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/list-properties/list_search-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:00:41,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:00:41,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:00:41,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:00:41,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:00:41,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:00:41,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:00:41,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:00:41,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:00:41,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:00:41,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:00:41,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:00:41,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:00:41,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:00:41,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:00:41,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:00:41,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:00:41,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:00:41,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:00:41,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:00:41,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:00:41,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:00:41,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:00:41,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:00:41,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:00:41,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:00:41,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:00:41,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:00:41,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:00:41,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:00:41,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:00:41,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:00:41,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:00:41,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:00:41,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:00:41,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:00:41,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:00:41,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:00:41,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:00:41,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:00:41,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:00:41,770 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-20 13:00:41,791 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:00:41,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:00:41,795 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:00:41,795 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:00:41,796 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:00:41,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:00:41,796 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:00:41,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:00:41,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:00:41,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:00:41,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:00:41,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:00:41,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:00:41,798 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:00:41,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:00:41,799 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:00:41,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:00:41,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:00:41,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:00:41,799 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:00:41,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:00:41,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:00:41,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:00:41,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:00:41,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:00:41,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:00:41,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:00:41,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:00:41,803 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:00:41,847 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:00:41,859 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:00:41,862 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:00:41,864 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:00:41,864 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:00:41,865 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_search-2.i [2019-09-20 13:00:41,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4fba635c/dcb0f0fdaaa3425396878ac85c7c0228/FLAG1df2000c6 [2019-09-20 13:00:42,536 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:00:42,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_search-2.i [2019-09-20 13:00:42,551 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4fba635c/dcb0f0fdaaa3425396878ac85c7c0228/FLAG1df2000c6 [2019-09-20 13:00:42,764 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4fba635c/dcb0f0fdaaa3425396878ac85c7c0228 [2019-09-20 13:00:42,774 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:00:42,778 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:00:42,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:00:42,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:00:42,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:00:42,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:00:42" (1/1) ... [2019-09-20 13:00:42,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b422b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:00:42, skipping insertion in model container [2019-09-20 13:00:42,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:00:42" (1/1) ... [2019-09-20 13:00:42,794 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:00:42,839 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:00:43,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:00:43,386 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:00:43,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:00:43,564 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:00:43,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:00:43 WrapperNode [2019-09-20 13:00:43,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:00:43,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:00:43,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:00:43,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:00:43,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:00:43" (1/1) ... [2019-09-20 13:00:43,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:00:43" (1/1) ... [2019-09-20 13:00:43,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:00:43" (1/1) ... [2019-09-20 13:00:43,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:00:43" (1/1) ... [2019-09-20 13:00:43,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:00:43" (1/1) ... [2019-09-20 13:00:43,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:00:43" (1/1) ... [2019-09-20 13:00:43,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:00:43" (1/1) ... [2019-09-20 13:00:43,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:00:43,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:00:43,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:00:43,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:00:43,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:00:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:00:43,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:00:43,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:00:43,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 13:00:43,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-20 13:00:43,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-20 13:00:43,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-09-20 13:00:43,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-09-20 13:00:43,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-09-20 13:00:43,701 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2019-09-20 13:00:43,701 INFO L138 BoogieDeclarations]: Found implementation of procedure delete_list [2019-09-20 13:00:43,701 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2019-09-20 13:00:43,701 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:00:43,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:00:43,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 13:00:43,702 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2019-09-20 13:00:43,702 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2019-09-20 13:00:43,702 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2019-09-20 13:00:43,702 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2019-09-20 13:00:43,703 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2019-09-20 13:00:43,703 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2019-09-20 13:00:43,703 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2019-09-20 13:00:43,703 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2019-09-20 13:00:43,703 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2019-09-20 13:00:43,703 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2019-09-20 13:00:43,703 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2019-09-20 13:00:43,704 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2019-09-20 13:00:43,704 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2019-09-20 13:00:43,704 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2019-09-20 13:00:43,704 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2019-09-20 13:00:43,704 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2019-09-20 13:00:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2019-09-20 13:00:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2019-09-20 13:00:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2019-09-20 13:00:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2019-09-20 13:00:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2019-09-20 13:00:43,705 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2019-09-20 13:00:43,706 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2019-09-20 13:00:43,706 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2019-09-20 13:00:43,706 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2019-09-20 13:00:43,706 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2019-09-20 13:00:43,706 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2019-09-20 13:00:43,706 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2019-09-20 13:00:43,707 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-09-20 13:00:43,707 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2019-09-20 13:00:43,707 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2019-09-20 13:00:43,707 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2019-09-20 13:00:43,707 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2019-09-20 13:00:43,707 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2019-09-20 13:00:43,708 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2019-09-20 13:00:43,708 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2019-09-20 13:00:43,708 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2019-09-20 13:00:43,708 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2019-09-20 13:00:43,708 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:00:43,708 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2019-09-20 13:00:43,709 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2019-09-20 13:00:43,709 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2019-09-20 13:00:43,709 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2019-09-20 13:00:43,709 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2019-09-20 13:00:43,709 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2019-09-20 13:00:43,709 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2019-09-20 13:00:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2019-09-20 13:00:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2019-09-20 13:00:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2019-09-20 13:00:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2019-09-20 13:00:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2019-09-20 13:00:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2019-09-20 13:00:43,711 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2019-09-20 13:00:43,711 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2019-09-20 13:00:43,711 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2019-09-20 13:00:43,711 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2019-09-20 13:00:43,711 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2019-09-20 13:00:43,712 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2019-09-20 13:00:43,712 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2019-09-20 13:00:43,712 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2019-09-20 13:00:43,712 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2019-09-20 13:00:43,712 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2019-09-20 13:00:43,712 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2019-09-20 13:00:43,713 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2019-09-20 13:00:43,713 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2019-09-20 13:00:43,713 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2019-09-20 13:00:43,713 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2019-09-20 13:00:43,713 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2019-09-20 13:00:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2019-09-20 13:00:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2019-09-20 13:00:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2019-09-20 13:00:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2019-09-20 13:00:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-09-20 13:00:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2019-09-20 13:00:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2019-09-20 13:00:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2019-09-20 13:00:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2019-09-20 13:00:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2019-09-20 13:00:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2019-09-20 13:00:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2019-09-20 13:00:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2019-09-20 13:00:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2019-09-20 13:00:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2019-09-20 13:00:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2019-09-20 13:00:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2019-09-20 13:00:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2019-09-20 13:00:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2019-09-20 13:00:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2019-09-20 13:00:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2019-09-20 13:00:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2019-09-20 13:00:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2019-09-20 13:00:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2019-09-20 13:00:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2019-09-20 13:00:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2019-09-20 13:00:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2019-09-20 13:00:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2019-09-20 13:00:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2019-09-20 13:00:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2019-09-20 13:00:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2019-09-20 13:00:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2019-09-20 13:00:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-20 13:00:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-20 13:00:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-20 13:00:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-20 13:00:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-20 13:00:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-20 13:00:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-20 13:00:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-20 13:00:43,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-20 13:00:43,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-20 13:00:43,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-20 13:00:43,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-20 13:00:43,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-20 13:00:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-20 13:00:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-20 13:00:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-20 13:00:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-20 13:00:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-20 13:00:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-09-20 13:00:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-09-20 13:00:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-09-20 13:00:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-20 13:00:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-20 13:00:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-20 13:00:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-20 13:00:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-20 13:00:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-20 13:00:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-20 13:00:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-20 13:00:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-20 13:00:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-20 13:00:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-20 13:00:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-20 13:00:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-20 13:00:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-20 13:00:43,726 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-20 13:00:43,726 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-20 13:00:43,726 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-20 13:00:43,726 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-20 13:00:43,726 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-20 13:00:43,726 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-20 13:00:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-20 13:00:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-20 13:00:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-20 13:00:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-20 13:00:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-20 13:00:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-20 13:00:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-20 13:00:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-20 13:00:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-20 13:00:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-20 13:00:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-20 13:00:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-20 13:00:43,729 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-20 13:00:43,729 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-20 13:00:43,729 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:00:43,729 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-20 13:00:43,729 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-20 13:00:43,729 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:00:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-20 13:00:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-20 13:00:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-20 13:00:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-20 13:00:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-20 13:00:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-20 13:00:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-20 13:00:43,731 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-20 13:00:43,731 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-20 13:00:43,731 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-20 13:00:43,731 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-20 13:00:43,731 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-20 13:00:43,732 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-20 13:00:43,732 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-20 13:00:43,732 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-20 13:00:43,732 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-20 13:00:43,732 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-20 13:00:43,732 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-20 13:00:43,732 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-20 13:00:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-20 13:00:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-20 13:00:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-20 13:00:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-20 13:00:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-20 13:00:43,733 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-20 13:00:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-20 13:00:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-20 13:00:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-20 13:00:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-20 13:00:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-20 13:00:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-20 13:00:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-20 13:00:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-20 13:00:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-20 13:00:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-20 13:00:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-20 13:00:43,735 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-20 13:00:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-20 13:00:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-20 13:00:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-20 13:00:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-20 13:00:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-20 13:00:43,736 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-20 13:00:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-20 13:00:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-20 13:00:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-20 13:00:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-20 13:00:43,737 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-20 13:00:43,738 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2019-09-20 13:00:43,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:00:43,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:00:43,738 INFO L130 BoogieDeclarations]: Found specification of procedure delete_list [2019-09-20 13:00:43,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:00:43,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:00:43,739 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2019-09-20 13:00:43,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:00:43,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:00:43,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:00:43,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:00:43,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:00:44,352 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:00:44,352 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-20 13:00:44,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:00:44 BoogieIcfgContainer [2019-09-20 13:00:44,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:00:44,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:00:44,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:00:44,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:00:44,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:00:42" (1/3) ... [2019-09-20 13:00:44,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e5ade3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:00:44, skipping insertion in model container [2019-09-20 13:00:44,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:00:43" (2/3) ... [2019-09-20 13:00:44,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e5ade3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:00:44, skipping insertion in model container [2019-09-20 13:00:44,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:00:44" (3/3) ... [2019-09-20 13:00:44,362 INFO L109 eAbstractionObserver]: Analyzing ICFG list_search-2.i [2019-09-20 13:00:44,371 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:00:44,379 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:00:44,396 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:00:44,428 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:00:44,429 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:00:44,429 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:00:44,429 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:00:44,430 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:00:44,430 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:00:44,430 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:00:44,430 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:00:44,430 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:00:44,449 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2019-09-20 13:00:44,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-20 13:00:44,456 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:00:44,457 INFO L407 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:00:44,459 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:00:44,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:00:44,465 INFO L82 PathProgramCache]: Analyzing trace with hash 694957185, now seen corresponding path program 1 times [2019-09-20 13:00:44,467 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:00:44,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:00:44,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:00:44,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:00:44,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:00:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:00:44,723 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-09-20 13:00:44,726 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:00:44,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:00:44,730 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:00:44,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:00:44,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:00:44,746 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2019-09-20 13:00:44,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:00:44,772 INFO L93 Difference]: Finished difference Result 84 states and 109 transitions. [2019-09-20 13:00:44,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:00:44,774 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-09-20 13:00:44,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:00:44,783 INFO L225 Difference]: With dead ends: 84 [2019-09-20 13:00:44,783 INFO L226 Difference]: Without dead ends: 34 [2019-09-20 13:00:44,787 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:00:44,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-09-20 13:00:44,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-09-20 13:00:44,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-09-20 13:00:44,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2019-09-20 13:00:44,829 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 46 [2019-09-20 13:00:44,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:00:44,831 INFO L475 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2019-09-20 13:00:44,831 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:00:44,831 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2019-09-20 13:00:44,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-09-20 13:00:44,833 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:00:44,834 INFO L407 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:00:44,834 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:00:44,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:00:44,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1251884926, now seen corresponding path program 1 times [2019-09-20 13:00:44,835 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:00:44,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:00:44,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:00:44,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:00:44,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:00:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:00:45,017 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-09-20 13:00:45,017 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:00:45,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:00:45,019 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:00:45,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:00:45,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:00:45,020 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 5 states. [2019-09-20 13:00:45,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:00:45,103 INFO L93 Difference]: Finished difference Result 63 states and 78 transitions. [2019-09-20 13:00:45,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:00:45,103 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2019-09-20 13:00:45,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:00:45,105 INFO L225 Difference]: With dead ends: 63 [2019-09-20 13:00:45,105 INFO L226 Difference]: Without dead ends: 38 [2019-09-20 13:00:45,107 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:00:45,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-09-20 13:00:45,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2019-09-20 13:00:45,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-09-20 13:00:45,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2019-09-20 13:00:45,116 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 48 [2019-09-20 13:00:45,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:00:45,116 INFO L475 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2019-09-20 13:00:45,116 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:00:45,117 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2019-09-20 13:00:45,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-09-20 13:00:45,118 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:00:45,118 INFO L407 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:00:45,119 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:00:45,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:00:45,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1415498856, now seen corresponding path program 1 times [2019-09-20 13:00:45,119 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:00:45,119 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:00:45,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:00:45,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:00:45,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:00:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:00:45,397 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-20 13:00:45,398 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:00:45,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-09-20 13:00:45,399 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-20 13:00:45,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-20 13:00:45,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:00:45,400 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand 10 states. [2019-09-20 13:00:45,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:00:45,816 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2019-09-20 13:00:45,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-20 13:00:45,817 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2019-09-20 13:00:45,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:00:45,820 INFO L225 Difference]: With dead ends: 55 [2019-09-20 13:00:45,821 INFO L226 Difference]: Without dead ends: 46 [2019-09-20 13:00:45,822 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2019-09-20 13:00:45,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-09-20 13:00:45,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2019-09-20 13:00:45,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-20 13:00:45,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2019-09-20 13:00:45,834 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 49 [2019-09-20 13:00:45,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:00:45,837 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2019-09-20 13:00:45,838 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-20 13:00:45,838 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2019-09-20 13:00:45,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-09-20 13:00:45,839 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:00:45,839 INFO L407 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:00:45,840 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:00:45,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:00:45,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1022471846, now seen corresponding path program 1 times [2019-09-20 13:00:45,841 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:00:45,841 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:00:45,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:00:45,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:00:45,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:00:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:00:45,969 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-20 13:00:45,969 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:00:45,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:00:45,970 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:00:45,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:00:45,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:00:45,970 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 7 states. [2019-09-20 13:00:46,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:00:46,097 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2019-09-20 13:00:46,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:00:46,098 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2019-09-20 13:00:46,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:00:46,099 INFO L225 Difference]: With dead ends: 53 [2019-09-20 13:00:46,099 INFO L226 Difference]: Without dead ends: 41 [2019-09-20 13:00:46,100 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-09-20 13:00:46,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-09-20 13:00:46,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2019-09-20 13:00:46,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-09-20 13:00:46,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2019-09-20 13:00:46,107 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 49 [2019-09-20 13:00:46,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:00:46,108 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2019-09-20 13:00:46,108 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:00:46,108 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2019-09-20 13:00:46,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-20 13:00:46,109 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:00:46,110 INFO L407 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:00:46,110 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:00:46,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:00:46,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1923734059, now seen corresponding path program 1 times [2019-09-20 13:00:46,111 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:00:46,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:00:46,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:00:46,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:00:46,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:00:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:00:46,351 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-09-20 13:00:46,351 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:00:46,351 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:00:46,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:00:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:00:46,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-20 13:00:46,568 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:00:46,661 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-20 13:00:46,666 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:00:46,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2019-09-20 13:00:46,669 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-20 13:00:46,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-20 13:00:46,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2019-09-20 13:00:46,670 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 14 states. [2019-09-20 13:00:47,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:00:47,209 INFO L93 Difference]: Finished difference Result 82 states and 93 transitions. [2019-09-20 13:00:47,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-20 13:00:47,212 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2019-09-20 13:00:47,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:00:47,213 INFO L225 Difference]: With dead ends: 82 [2019-09-20 13:00:47,213 INFO L226 Difference]: Without dead ends: 44 [2019-09-20 13:00:47,214 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2019-09-20 13:00:47,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-09-20 13:00:47,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2019-09-20 13:00:47,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-09-20 13:00:47,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2019-09-20 13:00:47,220 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 52 [2019-09-20 13:00:47,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:00:47,220 INFO L475 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2019-09-20 13:00:47,220 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-20 13:00:47,220 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2019-09-20 13:00:47,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-20 13:00:47,222 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:00:47,222 INFO L407 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:00:47,222 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:00:47,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:00:47,223 INFO L82 PathProgramCache]: Analyzing trace with hash -267373227, now seen corresponding path program 1 times [2019-09-20 13:00:47,223 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:00:47,223 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:00:47,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:00:47,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:00:47,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:00:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:00:47,375 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-20 13:00:47,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:00:47,375 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:00:47,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:00:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:00:47,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 30 conjunts are in the unsatisfiable core [2019-09-20 13:00:47,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:00:47,619 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:00:47,694 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2019-09-20 13:00:47,694 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:00:47,701 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2019-09-20 13:00:47,701 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-20 13:00:47,717 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:00:47,718 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-09-20 13:00:47,718 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:43, output treesize:23 [2019-09-20 13:00:47,818 INFO L172 IndexEqualityManager]: detected equality via solver [2019-09-20 13:00:47,821 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:00:47,822 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 11 [2019-09-20 13:00:47,822 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:00:47,826 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:00:47,826 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:00:47,826 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:8 [2019-09-20 13:00:47,850 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Stream Closed [2019-09-20 13:00:47,855 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:00:47,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 19 [2019-09-20 13:00:47,856 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-20 13:00:47,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-20 13:00:47,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:00:47,857 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 19 states. [2019-09-20 13:00:48,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:00:48,602 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2019-09-20 13:00:48,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-20 13:00:48,603 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2019-09-20 13:00:48,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:00:48,604 INFO L225 Difference]: With dead ends: 64 [2019-09-20 13:00:48,604 INFO L226 Difference]: Without dead ends: 47 [2019-09-20 13:00:48,606 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=241, Invalid=949, Unknown=0, NotChecked=0, Total=1190 [2019-09-20 13:00:48,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-09-20 13:00:48,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2019-09-20 13:00:48,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-09-20 13:00:48,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2019-09-20 13:00:48,613 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 52 [2019-09-20 13:00:48,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:00:48,613 INFO L475 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2019-09-20 13:00:48,614 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-20 13:00:48,614 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2019-09-20 13:00:48,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-09-20 13:00:48,615 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:00:48,615 INFO L407 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:00:48,615 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:00:48,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:00:48,616 INFO L82 PathProgramCache]: Analyzing trace with hash 740526843, now seen corresponding path program 2 times [2019-09-20 13:00:48,616 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:00:48,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:00:48,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:00:48,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:00:48,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:00:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:00:48,834 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-09-20 13:00:48,835 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:00:48,835 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:00:48,962 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-20 13:00:49,043 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-20 13:00:49,043 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-20 13:00:49,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-20 13:00:49,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:00:49,062 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-09-20 13:00:49,062 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:00:49,066 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:00:49,067 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:00:49,067 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2019-09-20 13:00:49,176 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-20 13:00:49,181 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:00:49,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 18 [2019-09-20 13:00:49,182 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-20 13:00:49,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-20 13:00:49,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2019-09-20 13:00:49,183 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 18 states. [2019-09-20 13:00:49,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:00:49,781 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2019-09-20 13:00:49,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-20 13:00:49,782 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 53 [2019-09-20 13:00:49,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:00:49,783 INFO L225 Difference]: With dead ends: 64 [2019-09-20 13:00:49,783 INFO L226 Difference]: Without dead ends: 51 [2019-09-20 13:00:49,784 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=196, Invalid=926, Unknown=0, NotChecked=0, Total=1122 [2019-09-20 13:00:49,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-09-20 13:00:49,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2019-09-20 13:00:49,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-09-20 13:00:49,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2019-09-20 13:00:49,791 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 53 [2019-09-20 13:00:49,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:00:49,792 INFO L475 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2019-09-20 13:00:49,792 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-09-20 13:00:49,792 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2019-09-20 13:00:49,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-09-20 13:00:49,793 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:00:49,793 INFO L407 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:00:49,793 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:00:49,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:00:49,794 INFO L82 PathProgramCache]: Analyzing trace with hash -784314466, now seen corresponding path program 3 times [2019-09-20 13:00:49,794 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:00:49,794 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:00:49,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:00:49,798 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-20 13:00:49,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:00:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:00:50,599 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:00:50,600 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:00:50,600 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:00:50,709 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-20 13:00:50,773 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-09-20 13:00:50,773 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-20 13:00:50,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 68 conjunts are in the unsatisfiable core [2019-09-20 13:00:50,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:00:50,792 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-09-20 13:00:50,792 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:00:50,797 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:00:50,797 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:00:50,797 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-09-20 13:00:50,833 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:00:50,845 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2019-09-20 13:00:50,845 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:00:50,861 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2019-09-20 13:00:50,861 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-20 13:00:50,900 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:00:50,908 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2019-09-20 13:00:50,909 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-09-20 13:00:50,921 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2019-09-20 13:00:50,922 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-09-20 13:00:50,946 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:00:50,947 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-09-20 13:00:50,947 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:79, output treesize:39 [2019-09-20 13:00:51,138 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:00:51,153 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:00:51,156 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:00:51,166 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:00:51,167 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-09-20 13:00:51,168 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:65, output treesize:41 [2019-09-20 13:00:55,516 WARN L191 SmtUtils]: Spent 1.60 s on a formula simplification that was a NOOP. DAG size: 30 [2019-09-20 13:00:56,983 WARN L191 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 30 [2019-09-20 13:00:56,988 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:00:57,032 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:00:57,033 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 58 [2019-09-20 13:00:57,034 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:00:57,084 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:00:57,097 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:00:57,098 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 58 [2019-09-20 13:00:57,099 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-09-20 13:00:57,144 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:00:57,146 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_BEFORE_CALL_2|, v_prenex_1], 4=[|v_#memory_$Pointer$.base_BEFORE_CALL_2|, v_prenex_2]} [2019-09-20 13:00:57,153 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-20 13:00:57,157 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 48 [2019-09-20 13:00:57,157 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-09-20 13:00:57,200 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:00:57,207 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-20 13:00:57,211 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 48 [2019-09-20 13:00:57,211 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-09-20 13:00:57,248 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:00:57,255 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-20 13:00:57,259 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 51 [2019-09-20 13:00:57,260 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-09-20 13:00:57,296 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:00:57,301 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-09-20 13:00:57,306 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 51 [2019-09-20 13:00:57,307 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-09-20 13:00:57,372 INFO L567 ElimStorePlain]: treesize reduction 4, result has 95.9 percent of original size [2019-09-20 13:00:57,374 INFO L496 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-1 vars, 4 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-09-20 13:00:57,374 INFO L221 ElimStorePlain]: Needed 7 recursive calls to eliminate 12 variables, input treesize:109, output treesize:65 [2019-09-20 13:00:58,068 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-09-20 13:00:58,080 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:00:58,081 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18] total 40 [2019-09-20 13:00:58,081 INFO L454 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-09-20 13:00:58,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-09-20 13:00:58,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1431, Unknown=3, NotChecked=0, Total=1560 [2019-09-20 13:00:58,083 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 40 states. [2019-09-20 13:01:02,237 WARN L191 SmtUtils]: Spent 3.32 s on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2019-09-20 13:01:10,237 WARN L191 SmtUtils]: Spent 7.95 s on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2019-09-20 13:01:13,459 WARN L191 SmtUtils]: Spent 3.17 s on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2019-09-20 13:01:17,098 WARN L191 SmtUtils]: Spent 3.46 s on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2019-09-20 13:01:25,211 WARN L191 SmtUtils]: Spent 8.07 s on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2019-09-20 13:01:29,483 WARN L191 SmtUtils]: Spent 4.03 s on a formula simplification. DAG size of input: 60 DAG size of output: 48