/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:28:43,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:28:43,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:28:43,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:28:43,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:28:43,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:28:43,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:28:43,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:28:43,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:28:43,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:28:43,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:28:43,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:28:43,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:28:43,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:28:43,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:28:43,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:28:43,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:28:43,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:28:43,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:28:43,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:28:43,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:28:43,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:28:43,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:28:43,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:28:43,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 13:28:43,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 13:28:43,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 13:28:43,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 13:28:43,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 13:28:43,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 13:28:43,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 13:28:43,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 13:28:43,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 13:28:43,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 13:28:43,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 13:28:43,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 13:28:43,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 13:28:43,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 13:28:43,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:28:43,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:28:43,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:28:43,498 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:28:43,522 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:28:43,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:28:43,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:28:43,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:28:43,524 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:28:43,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:28:43,525 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:28:43,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:28:43,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:28:43,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:28:43,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:28:43,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:28:43,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:28:43,526 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:28:43,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:28:43,527 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:28:43,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:28:43,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:28:43,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:28:43,527 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:28:43,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:28:43,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:28:43,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:28:43,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:28:43,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:28:43,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:28:43,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:28:43,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:28:43,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:28:43,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:28:43,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:28:43,997 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:28:44,004 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:28:44,006 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:28:44,006 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:28:44,007 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-09-04 13:28:44,087 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1aa46767a/36d3e70fd5b544f693dd3240a85c3f0a/FLAG12c4f47a6 [2020-09-04 13:28:44,701 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:28:44,702 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-09-04 13:28:44,718 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1aa46767a/36d3e70fd5b544f693dd3240a85c3f0a/FLAG12c4f47a6 [2020-09-04 13:28:44,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1aa46767a/36d3e70fd5b544f693dd3240a85c3f0a [2020-09-04 13:28:44,973 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:28:44,974 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:28:44,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:28:44,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:28:44,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:28:44,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:28:44" (1/1) ... [2020-09-04 13:28:44,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7105da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:28:44, skipping insertion in model container [2020-09-04 13:28:44,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:28:44" (1/1) ... [2020-09-04 13:28:44,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:28:45,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:28:45,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:28:45,533 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:28:45,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:28:45,684 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:28:45,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:28:45 WrapperNode [2020-09-04 13:28:45,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:28:45,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:28:45,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:28:45,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:28:45,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:28:45" (1/1) ... [2020-09-04 13:28:45,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:28:45" (1/1) ... [2020-09-04 13:28:45,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:28:45" (1/1) ... [2020-09-04 13:28:45,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:28:45" (1/1) ... [2020-09-04 13:28:45,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:28:45" (1/1) ... [2020-09-04 13:28:45,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:28:45" (1/1) ... [2020-09-04 13:28:45,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:28:45" (1/1) ... [2020-09-04 13:28:45,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:28:45,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:28:45,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:28:45,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:28:45,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:28:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:28:45,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:28:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:28:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-04 13:28:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-09-04 13:28:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-09-04 13:28:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-09-04 13:28:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-09-04 13:28:45,840 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:28:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:28:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-04 13:28:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-09-04 13:28:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-09-04 13:28:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-09-04 13:28:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-09-04 13:28:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-09-04 13:28:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-09-04 13:28:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-09-04 13:28:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-09-04 13:28:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-09-04 13:28:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-09-04 13:28:45,843 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-09-04 13:28:45,843 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-09-04 13:28:45,843 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-09-04 13:28:45,843 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-09-04 13:28:45,843 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-09-04 13:28:45,843 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-09-04 13:28:45,844 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-09-04 13:28:45,844 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-09-04 13:28:45,844 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-09-04 13:28:45,844 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-09-04 13:28:45,844 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-09-04 13:28:45,844 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-09-04 13:28:45,845 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-09-04 13:28:45,845 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-09-04 13:28:45,845 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-09-04 13:28:45,845 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-09-04 13:28:45,845 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-09-04 13:28:45,845 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-09-04 13:28:45,846 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-09-04 13:28:45,846 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-09-04 13:28:45,846 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-09-04 13:28:45,846 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-09-04 13:28:45,846 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-09-04 13:28:45,846 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-09-04 13:28:45,847 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-09-04 13:28:45,847 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-09-04 13:28:45,847 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-09-04 13:28:45,847 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-09-04 13:28:45,847 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 13:28:45,847 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-09-04 13:28:45,847 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-09-04 13:28:45,848 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-09-04 13:28:45,848 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-09-04 13:28:45,848 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-09-04 13:28:45,848 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-09-04 13:28:45,848 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-09-04 13:28:45,848 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-09-04 13:28:45,848 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-09-04 13:28:45,849 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-09-04 13:28:45,849 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-09-04 13:28:45,849 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-09-04 13:28:45,849 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-09-04 13:28:45,849 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-09-04 13:28:45,849 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-09-04 13:28:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-04 13:28:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-09-04 13:28:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-09-04 13:28:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-09-04 13:28:45,850 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-09-04 13:28:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-09-04 13:28:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-09-04 13:28:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-09-04 13:28:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-09-04 13:28:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-09-04 13:28:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-09-04 13:28:45,851 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-09-04 13:28:45,852 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-09-04 13:28:45,852 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-09-04 13:28:45,852 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-09-04 13:28:45,852 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-09-04 13:28:45,852 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-09-04 13:28:45,852 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-09-04 13:28:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-09-04 13:28:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-09-04 13:28:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-09-04 13:28:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-09-04 13:28:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-09-04 13:28:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-09-04 13:28:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-09-04 13:28:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-09-04 13:28:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-09-04 13:28:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-09-04 13:28:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-09-04 13:28:45,854 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-09-04 13:28:45,855 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-09-04 13:28:45,855 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-09-04 13:28:45,855 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-09-04 13:28:45,855 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-09-04 13:28:45,855 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-09-04 13:28:45,855 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-09-04 13:28:45,856 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-09-04 13:28:45,856 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-09-04 13:28:45,856 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-09-04 13:28:45,856 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-09-04 13:28:45,856 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-09-04 13:28:45,856 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-09-04 13:28:45,856 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-09-04 13:28:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-09-04 13:28:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-09-04 13:28:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-09-04 13:28:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-09-04 13:28:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 13:28:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-04 13:28:45,857 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-04 13:28:45,858 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 13:28:45,858 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-04 13:28:45,858 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-09-04 13:28:45,858 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-04 13:28:45,858 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-09-04 13:28:45,858 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-09-04 13:28:45,859 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-09-04 13:28:45,859 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-09-04 13:28:45,859 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-09-04 13:28:45,859 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-09-04 13:28:45,859 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-09-04 13:28:45,859 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-09-04 13:28:45,860 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-09-04 13:28:45,860 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-09-04 13:28:45,860 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-09-04 13:28:45,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:28:45,860 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-09-04 13:28:45,860 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-09-04 13:28:45,861 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-09-04 13:28:45,861 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-09-04 13:28:45,861 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:28:45,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:28:45,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 13:28:45,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-04 13:28:45,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:28:45,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 13:28:45,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 13:28:45,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:28:46,437 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:28:46,437 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 13:28:46,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:28:46 BoogieIcfgContainer [2020-09-04 13:28:46,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:28:46,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:28:46,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:28:46,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:28:46,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:28:44" (1/3) ... [2020-09-04 13:28:46,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44745192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:28:46, skipping insertion in model container [2020-09-04 13:28:46,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:28:45" (2/3) ... [2020-09-04 13:28:46,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44745192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:28:46, skipping insertion in model container [2020-09-04 13:28:46,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:28:46" (3/3) ... [2020-09-04 13:28:46,451 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.i [2020-09-04 13:28:46,465 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:28:46,475 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:28:46,496 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:28:46,521 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:28:46,521 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:28:46,521 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:28:46,521 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:28:46,521 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:28:46,521 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:28:46,521 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:28:46,522 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:28:46,543 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-09-04 13:28:46,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-04 13:28:46,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:28:46,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:28:46,551 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:28:46,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:28:46,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1135050545, now seen corresponding path program 1 times [2020-09-04 13:28:46,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:28:46,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494223554] [2020-09-04 13:28:46,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:28:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:46,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:28:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:46,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:28:46,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494223554] [2020-09-04 13:28:46,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:28:46,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 13:28:46,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423868157] [2020-09-04 13:28:46,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 13:28:46,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:28:46,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 13:28:46,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 13:28:46,919 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 7 states. [2020-09-04 13:28:47,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:28:47,321 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2020-09-04 13:28:47,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 13:28:47,323 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-09-04 13:28:47,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:28:47,338 INFO L225 Difference]: With dead ends: 88 [2020-09-04 13:28:47,338 INFO L226 Difference]: Without dead ends: 43 [2020-09-04 13:28:47,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-09-04 13:28:47,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-04 13:28:47,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-09-04 13:28:47,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-04 13:28:47,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-09-04 13:28:47,399 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 13 [2020-09-04 13:28:47,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:28:47,399 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-09-04 13:28:47,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 13:28:47,400 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-09-04 13:28:47,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-04 13:28:47,402 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:28:47,402 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] [2020-09-04 13:28:47,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:28:47,403 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:28:47,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:28:47,403 INFO L82 PathProgramCache]: Analyzing trace with hash -925661111, now seen corresponding path program 1 times [2020-09-04 13:28:47,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:28:47,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529653249] [2020-09-04 13:28:47,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:28:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:47,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:28:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:47,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:28:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:47,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:28:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:47,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 13:28:47,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:47,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:28:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:47,775 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-04 13:28:47,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529653249] [2020-09-04 13:28:47,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:28:47,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 13:28:47,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926847535] [2020-09-04 13:28:47,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 13:28:47,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:28:47,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 13:28:47,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 13:28:47,780 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 9 states. [2020-09-04 13:28:48,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:28:48,008 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2020-09-04 13:28:48,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 13:28:48,009 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-09-04 13:28:48,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:28:48,012 INFO L225 Difference]: With dead ends: 67 [2020-09-04 13:28:48,012 INFO L226 Difference]: Without dead ends: 48 [2020-09-04 13:28:48,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 13:28:48,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-04 13:28:48,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-09-04 13:28:48,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-04 13:28:48,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-09-04 13:28:48,027 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 38 [2020-09-04 13:28:48,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:28:48,028 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-09-04 13:28:48,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 13:28:48,028 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-09-04 13:28:48,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-04 13:28:48,030 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:28:48,030 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] [2020-09-04 13:28:48,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:28:48,031 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:28:48,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:28:48,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1219064118, now seen corresponding path program 1 times [2020-09-04 13:28:48,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:28:48,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319437994] [2020-09-04 13:28:48,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:28:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:48,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:28:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:48,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:28:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:48,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:28:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:48,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 13:28:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:48,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:28:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:48,429 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-04 13:28:48,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319437994] [2020-09-04 13:28:48,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394169624] [2020-09-04 13:28:48,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:28:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:48,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 26 conjunts are in the unsatisfiable core [2020-09-04 13:28:48,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:28:49,020 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-04 13:28:49,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:28:49,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [9] total 20 [2020-09-04 13:28:49,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337161503] [2020-09-04 13:28:49,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 13:28:49,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:28:49,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 13:28:49,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2020-09-04 13:28:49,024 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 13 states. [2020-09-04 13:28:49,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:28:49,576 INFO L93 Difference]: Finished difference Result 76 states and 87 transitions. [2020-09-04 13:28:49,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 13:28:49,577 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-09-04 13:28:49,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:28:49,580 INFO L225 Difference]: With dead ends: 76 [2020-09-04 13:28:49,580 INFO L226 Difference]: Without dead ends: 65 [2020-09-04 13:28:49,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2020-09-04 13:28:49,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-04 13:28:49,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2020-09-04 13:28:49,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-04 13:28:49,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-09-04 13:28:49,596 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 38 [2020-09-04 13:28:49,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:28:49,596 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-09-04 13:28:49,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 13:28:49,597 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-09-04 13:28:49,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-04 13:28:49,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:28:49,599 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:28:49,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-09-04 13:28:49,809 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:28:49,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:28:49,810 INFO L82 PathProgramCache]: Analyzing trace with hash -775693011, now seen corresponding path program 1 times [2020-09-04 13:28:49,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:28:49,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692386003] [2020-09-04 13:28:49,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:28:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:50,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:28:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:50,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:28:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:50,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:28:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:50,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 13:28:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:50,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:28:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:50,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 13:28:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:50,391 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-04 13:28:50,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692386003] [2020-09-04 13:28:50,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784426122] [2020-09-04 13:28:50,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:28:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:50,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 31 conjunts are in the unsatisfiable core [2020-09-04 13:28:50,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:28:51,267 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-04 13:28:51,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:28:51,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 41 [2020-09-04 13:28:51,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497675681] [2020-09-04 13:28:51,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-09-04 13:28:51,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:28:51,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-09-04 13:28:51,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1529, Unknown=0, NotChecked=0, Total=1640 [2020-09-04 13:28:51,270 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 41 states. [2020-09-04 13:28:54,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:28:54,144 INFO L93 Difference]: Finished difference Result 81 states and 100 transitions. [2020-09-04 13:28:54,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-04 13:28:54,145 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 45 [2020-09-04 13:28:54,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:28:54,147 INFO L225 Difference]: With dead ends: 81 [2020-09-04 13:28:54,147 INFO L226 Difference]: Without dead ends: 78 [2020-09-04 13:28:54,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=405, Invalid=3501, Unknown=0, NotChecked=0, Total=3906 [2020-09-04 13:28:54,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-04 13:28:54,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 71. [2020-09-04 13:28:54,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-04 13:28:54,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2020-09-04 13:28:54,165 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 45 [2020-09-04 13:28:54,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:28:54,166 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2020-09-04 13:28:54,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-09-04 13:28:54,166 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2020-09-04 13:28:54,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-04 13:28:54,168 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:28:54,168 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:28:54,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:28:54,382 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:28:54,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:28:54,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1585039637, now seen corresponding path program 1 times [2020-09-04 13:28:54,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:28:54,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853537392] [2020-09-04 13:28:54,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:28:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:54,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:28:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:54,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:28:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:54,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:28:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:54,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 13:28:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:54,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:28:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:54,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 13:28:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:54,590 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-04 13:28:54,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853537392] [2020-09-04 13:28:54,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159109629] [2020-09-04 13:28:54,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:28:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:54,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 21 conjunts are in the unsatisfiable core [2020-09-04 13:28:54,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:28:54,793 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-04 13:28:54,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:28:54,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 10 [2020-09-04 13:28:54,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086300681] [2020-09-04 13:28:54,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 13:28:54,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:28:54,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 13:28:54,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 13:28:54,795 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand 10 states. [2020-09-04 13:28:55,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:28:55,158 INFO L93 Difference]: Finished difference Result 101 states and 117 transitions. [2020-09-04 13:28:55,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 13:28:55,159 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2020-09-04 13:28:55,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:28:55,161 INFO L225 Difference]: With dead ends: 101 [2020-09-04 13:28:55,161 INFO L226 Difference]: Without dead ends: 56 [2020-09-04 13:28:55,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-09-04 13:28:55,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-04 13:28:55,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-09-04 13:28:55,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-04 13:28:55,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2020-09-04 13:28:55,172 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 45 [2020-09-04 13:28:55,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:28:55,172 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2020-09-04 13:28:55,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 13:28:55,173 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2020-09-04 13:28:55,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-04 13:28:55,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:28:55,174 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] [2020-09-04 13:28:55,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:28:55,383 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:28:55,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:28:55,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1335597358, now seen corresponding path program 1 times [2020-09-04 13:28:55,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:28:55,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383707123] [2020-09-04 13:28:55,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:28:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:55,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:28:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:55,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:28:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:55,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:28:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:55,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 13:28:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:55,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:28:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:55,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 13:28:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:55,798 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 13:28:55,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383707123] [2020-09-04 13:28:55,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244650764] [2020-09-04 13:28:55,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:28:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:55,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 23 conjunts are in the unsatisfiable core [2020-09-04 13:28:55,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:28:56,239 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:28:56,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:28:56,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 29 [2020-09-04 13:28:56,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109009570] [2020-09-04 13:28:56,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-04 13:28:56,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:28:56,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-04 13:28:56,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2020-09-04 13:28:56,242 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 29 states. [2020-09-04 13:28:57,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:28:57,466 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2020-09-04 13:28:57,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 13:28:57,467 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 45 [2020-09-04 13:28:57,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:28:57,469 INFO L225 Difference]: With dead ends: 65 [2020-09-04 13:28:57,469 INFO L226 Difference]: Without dead ends: 58 [2020-09-04 13:28:57,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2020-09-04 13:28:57,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-04 13:28:57,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-09-04 13:28:57,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-04 13:28:57,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-09-04 13:28:57,481 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 45 [2020-09-04 13:28:57,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:28:57,481 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-09-04 13:28:57,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-04 13:28:57,481 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-09-04 13:28:57,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-04 13:28:57,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:28:57,483 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] [2020-09-04 13:28:57,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:28:57,697 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:28:57,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:28:57,698 INFO L82 PathProgramCache]: Analyzing trace with hash 526250732, now seen corresponding path program 1 times [2020-09-04 13:28:57,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:28:57,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806535080] [2020-09-04 13:28:57,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:28:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:57,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:28:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:57,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:28:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:57,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:28:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:57,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 13:28:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:58,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:28:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:58,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 13:28:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:58,062 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 13:28:58,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806535080] [2020-09-04 13:28:58,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555892287] [2020-09-04 13:28:58,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:28:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:58,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 23 conjunts are in the unsatisfiable core [2020-09-04 13:28:58,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:28:58,547 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:28:58,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:28:58,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 28 [2020-09-04 13:28:58,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897987951] [2020-09-04 13:28:58,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-09-04 13:28:58,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:28:58,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-09-04 13:28:58,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2020-09-04 13:28:58,551 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 28 states. [2020-09-04 13:28:59,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:28:59,645 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-09-04 13:28:59,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-04 13:28:59,646 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 45 [2020-09-04 13:28:59,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:28:59,647 INFO L225 Difference]: With dead ends: 65 [2020-09-04 13:28:59,647 INFO L226 Difference]: Without dead ends: 62 [2020-09-04 13:28:59,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=244, Invalid=1238, Unknown=0, NotChecked=0, Total=1482 [2020-09-04 13:28:59,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-04 13:28:59,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-09-04 13:28:59,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-04 13:28:59,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-09-04 13:28:59,658 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 45 [2020-09-04 13:28:59,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:28:59,658 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-09-04 13:28:59,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-09-04 13:28:59,658 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-09-04 13:28:59,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-04 13:28:59,659 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:28:59,660 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] [2020-09-04 13:28:59,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-09-04 13:28:59,875 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:28:59,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:28:59,876 INFO L82 PathProgramCache]: Analyzing trace with hash -2119488644, now seen corresponding path program 1 times [2020-09-04 13:28:59,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:28:59,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058458395] [2020-09-04 13:28:59,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:28:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:59,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:28:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:28:59,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:28:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:00,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:29:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:00,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 13:29:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:00,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:29:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:00,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 13:29:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:00,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-04 13:29:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:00,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-04 13:29:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:00,305 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-04 13:29:00,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058458395] [2020-09-04 13:29:00,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940066278] [2020-09-04 13:29:00,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:29:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:00,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 23 conjunts are in the unsatisfiable core [2020-09-04 13:29:00,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:29:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 13:29:00,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:29:00,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 31 [2020-09-04 13:29:00,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330900058] [2020-09-04 13:29:00,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-04 13:29:00,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:29:00,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-04 13:29:00,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=846, Unknown=0, NotChecked=0, Total=930 [2020-09-04 13:29:00,834 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 31 states. [2020-09-04 13:29:02,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:29:02,196 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-09-04 13:29:02,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 13:29:02,197 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 57 [2020-09-04 13:29:02,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:29:02,199 INFO L225 Difference]: With dead ends: 66 [2020-09-04 13:29:02,199 INFO L226 Difference]: Without dead ends: 60 [2020-09-04 13:29:02,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=245, Invalid=2011, Unknown=0, NotChecked=0, Total=2256 [2020-09-04 13:29:02,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-04 13:29:02,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2020-09-04 13:29:02,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-04 13:29:02,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2020-09-04 13:29:02,210 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 57 [2020-09-04 13:29:02,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:29:02,211 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2020-09-04 13:29:02,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-04 13:29:02,211 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2020-09-04 13:29:02,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-04 13:29:02,212 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:29:02,212 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] [2020-09-04 13:29:02,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:29:02,427 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:29:02,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:29:02,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1366132026, now seen corresponding path program 1 times [2020-09-04 13:29:02,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:29:02,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999740028] [2020-09-04 13:29:02,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:29:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:02,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:29:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:02,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:29:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:02,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:29:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:02,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 13:29:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:02,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:29:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:02,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 13:29:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:02,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-04 13:29:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:02,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-04 13:29:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-04 13:29:02,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999740028] [2020-09-04 13:29:02,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149743189] [2020-09-04 13:29:02,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:29:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:03,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 25 conjunts are in the unsatisfiable core [2020-09-04 13:29:03,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:29:03,382 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 13:29:03,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:29:03,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20] total 31 [2020-09-04 13:29:03,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073996795] [2020-09-04 13:29:03,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-04 13:29:03,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:29:03,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-04 13:29:03,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2020-09-04 13:29:03,385 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 31 states. [2020-09-04 13:29:04,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:29:04,597 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-09-04 13:29:04,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 13:29:04,598 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 57 [2020-09-04 13:29:04,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:29:04,599 INFO L225 Difference]: With dead ends: 63 [2020-09-04 13:29:04,599 INFO L226 Difference]: Without dead ends: 49 [2020-09-04 13:29:04,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=243, Invalid=1827, Unknown=0, NotChecked=0, Total=2070 [2020-09-04 13:29:04,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-04 13:29:04,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-09-04 13:29:04,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-04 13:29:04,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-09-04 13:29:04,607 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 57 [2020-09-04 13:29:04,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:29:04,607 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-09-04 13:29:04,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-04 13:29:04,608 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-09-04 13:29:04,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-04 13:29:04,609 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:29:04,609 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] [2020-09-04 13:29:04,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:29:04,821 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:29:04,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:29:04,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1588672638, now seen corresponding path program 1 times [2020-09-04 13:29:04,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:29:04,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440699008] [2020-09-04 13:29:04,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:29:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:04,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:29:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:04,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:29:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:05,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:29:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:05,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 13:29:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:05,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:29:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:05,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 13:29:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:05,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-04 13:29:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:05,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-04 13:29:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:05,168 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-04 13:29:05,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440699008] [2020-09-04 13:29:05,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444201050] [2020-09-04 13:29:05,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:29:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:05,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 24 conjunts are in the unsatisfiable core [2020-09-04 13:29:05,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:29:05,609 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-04 13:29:05,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:29:05,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [18] total 26 [2020-09-04 13:29:05,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572049516] [2020-09-04 13:29:05,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 13:29:05,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:29:05,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 13:29:05,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2020-09-04 13:29:05,612 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 15 states. [2020-09-04 13:29:06,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:29:06,173 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-09-04 13:29:06,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 13:29:06,174 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-09-04 13:29:06,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:29:06,175 INFO L225 Difference]: With dead ends: 60 [2020-09-04 13:29:06,175 INFO L226 Difference]: Without dead ends: 52 [2020-09-04 13:29:06,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=218, Invalid=1264, Unknown=0, NotChecked=0, Total=1482 [2020-09-04 13:29:06,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-04 13:29:06,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2020-09-04 13:29:06,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-04 13:29:06,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-09-04 13:29:06,184 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 57 [2020-09-04 13:29:06,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:29:06,184 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-09-04 13:29:06,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 13:29:06,184 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-09-04 13:29:06,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-04 13:29:06,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:29:06,186 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] [2020-09-04 13:29:06,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-09-04 13:29:06,401 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:29:06,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:29:06,402 INFO L82 PathProgramCache]: Analyzing trace with hash 779326012, now seen corresponding path program 1 times [2020-09-04 13:29:06,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:29:06,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277071989] [2020-09-04 13:29:06,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:29:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:06,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:29:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:06,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:29:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:06,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:29:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:06,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 13:29:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:06,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:29:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:06,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 13:29:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:06,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-04 13:29:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:06,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-04 13:29:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:06,607 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-04 13:29:06,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277071989] [2020-09-04 13:29:06,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584617980] [2020-09-04 13:29:06,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:29:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:06,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 37 conjunts are in the unsatisfiable core [2020-09-04 13:29:06,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:29:06,778 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-04 13:29:06,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:29:06,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 11 [2020-09-04 13:29:06,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950594570] [2020-09-04 13:29:06,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 13:29:06,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:29:06,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 13:29:06,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-04 13:29:06,780 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 11 states. [2020-09-04 13:29:07,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:29:07,152 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-04 13:29:07,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 13:29:07,153 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-09-04 13:29:07,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:29:07,154 INFO L225 Difference]: With dead ends: 47 [2020-09-04 13:29:07,154 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 13:29:07,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 65 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-09-04 13:29:07,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 13:29:07,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 13:29:07,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 13:29:07,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 13:29:07,156 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2020-09-04 13:29:07,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:29:07,156 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 13:29:07,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 13:29:07,156 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 13:29:07,156 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 13:29:07,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:29:07,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 13:29:08,194 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 37 [2020-09-04 13:29:08,325 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2020-09-04 13:29:08,537 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-09-04 13:29:08,648 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 31 [2020-09-04 13:29:08,828 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 29 [2020-09-04 13:29:09,382 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2020-09-04 13:29:09,514 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-09-04 13:29:09,582 INFO L268 CegarLoopResult]: For program point my_mallocFINAL(lines 878 880) no Hoare annotation was computed. [2020-09-04 13:29:09,583 INFO L264 CegarLoopResult]: At program point L879(line 879) the Hoare annotation is: (let ((.cse0 (and (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~guard_malloc_counter~0.base 0) (= my_malloc_~size 8))) (.cse1 (not (= |my_malloc_#in~size| 8))) (.cse2 (not (= |old(~guard_malloc_counter~0.base)| 0)))) (and (or (not (<= 1 |old(~guard_malloc_counter~0.offset)|)) .cse0 (not (<= ~elem~0.offset 0)) .cse1 .cse2) (or .cse0 .cse1 .cse2 (not (= ~elem~0.offset 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))))) [2020-09-04 13:29:09,583 INFO L268 CegarLoopResult]: For program point L879-1(line 879) no Hoare annotation was computed. [2020-09-04 13:29:09,583 INFO L264 CegarLoopResult]: At program point my_mallocENTRY(lines 878 880) the Hoare annotation is: (let ((.cse0 (not (= |my_malloc_#in~size| 8))) (.cse1 (not (= |old(~guard_malloc_counter~0.base)| 0))) (.cse2 (and (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~guard_malloc_counter~0.base 0)))) (and (or (not (<= 1 |old(~guard_malloc_counter~0.offset)|)) (not (<= ~elem~0.offset 0)) .cse0 .cse1 .cse2) (or .cse0 .cse1 (not (= ~elem~0.offset 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) .cse2))) [2020-09-04 13:29:09,584 INFO L268 CegarLoopResult]: For program point my_mallocEXIT(lines 878 880) no Hoare annotation was computed. [2020-09-04 13:29:09,584 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:29:09,584 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= |old(#NULL.base)| |#NULL.base|) (= |old(~#head~0.base)| |~#head~0.base|) (= |old(#length)| |#length|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |~#head~0.offset| |old(~#head~0.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(~elem~0.base)| ~elem~0.base) (= |old(#valid)| |#valid|) (= |old(~elem~0.offset)| ~elem~0.offset)) [2020-09-04 13:29:09,584 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:29:09,584 INFO L268 CegarLoopResult]: For program point L896(lines 896 897) no Hoare annotation was computed. [2020-09-04 13:29:09,584 INFO L268 CegarLoopResult]: For program point L896-2(lines 895 898) no Hoare annotation was computed. [2020-09-04 13:29:09,584 INFO L268 CegarLoopResult]: For program point list_delEXIT(lines 895 898) no Hoare annotation was computed. [2020-09-04 13:29:09,584 INFO L264 CegarLoopResult]: At program point list_delENTRY(lines 895 898) the Hoare annotation is: (let ((.cse0 (and (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset)))) (and (or (not (= ~guard_malloc_counter~0.base 0)) .cse0 (not (<= 0 ~guard_malloc_counter~0.offset))) (or (not (<= 1 ~guard_malloc_counter~0.offset)) (not (<= |old(~elem~0.offset)| 0)) .cse0))) [2020-09-04 13:29:09,585 INFO L264 CegarLoopResult]: At program point list_addENTRY(lines 889 893) the Hoare annotation is: (let ((.cse1 (not (= ~guard_malloc_counter~0.base 0))) (.cse0 (not (<= 1 ~guard_malloc_counter~0.offset))) (.cse2 (and (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset)))) (and (or .cse0 .cse1 (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|)) .cse2) (or (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|)) .cse1 .cse2 (not (<= 0 ~guard_malloc_counter~0.offset))) (or .cse0 (not (<= 2 |list_add_#in~new.offset|)) (not (<= |old(~elem~0.offset)| 0)) .cse2))) [2020-09-04 13:29:09,585 INFO L268 CegarLoopResult]: For program point L891(lines 891 892) no Hoare annotation was computed. [2020-09-04 13:29:09,585 INFO L268 CegarLoopResult]: For program point L890(line 890) no Hoare annotation was computed. [2020-09-04 13:29:09,585 INFO L268 CegarLoopResult]: For program point L891-2(lines 889 893) no Hoare annotation was computed. [2020-09-04 13:29:09,585 INFO L264 CegarLoopResult]: At program point L890-2(line 890) the Hoare annotation is: (let ((.cse0 (not (<= 1 ~guard_malloc_counter~0.offset))) (.cse1 (not (= ~guard_malloc_counter~0.base 0)))) (and (or .cse0 (not (<= 2 |list_add_#in~new.offset|)) (not (<= |old(~elem~0.offset)| 0))) (or (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|)) .cse1 (not (<= 0 ~guard_malloc_counter~0.offset))) (or .cse0 .cse1 (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|))))) [2020-09-04 13:29:09,585 INFO L268 CegarLoopResult]: For program point L890-3(line 890) no Hoare annotation was computed. [2020-09-04 13:29:09,585 INFO L268 CegarLoopResult]: For program point list_addEXIT(lines 889 893) no Hoare annotation was computed. [2020-09-04 13:29:09,586 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-09-04 13:29:09,586 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2020-09-04 13:29:09,586 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2020-09-04 13:29:09,586 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-09-04 13:29:09,586 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:29:09,586 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= ~guard_malloc_counter~0.base 0) (= ~elem~0.offset 0) (<= 0 ~guard_malloc_counter~0.offset)) [2020-09-04 13:29:09,586 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 13:29:09,586 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:29:09,586 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 902 917) the Hoare annotation is: (or (and (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~guard_malloc_counter~0.base 0) (= ~elem~0.offset 0) (= |old(~elem~0.base)| ~elem~0.base)) (not (= |old(~guard_malloc_counter~0.base)| 0)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))) [2020-09-04 13:29:09,587 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 902 917) no Hoare annotation was computed. [2020-09-04 13:29:09,587 INFO L264 CegarLoopResult]: At program point L909(line 909) the Hoare annotation is: (let ((.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset))) (or (and .cse0 (= ~guard_malloc_counter~0.base 0) (<= (+ ~elem~0.offset 1) main_~dev2~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset)) (not (= |old(~guard_malloc_counter~0.base)| 0)) (and (<= ~elem~0.offset 0) .cse0 (<= 2 main_~dev2~0.offset)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)))) [2020-09-04 13:29:09,587 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 902 917) no Hoare annotation was computed. [2020-09-04 13:29:09,587 INFO L264 CegarLoopResult]: At program point L908(line 908) the Hoare annotation is: (let ((.cse0 (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|)) (.cse2 (= ~guard_malloc_counter~0.base 0)) (.cse4 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse5 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset)) (.cse1 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset)) (.cse3 (<= 2 main_~dev2~0.offset))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= main_~dev2~0.base ~elem~0.base) (= main_~dev2~0.offset ~elem~0.offset) .cse5) (and .cse0 .cse1 .cse2 (<= (+ ~elem~0.offset 1) main_~dev2~0.offset) .cse4 .cse5) (not (= |old(~guard_malloc_counter~0.base)| 0)) (and (<= ~elem~0.offset 0) .cse1 .cse3) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)))) [2020-09-04 13:29:09,587 INFO L264 CegarLoopResult]: At program point L907(line 907) the Hoare annotation is: (or (not (= |old(~guard_malloc_counter~0.base)| 0)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset) (= ~guard_malloc_counter~0.base 0) (<= 1 main_~dev1~0.offset) (= ~elem~0.offset 0) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (= |old(~elem~0.base)| ~elem~0.base) (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset))) [2020-09-04 13:29:09,587 INFO L268 CegarLoopResult]: For program point L906(lines 906 915) no Hoare annotation was computed. [2020-09-04 13:29:09,587 INFO L264 CegarLoopResult]: At program point L907-1(line 907) the Hoare annotation is: (let ((.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset)) (.cse1 (= ~guard_malloc_counter~0.base 0)) (.cse2 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse3 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset))) (or (and .cse0 .cse1 (<= 2 main_~dev2~0.offset) .cse2 (= main_~dev2~0.base ~elem~0.base) (= main_~dev2~0.offset ~elem~0.offset) .cse3) (not (= |old(~guard_malloc_counter~0.base)| 0)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and .cse0 .cse1 (<= 1 main_~dev1~0.offset) (= ~elem~0.offset 0) .cse2 (= |old(~elem~0.base)| ~elem~0.base) .cse3))) [2020-09-04 13:29:09,588 INFO L264 CegarLoopResult]: At program point L905(line 905) the Hoare annotation is: (let ((.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset)) (.cse1 (= ~guard_malloc_counter~0.base 0)) (.cse2 (= |old(~elem~0.base)| ~elem~0.base))) (or (and .cse0 .cse1 (<= 1 main_~dev1~0.offset) (= ~elem~0.offset 0) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) .cse2) (and (= main_~dev1~0.base 0) .cse0 (= main_~dev1~0.offset 0) .cse1 .cse2 (= |old(~elem~0.offset)| ~elem~0.offset)) (not (= |old(~guard_malloc_counter~0.base)| 0)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)))) [2020-09-04 13:29:09,588 INFO L268 CegarLoopResult]: For program point L906-1(lines 906 915) no Hoare annotation was computed. [2020-09-04 13:29:09,588 INFO L264 CegarLoopResult]: At program point L904(line 904) the Hoare annotation is: (or (and (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~guard_malloc_counter~0.base 0) (= ~elem~0.offset 0) (= |old(~elem~0.base)| ~elem~0.base)) (not (= |old(~guard_malloc_counter~0.base)| 0)) (not (= |old(~elem~0.offset)| 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))) [2020-09-04 13:29:09,588 INFO L268 CegarLoopResult]: For program point L905-1(line 905) no Hoare annotation was computed. [2020-09-04 13:29:09,588 INFO L268 CegarLoopResult]: For program point L904-1(line 904) no Hoare annotation was computed. [2020-09-04 13:29:09,588 INFO L264 CegarLoopResult]: At program point __getMemoryENTRY(lines 869 876) the Hoare annotation is: (or (not (= |__getMemory_#in~size| 8)) (not (= |old(~guard_malloc_counter~0.base)| 0)) (not (= ~elem~0.offset 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~guard_malloc_counter~0.base 0))) [2020-09-04 13:29:09,588 INFO L268 CegarLoopResult]: For program point __getMemoryEXIT(lines 869 876) no Hoare annotation was computed. [2020-09-04 13:29:09,588 INFO L268 CegarLoopResult]: For program point __getMemoryFINAL(lines 869 876) no Hoare annotation was computed. [2020-09-04 13:29:09,588 INFO L268 CegarLoopResult]: For program point L873(lines 873 874) no Hoare annotation was computed. [2020-09-04 13:29:09,588 INFO L268 CegarLoopResult]: For program point L871(line 871) no Hoare annotation was computed. [2020-09-04 13:29:09,588 INFO L264 CegarLoopResult]: At program point L871-2(line 871) the Hoare annotation is: (or (not (= |__getMemory_#in~size| 8)) (not (= |old(~guard_malloc_counter~0.base)| 0)) (not (= ~elem~0.offset 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))) [2020-09-04 13:29:09,589 INFO L268 CegarLoopResult]: For program point L871-3(line 871) no Hoare annotation was computed. [2020-09-04 13:29:09,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:29:09 BoogieIcfgContainer [2020-09-04 13:29:09,594 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:29:09,596 INFO L168 Benchmark]: Toolchain (without parser) took 24622.30 ms. Allocated memory was 139.5 MB in the beginning and 449.3 MB in the end (delta: 309.9 MB). Free memory was 101.2 MB in the beginning and 215.0 MB in the end (delta: -113.8 MB). Peak memory consumption was 298.7 MB. Max. memory is 7.1 GB. [2020-09-04 13:29:09,597 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:29:09,598 INFO L168 Benchmark]: CACSL2BoogieTranslator took 710.09 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.0 MB in the beginning and 167.9 MB in the end (delta: -66.9 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-09-04 13:29:09,599 INFO L168 Benchmark]: Boogie Preprocessor took 65.25 ms. Allocated memory is still 203.4 MB. Free memory was 167.9 MB in the beginning and 165.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:29:09,599 INFO L168 Benchmark]: RCFGBuilder took 690.62 ms. Allocated memory is still 203.4 MB. Free memory was 165.3 MB in the beginning and 119.4 MB in the end (delta: 45.9 MB). Peak memory consumption was 45.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:29:09,600 INFO L168 Benchmark]: TraceAbstraction took 23151.21 ms. Allocated memory was 203.4 MB in the beginning and 449.3 MB in the end (delta: 245.9 MB). Free memory was 119.4 MB in the beginning and 215.0 MB in the end (delta: -95.6 MB). Peak memory consumption was 252.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:29:09,604 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 710.09 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.0 MB in the beginning and 167.9 MB in the end (delta: -66.9 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.25 ms. Allocated memory is still 203.4 MB. Free memory was 167.9 MB in the beginning and 165.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 690.62 ms. Allocated memory is still 203.4 MB. Free memory was 165.3 MB in the beginning and 119.4 MB in the end (delta: 45.9 MB). Peak memory consumption was 45.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23151.21 ms. Allocated memory was 203.4 MB in the beginning and 449.3 MB in the end (delta: 245.9 MB). Free memory was 119.4 MB in the beginning and 215.0 MB in the end (delta: -95.6 MB). Peak memory consumption was 252.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 20.8s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 10.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 387 SDtfs, 660 SDslu, 1183 SDs, 0 SdLazy, 6446 SolverSat, 692 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 828 GetRequests, 483 SyntacticMatches, 6 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1890 ImplicationChecksByTransitivity, 8.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 49 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 76 PreInvPairs, 87 NumberOfFragments, 667 HoareAnnotationTreeSize, 76 FomulaSimplifications, 3422 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 18 FomulaSimplificationsInter, 1891 FormulaSimplificationTreeSizeReductionInter, 1.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 943 NumberOfCodeBlocks, 943 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 923 ConstructedInterpolants, 0 QuantifiedInterpolants, 183362 SizeOfPredicates, 57 NumberOfNonLiveVariables, 2559 ConjunctsInSsa, 233 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 199/305 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...