/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 11:20:55,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 11:20:55,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 11:20:55,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 11:20:55,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:20:55,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:20:55,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:20:55,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:20:55,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:20:55,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:20:55,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:20:55,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:20:55,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:20:55,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:20:55,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:20:55,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:20:55,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:20:55,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:20:55,335 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:20:55,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:20:55,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:20:55,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:20:55,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:20:55,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:20:55,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 11:20:55,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 11:20:55,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 11:20:55,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 11:20:55,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 11:20:55,348 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 11:20:55,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 11:20:55,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 11:20:55,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 11:20:55,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 11:20:55,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 11:20:55,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 11:20:55,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 11:20:55,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 11:20:55,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 11:20:55,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 11:20:55,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 11:20:55,362 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 11:20:55,395 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:20:55,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:20:55,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:20:55,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:20:55,398 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:20:55,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:20:55,399 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:20:55,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:20:55,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:20:55,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:20:55,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:20:55,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:20:55,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:20:55,402 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:20:55,402 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:20:55,402 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:20:55,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:20:55,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:20:55,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:20:55,403 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:20:55,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:20:55,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:20:55,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:20:55,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:20:55,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:20:55,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:20:55,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:20:55,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:20:55,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:20:55,405 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-21 11:20:55,752 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:20:55,767 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:20:55,772 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:20:55,774 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:20:55,774 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:20:55,775 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-07-21 11:20:55,860 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4acf5b4c/ceff14947a474564a76a512fd1d0041e/FLAG2761dd35d [2020-07-21 11:20:56,536 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:20:56,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-07-21 11:20:56,550 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4acf5b4c/ceff14947a474564a76a512fd1d0041e/FLAG2761dd35d [2020-07-21 11:20:56,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4acf5b4c/ceff14947a474564a76a512fd1d0041e [2020-07-21 11:20:56,785 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:20:56,789 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:20:56,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:20:56,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:20:56,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:20:56,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:20:56" (1/1) ... [2020-07-21 11:20:56,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@793f9d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:20:56, skipping insertion in model container [2020-07-21 11:20:56,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:20:56" (1/1) ... [2020-07-21 11:20:56,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:20:56,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:20:57,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:20:57,252 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:20:57,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:20:57,544 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:20:57,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:20:57 WrapperNode [2020-07-21 11:20:57,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:20:57,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:20:57,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:20:57,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:20:57,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:20:57" (1/1) ... [2020-07-21 11:20:57,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:20:57" (1/1) ... [2020-07-21 11:20:57,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:20:57" (1/1) ... [2020-07-21 11:20:57,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:20:57" (1/1) ... [2020-07-21 11:20:57,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:20:57" (1/1) ... [2020-07-21 11:20:57,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:20:57" (1/1) ... [2020-07-21 11:20:57,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:20:57" (1/1) ... [2020-07-21 11:20:57,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:20:57,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:20:57,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:20:57,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:20:57,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:20:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:20:57,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:20:57,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:20:57,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-21 11:20:57,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-07-21 11:20:57,696 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-07-21 11:20:57,696 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-07-21 11:20:57,697 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-07-21 11:20:57,697 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:20:57,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:20:57,698 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-21 11:20:57,698 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-07-21 11:20:57,698 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-07-21 11:20:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-07-21 11:20:57,699 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-07-21 11:20:57,700 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-07-21 11:20:57,700 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-07-21 11:20:57,701 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-07-21 11:20:57,701 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-07-21 11:20:57,701 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-07-21 11:20:57,701 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-07-21 11:20:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-07-21 11:20:57,702 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-07-21 11:20:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-07-21 11:20:57,703 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-07-21 11:20:57,704 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-07-21 11:20:57,704 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-07-21 11:20:57,704 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-07-21 11:20:57,705 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-07-21 11:20:57,705 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-07-21 11:20:57,705 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-07-21 11:20:57,705 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-07-21 11:20:57,705 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-07-21 11:20:57,705 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-07-21 11:20:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-07-21 11:20:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-07-21 11:20:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-07-21 11:20:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-07-21 11:20:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-07-21 11:20:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-21 11:20:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-07-21 11:20:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-07-21 11:20:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-07-21 11:20:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-07-21 11:20:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-07-21 11:20:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-07-21 11:20:57,707 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-07-21 11:20:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-07-21 11:20:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-07-21 11:20:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 11:20:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-07-21 11:20:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-07-21 11:20:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-07-21 11:20:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-07-21 11:20:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-07-21 11:20:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-07-21 11:20:57,708 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-07-21 11:20:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-07-21 11:20:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-07-21 11:20:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-07-21 11:20:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-07-21 11:20:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-07-21 11:20:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-07-21 11:20:57,709 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-07-21 11:20:57,710 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-07-21 11:20:57,710 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-21 11:20:57,710 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-07-21 11:20:57,710 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-07-21 11:20:57,710 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-07-21 11:20:57,710 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-07-21 11:20:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-07-21 11:20:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-07-21 11:20:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-07-21 11:20:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-07-21 11:20:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-07-21 11:20:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-07-21 11:20:57,711 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-07-21 11:20:57,712 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-07-21 11:20:57,712 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-07-21 11:20:57,712 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-07-21 11:20:57,712 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-07-21 11:20:57,712 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-07-21 11:20:57,712 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-07-21 11:20:57,712 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-07-21 11:20:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-07-21 11:20:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-07-21 11:20:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-07-21 11:20:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-07-21 11:20:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-07-21 11:20:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-07-21 11:20:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-07-21 11:20:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-07-21 11:20:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-07-21 11:20:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-07-21 11:20:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-07-21 11:20:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-07-21 11:20:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-07-21 11:20:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-07-21 11:20:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-07-21 11:20:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-07-21 11:20:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-07-21 11:20:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-07-21 11:20:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-07-21 11:20:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-07-21 11:20:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-07-21 11:20:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-07-21 11:20:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-07-21 11:20:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-07-21 11:20:57,716 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-07-21 11:20:57,716 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-07-21 11:20:57,716 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-07-21 11:20:57,716 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-07-21 11:20:57,716 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 11:20:57,716 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 11:20:57,716 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 11:20:57,716 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 11:20:57,716 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 11:20:57,716 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-07-21 11:20:57,717 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 11:20:57,717 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-07-21 11:20:57,717 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-07-21 11:20:57,717 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-07-21 11:20:57,717 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-07-21 11:20:57,717 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-07-21 11:20:57,718 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-07-21 11:20:57,718 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-07-21 11:20:57,718 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-07-21 11:20:57,718 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-07-21 11:20:57,718 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-07-21 11:20:57,718 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-07-21 11:20:57,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 11:20:57,719 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-07-21 11:20:57,719 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-07-21 11:20:57,719 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-07-21 11:20:57,719 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-07-21 11:20:57,719 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:20:57,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:20:57,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 11:20:57,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-21 11:20:57,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:20:57,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 11:20:57,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 11:20:57,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 11:20:58,314 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:20:58,315 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 11:20:58,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:20:58 BoogieIcfgContainer [2020-07-21 11:20:58,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:20:58,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:20:58,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:20:58,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:20:58,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:20:56" (1/3) ... [2020-07-21 11:20:58,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606619a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:20:58, skipping insertion in model container [2020-07-21 11:20:58,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:20:57" (2/3) ... [2020-07-21 11:20:58,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606619a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:20:58, skipping insertion in model container [2020-07-21 11:20:58,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:20:58" (3/3) ... [2020-07-21 11:20:58,332 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2020-07-21 11:20:58,345 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:20:58,354 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 11:20:58,369 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 11:20:58,397 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:20:58,397 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:20:58,398 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:20:58,398 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:20:58,398 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:20:58,398 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:20:58,398 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:20:58,398 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:20:58,421 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-07-21 11:20:58,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 11:20:58,428 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:20:58,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:20:58,430 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:20:58,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:20:58,437 INFO L82 PathProgramCache]: Analyzing trace with hash -573637036, now seen corresponding path program 1 times [2020-07-21 11:20:58,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:20:58,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309535951] [2020-07-21 11:20:58,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:20:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:20:58,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:20:58,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:20:58,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:20:58,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:20:58,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309535951] [2020-07-21 11:20:58,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:20:58,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 11:20:58,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561465760] [2020-07-21 11:20:58,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 11:20:58,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:20:58,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 11:20:58,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:20:58,801 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 6 states. [2020-07-21 11:20:59,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:20:59,036 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions. [2020-07-21 11:20:59,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 11:20:59,039 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-07-21 11:20:59,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:20:59,051 INFO L225 Difference]: With dead ends: 86 [2020-07-21 11:20:59,051 INFO L226 Difference]: Without dead ends: 40 [2020-07-21 11:20:59,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-21 11:20:59,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-21 11:20:59,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-21 11:20:59,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-21 11:20:59,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-07-21 11:20:59,112 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 13 [2020-07-21 11:20:59,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:20:59,113 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-07-21 11:20:59,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 11:20:59,113 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-07-21 11:20:59,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 11:20:59,116 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:20:59,116 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:20:59,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:20:59,331 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:20:59,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:20:59,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1917870949, now seen corresponding path program 1 times [2020-07-21 11:20:59,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:20:59,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420278741] [2020-07-21 11:20:59,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:20:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:20:59,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-21 11:20:59,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:20:59,605 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-21 11:20:59,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:20:59,741 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-21 11:20:59,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420278741] [2020-07-21 11:20:59,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:20:59,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-07-21 11:20:59,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774241347] [2020-07-21 11:20:59,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 11:20:59,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:20:59,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 11:20:59,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:20:59,748 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-07-21 11:20:59,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:20:59,786 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2020-07-21 11:20:59,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 11:20:59,786 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-07-21 11:20:59,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:20:59,790 INFO L225 Difference]: With dead ends: 67 [2020-07-21 11:20:59,791 INFO L226 Difference]: Without dead ends: 45 [2020-07-21 11:20:59,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:20:59,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-07-21 11:20:59,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-07-21 11:20:59,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-07-21 11:20:59,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-07-21 11:20:59,808 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 38 [2020-07-21 11:20:59,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:20:59,810 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-07-21 11:20:59,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 11:20:59,811 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-07-21 11:20:59,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 11:20:59,814 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:20:59,815 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:21:00,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:21:00,030 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:21:00,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:21:00,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1948890756, now seen corresponding path program 1 times [2020-07-21 11:21:00,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:21:00,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197849172] [2020-07-21 11:21:00,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:21:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:21:00,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-21 11:21:00,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:21:00,283 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-21 11:21:00,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:21:00,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197849172] [2020-07-21 11:21:00,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:21:00,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 11:21:00,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270933669] [2020-07-21 11:21:00,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 11:21:00,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:21:00,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 11:21:00,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:21:00,286 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 7 states. [2020-07-21 11:21:00,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:21:00,341 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2020-07-21 11:21:00,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 11:21:00,341 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-07-21 11:21:00,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:21:00,343 INFO L225 Difference]: With dead ends: 65 [2020-07-21 11:21:00,343 INFO L226 Difference]: Without dead ends: 40 [2020-07-21 11:21:00,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:21:00,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-21 11:21:00,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-21 11:21:00,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-21 11:21:00,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-07-21 11:21:00,353 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 38 [2020-07-21 11:21:00,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:21:00,353 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-07-21 11:21:00,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 11:21:00,353 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-07-21 11:21:00,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 11:21:00,355 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:21:00,355 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:21:00,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:21:00,570 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:21:00,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:21:00,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1655487749, now seen corresponding path program 1 times [2020-07-21 11:21:00,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:21:00,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299193681] [2020-07-21 11:21:00,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:21:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:21:00,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-21 11:21:00,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:21:00,904 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-21 11:21:00,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:21:00,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299193681] [2020-07-21 11:21:00,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:21:00,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-21 11:21:00,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043835388] [2020-07-21 11:21:00,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-21 11:21:00,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:21:00,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-21 11:21:00,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-07-21 11:21:00,907 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 13 states. [2020-07-21 11:21:01,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:21:01,531 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2020-07-21 11:21:01,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-21 11:21:01,532 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-07-21 11:21:01,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:21:01,537 INFO L225 Difference]: With dead ends: 73 [2020-07-21 11:21:01,537 INFO L226 Difference]: Without dead ends: 70 [2020-07-21 11:21:01,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2020-07-21 11:21:01,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-21 11:21:01,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 60. [2020-07-21 11:21:01,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-21 11:21:01,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2020-07-21 11:21:01,563 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 38 [2020-07-21 11:21:01,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:21:01,564 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2020-07-21 11:21:01,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-21 11:21:01,564 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2020-07-21 11:21:01,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-21 11:21:01,565 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:21:01,566 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:21:01,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:21:01,780 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:21:01,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:21:01,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1321471087, now seen corresponding path program 1 times [2020-07-21 11:21:01,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:21:01,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933431718] [2020-07-21 11:21:01,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:21:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:21:01,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 11:21:01,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:21:02,198 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:21:02,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:21:02,740 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:21:02,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933431718] [2020-07-21 11:21:02,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:21:02,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 22 [2020-07-21 11:21:02,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888790635] [2020-07-21 11:21:02,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-21 11:21:02,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:21:02,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-21 11:21:02,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2020-07-21 11:21:02,744 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand 22 states. [2020-07-21 11:21:03,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:21:03,566 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2020-07-21 11:21:03,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-21 11:21:03,567 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 45 [2020-07-21 11:21:03,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:21:03,568 INFO L225 Difference]: With dead ends: 73 [2020-07-21 11:21:03,569 INFO L226 Difference]: Without dead ends: 69 [2020-07-21 11:21:03,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 54 SyntacticMatches, 15 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2020-07-21 11:21:03,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-21 11:21:03,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-07-21 11:21:03,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-21 11:21:03,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2020-07-21 11:21:03,589 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 45 [2020-07-21 11:21:03,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:21:03,590 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2020-07-21 11:21:03,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-21 11:21:03,590 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2020-07-21 11:21:03,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-21 11:21:03,592 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:21:03,592 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:21:03,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:21:03,806 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:21:03,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:21:03,807 INFO L82 PathProgramCache]: Analyzing trace with hash 512124461, now seen corresponding path program 1 times [2020-07-21 11:21:03,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:21:03,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131372878] [2020-07-21 11:21:03,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:21:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:21:03,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 11:21:03,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:21:04,111 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:21:04,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:21:04,552 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:21:04,557 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:21:04,648 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:21:04,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131372878] [2020-07-21 11:21:04,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:21:04,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2020-07-21 11:21:04,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605987150] [2020-07-21 11:21:04,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-21 11:21:04,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:21:04,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-21 11:21:04,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2020-07-21 11:21:04,656 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand 24 states. [2020-07-21 11:21:05,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:21:05,876 INFO L93 Difference]: Finished difference Result 89 states and 103 transitions. [2020-07-21 11:21:05,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-21 11:21:05,877 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 45 [2020-07-21 11:21:05,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:21:05,879 INFO L225 Difference]: With dead ends: 89 [2020-07-21 11:21:05,881 INFO L226 Difference]: Without dead ends: 73 [2020-07-21 11:21:05,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=254, Invalid=1078, Unknown=0, NotChecked=0, Total=1332 [2020-07-21 11:21:05,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-07-21 11:21:05,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 59. [2020-07-21 11:21:05,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-21 11:21:05,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-07-21 11:21:05,909 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 45 [2020-07-21 11:21:05,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:21:05,909 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-07-21 11:21:05,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-21 11:21:05,910 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-07-21 11:21:05,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 11:21:05,916 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:21:05,917 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:21:06,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:21:06,118 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:21:06,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:21:06,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1069126843, now seen corresponding path program 1 times [2020-07-21 11:21:06,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:21:06,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1278524903] [2020-07-21 11:21:06,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:21:06,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:21:06,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-21 11:21:06,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:21:06,583 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 11:21:06,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:21:07,140 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 11:21:07,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1278524903] [2020-07-21 11:21:07,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:21:07,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 23 [2020-07-21 11:21:07,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616453172] [2020-07-21 11:21:07,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-21 11:21:07,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:21:07,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-21 11:21:07,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2020-07-21 11:21:07,144 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 23 states. [2020-07-21 11:21:08,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:21:08,178 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2020-07-21 11:21:08,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-21 11:21:08,179 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 57 [2020-07-21 11:21:08,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:21:08,182 INFO L225 Difference]: With dead ends: 73 [2020-07-21 11:21:08,182 INFO L226 Difference]: Without dead ends: 70 [2020-07-21 11:21:08,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 78 SyntacticMatches, 17 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=185, Invalid=1297, Unknown=0, NotChecked=0, Total=1482 [2020-07-21 11:21:08,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-21 11:21:08,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-07-21 11:21:08,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-21 11:21:08,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2020-07-21 11:21:08,195 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 57 [2020-07-21 11:21:08,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:21:08,195 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2020-07-21 11:21:08,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-21 11:21:08,196 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2020-07-21 11:21:08,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 11:21:08,197 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:21:08,197 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:21:08,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:21:08,412 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:21:08,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:21:08,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1878473469, now seen corresponding path program 1 times [2020-07-21 11:21:08,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:21:08,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087429835] [2020-07-21 11:21:08,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:21:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:21:08,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 11:21:08,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:21:08,804 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 11:21:08,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:21:09,331 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 11:21:09,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087429835] [2020-07-21 11:21:09,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:21:09,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 25 [2020-07-21 11:21:09,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693771738] [2020-07-21 11:21:09,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-21 11:21:09,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:21:09,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-21 11:21:09,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2020-07-21 11:21:09,335 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand 25 states. [2020-07-21 11:21:10,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:21:10,466 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2020-07-21 11:21:10,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-21 11:21:10,467 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 57 [2020-07-21 11:21:10,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:21:10,469 INFO L225 Difference]: With dead ends: 83 [2020-07-21 11:21:10,469 INFO L226 Difference]: Without dead ends: 70 [2020-07-21 11:21:10,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 79 SyntacticMatches, 14 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=207, Invalid=1515, Unknown=0, NotChecked=0, Total=1722 [2020-07-21 11:21:10,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-21 11:21:10,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-07-21 11:21:10,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-21 11:21:10,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2020-07-21 11:21:10,482 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 57 [2020-07-21 11:21:10,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:21:10,483 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2020-07-21 11:21:10,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-21 11:21:10,483 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2020-07-21 11:21:10,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 11:21:10,484 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:21:10,485 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:21:10,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:21:10,693 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:21:10,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:21:10,694 INFO L82 PathProgramCache]: Analyzing trace with hash 482320829, now seen corresponding path program 1 times [2020-07-21 11:21:10,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:21:10,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476885080] [2020-07-21 11:21:10,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:21:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:21:10,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 37 conjunts are in the unsatisfiable core [2020-07-21 11:21:10,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:21:10,909 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-21 11:21:10,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:21:11,105 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-21 11:21:11,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476885080] [2020-07-21 11:21:11,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:21:11,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 11 [2020-07-21 11:21:11,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122081389] [2020-07-21 11:21:11,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 11:21:11,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:21:11,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 11:21:11,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-07-21 11:21:11,109 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 11 states. [2020-07-21 11:21:11,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:21:11,442 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2020-07-21 11:21:11,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 11:21:11,446 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-07-21 11:21:11,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:21:11,447 INFO L225 Difference]: With dead ends: 82 [2020-07-21 11:21:11,447 INFO L226 Difference]: Without dead ends: 69 [2020-07-21 11:21:11,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-07-21 11:21:11,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-21 11:21:11,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-07-21 11:21:11,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-21 11:21:11,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2020-07-21 11:21:11,458 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 57 [2020-07-21 11:21:11,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:21:11,462 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2020-07-21 11:21:11,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 11:21:11,462 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2020-07-21 11:21:11,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 11:21:11,463 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:21:11,464 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:21:11,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:21:11,680 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:21:11,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:21:11,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1291667455, now seen corresponding path program 1 times [2020-07-21 11:21:11,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:21:11,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487508141] [2020-07-21 11:21:11,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:21:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:21:11,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-21 11:21:11,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:21:11,975 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-21 11:21:11,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:21:11,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487508141] [2020-07-21 11:21:11,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:21:11,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-21 11:21:11,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617691132] [2020-07-21 11:21:11,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-21 11:21:11,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:21:11,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-21 11:21:11,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-07-21 11:21:11,980 INFO L87 Difference]: Start difference. First operand 69 states and 77 transitions. Second operand 15 states. [2020-07-21 11:21:12,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:21:12,525 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2020-07-21 11:21:12,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-21 11:21:12,525 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-07-21 11:21:12,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:21:12,528 INFO L225 Difference]: With dead ends: 93 [2020-07-21 11:21:12,528 INFO L226 Difference]: Without dead ends: 82 [2020-07-21 11:21:12,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2020-07-21 11:21:12,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-21 11:21:12,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 64. [2020-07-21 11:21:12,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-07-21 11:21:12,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2020-07-21 11:21:12,562 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 57 [2020-07-21 11:21:12,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:21:12,562 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2020-07-21 11:21:12,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-21 11:21:12,563 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2020-07-21 11:21:12,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-07-21 11:21:12,564 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:21:12,568 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 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, 1] [2020-07-21 11:21:12,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:21:12,782 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:21:12,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:21:12,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1118751113, now seen corresponding path program 1 times [2020-07-21 11:21:12,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:21:12,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567805106] [2020-07-21 11:21:12,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:21:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 11:21:12,930 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 11:21:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 11:21:12,957 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 11:21:13,058 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 11:21:13,058 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 11:21:13,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:21:13,325 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 7 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2020-07-21 11:21:13,327 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 9 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2020-07-21 11:21:13,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:21:13 BoogieIcfgContainer [2020-07-21 11:21:13,359 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 11:21:13,362 INFO L168 Benchmark]: Toolchain (without parser) took 16574.37 ms. Allocated memory was 134.2 MB in the beginning and 363.9 MB in the end (delta: 229.6 MB). Free memory was 96.6 MB in the beginning and 115.2 MB in the end (delta: -18.6 MB). Peak memory consumption was 211.1 MB. Max. memory is 7.1 GB. [2020-07-21 11:21:13,363 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 134.2 MB. Free memory was 116.0 MB in the beginning and 115.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 11:21:13,364 INFO L168 Benchmark]: CACSL2BoogieTranslator took 755.33 ms. Allocated memory was 134.2 MB in the beginning and 201.3 MB in the end (delta: 67.1 MB). Free memory was 95.8 MB in the beginning and 166.9 MB in the end (delta: -71.1 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2020-07-21 11:21:13,365 INFO L168 Benchmark]: Boogie Preprocessor took 65.39 ms. Allocated memory is still 201.3 MB. Free memory was 166.9 MB in the beginning and 164.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-07-21 11:21:13,366 INFO L168 Benchmark]: RCFGBuilder took 708.54 ms. Allocated memory is still 201.3 MB. Free memory was 164.1 MB in the beginning and 118.5 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. [2020-07-21 11:21:13,367 INFO L168 Benchmark]: TraceAbstraction took 15036.48 ms. Allocated memory was 201.3 MB in the beginning and 363.9 MB in the end (delta: 162.5 MB). Free memory was 117.7 MB in the beginning and 115.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 165.1 MB. Max. memory is 7.1 GB. [2020-07-21 11:21:13,371 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 134.2 MB. Free memory was 116.0 MB in the beginning and 115.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 755.33 ms. Allocated memory was 134.2 MB in the beginning and 201.3 MB in the end (delta: 67.1 MB). Free memory was 95.8 MB in the beginning and 166.9 MB in the end (delta: -71.1 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.39 ms. Allocated memory is still 201.3 MB. Free memory was 166.9 MB in the beginning and 164.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 708.54 ms. Allocated memory is still 201.3 MB. Free memory was 164.1 MB in the beginning and 118.5 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15036.48 ms. Allocated memory was 201.3 MB in the beginning and 363.9 MB in the end (delta: 162.5 MB). Free memory was 117.7 MB in the beginning and 115.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 165.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 7 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 9 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L867] void * guard_malloc_counter = 0; [L887] struct list_head *elem = ((void *)0); [L900] static struct list_head head; VAL [\old(elem)=12, \old(elem)=11, \old(guard_malloc_counter)=5, \old(guard_malloc_counter)=6, \old(head)=null, \old(head)=null, elem={0:0}, guard_malloc_counter={0:0}, head={2:0}] [L903] struct list_head *dev1, *dev2; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:0}, head={2:0}] [L904] CALL, EXPR my_malloc(sizeof(*dev1)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={2:0}] [L879] CALL, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={2:0}] [L871] (size > 0) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={2:0}, size=8] [L872] guard_malloc_counter++ [L873] COND FALSE !(!__VERIFIER_nondet_int()) [L875] return (void *) guard_malloc_counter; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, \result={0:1}, elem={0:0}, guard_malloc_counter={0:1}, head={2:0}, size=8] [L879] RET, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, __getMemory(size)={0:1}, elem={0:0}, guard_malloc_counter={0:1}, head={2:0}, size=8] [L879] return __getMemory(size); [L904] RET, EXPR my_malloc(sizeof(*dev1)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:1}, head={2:0}, my_malloc(sizeof(*dev1))={0:1}] [L904] dev1 = my_malloc(sizeof(*dev1)) [L905] CALL, EXPR my_malloc(sizeof(*dev2)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={2:0}] [L879] CALL, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={2:0}] [L871] (size > 0) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=1, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={2:0}, size=8] [L872] guard_malloc_counter++ [L873] COND FALSE !(!__VERIFIER_nondet_int()) [L875] return (void *) guard_malloc_counter; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, \result={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={2:0}, size=8] [L879] RET, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=1, \old(size)=8, __getMemory(size)={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={2:0}, size=8] [L879] return __getMemory(size); [L905] RET, EXPR my_malloc(sizeof(*dev2)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, elem={0:0}, guard_malloc_counter={0:2}, head={2:0}, my_malloc(sizeof(*dev2))={0:2}] [L905] dev2 = my_malloc(sizeof(*dev2)) [L906] COND TRUE dev1!=((void *)0) && dev2!=((void *)0) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={2:0}] [L907] CALL list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:2}, head={2:0}, head={2:0}, new={0:2}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:2}, head={2:0}, head={2:0}, head={2:0}, new={0:2}, new={0:2}] [L891] COND TRUE __VERIFIER_nondet_int() [L892] elem = new VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:2}, guard_malloc_counter={0:2}, head={2:0}, head={2:0}, head={2:0}, new={0:2}, new={0:2}] [L907] RET list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:2}, guard_malloc_counter={0:2}, head={2:0}] [L908] CALL list_add(dev1, &head) VAL [\old(elem)=2, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:2}, guard_malloc_counter={0:2}, head={2:0}, head={2:0}, new={0:1}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=2, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:2}, guard_malloc_counter={0:2}, head={2:0}, head={2:0}, head={2:0}, new={0:1}, new={0:1}] [L891] COND TRUE __VERIFIER_nondet_int() [L892] elem = new VAL [\old(elem)=2, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={2:0}, head={2:0}, head={2:0}, new={0:1}, new={0:1}] [L908] RET list_add(dev1, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={2:0}] [L909] CALL list_del(dev2) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, entry={0:2}, guard_malloc_counter={0:2}, head={2:0}] [L896] COND FALSE !(entry==elem) VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, entry={0:2}, entry={0:2}, guard_malloc_counter={0:2}, head={2:0}] [L909] RET list_del(dev2) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={2:0}] [L910] CALL list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={2:0}, head={2:0}, new={0:2}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={2:0}, head={2:0}, head={2:0}, new={0:2}, new={0:2}] [L891] COND FALSE !(__VERIFIER_nondet_int()) [L910] RET list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={2:0}] [L913] CALL list_add(dev1, &head) VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={2:0}, head={2:0}, new={0:1}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={2:0}, head={2:0}, head={2:0}, new={0:1}, new={0:1}] [L890] CALL __blast_assert () VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={2:0}] [L6] __VERIFIER_error() VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.8s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 401 SDtfs, 472 SDslu, 1449 SDs, 0 SdLazy, 4265 SolverSat, 536 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 832 GetRequests, 565 SyntacticMatches, 47 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=7, 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, 10 MinimizatonAttempts, 45 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 509 NumberOfCodeBlocks, 509 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 728 ConstructedInterpolants, 0 QuantifiedInterpolants, 115989 SizeOfPredicates, 56 NumberOfNonLiveVariables, 2611 ConjunctsInSsa, 228 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 163/243 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...