e95aa05e/fad7ea87d3e64a5d94227d1189748175/FLAG98b446b95 [2020-08-22 16:43:00,704 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e95aa05e/fad7ea87d3e64a5d94227d1189748175 [2020-08-22 16:43:00,713 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:43:00,715 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:43:00,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:43:00,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:43:00,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:43:00,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:43:00" (1/1) ... [2020-08-22 16:43:00,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40f5f1e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:43:00, skipping insertion in model container [2020-08-22 16:43:00,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:43:00" (1/1) ... [2020-08-22 16:43:00,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:43:00,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:43:01,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:43:01,243 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:43:01,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:43:01,382 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:43:01,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:43:01 WrapperNode [2020-08-22 16:43:01,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:43:01,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:43:01,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:43:01,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:43:01,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:43:01" (1/1) ... [2020-08-22 16:43:01,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:43:01" (1/1) ... [2020-08-22 16:43:01,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:43:01" (1/1) ... [2020-08-22 16:43:01,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:43:01" (1/1) ... [2020-08-22 16:43:01,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:43:01" (1/1) ... [2020-08-22 16:43:01,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:43:01" (1/1) ... [2020-08-22 16:43:01,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:43:01" (1/1) ... [2020-08-22 16:43:01,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:43:01,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:43:01,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:43:01,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:43:01,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:43:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:43:01,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:43:01,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:43:01,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-08-22 16:43:01,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-08-22 16:43:01,517 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-08-22 16:43:01,517 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-08-22 16:43:01,517 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-08-22 16:43:01,517 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:43:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:43:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-08-22 16:43:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-08-22 16:43:01,518 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-08-22 16:43:01,518 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-08-22 16:43:01,518 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-08-22 16:43:01,518 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-08-22 16:43:01,518 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-08-22 16:43:01,519 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-08-22 16:43:01,519 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-08-22 16:43:01,519 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-08-22 16:43:01,519 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-08-22 16:43:01,519 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-08-22 16:43:01,519 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-08-22 16:43:01,519 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-08-22 16:43:01,520 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-08-22 16:43:01,520 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-08-22 16:43:01,520 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-08-22 16:43:01,521 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-08-22 16:43:01,521 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-08-22 16:43:01,521 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-08-22 16:43:01,521 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-08-22 16:43:01,521 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-08-22 16:43:01,521 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-08-22 16:43:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-08-22 16:43:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-08-22 16:43:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-08-22 16:43:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-08-22 16:43:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-08-22 16:43:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-08-22 16:43:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-08-22 16:43:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-08-22 16:43:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-08-22 16:43:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-08-22 16:43:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-08-22 16:43:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-08-22 16:43:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-08-22 16:43:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-08-22 16:43:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-08-22 16:43:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-08-22 16:43:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 16:43:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-08-22 16:43:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-08-22 16:43:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-08-22 16:43:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-08-22 16:43:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-08-22 16:43:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-08-22 16:43:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-08-22 16:43:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-08-22 16:43:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-08-22 16:43:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-08-22 16:43:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-08-22 16:43:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-08-22 16:43:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-08-22 16:43:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-08-22 16:43:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-08-22 16:43:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-08-22 16:43:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-08-22 16:43:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-08-22 16:43:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-08-22 16:43:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-08-22 16:43:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-08-22 16:43:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-08-22 16:43:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-08-22 16:43:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-08-22 16:43:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-08-22 16:43:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-08-22 16:43:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-08-22 16:43:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-08-22 16:43:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-08-22 16:43:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-08-22 16:43:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-08-22 16:43:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-08-22 16:43:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-08-22 16:43:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-08-22 16:43:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-08-22 16:43:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-08-22 16:43:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-08-22 16:43:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-08-22 16:43:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-08-22 16:43:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-08-22 16:43:01,529 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-08-22 16:43:01,529 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-08-22 16:43:01,529 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-08-22 16:43:01,529 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-08-22 16:43:01,529 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-08-22 16:43:01,529 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-08-22 16:43:01,529 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-08-22 16:43:01,530 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-08-22 16:43:01,530 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-08-22 16:43:01,530 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-08-22 16:43:01,530 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-08-22 16:43:01,530 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-08-22 16:43:01,530 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-08-22 16:43:01,530 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-08-22 16:43:01,531 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-08-22 16:43:01,531 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-08-22 16:43:01,531 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-08-22 16:43:01,531 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-08-22 16:43:01,531 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-08-22 16:43:01,531 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-08-22 16:43:01,532 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-08-22 16:43:01,532 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-08-22 16:43:01,532 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 16:43:01,532 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 16:43:01,532 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 16:43:01,532 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 16:43:01,532 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 16:43:01,533 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-08-22 16:43:01,533 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 16:43:01,533 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-08-22 16:43:01,533 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-08-22 16:43:01,533 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-08-22 16:43:01,533 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-08-22 16:43:01,533 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-08-22 16:43:01,534 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-08-22 16:43:01,534 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-08-22 16:43:01,534 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-08-22 16:43:01,534 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-08-22 16:43:01,534 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-08-22 16:43:01,534 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-08-22 16:43:01,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:43:01,535 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-08-22 16:43:01,535 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-08-22 16:43:01,535 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-08-22 16:43:01,535 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-08-22 16:43:01,535 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:43:01,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:43:01,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 16:43:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 16:43:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:43:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 16:43:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 16:43:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:43:02,063 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:43:02,064 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 16:43:02,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:43:02 BoogieIcfgContainer [2020-08-22 16:43:02,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:43:02,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:43:02,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:43:02,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:43:02,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:43:00" (1/3) ... [2020-08-22 16:43:02,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4798fc33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:43:02, skipping insertion in model container [2020-08-22 16:43:02,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:43:01" (2/3) ... [2020-08-22 16:43:02,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4798fc33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:43:02, skipping insertion in model container [2020-08-22 16:43:02,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:43:02" (3/3) ... [2020-08-22 16:43:02,078 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.i [2020-08-22 16:43:02,090 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:43:02,098 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:43:02,114 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:43:02,141 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:43:02,142 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:43:02,142 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:43:02,142 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:43:02,142 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:43:02,143 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:43:02,143 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:43:02,143 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:43:02,165 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-22 16:43:02,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-22 16:43:02,172 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:43:02,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:43:02,174 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:43:02,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:43:02,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1135050545, now seen corresponding path program 1 times [2020-08-22 16:43:02,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:43:02,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371807552] [2020-08-22 16:43:02,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:43:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:02,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:43:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:02,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:43:02,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371807552] [2020-08-22 16:43:02,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:43:02,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 16:43:02,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763414128] [2020-08-22 16:43:02,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 16:43:02,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:43:02,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 16:43:02,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 16:43:02,556 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 7 states. [2020-08-22 16:43:03,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:43:03,100 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2020-08-22 16:43:03,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 16:43:03,102 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-08-22 16:43:03,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:43:03,115 INFO L225 Difference]: With dead ends: 88 [2020-08-22 16:43:03,115 INFO L226 Difference]: Without dead ends: 43 [2020-08-22 16:43:03,120 INFO L675 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 [2020-08-22 16:43:03,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-22 16:43:03,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-08-22 16:43:03,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-22 16:43:03,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-08-22 16:43:03,175 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 13 [2020-08-22 16:43:03,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:43:03,175 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-08-22 16:43:03,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 16:43:03,176 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-08-22 16:43:03,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-22 16:43:03,178 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:43:03,179 INFO L422 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] [2020-08-22 16:43:03,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:43:03,180 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:43:03,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:43:03,181 INFO L82 PathProgramCache]: Analyzing trace with hash -925661111, now seen corresponding path program 1 times [2020-08-22 16:43:03,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:43:03,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139924702] [2020-08-22 16:43:03,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:43:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:03,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:43:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:03,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:43:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:03,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:43:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:03,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 16:43:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:03,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:43:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:03,478 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 16:43:03,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139924702] [2020-08-22 16:43:03,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:43:03,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 16:43:03,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655096693] [2020-08-22 16:43:03,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 16:43:03,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:43:03,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 16:43:03,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 16:43:03,483 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 9 states. [2020-08-22 16:43:03,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:43:03,744 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2020-08-22 16:43:03,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 16:43:03,745 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-08-22 16:43:03,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:43:03,747 INFO L225 Difference]: With dead ends: 67 [2020-08-22 16:43:03,747 INFO L226 Difference]: Without dead ends: 48 [2020-08-22 16:43:03,750 INFO L675 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 [2020-08-22 16:43:03,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-22 16:43:03,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-08-22 16:43:03,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-22 16:43:03,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-08-22 16:43:03,779 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 38 [2020-08-22 16:43:03,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:43:03,781 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-08-22 16:43:03,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 16:43:03,781 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-08-22 16:43:03,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-22 16:43:03,782 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:43:03,783 INFO L422 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] [2020-08-22 16:43:03,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:43:03,783 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:43:03,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:43:03,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1219064118, now seen corresponding path program 1 times [2020-08-22 16:43:03,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:43:03,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815205294] [2020-08-22 16:43:03,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:43:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:03,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:43:03,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:03,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:43:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:03,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:43:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:04,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 16:43:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:04,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:43:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:04,078 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 16:43:04,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815205294] [2020-08-22 16:43:04,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231615168] [2020-08-22 16:43:04,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:43:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:04,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 26 conjunts are in the unsatisfiable core [2020-08-22 16:43:04,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:43:04,698 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 16:43:04,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-08-22 16:43:04,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [9] total 20 [2020-08-22 16:43:04,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386379783] [2020-08-22 16:43:04,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 16:43:04,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:43:04,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 16:43:04,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2020-08-22 16:43:04,701 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 13 states. [2020-08-22 16:43:05,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:43:05,260 INFO L93 Difference]: Finished difference Result 76 states and 87 transitions. [2020-08-22 16:43:05,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 16:43:05,261 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-08-22 16:43:05,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:43:05,264 INFO L225 Difference]: With dead ends: 76 [2020-08-22 16:43:05,264 INFO L226 Difference]: Without dead ends: 65 [2020-08-22 16:43:05,265 INFO L675 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 [2020-08-22 16:43:05,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-08-22 16:43:05,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2020-08-22 16:43:05,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-08-22 16:43:05,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-08-22 16:43:05,279 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 38 [2020-08-22 16:43:05,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:43:05,279 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-08-22 16:43:05,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 16:43:05,280 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-08-22 16:43:05,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-22 16:43:05,281 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:43:05,281 INFO L422 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] [2020-08-22 16:43:05,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-08-22 16:43:05,498 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:43:05,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:43:05,499 INFO L82 PathProgramCache]: Analyzing trace with hash -775693011, now seen corresponding path program 1 times [2020-08-22 16:43:05,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:43:05,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366347789] [2020-08-22 16:43:05,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:43:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:05,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:43:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:05,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:43:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:05,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:43:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:05,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 16:43:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:05,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:43:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:05,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 16:43:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:05,915 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 16:43:05,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366347789] [2020-08-22 16:43:05,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007973460] [2020-08-22 16:43:05,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:43:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:06,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 31 conjunts are in the unsatisfiable core [2020-08-22 16:43:06,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:43:06,758 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 16:43:06,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:43:06,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 41 [2020-08-22 16:43:06,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050750280] [2020-08-22 16:43:06,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-08-22 16:43:06,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:43:06,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-08-22 16:43:06,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1529, Unknown=0, NotChecked=0, Total=1640 [2020-08-22 16:43:06,765 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 41 states. [2020-08-22 16:43:09,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:43:09,396 INFO L93 Difference]: Finished difference Result 81 states and 100 transitions. [2020-08-22 16:43:09,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 16:43:09,397 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 45 [2020-08-22 16:43:09,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:43:09,399 INFO L225 Difference]: With dead ends: 81 [2020-08-22 16:43:09,400 INFO L226 Difference]: Without dead ends: 78 [2020-08-22 16:43:09,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=405, Invalid=3501, Unknown=0, NotChecked=0, Total=3906 [2020-08-22 16:43:09,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-08-22 16:43:09,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 71. [2020-08-22 16:43:09,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-08-22 16:43:09,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2020-08-22 16:43:09,421 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 45 [2020-08-22 16:43:09,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:43:09,421 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2020-08-22 16:43:09,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-08-22 16:43:09,422 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2020-08-22 16:43:09,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-22 16:43:09,424 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:43:09,424 INFO L422 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] [2020-08-22 16:43:09,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:43:09,639 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:43:09,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:43:09,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1585039637, now seen corresponding path program 1 times [2020-08-22 16:43:09,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:43:09,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087375921] [2020-08-22 16:43:09,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:43:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:09,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:43:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:09,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:43:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:09,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:43:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:09,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 16:43:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:09,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:43:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:09,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 16:43:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:09,858 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 16:43:09,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087375921] [2020-08-22 16:43:09,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653983342] [2020-08-22 16:43:09,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:43:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:10,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 21 conjunts are in the unsatisfiable core [2020-08-22 16:43:10,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:43:10,047 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-22 16:43:10,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:43:10,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 10 [2020-08-22 16:43:10,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026277071] [2020-08-22 16:43:10,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 16:43:10,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:43:10,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 16:43:10,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-22 16:43:10,051 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand 10 states. [2020-08-22 16:43:10,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:43:10,395 INFO L93 Difference]: Finished difference Result 101 states and 117 transitions. [2020-08-22 16:43:10,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 16:43:10,396 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-08-22 16:43:10,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:43:10,398 INFO L225 Difference]: With dead ends: 101 [2020-08-22 16:43:10,398 INFO L226 Difference]: Without dead ends: 56 [2020-08-22 16:43:10,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-08-22 16:43:10,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-08-22 16:43:10,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-08-22 16:43:10,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-22 16:43:10,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2020-08-22 16:43:10,410 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 45 [2020-08-22 16:43:10,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:43:10,410 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2020-08-22 16:43:10,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 16:43:10,410 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2020-08-22 16:43:10,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-22 16:43:10,412 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:43:10,412 INFO L422 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] [2020-08-22 16:43:10,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:43:10,620 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:43:10,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:43:10,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1335597358, now seen corresponding path program 1 times [2020-08-22 16:43:10,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:43:10,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027007532] [2020-08-22 16:43:10,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:43:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:10,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:43:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:10,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:43:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:10,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:43:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:10,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 16:43:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:10,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:43:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:10,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 16:43:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:11,031 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 16:43:11,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027007532] [2020-08-22 16:43:11,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273259938] [2020-08-22 16:43:11,032 INFO L95 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 [2020-08-22 16:43:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:11,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 23 conjunts are in the unsatisfiable core [2020-08-22 16:43:11,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:43:11,424 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:43:11,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:43:11,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 29 [2020-08-22 16:43:11,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869826725] [2020-08-22 16:43:11,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-08-22 16:43:11,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:43:11,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-08-22 16:43:11,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2020-08-22 16:43:11,427 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 29 states. [2020-08-22 16:43:12,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:43:12,532 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2020-08-22 16:43:12,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 16:43:12,533 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 45 [2020-08-22 16:43:12,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:43:12,535 INFO L225 Difference]: With dead ends: 65 [2020-08-22 16:43:12,535 INFO L226 Difference]: Without dead ends: 58 [2020-08-22 16:43:12,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2020-08-22 16:43:12,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-22 16:43:12,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-08-22 16:43:12,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-22 16:43:12,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-08-22 16:43:12,547 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 45 [2020-08-22 16:43:12,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:43:12,548 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-08-22 16:43:12,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-08-22 16:43:12,548 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-08-22 16:43:12,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-22 16:43:12,549 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:43:12,549 INFO L422 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] [2020-08-22 16:43:12,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:43:12,764 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:43:12,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:43:12,764 INFO L82 PathProgramCache]: Analyzing trace with hash 526250732, now seen corresponding path program 1 times [2020-08-22 16:43:12,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:43:12,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48042639] [2020-08-22 16:43:12,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:43:12,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:12,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:43:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:12,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:43:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:12,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:43:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:13,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 16:43:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:13,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:43:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:13,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 16:43:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:13,077 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 16:43:13,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48042639] [2020-08-22 16:43:13,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617290128] [2020-08-22 16:43:13,078 INFO L95 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 [2020-08-22 16:43:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:13,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 23 conjunts are in the unsatisfiable core [2020-08-22 16:43:13,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:43:13,568 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:43:13,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:43:13,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 28 [2020-08-22 16:43:13,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028879545] [2020-08-22 16:43:13,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-22 16:43:13,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:43:13,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-22 16:43:13,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2020-08-22 16:43:13,571 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 28 states. [2020-08-22 16:43:14,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:43:14,575 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-08-22 16:43:14,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-22 16:43:14,576 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 45 [2020-08-22 16:43:14,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:43:14,578 INFO L225 Difference]: With dead ends: 65 [2020-08-22 16:43:14,578 INFO L226 Difference]: Without dead ends: 62 [2020-08-22 16:43:14,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=244, Invalid=1238, Unknown=0, NotChecked=0, Total=1482 [2020-08-22 16:43:14,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-08-22 16:43:14,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-08-22 16:43:14,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-22 16:43:14,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-08-22 16:43:14,589 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 45 [2020-08-22 16:43:14,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:43:14,590 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-08-22 16:43:14,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-22 16:43:14,590 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-08-22 16:43:14,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 16:43:14,591 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:43:14,592 INFO L422 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] [2020-08-22 16:43:14,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-08-22 16:43:14,801 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:43:14,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:43:14,802 INFO L82 PathProgramCache]: Analyzing trace with hash -2119488644, now seen corresponding path program 1 times [2020-08-22 16:43:14,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:43:14,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425310422] [2020-08-22 16:43:14,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:43:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:14,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:43:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:14,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:43:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:14,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:43:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:14,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 16:43:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:15,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:43:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:15,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 16:43:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:15,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 16:43:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:15,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 16:43:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:15,173 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 16:43:15,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425310422] [2020-08-22 16:43:15,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177194882] [2020-08-22 16:43:15,174 INFO L95 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 [2020-08-22 16:43:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:15,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 23 conjunts are in the unsatisfiable core [2020-08-22 16:43:15,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:43:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 16:43:15,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:43:15,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 31 [2020-08-22 16:43:15,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465620] [2020-08-22 16:43:15,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-08-22 16:43:15,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:43:15,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-08-22 16:43:15,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=846, Unknown=0, NotChecked=0, Total=930 [2020-08-22 16:43:15,591 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 31 states. [2020-08-22 16:43:16,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:43:16,872 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-08-22 16:43:16,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 16:43:16,873 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 57 [2020-08-22 16:43:16,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:43:16,875 INFO L225 Difference]: With dead ends: 66 [2020-08-22 16:43:16,875 INFO L226 Difference]: Without dead ends: 60 [2020-08-22 16:43:16,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=245, Invalid=2011, Unknown=0, NotChecked=0, Total=2256 [2020-08-22 16:43:16,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-08-22 16:43:16,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2020-08-22 16:43:16,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-08-22 16:43:16,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2020-08-22 16:43:16,901 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 57 [2020-08-22 16:43:16,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:43:16,902 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2020-08-22 16:43:16,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-08-22 16:43:16,902 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2020-08-22 16:43:16,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 16:43:16,903 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:43:16,904 INFO L422 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] [2020-08-22 16:43:17,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:43:17,122 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:43:17,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:43:17,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1366132026, now seen corresponding path program 1 times [2020-08-22 16:43:17,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:43:17,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002231421] [2020-08-22 16:43:17,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:43:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:17,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:43:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:17,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:43:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:17,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:43:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:17,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 16:43:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:17,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:43:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:17,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 16:43:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:17,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 16:43:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:17,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 16:43:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:17,600 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 16:43:17,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002231421] [2020-08-22 16:43:17,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327140532] [2020-08-22 16:43:17,601 INFO L95 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 [2020-08-22 16:43:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:17,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 25 conjunts are in the unsatisfiable core [2020-08-22 16:43:17,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:43:18,023 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 16:43:18,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:43:18,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20] total 31 [2020-08-22 16:43:18,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729278572] [2020-08-22 16:43:18,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-08-22 16:43:18,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:43:18,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-08-22 16:43:18,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2020-08-22 16:43:18,026 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 31 states. [2020-08-22 16:43:19,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:43:19,097 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-08-22 16:43:19,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 16:43:19,097 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 57 [2020-08-22 16:43:19,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:43:19,099 INFO L225 Difference]: With dead ends: 63 [2020-08-22 16:43:19,099 INFO L226 Difference]: Without dead ends: 49 [2020-08-22 16:43:19,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=243, Invalid=1827, Unknown=0, NotChecked=0, Total=2070 [2020-08-22 16:43:19,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-08-22 16:43:19,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-08-22 16:43:19,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-22 16:43:19,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-08-22 16:43:19,107 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 57 [2020-08-22 16:43:19,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:43:19,108 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-08-22 16:43:19,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-08-22 16:43:19,108 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-08-22 16:43:19,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 16:43:19,109 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:43:19,110 INFO L422 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] [2020-08-22 16:43:19,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:43:19,324 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:43:19,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:43:19,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1588672638, now seen corresponding path program 1 times [2020-08-22 16:43:19,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:43:19,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815701190] [2020-08-22 16:43:19,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:43:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:19,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:43:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:19,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:43:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:19,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:43:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:19,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 16:43:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:19,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:43:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:19,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 16:43:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:19,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 16:43:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:19,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 16:43:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:19,629 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-22 16:43:19,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815701190] [2020-08-22 16:43:19,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009368422] [2020-08-22 16:43:19,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:43:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:19,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 24 conjunts are in the unsatisfiable core [2020-08-22 16:43:19,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:43:20,130 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-22 16:43:20,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-08-22 16:43:20,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [18] total 26 [2020-08-22 16:43:20,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051961661] [2020-08-22 16:43:20,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 16:43:20,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:43:20,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 16:43:20,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2020-08-22 16:43:20,133 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 15 states. [2020-08-22 16:43:20,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:43:20,693 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-08-22 16:43:20,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 16:43:20,694 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-08-22 16:43:20,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:43:20,695 INFO L225 Difference]: With dead ends: 60 [2020-08-22 16:43:20,695 INFO L226 Difference]: Without dead ends: 52 [2020-08-22 16:43:20,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=218, Invalid=1264, Unknown=0, NotChecked=0, Total=1482 [2020-08-22 16:43:20,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-22 16:43:20,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2020-08-22 16:43:20,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-22 16:43:20,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-08-22 16:43:20,711 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 57 [2020-08-22 16:43:20,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:43:20,712 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-08-22 16:43:20,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 16:43:20,712 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-08-22 16:43:20,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 16:43:20,713 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:43:20,713 INFO L422 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] [2020-08-22 16:43:20,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-08-22 16:43:20,914 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:43:20,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:43:20,915 INFO L82 PathProgramCache]: Analyzing trace with hash 779326012, now seen corresponding path program 1 times [2020-08-22 16:43:20,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:43:20,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878559004] [2020-08-22 16:43:20,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:43:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:20,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:43:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:20,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:43:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:20,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:43:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:20,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 16:43:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:20,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:43:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:21,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 16:43:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:21,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 16:43:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:21,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 16:43:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:21,081 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-22 16:43:21,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878559004] [2020-08-22 16:43:21,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653130304] [2020-08-22 16:43:21,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:43:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:43:21,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 37 conjunts are in the unsatisfiable core [2020-08-22 16:43:21,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:43:21,253 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-22 16:43:21,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:43:21,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 11 [2020-08-22 16:43:21,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785058473] [2020-08-22 16:43:21,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 16:43:21,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:43:21,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 16:43:21,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-08-22 16:43:21,255 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 11 states. [2020-08-22 16:43:21,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:43:21,579 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-08-22 16:43:21,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 16:43:21,580 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-08-22 16:43:21,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:43:21,580 INFO L225 Difference]: With dead ends: 47 [2020-08-22 16:43:21,580 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 16:43:21,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 65 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-08-22 16:43:21,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 16:43:21,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 16:43:21,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 16:43:21,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 16:43:21,582 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2020-08-22 16:43:21,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:43:21,582 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 16:43:21,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 16:43:21,582 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 16:43:21,582 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 16:43:21,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:43:21,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 16:43:22,163 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 37 [2020-08-22 16:43:22,274 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2020-08-22 16:43:22,494 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-08-22 16:43:22,750 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 29 [2020-08-22 16:43:23,234 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2020-08-22 16:43:23,352 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-08-22 16:43:23,407 INFO L268 CegarLoopResult]: For program point my_mallocFINAL(lines 878 880) no Hoare annotation was computed. [2020-08-22 16:43:23,408 INFO L264 CegarLoopResult]: At program point L879(line 879) the Hoare annotation is: (let ((.cse0 (and (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~guard_malloc_counter~0.base 0) (= my_malloc_~size 8))) (.cse1 (not (= |my_malloc_#in~size| 8))) (.cse2 (not (= |old(~guard_malloc_counter~0.base)| 0)))) (and (or (not (<= 1 |old(~guard_malloc_counter~0.offset)|)) .cse0 (not (<= ~elem~0.offset 0)) .cse1 .cse2) (or .cse0 .cse1 .cse2 (not (= ~elem~0.offset 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))))) [2020-08-22 16:43:23,408 INFO L268 CegarLoopResult]: For program point L879-1(line 879) no Hoare annotation was computed. [2020-08-22 16:43:23,408 INFO L264 CegarLoopResult]: At program point my_mallocENTRY(lines 878 880) the Hoare annotation is: (let ((.cse0 (not (= |my_malloc_#in~size| 8))) (.cse1 (not (= |old(~guard_malloc_counter~0.base)| 0))) (.cse2 (and (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~guard_malloc_counter~0.base 0)))) (and (or (not (<= 1 |old(~guard_malloc_counter~0.offset)|)) (not (<= ~elem~0.offset 0)) .cse0 .cse1 .cse2) (or .cse0 .cse1 (not (= ~elem~0.offset 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) .cse2))) [2020-08-22 16:43:23,409 INFO L268 CegarLoopResult]: For program point my_mallocEXIT(lines 878 880) no Hoare annotation was computed. [2020-08-22 16:43:23,409 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-22 16:43:23,409 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= |old(#NULL.base)| |#NULL.base|) (= |old(~#head~0.base)| |~#head~0.base|) (= |old(#length)| |#length|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |~#head~0.offset| |old(~#head~0.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(~elem~0.base)| ~elem~0.base) (= |old(#valid)| |#valid|) (= |old(~elem~0.offset)| ~elem~0.offset)) [2020-08-22 16:43:23,410 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:43:23,410 INFO L268 CegarLoopResult]: For program point L896(lines 896 897) no Hoare annotation was computed. [2020-08-22 16:43:23,410 INFO L268 CegarLoopResult]: For program point L896-2(lines 895 898) no Hoare annotation was computed. [2020-08-22 16:43:23,410 INFO L268 CegarLoopResult]: For program point list_delEXIT(lines 895 898) no Hoare annotation was computed. [2020-08-22 16:43:23,410 INFO L264 CegarLoopResult]: At program point list_delENTRY(lines 895 898) the Hoare annotation is: (let ((.cse0 (and (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset)))) (and (or (not (= ~guard_malloc_counter~0.base 0)) .cse0 (not (<= 0 ~guard_malloc_counter~0.offset))) (or (not (<= 1 ~guard_malloc_counter~0.offset)) (not (<= |old(~elem~0.offset)| 0)) .cse0))) [2020-08-22 16:43:23,411 INFO L264 CegarLoopResult]: At program point list_addENTRY(lines 889 893) the Hoare annotation is: (let ((.cse1 (not (= ~guard_malloc_counter~0.base 0))) (.cse0 (not (<= 1 ~guard_malloc_counter~0.offset))) (.cse2 (and (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset)))) (and (or .cse0 .cse1 (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|)) .cse2) (or (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|)) .cse1 .cse2 (not (<= 0 ~guard_malloc_counter~0.offset))) (or .cse0 (not (<= 2 |list_add_#in~new.offset|)) (not (<= |old(~elem~0.offset)| 0)) .cse2))) [2020-08-22 16:43:23,411 INFO L268 CegarLoopResult]: For program point L891(lines 891 892) no Hoare annotation was computed. [2020-08-22 16:43:23,411 INFO L268 CegarLoopResult]: For program point L890(line 890) no Hoare annotation was computed. [2020-08-22 16:43:23,411 INFO L268 CegarLoopResult]: For program point L891-2(lines 889 893) no Hoare annotation was computed. [2020-08-22 16:43:23,411 INFO L264 CegarLoopResult]: At program point L890-2(line 890) the Hoare annotation is: (let ((.cse0 (not (<= 1 ~guard_malloc_counter~0.offset))) (.cse1 (not (= ~guard_malloc_counter~0.base 0)))) (and (or .cse0 (not (<= 2 |list_add_#in~new.offset|)) (not (<= |old(~elem~0.offset)| 0))) (or (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|)) .cse1 (not (<= 0 ~guard_malloc_counter~0.offset))) (or .cse0 .cse1 (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|))))) [2020-08-22 16:43:23,411 INFO L268 CegarLoopResult]: For program point L890-3(line 890) no Hoare annotation was computed. [2020-08-22 16:43:23,411 INFO L268 CegarLoopResult]: For program point list_addEXIT(lines 889 893) no Hoare annotation was computed. [2020-08-22 16:43:23,412 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-08-22 16:43:23,412 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2020-08-22 16:43:23,412 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2020-08-22 16:43:23,412 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-08-22 16:43:23,412 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:43:23,412 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= ~guard_malloc_counter~0.base 0) (= ~elem~0.offset 0) (<= 0 ~guard_malloc_counter~0.offset)) [2020-08-22 16:43:23,412 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 16:43:23,412 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 16:43:23,413 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 902 917) the Hoare annotation is: (or (and (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~guard_malloc_counter~0.base 0) (= ~elem~0.offset 0) (= |old(~elem~0.base)| ~elem~0.base)) (not (= |old(~guard_malloc_counter~0.base)| 0)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))) [2020-08-22 16:43:23,413 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 902 917) no Hoare annotation was computed. [2020-08-22 16:43:23,413 INFO L264 CegarLoopResult]: At program point L909(line 909) the Hoare annotation is: (let ((.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset))) (or (and .cse0 (= ~guard_malloc_counter~0.base 0) (<= (+ ~elem~0.offset 1) main_~dev2~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset)) (not (= |old(~guard_malloc_counter~0.base)| 0)) (and (<= ~elem~0.offset 0) .cse0 (<= 2 main_~dev2~0.offset)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)))) [2020-08-22 16:43:23,413 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 902 917) no Hoare annotation was computed. [2020-08-22 16:43:23,413 INFO L264 CegarLoopResult]: At program point L908(line 908) the Hoare annotation is: (let ((.cse0 (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|)) (.cse2 (= ~guard_malloc_counter~0.base 0)) (.cse4 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse5 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset)) (.cse1 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset)) (.cse3 (<= 2 main_~dev2~0.offset))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= main_~dev2~0.base ~elem~0.base) (= main_~dev2~0.offset ~elem~0.offset) .cse5) (and .cse0 .cse1 .cse2 (<= (+ ~elem~0.offset 1) main_~dev2~0.offset) .cse4 .cse5) (not (= |old(~guard_malloc_counter~0.base)| 0)) (and (<= ~elem~0.offset 0) .cse1 .cse3) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)))) [2020-08-22 16:43:23,413 INFO L264 CegarLoopResult]: At program point L907(line 907) the Hoare annotation is: (or (not (= |old(~guard_malloc_counter~0.base)| 0)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset) (= ~guard_malloc_counter~0.base 0) (<= 1 main_~dev1~0.offset) (= ~elem~0.offset 0) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (= |old(~elem~0.base)| ~elem~0.base) (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset))) [2020-08-22 16:43:23,414 INFO L268 CegarLoopResult]: For program point L906(lines 906 915) no Hoare annotation was computed. [2020-08-22 16:43:23,414 INFO L264 CegarLoopResult]: At program point L907-1(line 907) the Hoare annotation is: (let ((.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset)) (.cse1 (= ~guard_malloc_counter~0.base 0)) (.cse2 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse3 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset))) (or (and .cse0 .cse1 (<= 2 main_~dev2~0.offset) .cse2 (= main_~dev2~0.base ~elem~0.base) (= main_~dev2~0.offset ~elem~0.offset) .cse3) (not (= |old(~guard_malloc_counter~0.base)| 0)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and .cse0 .cse1 (<= 1 main_~dev1~0.offset) (= ~elem~0.offset 0) .cse2 (= |old(~elem~0.base)| ~elem~0.base) .cse3))) [2020-08-22 16:43:23,414 INFO L264 CegarLoopResult]: At program point L905(line 905) the Hoare annotation is: (let ((.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset)) (.cse1 (= ~guard_malloc_counter~0.base 0)) (.cse2 (= |old(~elem~0.base)| ~elem~0.base))) (or (and .cse0 .cse1 (<= 1 main_~dev1~0.offset) (= ~elem~0.offset 0) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) .cse2) (and (= main_~dev1~0.base 0) .cse0 (= main_~dev1~0.offset 0) .cse1 .cse2 (= |old(~elem~0.offset)| ~elem~0.offset)) (not (= |old(~guard_malloc_counter~0.base)| 0)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)))) [2020-08-22 16:43:23,414 INFO L268 CegarLoopResult]: For program point L906-1(lines 906 915) no Hoare annotation was computed. [2020-08-22 16:43:23,414 INFO L264 CegarLoopResult]: At program point L904(line 904) the Hoare annotation is: (or (and (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~guard_malloc_counter~0.base 0) (= ~elem~0.offset 0) (= |old(~elem~0.base)| ~elem~0.base)) (not (= |old(~guard_malloc_counter~0.base)| 0)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))) [2020-08-22 16:43:23,414 INFO L268 CegarLoopResult]: For program point L905-1(line 905) no Hoare annotation was computed. [2020-08-22 16:43:23,414 INFO L268 CegarLoopResult]: For program point L904-1(line 904) no Hoare annotation was computed. [2020-08-22 16:43:23,414 INFO L264 CegarLoopResult]: At program point __getMemoryENTRY(lines 869 876) the Hoare annotation is: (or (not (= |__getMemory_#in~size| 8)) (not (= |old(~guard_malloc_counter~0.base)| 0)) (not (= ~elem~0.offset 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~guard_malloc_counter~0.base 0))) [2020-08-22 16:43:23,415 INFO L268 CegarLoopResult]: For program point __getMemoryEXIT(lines 869 876) no Hoare annotation was computed. [2020-08-22 16:43:23,415 INFO L268 CegarLoopResult]: For program point __getMemoryFINAL(lines 869 876) no Hoare annotation was computed. [2020-08-22 16:43:23,415 INFO L268 CegarLoopResult]: For program point L873(lines 873 874) no Hoare annotation was computed. [2020-08-22 16:43:23,415 INFO L268 CegarLoopResult]: For program point L871(line 871) no Hoare annotation was computed. [2020-08-22 16:43:23,415 INFO L264 CegarLoopResult]: At program point L871-2(line 871) the Hoare annotation is: (or (not (= |__getMemory_#in~size| 8)) (not (= |old(~guard_malloc_counter~0.base)| 0)) (not (= ~elem~0.offset 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))) [2020-08-22 16:43:23,415 INFO L268 CegarLoopResult]: For program point L871-3(line 871) no Hoare annotation was computed. [2020-08-22 16:43:23,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:43:23 BoogieIcfgContainer [2020-08-22 16:43:23,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:43:23,422 INFO L168 Benchmark]: Toolchain (without parser) took 22707.24 ms. Allocated memory was 143.1 MB in the beginning and 439.9 MB in the end (delta: 296.7 MB). Free memory was 99.8 MB in the beginning and 184.5 MB in the end (delta: -84.7 MB). Peak memory consumption was 285.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:43:23,423 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 143.1 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 16:43:23,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 666.54 ms. Allocated memory was 143.1 MB in the beginning and 203.9 MB in the end (delta: 60.8 MB). Free memory was 99.3 MB in the beginning and 166.9 MB in the end (delta: -67.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:43:23,424 INFO L168 Benchmark]: Boogie Preprocessor took 62.20 ms. Allocated memory is still 203.9 MB. Free memory was 166.9 MB in the beginning and 164.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:43:23,425 INFO L168 Benchmark]: RCFGBuilder took 622.76 ms. Allocated memory is still 203.9 MB. Free memory was 164.2 MB in the beginning and 118.6 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:43:23,426 INFO L168 Benchmark]: TraceAbstraction took 21350.56 ms. Allocated memory was 203.9 MB in the beginning and 439.9 MB in the end (delta: 235.9 MB). Free memory was 118.0 MB in the beginning and 184.5 MB in the end (delta: -66.5 MB). Peak memory consumption was 243.0 MB. Max. memory is 7.1 GB. [2020-08-22 16:43:23,432 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 143.1 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 666.54 ms. Allocated memory was 143.1 MB in the beginning and 203.9 MB in the end (delta: 60.8 MB). Free memory was 99.3 MB in the beginning and 166.9 MB in the end (delta: -67.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.20 ms. Allocated memory is still 203.9 MB. Free memory was 166.9 MB in the beginning and 164.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 622.76 ms. Allocated memory is still 203.9 MB. Free memory was 164.2 MB in the beginning and 118.6 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 21350.56 ms. Allocated memory was 203.9 MB in the beginning and 439.9 MB in the end (delta: 235.9 MB). Free memory was 118.0 MB in the beginning and 184.5 MB in the end (delta: -66.5 MB). Peak memory consumption was 243.0 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. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 19.6s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 9.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 387 SDtfs, 660 SDslu, 1183 SDs, 0 SdLazy, 6446 SolverSat, 692 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 828 GetRequests, 483 SyntacticMatches, 6 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1890 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=4, 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, 11 MinimizatonAttempts, 49 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 76 PreInvPairs, 87 NumberOfFragments, 667 HoareAnnotationTreeSize, 76 FomulaSimplifications, 3422 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 18 FomulaSimplificationsInter, 1891 FormulaSimplificationTreeSizeReductionInter, 1.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 943 NumberOfCodeBlocks, 943 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 923 ConstructedInterpolants, 0 QuantifiedInterpolants, 183362 SizeOfPredicates, 57 NumberOfNonLiveVariables, 2559 ConjunctsInSsa, 233 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 199/305 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...