java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:08:26,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:08:26,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:08:26,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:08:26,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:08:26,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:08:26,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:08:26,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:08:26,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:08:26,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:08:26,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:08:26,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:08:26,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:08:26,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:08:26,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:08:26,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:08:26,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:08:26,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:08:26,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:08:26,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:08:26,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:08:26,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:08:26,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:08:26,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:08:26,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:08:26,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:08:26,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:08:26,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:08:26,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:08:26,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:08:26,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:08:26,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:08:26,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:08:26,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:08:26,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:08:26,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:08:26,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:08:26,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:08:26,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:08:26,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:08:26,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:08:26,674 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:08:26,692 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:08:26,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:08:26,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:08:26,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:08:26,695 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:08:26,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:08:26,696 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:08:26,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:08:26,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:08:26,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:08:26,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:08:26,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:08:26,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:08:26,698 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:08:26,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:08:26,699 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:08:26,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:08:26,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:08:26,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:08:26,700 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:08:26,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:08:26,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:08:26,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:08:26,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:08:26,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:08:26,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:08:26,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:08:26,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:08:26,702 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:08:26,972 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:08:26,991 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:08:26,995 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:08:26,997 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:08:26,997 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:08:26,998 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i [2019-10-14 23:08:27,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/924424eab/912a34ef79884322add074b79bab9a6d/FLAG95c0ad897 [2019-10-14 23:08:27,624 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:08:27,625 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.i [2019-10-14 23:08:27,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/924424eab/912a34ef79884322add074b79bab9a6d/FLAG95c0ad897 [2019-10-14 23:08:27,909 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/924424eab/912a34ef79884322add074b79bab9a6d [2019-10-14 23:08:27,919 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:08:27,921 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:08:27,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:08:27,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:08:27,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:08:27,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:08:27" (1/1) ... [2019-10-14 23:08:27,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c6fc6e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:27, skipping insertion in model container [2019-10-14 23:08:27,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:08:27" (1/1) ... [2019-10-14 23:08:27,940 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:08:27,985 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:08:28,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:08:28,408 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:08:28,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:08:28,528 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:08:28,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:28 WrapperNode [2019-10-14 23:08:28,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:08:28,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:08:28,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:08:28,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:08:28,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:28" (1/1) ... [2019-10-14 23:08:28,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:28" (1/1) ... [2019-10-14 23:08:28,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:28" (1/1) ... [2019-10-14 23:08:28,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:28" (1/1) ... [2019-10-14 23:08:28,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:28" (1/1) ... [2019-10-14 23:08:28,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:28" (1/1) ... [2019-10-14 23:08:28,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:28" (1/1) ... [2019-10-14 23:08:28,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:08:28,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:08:28,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:08:28,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:08:28,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:08:28,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:08:28,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:08:28,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2019-10-14 23:08:28,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2019-10-14 23:08:28,657 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2019-10-14 23:08:28,657 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2019-10-14 23:08:28,657 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2019-10-14 23:08:28,658 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:08:28,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:08:28,658 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2019-10-14 23:08:28,658 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2019-10-14 23:08:28,658 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2019-10-14 23:08:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2019-10-14 23:08:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2019-10-14 23:08:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2019-10-14 23:08:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2019-10-14 23:08:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2019-10-14 23:08:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2019-10-14 23:08:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2019-10-14 23:08:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2019-10-14 23:08:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2019-10-14 23:08:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2019-10-14 23:08:28,663 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2019-10-14 23:08:28,663 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2019-10-14 23:08:28,663 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2019-10-14 23:08:28,663 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2019-10-14 23:08:28,663 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2019-10-14 23:08:28,664 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2019-10-14 23:08:28,664 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2019-10-14 23:08:28,664 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2019-10-14 23:08:28,664 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2019-10-14 23:08:28,664 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2019-10-14 23:08:28,664 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2019-10-14 23:08:28,664 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2019-10-14 23:08:28,665 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2019-10-14 23:08:28,665 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2019-10-14 23:08:28,665 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2019-10-14 23:08:28,665 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2019-10-14 23:08:28,665 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-10-14 23:08:28,665 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2019-10-14 23:08:28,665 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2019-10-14 23:08:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2019-10-14 23:08:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2019-10-14 23:08:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2019-10-14 23:08:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2019-10-14 23:08:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2019-10-14 23:08:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2019-10-14 23:08:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2019-10-14 23:08:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:08:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2019-10-14 23:08:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2019-10-14 23:08:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2019-10-14 23:08:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2019-10-14 23:08:28,667 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2019-10-14 23:08:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2019-10-14 23:08:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2019-10-14 23:08:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2019-10-14 23:08:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2019-10-14 23:08:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2019-10-14 23:08:28,668 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2019-10-14 23:08:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2019-10-14 23:08:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2019-10-14 23:08:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2019-10-14 23:08:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2019-10-14 23:08:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2019-10-14 23:08:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2019-10-14 23:08:28,669 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2019-10-14 23:08:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2019-10-14 23:08:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2019-10-14 23:08:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2019-10-14 23:08:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2019-10-14 23:08:28,670 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2019-10-14 23:08:28,671 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2019-10-14 23:08:28,671 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2019-10-14 23:08:28,671 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2019-10-14 23:08:28,671 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2019-10-14 23:08:28,671 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2019-10-14 23:08:28,671 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2019-10-14 23:08:28,671 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2019-10-14 23:08:28,672 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2019-10-14 23:08:28,672 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2019-10-14 23:08:28,672 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2019-10-14 23:08:28,672 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2019-10-14 23:08:28,672 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-14 23:08:28,672 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2019-10-14 23:08:28,673 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2019-10-14 23:08:28,673 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2019-10-14 23:08:28,673 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2019-10-14 23:08:28,673 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2019-10-14 23:08:28,673 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2019-10-14 23:08:28,673 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2019-10-14 23:08:28,674 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2019-10-14 23:08:28,674 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2019-10-14 23:08:28,674 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2019-10-14 23:08:28,674 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2019-10-14 23:08:28,674 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2019-10-14 23:08:28,674 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2019-10-14 23:08:28,674 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2019-10-14 23:08:28,675 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2019-10-14 23:08:28,675 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2019-10-14 23:08:28,675 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2019-10-14 23:08:28,675 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2019-10-14 23:08:28,675 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2019-10-14 23:08:28,675 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2019-10-14 23:08:28,676 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2019-10-14 23:08:28,676 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2019-10-14 23:08:28,676 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2019-10-14 23:08:28,676 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2019-10-14 23:08:28,676 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2019-10-14 23:08:28,676 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2019-10-14 23:08:28,676 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2019-10-14 23:08:28,677 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:08:28,677 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-14 23:08:28,677 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-14 23:08:28,677 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:08:28,677 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-14 23:08:28,677 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2019-10-14 23:08:28,677 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-14 23:08:28,678 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2019-10-14 23:08:28,678 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2019-10-14 23:08:28,678 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2019-10-14 23:08:28,678 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2019-10-14 23:08:28,678 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2019-10-14 23:08:28,678 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2019-10-14 23:08:28,679 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2019-10-14 23:08:28,679 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2019-10-14 23:08:28,679 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2019-10-14 23:08:28,679 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2019-10-14 23:08:28,679 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2019-10-14 23:08:28,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:08:28,679 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2019-10-14 23:08:28,680 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2019-10-14 23:08:28,680 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2019-10-14 23:08:28,680 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2019-10-14 23:08:28,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:08:28,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:08:28,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:08:28,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-14 23:08:28,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:08:28,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:08:28,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:08:28,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:08:29,234 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:08:29,234 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 23:08:29,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:08:29 BoogieIcfgContainer [2019-10-14 23:08:29,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:08:29,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:08:29,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:08:29,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:08:29,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:08:27" (1/3) ... [2019-10-14 23:08:29,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c0c461e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:08:29, skipping insertion in model container [2019-10-14 23:08:29,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:28" (2/3) ... [2019-10-14 23:08:29,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c0c461e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:08:29, skipping insertion in model container [2019-10-14 23:08:29,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:08:29" (3/3) ... [2019-10-14 23:08:29,245 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.i [2019-10-14 23:08:29,255 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:08:29,264 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:08:29,277 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:08:29,304 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:08:29,304 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:08:29,305 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:08:29,305 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:08:29,305 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:08:29,305 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:08:29,305 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:08:29,306 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:08:29,326 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2019-10-14 23:08:29,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-14 23:08:29,332 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:29,333 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:29,335 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:29,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:29,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1135050545, now seen corresponding path program 1 times [2019-10-14 23:08:29,351 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:29,351 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390150516] [2019-10-14 23:08:29,352 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:29,352 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:29,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:29,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:08:29,691 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390150516] [2019-10-14 23:08:29,693 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:08:29,693 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:08:29,693 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965637860] [2019-10-14 23:08:29,698 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:08:29,699 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:29,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:08:29,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:08:29,714 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 7 states. [2019-10-14 23:08:30,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:30,173 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2019-10-14 23:08:30,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:08:30,175 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-10-14 23:08:30,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:30,187 INFO L225 Difference]: With dead ends: 88 [2019-10-14 23:08:30,187 INFO L226 Difference]: Without dead ends: 43 [2019-10-14 23:08:30,191 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:08:30,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-14 23:08:30,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2019-10-14 23:08:30,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-14 23:08:30,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2019-10-14 23:08:30,259 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 13 [2019-10-14 23:08:30,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:30,260 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2019-10-14 23:08:30,260 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:08:30,260 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2019-10-14 23:08:30,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-14 23:08:30,264 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:30,266 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:30,266 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:30,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:30,268 INFO L82 PathProgramCache]: Analyzing trace with hash -925661111, now seen corresponding path program 1 times [2019-10-14 23:08:30,269 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:30,269 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725655097] [2019-10-14 23:08:30,269 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:30,269 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:30,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:30,687 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:08:30,687 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725655097] [2019-10-14 23:08:30,687 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:08:30,688 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:08:30,688 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820475163] [2019-10-14 23:08:30,690 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:08:30,690 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:30,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:08:30,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:08:30,691 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 9 states. [2019-10-14 23:08:30,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:30,931 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2019-10-14 23:08:30,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:08:30,932 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2019-10-14 23:08:30,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:30,934 INFO L225 Difference]: With dead ends: 67 [2019-10-14 23:08:30,934 INFO L226 Difference]: Without dead ends: 48 [2019-10-14 23:08:30,936 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:08:30,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-14 23:08:30,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2019-10-14 23:08:30,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-14 23:08:30,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2019-10-14 23:08:30,949 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 38 [2019-10-14 23:08:30,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:30,949 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2019-10-14 23:08:30,950 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:08:30,950 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2019-10-14 23:08:30,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-14 23:08:30,951 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:30,951 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:30,952 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:30,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:30,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1219064118, now seen corresponding path program 1 times [2019-10-14 23:08:30,952 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:30,953 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589902458] [2019-10-14 23:08:30,953 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:30,953 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:30,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:31,233 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:08:31,233 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589902458] [2019-10-14 23:08:31,234 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719360969] [2019-10-14 23:08:31,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:31,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 26 conjunts are in the unsatisfiable core [2019-10-14 23:08:31,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:08:31,695 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:08:31,696 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:08:31,696 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [9] total 20 [2019-10-14 23:08:31,696 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7558322] [2019-10-14 23:08:31,697 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-14 23:08:31,697 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:31,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-14 23:08:31,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:08:31,698 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 13 states. [2019-10-14 23:08:32,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:32,215 INFO L93 Difference]: Finished difference Result 76 states and 87 transitions. [2019-10-14 23:08:32,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-14 23:08:32,215 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2019-10-14 23:08:32,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:32,218 INFO L225 Difference]: With dead ends: 76 [2019-10-14 23:08:32,218 INFO L226 Difference]: Without dead ends: 65 [2019-10-14 23:08:32,219 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2019-10-14 23:08:32,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-10-14 23:08:32,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2019-10-14 23:08:32,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-10-14 23:08:32,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2019-10-14 23:08:32,233 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 38 [2019-10-14 23:08:32,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:32,233 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2019-10-14 23:08:32,233 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-14 23:08:32,234 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2019-10-14 23:08:32,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-14 23:08:32,235 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:32,235 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:32,441 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:32,442 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:32,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:32,442 INFO L82 PathProgramCache]: Analyzing trace with hash -775693011, now seen corresponding path program 1 times [2019-10-14 23:08:32,443 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:32,443 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074424092] [2019-10-14 23:08:32,443 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:32,444 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:32,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:08:32,690 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074424092] [2019-10-14 23:08:32,691 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447964895] [2019-10-14 23:08:32,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:32,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 31 conjunts are in the unsatisfiable core [2019-10-14 23:08:32,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:08:33,250 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:08:33,251 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:08:33,251 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 20] total 28 [2019-10-14 23:08:33,251 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658233182] [2019-10-14 23:08:33,252 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-10-14 23:08:33,252 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:33,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-10-14 23:08:33,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-14 23:08:33,253 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 28 states. [2019-10-14 23:08:34,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:34,704 INFO L93 Difference]: Finished difference Result 93 states and 109 transitions. [2019-10-14 23:08:34,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-14 23:08:34,705 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 45 [2019-10-14 23:08:34,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:34,706 INFO L225 Difference]: With dead ends: 93 [2019-10-14 23:08:34,706 INFO L226 Difference]: Without dead ends: 56 [2019-10-14 23:08:34,708 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=230, Invalid=1750, Unknown=0, NotChecked=0, Total=1980 [2019-10-14 23:08:34,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-10-14 23:08:34,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2019-10-14 23:08:34,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-10-14 23:08:34,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2019-10-14 23:08:34,724 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 45 [2019-10-14 23:08:34,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:34,725 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2019-10-14 23:08:34,725 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-10-14 23:08:34,725 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2019-10-14 23:08:34,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-14 23:08:34,726 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:34,726 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:34,927 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:34,928 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:34,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:34,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1335597358, now seen corresponding path program 1 times [2019-10-14 23:08:34,929 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:34,929 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570380465] [2019-10-14 23:08:34,929 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:34,930 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:34,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 23:08:35,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570380465] [2019-10-14 23:08:35,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994586519] [2019-10-14 23:08:35,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:35,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-14 23:08:35,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:08:35,797 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:08:35,799 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:08:35,799 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 29 [2019-10-14 23:08:35,799 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355021443] [2019-10-14 23:08:35,800 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-10-14 23:08:35,800 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:35,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-10-14 23:08:35,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2019-10-14 23:08:35,801 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 29 states. [2019-10-14 23:08:37,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:37,120 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2019-10-14 23:08:37,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-14 23:08:37,121 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 45 [2019-10-14 23:08:37,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:37,123 INFO L225 Difference]: With dead ends: 65 [2019-10-14 23:08:37,123 INFO L226 Difference]: Without dead ends: 58 [2019-10-14 23:08:37,125 INFO L600 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 [2019-10-14 23:08:37,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-10-14 23:08:37,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2019-10-14 23:08:37,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-10-14 23:08:37,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2019-10-14 23:08:37,135 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 45 [2019-10-14 23:08:37,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:37,135 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2019-10-14 23:08:37,136 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-10-14 23:08:37,136 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2019-10-14 23:08:37,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-14 23:08:37,137 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:37,137 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:37,341 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:37,342 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:37,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:37,342 INFO L82 PathProgramCache]: Analyzing trace with hash 526250732, now seen corresponding path program 1 times [2019-10-14 23:08:37,342 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:37,342 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641680554] [2019-10-14 23:08:37,342 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:37,343 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:37,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:37,647 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-14 23:08:37,648 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641680554] [2019-10-14 23:08:37,648 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212688381] [2019-10-14 23:08:37,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:37,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-14 23:08:37,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:08:38,096 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:08:38,096 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:08:38,096 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 28 [2019-10-14 23:08:38,096 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977375339] [2019-10-14 23:08:38,097 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-10-14 23:08:38,097 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:38,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-10-14 23:08:38,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2019-10-14 23:08:38,098 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 28 states. [2019-10-14 23:08:39,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:39,299 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2019-10-14 23:08:39,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-14 23:08:39,300 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 45 [2019-10-14 23:08:39,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:39,301 INFO L225 Difference]: With dead ends: 70 [2019-10-14 23:08:39,301 INFO L226 Difference]: Without dead ends: 67 [2019-10-14 23:08:39,303 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=250, Invalid=1310, Unknown=0, NotChecked=0, Total=1560 [2019-10-14 23:08:39,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-10-14 23:08:39,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 54. [2019-10-14 23:08:39,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-10-14 23:08:39,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2019-10-14 23:08:39,321 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 45 [2019-10-14 23:08:39,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:39,322 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2019-10-14 23:08:39,322 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-10-14 23:08:39,322 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2019-10-14 23:08:39,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:08:39,324 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:39,324 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:39,532 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:39,533 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:39,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:39,534 INFO L82 PathProgramCache]: Analyzing trace with hash -2119488644, now seen corresponding path program 1 times [2019-10-14 23:08:39,534 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:39,535 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988020162] [2019-10-14 23:08:39,535 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:39,535 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:39,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:39,891 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-14 23:08:39,892 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988020162] [2019-10-14 23:08:39,893 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712641570] [2019-10-14 23:08:39,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:40,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-14 23:08:40,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:08:40,478 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:08:40,478 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:08:40,479 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 35 [2019-10-14 23:08:40,479 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209242611] [2019-10-14 23:08:40,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-10-14 23:08:40,480 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:40,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-10-14 23:08:40,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1097, Unknown=0, NotChecked=0, Total=1190 [2019-10-14 23:08:40,482 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 35 states. [2019-10-14 23:08:42,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:42,275 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2019-10-14 23:08:42,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-10-14 23:08:42,275 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 57 [2019-10-14 23:08:42,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:42,278 INFO L225 Difference]: With dead ends: 74 [2019-10-14 23:08:42,278 INFO L226 Difference]: Without dead ends: 63 [2019-10-14 23:08:42,280 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=369, Invalid=3053, Unknown=0, NotChecked=0, Total=3422 [2019-10-14 23:08:42,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-10-14 23:08:42,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2019-10-14 23:08:42,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-10-14 23:08:42,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2019-10-14 23:08:42,289 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 57 [2019-10-14 23:08:42,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:42,290 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2019-10-14 23:08:42,290 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-10-14 23:08:42,290 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2019-10-14 23:08:42,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:08:42,291 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:42,292 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:42,495 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:42,496 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:42,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:42,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1366132026, now seen corresponding path program 1 times [2019-10-14 23:08:42,497 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:42,498 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438459822] [2019-10-14 23:08:42,498 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:42,498 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:42,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:42,928 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:08:42,928 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438459822] [2019-10-14 23:08:42,928 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069911157] [2019-10-14 23:08:42,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:43,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 25 conjunts are in the unsatisfiable core [2019-10-14 23:08:43,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:08:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:08:43,290 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:08:43,291 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20] total 31 [2019-10-14 23:08:43,291 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169295081] [2019-10-14 23:08:43,291 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-10-14 23:08:43,291 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:43,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-10-14 23:08:43,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2019-10-14 23:08:43,292 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 31 states. [2019-10-14 23:08:44,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:44,398 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2019-10-14 23:08:44,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-14 23:08:44,399 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 57 [2019-10-14 23:08:44,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:44,400 INFO L225 Difference]: With dead ends: 61 [2019-10-14 23:08:44,401 INFO L226 Difference]: Without dead ends: 47 [2019-10-14 23:08:44,402 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=243, Invalid=1827, Unknown=0, NotChecked=0, Total=2070 [2019-10-14 23:08:44,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-10-14 23:08:44,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-10-14 23:08:44,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-10-14 23:08:44,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2019-10-14 23:08:44,409 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 57 [2019-10-14 23:08:44,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:44,409 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2019-10-14 23:08:44,409 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-10-14 23:08:44,410 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2019-10-14 23:08:44,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:08:44,410 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:44,411 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:44,620 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:44,621 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:44,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:44,621 INFO L82 PathProgramCache]: Analyzing trace with hash 779326012, now seen corresponding path program 1 times [2019-10-14 23:08:44,622 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:44,622 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704574906] [2019-10-14 23:08:44,622 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:44,623 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:44,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:44,807 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-14 23:08:44,808 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704574906] [2019-10-14 23:08:44,808 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451510700] [2019-10-14 23:08:44,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:44,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 37 conjunts are in the unsatisfiable core [2019-10-14 23:08:44,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:08:45,006 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-14 23:08:45,006 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:08:45,006 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 11 [2019-10-14 23:08:45,006 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071382605] [2019-10-14 23:08:45,009 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 23:08:45,010 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:45,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 23:08:45,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:08:45,010 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 11 states. [2019-10-14 23:08:45,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:45,344 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2019-10-14 23:08:45,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:08:45,345 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2019-10-14 23:08:45,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:45,345 INFO L225 Difference]: With dead ends: 47 [2019-10-14 23:08:45,346 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:08:45,347 INFO L600 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 [2019-10-14 23:08:45,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:08:45,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:08:45,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:08:45,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:08:45,348 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2019-10-14 23:08:45,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:45,349 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:08:45,349 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 23:08:45,349 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:08:45,349 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:08:45,549 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:45,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:08:45,849 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 21 [2019-10-14 23:08:46,075 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 30 [2019-10-14 23:08:46,301 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 28 [2019-10-14 23:08:46,771 INFO L443 ceAbstractionStarter]: For program point my_mallocFINAL(lines 878 880) no Hoare annotation was computed. [2019-10-14 23:08:46,772 INFO L439 ceAbstractionStarter]: At program point L879(line 879) the Hoare annotation is: (let ((.cse3 (not (= |my_malloc_#in~size| 8))) (.cse1 (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|)) (.cse2 (= my_malloc_~size 8)) (.cse0 (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|))) (and (or (not (<= 1 |old(~guard_malloc_counter~0.offset)|)) (not (<= ~elem~0.offset 0)) (and .cse0 .cse1 .cse2) .cse3) (or (or (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) .cse3) (not (= ~elem~0.offset 0))) (and .cse1 .cse2 .cse0)))) [2019-10-14 23:08:46,772 INFO L443 ceAbstractionStarter]: For program point L879-1(line 879) no Hoare annotation was computed. [2019-10-14 23:08:46,772 INFO L439 ceAbstractionStarter]: At program point my_mallocENTRY(lines 878 880) the Hoare annotation is: (let ((.cse2 (not (= |my_malloc_#in~size| 8))) (.cse1 (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|)) (.cse0 (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|))) (and (or (not (<= 1 |old(~guard_malloc_counter~0.offset)|)) (and .cse0 .cse1) (not (<= ~elem~0.offset 0)) .cse2) (or (or (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) .cse2) (not (= ~elem~0.offset 0))) (and .cse1 .cse0)))) [2019-10-14 23:08:46,772 INFO L443 ceAbstractionStarter]: For program point my_mallocEXIT(lines 878 880) no Hoare annotation was computed. [2019-10-14 23:08:46,773 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:08:46,773 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= ~elem~0.base |old(~elem~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |~#head~0.base| |old(~#head~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~elem~0.offset |old(~elem~0.offset)|) (= |old(#length)| |#length|) (= |~#head~0.offset| |old(~#head~0.offset)|) (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|)) [2019-10-14 23:08:46,773 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:08:46,773 INFO L443 ceAbstractionStarter]: For program point L896(lines 896 897) no Hoare annotation was computed. [2019-10-14 23:08:46,773 INFO L443 ceAbstractionStarter]: For program point L896-2(lines 895 898) no Hoare annotation was computed. [2019-10-14 23:08:46,773 INFO L443 ceAbstractionStarter]: For program point list_delEXIT(lines 895 898) no Hoare annotation was computed. [2019-10-14 23:08:46,774 INFO L439 ceAbstractionStarter]: At program point list_delENTRY(lines 895 898) the Hoare annotation is: (or (not (<= 1 ~guard_malloc_counter~0.offset)) (and (= ~elem~0.base |old(~elem~0.base)|) (= ~elem~0.offset |old(~elem~0.offset)|))) [2019-10-14 23:08:46,774 INFO L439 ceAbstractionStarter]: At program point list_addENTRY(lines 889 893) the Hoare annotation is: (let ((.cse1 (not (<= 1 ~guard_malloc_counter~0.offset))) (.cse0 (and (= ~elem~0.base |old(~elem~0.base)|) (= ~elem~0.offset |old(~elem~0.offset)|)))) (and (or .cse0 .cse1 (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|))) (or .cse1 (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|)) .cse0))) [2019-10-14 23:08:46,774 INFO L443 ceAbstractionStarter]: For program point L891(lines 891 892) no Hoare annotation was computed. [2019-10-14 23:08:46,774 INFO L443 ceAbstractionStarter]: For program point L890(line 890) no Hoare annotation was computed. [2019-10-14 23:08:46,774 INFO L443 ceAbstractionStarter]: For program point L891-2(lines 889 893) no Hoare annotation was computed. [2019-10-14 23:08:46,774 INFO L439 ceAbstractionStarter]: At program point L890-2(line 890) the Hoare annotation is: (let ((.cse0 (not (<= 1 ~guard_malloc_counter~0.offset)))) (and (or .cse0 (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|))) (or .cse0 (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|))))) [2019-10-14 23:08:46,775 INFO L443 ceAbstractionStarter]: For program point L890-3(line 890) no Hoare annotation was computed. [2019-10-14 23:08:46,775 INFO L443 ceAbstractionStarter]: For program point list_addEXIT(lines 889 893) no Hoare annotation was computed. [2019-10-14 23:08:46,775 INFO L443 ceAbstractionStarter]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2019-10-14 23:08:46,775 INFO L443 ceAbstractionStarter]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-10-14 23:08:46,775 INFO L443 ceAbstractionStarter]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2019-10-14 23:08:46,775 INFO L446 ceAbstractionStarter]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2019-10-14 23:08:46,775 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:08:46,775 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (= 0 ~guard_malloc_counter~0.offset) (= ~elem~0.offset 0)) [2019-10-14 23:08:46,775 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:08:46,775 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:08:46,776 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 902 917) the Hoare annotation is: (or (not (= |old(~elem~0.offset)| 0)) (not (= 0 |old(~guard_malloc_counter~0.offset)|)) (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~elem~0.base |old(~elem~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~elem~0.offset 0))) [2019-10-14 23:08:46,776 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 902 917) no Hoare annotation was computed. [2019-10-14 23:08:46,776 INFO L439 ceAbstractionStarter]: At program point L909(line 909) the Hoare annotation is: (let ((.cse0 (<= 1 ~guard_malloc_counter~0.offset)) (.cse1 (<= 2 main_~dev2~0.offset))) (or (not (= |old(~elem~0.offset)| 0)) (and (and (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) .cse0 .cse1 (<= (+ ~elem~0.offset 1) main_~dev2~0.offset)) (and .cse0 .cse1 (<= ~elem~0.offset 0)) (not (= 0 |old(~guard_malloc_counter~0.offset)|)))) [2019-10-14 23:08:46,776 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 902 917) no Hoare annotation was computed. [2019-10-14 23:08:46,776 INFO L439 ceAbstractionStarter]: At program point L908(line 908) the Hoare annotation is: (let ((.cse0 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset)) (.cse1 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse2 (<= 1 ~guard_malloc_counter~0.offset)) (.cse3 (<= 2 main_~dev2~0.offset))) (or (not (= |old(~elem~0.offset)| 0)) (and (= main_~dev2~0.base ~elem~0.base) .cse0 .cse1 .cse2 .cse3 (= main_~dev2~0.offset ~elem~0.offset)) (and .cse0 .cse1 .cse2 .cse3 (<= (+ ~elem~0.offset 1) main_~dev2~0.offset)) (and .cse2 .cse3 (<= ~elem~0.offset 0)) (not (= 0 |old(~guard_malloc_counter~0.offset)|)))) [2019-10-14 23:08:46,776 INFO L439 ceAbstractionStarter]: At program point L907(line 907) the Hoare annotation is: (or (not (= |old(~elem~0.offset)| 0)) (and (<= 1 main_~dev1~0.offset) (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (= ~elem~0.base |old(~elem~0.base)|) (= ~elem~0.offset 0)) (not (= 0 |old(~guard_malloc_counter~0.offset)|))) [2019-10-14 23:08:46,776 INFO L443 ceAbstractionStarter]: For program point L906(lines 906 915) no Hoare annotation was computed. [2019-10-14 23:08:46,777 INFO L439 ceAbstractionStarter]: At program point L907-1(line 907) the Hoare annotation is: (let ((.cse1 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse0 (+ main_~dev1~0.offset 1))) (or (not (= |old(~elem~0.offset)| 0)) (and (<= 1 main_~dev1~0.offset) (<= .cse0 main_~dev2~0.offset) .cse1 (= ~elem~0.base |old(~elem~0.base)|) (= ~elem~0.offset 0)) (and (= main_~dev2~0.base ~elem~0.base) .cse1 (<= .cse0 ~elem~0.offset) (<= 1 ~guard_malloc_counter~0.offset) (<= 2 main_~dev2~0.offset) (= main_~dev2~0.offset ~elem~0.offset)) (not (= 0 |old(~guard_malloc_counter~0.offset)|)))) [2019-10-14 23:08:46,777 INFO L439 ceAbstractionStarter]: At program point L905(line 905) the Hoare annotation is: (let ((.cse0 (= ~elem~0.base |old(~elem~0.base)|))) (or (not (= |old(~elem~0.offset)| 0)) (and (= 0 main_~dev1~0.base) .cse0 (<= 1 ~guard_malloc_counter~0.offset) (= main_~dev1~0.offset 0) (= ~elem~0.offset |old(~elem~0.offset)|)) (not (= 0 |old(~guard_malloc_counter~0.offset)|)) (and (<= 1 main_~dev1~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) .cse0 (= ~elem~0.offset 0)))) [2019-10-14 23:08:46,777 INFO L443 ceAbstractionStarter]: For program point L906-1(lines 906 915) no Hoare annotation was computed. [2019-10-14 23:08:46,777 INFO L439 ceAbstractionStarter]: At program point L904(line 904) the Hoare annotation is: (or (not (= |old(~elem~0.offset)| 0)) (not (= 0 |old(~guard_malloc_counter~0.offset)|)) (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~elem~0.base |old(~elem~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~elem~0.offset 0))) [2019-10-14 23:08:46,777 INFO L443 ceAbstractionStarter]: For program point L905-1(line 905) no Hoare annotation was computed. [2019-10-14 23:08:46,777 INFO L443 ceAbstractionStarter]: For program point L904-1(line 904) no Hoare annotation was computed. [2019-10-14 23:08:46,778 INFO L439 ceAbstractionStarter]: At program point __getMemoryENTRY(lines 869 876) the Hoare annotation is: (or (or (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (not (= |__getMemory_#in~size| 8))) (not (= ~elem~0.offset 0))) (and (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|))) [2019-10-14 23:08:46,778 INFO L443 ceAbstractionStarter]: For program point __getMemoryEXIT(lines 869 876) no Hoare annotation was computed. [2019-10-14 23:08:46,778 INFO L443 ceAbstractionStarter]: For program point __getMemoryFINAL(lines 869 876) no Hoare annotation was computed. [2019-10-14 23:08:46,778 INFO L443 ceAbstractionStarter]: For program point L873(lines 873 874) no Hoare annotation was computed. [2019-10-14 23:08:46,778 INFO L443 ceAbstractionStarter]: For program point L871(line 871) no Hoare annotation was computed. [2019-10-14 23:08:46,778 INFO L439 ceAbstractionStarter]: At program point L871-2(line 871) the Hoare annotation is: (or (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (not (= |__getMemory_#in~size| 8))) (not (= ~elem~0.offset 0))) [2019-10-14 23:08:46,778 INFO L443 ceAbstractionStarter]: For program point L871-3(line 871) no Hoare annotation was computed. [2019-10-14 23:08:46,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:08:46 BoogieIcfgContainer [2019-10-14 23:08:46,782 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:08:46,783 INFO L168 Benchmark]: Toolchain (without parser) took 18862.93 ms. Allocated memory was 145.8 MB in the beginning and 393.7 MB in the end (delta: 248.0 MB). Free memory was 100.9 MB in the beginning and 270.9 MB in the end (delta: -170.0 MB). Peak memory consumption was 260.2 MB. Max. memory is 7.1 GB. [2019-10-14 23:08:46,784 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-14 23:08:46,785 INFO L168 Benchmark]: CACSL2BoogieTranslator took 607.28 ms. Allocated memory was 145.8 MB in the beginning and 204.5 MB in the end (delta: 58.7 MB). Free memory was 100.7 MB in the beginning and 169.3 MB in the end (delta: -68.7 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2019-10-14 23:08:46,786 INFO L168 Benchmark]: Boogie Preprocessor took 53.93 ms. Allocated memory is still 204.5 MB. Free memory was 169.3 MB in the beginning and 166.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2019-10-14 23:08:46,787 INFO L168 Benchmark]: RCFGBuilder took 652.85 ms. Allocated memory is still 204.5 MB. Free memory was 166.1 MB in the beginning and 121.5 MB in the end (delta: 44.6 MB). Peak memory consumption was 44.6 MB. Max. memory is 7.1 GB. [2019-10-14 23:08:46,788 INFO L168 Benchmark]: TraceAbstraction took 17544.18 ms. Allocated memory was 204.5 MB in the beginning and 393.7 MB in the end (delta: 189.3 MB). Free memory was 120.9 MB in the beginning and 270.9 MB in the end (delta: -150.0 MB). Peak memory consumption was 221.5 MB. Max. memory is 7.1 GB. [2019-10-14 23:08:46,791 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 607.28 ms. Allocated memory was 145.8 MB in the beginning and 204.5 MB in the end (delta: 58.7 MB). Free memory was 100.7 MB in the beginning and 169.3 MB in the end (delta: -68.7 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.93 ms. Allocated memory is still 204.5 MB. Free memory was 169.3 MB in the beginning and 166.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 652.85 ms. Allocated memory is still 204.5 MB. Free memory was 166.1 MB in the beginning and 121.5 MB in the end (delta: 44.6 MB). Peak memory consumption was 44.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17544.18 ms. Allocated memory was 204.5 MB in the beginning and 393.7 MB in the end (delta: 189.3 MB). Free memory was 120.9 MB in the beginning and 270.9 MB in the end (delta: -150.0 MB). Peak memory consumption was 221.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 47 locations, 1 error locations. Result: SAFE, OverallTime: 17.4s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 8.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, HoareTripleCheckerStatistics: 311 SDtfs, 555 SDslu, 973 SDs, 0 SdLazy, 5318 SolverSat, 530 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 656 GetRequests, 369 SyntacticMatches, 4 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1574 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 46 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 74 PreInvPairs, 85 NumberOfFragments, 497 HoareAnnotationTreeSize, 74 FomulaSimplifications, 3380 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 18 FomulaSimplificationsInter, 1869 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 739 NumberOfCodeBlocks, 739 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 723 ConstructedInterpolants, 0 QuantifiedInterpolants, 143998 SizeOfPredicates, 49 NumberOfNonLiveVariables, 1969 ConjunctsInSsa, 188 ConjunctsInUnsatCore, 16 InterpolantComputations, 3 PerfectInterpolantSequences, 148/237 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...