/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.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 12:02:11,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 12:02:11,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 12:02:11,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 12:02:11,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 12:02:11,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 12:02:11,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 12:02:11,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 12:02:11,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 12:02:11,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 12:02:11,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 12:02:11,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 12:02:11,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 12:02:11,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 12:02:11,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 12:02:11,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 12:02:11,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 12:02:11,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 12:02:11,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 12:02:11,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 12:02:11,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 12:02:11,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 12:02:11,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 12:02:11,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 12:02:11,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 12:02:11,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 12:02:11,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 12:02:11,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 12:02:11,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 12:02:11,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 12:02:11,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 12:02:11,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 12:02:11,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 12:02:11,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 12:02:11,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 12:02:11,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 12:02:11,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 12:02:11,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 12:02:11,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 12:02:11,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 12:02:11,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 12:02:11,652 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 12:02:11,666 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 12:02:11,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 12:02:11,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 12:02:11,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 12:02:11,668 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 12:02:11,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 12:02:11,669 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 12:02:11,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 12:02:11,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 12:02:11,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 12:02:11,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 12:02:11,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 12:02:11,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 12:02:11,670 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 12:02:11,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 12:02:11,671 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 12:02:11,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 12:02:11,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 12:02:11,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 12:02:11,671 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 12:02:11,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 12:02:11,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:02:11,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 12:02:11,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 12:02:11,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 12:02:11,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 12:02:11,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 12:02:11,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 12:02:11,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 12:02:11,673 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 12:02:11,951 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 12:02:11,965 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 12:02:11,969 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 12:02:11,970 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 12:02:11,971 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 12:02:11,972 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-07-17 12:02:12,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad0af2a28/a0e2031b3b2640989e09971f06d17d1b/FLAGdc29c8a4a [2020-07-17 12:02:12,608 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 12:02:12,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-07-17 12:02:12,620 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad0af2a28/a0e2031b3b2640989e09971f06d17d1b/FLAGdc29c8a4a [2020-07-17 12:02:12,950 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad0af2a28/a0e2031b3b2640989e09971f06d17d1b [2020-07-17 12:02:12,960 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 12:02:12,963 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 12:02:12,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 12:02:12,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 12:02:12,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 12:02:12,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:02:12" (1/1) ... [2020-07-17 12:02:12,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1da9f85d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:12, skipping insertion in model container [2020-07-17 12:02:12,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:02:12" (1/1) ... [2020-07-17 12:02:12,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 12:02:13,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 12:02:13,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:02:13,457 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 12:02:13,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:02:13,627 INFO L208 MainTranslator]: Completed translation [2020-07-17 12:02:13,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:13 WrapperNode [2020-07-17 12:02:13,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 12:02:13,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 12:02:13,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 12:02:13,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 12:02:13,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:13" (1/1) ... [2020-07-17 12:02:13,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:13" (1/1) ... [2020-07-17 12:02:13,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:13" (1/1) ... [2020-07-17 12:02:13,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:13" (1/1) ... [2020-07-17 12:02:13,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:13" (1/1) ... [2020-07-17 12:02:13,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:13" (1/1) ... [2020-07-17 12:02:13,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:13" (1/1) ... [2020-07-17 12:02:13,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 12:02:13,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 12:02:13,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 12:02:13,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 12:02:13,690 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:02:13,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 12:02:13,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 12:02:13,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-17 12:02:13,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-07-17 12:02:13,772 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-07-17 12:02:13,772 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-07-17 12:02:13,773 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-07-17 12:02:13,774 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 12:02:13,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 12:02:13,774 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-17 12:02:13,775 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-07-17 12:02:13,776 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-07-17 12:02:13,776 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-07-17 12:02:13,777 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-07-17 12:02:13,777 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-07-17 12:02:13,778 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-07-17 12:02:13,778 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-07-17 12:02:13,778 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-07-17 12:02:13,778 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-07-17 12:02:13,779 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-07-17 12:02:13,779 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-07-17 12:02:13,780 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-07-17 12:02:13,780 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-07-17 12:02:13,780 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-07-17 12:02:13,780 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-07-17 12:02:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-07-17 12:02:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-07-17 12:02:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-07-17 12:02:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-07-17 12:02:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-07-17 12:02:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-07-17 12:02:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-07-17 12:02:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-07-17 12:02:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-07-17 12:02:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-07-17 12:02:13,783 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-07-17 12:02:13,784 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-07-17 12:02:13,784 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-07-17 12:02:13,784 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-17 12:02:13,784 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-07-17 12:02:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-07-17 12:02:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-07-17 12:02:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-07-17 12:02:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-07-17 12:02:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-07-17 12:02:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-07-17 12:02:13,785 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-07-17 12:02:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-07-17 12:02:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-17 12:02:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-07-17 12:02:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-07-17 12:02:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-07-17 12:02:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-07-17 12:02:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-07-17 12:02:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-07-17 12:02:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-07-17 12:02:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-07-17 12:02:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-07-17 12:02:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-07-17 12:02:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-07-17 12:02:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-07-17 12:02:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-07-17 12:02:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-07-17 12:02:13,788 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-07-17 12:02:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-17 12:02:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-07-17 12:02:13,789 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-07-17 12:02:13,790 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-07-17 12:02:13,790 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-07-17 12:02:13,790 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-07-17 12:02:13,790 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-07-17 12:02:13,790 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-07-17 12:02:13,791 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-07-17 12:02:13,791 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-07-17 12:02:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-07-17 12:02:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-07-17 12:02:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-07-17 12:02:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-07-17 12:02:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-07-17 12:02:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-07-17 12:02:13,792 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-07-17 12:02:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-07-17 12:02:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-07-17 12:02:13,793 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-07-17 12:02:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-07-17 12:02:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-07-17 12:02:13,794 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-07-17 12:02:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-07-17 12:02:13,795 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-07-17 12:02:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-07-17 12:02:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-07-17 12:02:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-07-17 12:02:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-07-17 12:02:13,796 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-07-17 12:02:13,797 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-07-17 12:02:13,797 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-07-17 12:02:13,797 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-07-17 12:02:13,797 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-07-17 12:02:13,797 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-07-17 12:02:13,797 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-07-17 12:02:13,797 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-07-17 12:02:13,798 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-07-17 12:02:13,798 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-07-17 12:02:13,798 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-07-17 12:02:13,798 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-07-17 12:02:13,798 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-07-17 12:02:13,798 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-07-17 12:02:13,798 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-07-17 12:02:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-07-17 12:02:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-07-17 12:02:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-07-17 12:02:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 12:02:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-17 12:02:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-17 12:02:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-17 12:02:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-17 12:02:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-07-17 12:02:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-17 12:02:13,801 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-07-17 12:02:13,802 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-07-17 12:02:13,802 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-07-17 12:02:13,802 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-07-17 12:02:13,803 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-07-17 12:02:13,804 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-07-17 12:02:13,804 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-07-17 12:02:13,804 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-07-17 12:02:13,804 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-07-17 12:02:13,804 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-07-17 12:02:13,804 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-07-17 12:02:13,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 12:02:13,805 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-07-17 12:02:13,805 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-07-17 12:02:13,805 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-07-17 12:02:13,806 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-07-17 12:02:13,806 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 12:02:13,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 12:02:13,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 12:02:13,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-17 12:02:13,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 12:02:13,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-17 12:02:13,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-17 12:02:13,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 12:02:14,301 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 12:02:14,302 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 12:02:14,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:02:14 BoogieIcfgContainer [2020-07-17 12:02:14,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 12:02:14,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 12:02:14,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 12:02:14,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 12:02:14,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 12:02:12" (1/3) ... [2020-07-17 12:02:14,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@413cd393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:02:14, skipping insertion in model container [2020-07-17 12:02:14,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:13" (2/3) ... [2020-07-17 12:02:14,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@413cd393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:02:14, skipping insertion in model container [2020-07-17 12:02:14,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:02:14" (3/3) ... [2020-07-17 12:02:14,315 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2020-07-17 12:02:14,328 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 12:02:14,337 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 12:02:14,353 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 12:02:14,378 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 12:02:14,378 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 12:02:14,378 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 12:02:14,379 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 12:02:14,379 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 12:02:14,379 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 12:02:14,379 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 12:02:14,379 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 12:02:14,401 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-07-17 12:02:14,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-17 12:02:14,407 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:14,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:02:14,409 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:14,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:14,416 INFO L82 PathProgramCache]: Analyzing trace with hash -573637036, now seen corresponding path program 1 times [2020-07-17 12:02:14,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:14,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582648064] [2020-07-17 12:02:14,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:14,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:02:14,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582648064] [2020-07-17 12:02:14,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:02:14,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-17 12:02:14,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020112280] [2020-07-17 12:02:14,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 12:02:14,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:14,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 12:02:14,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-17 12:02:14,901 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 7 states. [2020-07-17 12:02:15,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:15,328 INFO L93 Difference]: Finished difference Result 90 states and 119 transitions. [2020-07-17 12:02:15,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-17 12:02:15,330 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-07-17 12:02:15,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:15,343 INFO L225 Difference]: With dead ends: 90 [2020-07-17 12:02:15,344 INFO L226 Difference]: Without dead ends: 44 [2020-07-17 12:02:15,349 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 [2020-07-17 12:02:15,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-17 12:02:15,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-07-17 12:02:15,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-17 12:02:15,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-07-17 12:02:15,408 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 13 [2020-07-17 12:02:15,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:15,408 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-07-17 12:02:15,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 12:02:15,409 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-07-17 12:02:15,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-17 12:02:15,411 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:15,412 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:02:15,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 12:02:15,413 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:15,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:15,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1917870949, now seen corresponding path program 1 times [2020-07-17 12:02:15,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:15,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677331840] [2020-07-17 12:02:15,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-17 12:02:15,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677331840] [2020-07-17 12:02:15,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471336808] [2020-07-17 12:02:15,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:02:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:15,879 INFO L264 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-17 12:02:15,889 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:02:15,965 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-17 12:02:15,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:02:15,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 9 [2020-07-17 12:02:15,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528870380] [2020-07-17 12:02:15,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 12:02:15,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:15,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 12:02:15,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-17 12:02:15,973 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 9 states. [2020-07-17 12:02:16,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:16,276 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2020-07-17 12:02:16,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-17 12:02:16,277 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-07-17 12:02:16,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:16,279 INFO L225 Difference]: With dead ends: 71 [2020-07-17 12:02:16,280 INFO L226 Difference]: Without dead ends: 49 [2020-07-17 12:02:16,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-17 12:02:16,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-17 12:02:16,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-07-17 12:02:16,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-07-17 12:02:16,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-07-17 12:02:16,311 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 38 [2020-07-17 12:02:16,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:16,312 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-07-17 12:02:16,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 12:02:16,312 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-07-17 12:02:16,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-17 12:02:16,314 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:16,315 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:02:16,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-17 12:02:16,529 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:16,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:16,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1948890756, now seen corresponding path program 1 times [2020-07-17 12:02:16,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:16,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153153705] [2020-07-17 12:02:16,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:16,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:16,721 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-17 12:02:16,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153153705] [2020-07-17 12:02:16,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:02:16,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-17 12:02:16,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134870534] [2020-07-17 12:02:16,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 12:02:16,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:16,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 12:02:16,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-17 12:02:16,724 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 9 states. [2020-07-17 12:02:16,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:16,913 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2020-07-17 12:02:16,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-17 12:02:16,914 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-07-17 12:02:16,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:16,915 INFO L225 Difference]: With dead ends: 69 [2020-07-17 12:02:16,916 INFO L226 Difference]: Without dead ends: 44 [2020-07-17 12:02:16,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-17 12:02:16,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-17 12:02:16,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-07-17 12:02:16,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-17 12:02:16,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-07-17 12:02:16,927 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 38 [2020-07-17 12:02:16,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:16,927 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-07-17 12:02:16,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 12:02:16,928 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-07-17 12:02:16,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-17 12:02:16,929 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:16,929 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:02:16,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 12:02:16,930 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:16,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:16,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1655487749, now seen corresponding path program 1 times [2020-07-17 12:02:16,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:16,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88975328] [2020-07-17 12:02:16,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:17,273 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-17 12:02:17,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88975328] [2020-07-17 12:02:17,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936156209] [2020-07-17 12:02:17,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:02:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:17,424 INFO L264 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-17 12:02:17,431 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:02:17,751 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-17 12:02:17,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-17 12:02:17,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14] total 26 [2020-07-17 12:02:17,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246679582] [2020-07-17 12:02:17,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-17 12:02:17,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:17,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-17 12:02:17,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2020-07-17 12:02:17,755 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 13 states. [2020-07-17 12:02:18,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:18,348 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2020-07-17 12:02:18,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-17 12:02:18,348 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-07-17 12:02:18,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:18,351 INFO L225 Difference]: With dead ends: 73 [2020-07-17 12:02:18,351 INFO L226 Difference]: Without dead ends: 70 [2020-07-17 12:02:18,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2020-07-17 12:02:18,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-17 12:02:18,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 60. [2020-07-17 12:02:18,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-17 12:02:18,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2020-07-17 12:02:18,393 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 38 [2020-07-17 12:02:18,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:18,394 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2020-07-17 12:02:18,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-17 12:02:18,394 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2020-07-17 12:02:18,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-17 12:02:18,395 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:18,396 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:02:18,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:02:18,604 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:18,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:18,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1321471087, now seen corresponding path program 1 times [2020-07-17 12:02:18,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:18,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681061462] [2020-07-17 12:02:18,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:19,091 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-17 12:02:19,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681061462] [2020-07-17 12:02:19,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600410651] [2020-07-17 12:02:19,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:02:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:19,203 INFO L264 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-17 12:02:19,207 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:02:19,435 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:02:19,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:02:19,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 29 [2020-07-17 12:02:19,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291105874] [2020-07-17 12:02:19,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-17 12:02:19,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:19,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-17 12:02:19,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2020-07-17 12:02:19,438 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand 29 states. [2020-07-17 12:02:20,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:20,918 INFO L93 Difference]: Finished difference Result 80 states and 99 transitions. [2020-07-17 12:02:20,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-17 12:02:20,919 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 45 [2020-07-17 12:02:20,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:20,920 INFO L225 Difference]: With dead ends: 80 [2020-07-17 12:02:20,921 INFO L226 Difference]: Without dead ends: 76 [2020-07-17 12:02:20,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2020-07-17 12:02:20,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-07-17 12:02:20,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2020-07-17 12:02:20,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-07-17 12:02:20,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 85 transitions. [2020-07-17 12:02:20,941 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 85 transitions. Word has length 45 [2020-07-17 12:02:20,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:20,942 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 85 transitions. [2020-07-17 12:02:20,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-17 12:02:20,942 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 85 transitions. [2020-07-17 12:02:20,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-17 12:02:20,943 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:20,943 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:02:21,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:02:21,151 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:21,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:21,151 INFO L82 PathProgramCache]: Analyzing trace with hash 512124461, now seen corresponding path program 1 times [2020-07-17 12:02:21,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:21,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929392404] [2020-07-17 12:02:21,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-17 12:02:21,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929392404] [2020-07-17 12:02:21,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327094527] [2020-07-17 12:02:21,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:02:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:21,662 INFO L264 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-17 12:02:21,676 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:02:22,025 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:02:22,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:02:22,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 28 [2020-07-17 12:02:22,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391966873] [2020-07-17 12:02:22,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-17 12:02:22,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:22,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-17 12:02:22,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2020-07-17 12:02:22,029 INFO L87 Difference]: Start difference. First operand 72 states and 85 transitions. Second operand 28 states. [2020-07-17 12:02:23,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:23,365 INFO L93 Difference]: Finished difference Result 90 states and 104 transitions. [2020-07-17 12:02:23,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-17 12:02:23,366 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 45 [2020-07-17 12:02:23,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:23,367 INFO L225 Difference]: With dead ends: 90 [2020-07-17 12:02:23,368 INFO L226 Difference]: Without dead ends: 74 [2020-07-17 12:02:23,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=271, Invalid=1369, Unknown=0, NotChecked=0, Total=1640 [2020-07-17 12:02:23,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-17 12:02:23,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 63. [2020-07-17 12:02:23,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-07-17 12:02:23,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2020-07-17 12:02:23,389 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 45 [2020-07-17 12:02:23,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:23,389 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2020-07-17 12:02:23,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-17 12:02:23,389 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2020-07-17 12:02:23,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-17 12:02:23,391 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:23,391 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:02:23,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:02:23,607 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:23,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:23,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1069126843, now seen corresponding path program 1 times [2020-07-17 12:02:23,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:23,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458362776] [2020-07-17 12:02:23,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:24,025 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-17 12:02:24,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458362776] [2020-07-17 12:02:24,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644605733] [2020-07-17 12:02:24,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:02:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:24,148 INFO L264 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-17 12:02:24,152 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:02:24,448 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-17 12:02:24,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:02:24,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20] total 31 [2020-07-17 12:02:24,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797891936] [2020-07-17 12:02:24,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-17 12:02:24,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:24,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-17 12:02:24,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2020-07-17 12:02:24,452 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 31 states. [2020-07-17 12:02:25,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:25,644 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2020-07-17 12:02:25,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-17 12:02:25,646 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 57 [2020-07-17 12:02:25,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:25,648 INFO L225 Difference]: With dead ends: 74 [2020-07-17 12:02:25,648 INFO L226 Difference]: Without dead ends: 71 [2020-07-17 12:02:25,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=243, Invalid=1827, Unknown=0, NotChecked=0, Total=2070 [2020-07-17 12:02:25,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-07-17 12:02:25,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-07-17 12:02:25,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-07-17 12:02:25,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 80 transitions. [2020-07-17 12:02:25,663 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 80 transitions. Word has length 57 [2020-07-17 12:02:25,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:25,664 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 80 transitions. [2020-07-17 12:02:25,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-17 12:02:25,664 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 80 transitions. [2020-07-17 12:02:25,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-17 12:02:25,665 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:25,666 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:02:25,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-07-17 12:02:25,879 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:25,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:25,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1878473469, now seen corresponding path program 1 times [2020-07-17 12:02:25,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:25,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557581869] [2020-07-17 12:02:25,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:26,356 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-17 12:02:26,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557581869] [2020-07-17 12:02:26,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304841009] [2020-07-17 12:02:26,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:02:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:26,497 INFO L264 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-17 12:02:26,508 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:02:26,880 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-17 12:02:26,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:02:26,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 31 [2020-07-17 12:02:26,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42747501] [2020-07-17 12:02:26,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-17 12:02:26,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:26,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-17 12:02:26,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=846, Unknown=0, NotChecked=0, Total=930 [2020-07-17 12:02:26,884 INFO L87 Difference]: Start difference. First operand 70 states and 80 transitions. Second operand 31 states. [2020-07-17 12:02:28,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:28,225 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-07-17 12:02:28,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-17 12:02:28,225 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 57 [2020-07-17 12:02:28,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:28,227 INFO L225 Difference]: With dead ends: 84 [2020-07-17 12:02:28,227 INFO L226 Difference]: Without dead ends: 71 [2020-07-17 12:02:28,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=245, Invalid=2011, Unknown=0, NotChecked=0, Total=2256 [2020-07-17 12:02:28,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-07-17 12:02:28,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-07-17 12:02:28,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-07-17 12:02:28,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2020-07-17 12:02:28,239 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 57 [2020-07-17 12:02:28,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:28,240 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2020-07-17 12:02:28,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-17 12:02:28,240 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2020-07-17 12:02:28,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-17 12:02:28,241 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:28,241 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:02:28,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:02:28,457 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:28,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:28,458 INFO L82 PathProgramCache]: Analyzing trace with hash 482320829, now seen corresponding path program 1 times [2020-07-17 12:02:28,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:28,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407396478] [2020-07-17 12:02:28,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:28,676 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-17 12:02:28,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407396478] [2020-07-17 12:02:28,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272699912] [2020-07-17 12:02:28,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:02:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:28,804 INFO L264 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 37 conjunts are in the unsatisfiable core [2020-07-17 12:02:28,807 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:02:28,867 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-17 12:02:28,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:02:28,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 11 [2020-07-17 12:02:28,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903555570] [2020-07-17 12:02:28,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-17 12:02:28,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:28,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-17 12:02:28,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-07-17 12:02:28,870 INFO L87 Difference]: Start difference. First operand 70 states and 79 transitions. Second operand 11 states. [2020-07-17 12:02:29,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:29,325 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2020-07-17 12:02:29,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-17 12:02:29,325 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-07-17 12:02:29,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:29,327 INFO L225 Difference]: With dead ends: 81 [2020-07-17 12:02:29,327 INFO L226 Difference]: Without dead ends: 69 [2020-07-17 12:02:29,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 65 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-07-17 12:02:29,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-17 12:02:29,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-07-17 12:02:29,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-17 12:02:29,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2020-07-17 12:02:29,338 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 57 [2020-07-17 12:02:29,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:29,339 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2020-07-17 12:02:29,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-17 12:02:29,339 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2020-07-17 12:02:29,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-17 12:02:29,341 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:29,341 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:02:29,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:02:29,556 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:29,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:29,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1291667455, now seen corresponding path program 1 times [2020-07-17 12:02:29,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:29,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848818547] [2020-07-17 12:02:29,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:29,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:29,842 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-17 12:02:29,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848818547] [2020-07-17 12:02:29,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617197167] [2020-07-17 12:02:29,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:02:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:29,963 INFO L264 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-17 12:02:29,966 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:02:30,167 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-17 12:02:30,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-17 12:02:30,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [18] total 26 [2020-07-17 12:02:30,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958697176] [2020-07-17 12:02:30,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-17 12:02:30,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:30,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-17 12:02:30,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2020-07-17 12:02:30,169 INFO L87 Difference]: Start difference. First operand 69 states and 77 transitions. Second operand 15 states. [2020-07-17 12:02:30,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:30,790 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2020-07-17 12:02:30,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-17 12:02:30,790 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-07-17 12:02:30,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:30,792 INFO L225 Difference]: With dead ends: 93 [2020-07-17 12:02:30,792 INFO L226 Difference]: Without dead ends: 82 [2020-07-17 12:02:30,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=218, Invalid=1264, Unknown=0, NotChecked=0, Total=1482 [2020-07-17 12:02:30,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-17 12:02:30,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 64. [2020-07-17 12:02:30,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-07-17 12:02:30,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2020-07-17 12:02:30,818 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 57 [2020-07-17 12:02:30,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:30,819 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2020-07-17 12:02:30,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-17 12:02:30,820 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2020-07-17 12:02:30,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-07-17 12:02:30,823 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:30,826 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:02:31,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-07-17 12:02:31,039 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:31,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:31,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1118751113, now seen corresponding path program 1 times [2020-07-17 12:02:31,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:31,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494173418] [2020-07-17 12:02:31,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 12:02:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 12:02:31,161 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 12:02:31,161 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 12:02:31,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-17 12:02:31,212 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 16 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2020-07-17 12:02:31,214 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 13 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2020-07-17 12:02:31,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 12:02:31 BoogieIcfgContainer [2020-07-17 12:02:31,263 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 12:02:31,266 INFO L168 Benchmark]: Toolchain (without parser) took 18303.09 ms. Allocated memory was 137.4 MB in the beginning and 423.6 MB in the end (delta: 286.3 MB). Free memory was 99.8 MB in the beginning and 336.7 MB in the end (delta: -236.9 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. [2020-07-17 12:02:31,267 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-17 12:02:31,267 INFO L168 Benchmark]: CACSL2BoogieTranslator took 664.90 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 99.4 MB in the beginning and 166.2 MB in the end (delta: -66.8 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-07-17 12:02:31,268 INFO L168 Benchmark]: Boogie Preprocessor took 59.23 ms. Allocated memory is still 200.8 MB. Free memory was 166.2 MB in the beginning and 162.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-07-17 12:02:31,269 INFO L168 Benchmark]: RCFGBuilder took 617.80 ms. Allocated memory is still 200.8 MB. Free memory was 162.7 MB in the beginning and 116.8 MB in the end (delta: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 7.1 GB. [2020-07-17 12:02:31,270 INFO L168 Benchmark]: TraceAbstraction took 16955.31 ms. Allocated memory was 200.8 MB in the beginning and 423.6 MB in the end (delta: 222.8 MB). Free memory was 116.1 MB in the beginning and 336.7 MB in the end (delta: -220.6 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-07-17 12:02:31,273 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 664.90 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 99.4 MB in the beginning and 166.2 MB in the end (delta: -66.8 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 59.23 ms. Allocated memory is still 200.8 MB. Free memory was 166.2 MB in the beginning and 162.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 617.80 ms. Allocated memory is still 200.8 MB. Free memory was 162.7 MB in the beginning and 116.8 MB in the end (delta: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16955.31 ms. Allocated memory was 200.8 MB in the beginning and 423.6 MB in the end (delta: 222.8 MB). Free memory was 116.1 MB in the beginning and 336.7 MB in the end (delta: -220.6 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 16 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 13 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L867] void * guard_malloc_counter = 0; [L887] struct list_head *elem = ((void *)0); [L900] static struct list_head head; VAL [\old(elem)=14, \old(elem)=9, \old(guard_malloc_counter)=12, \old(guard_malloc_counter)=11, \old(head)=null, \old(head)=null, elem={0:0}, guard_malloc_counter={0:0}, head={3:0}] [L903] struct list_head *dev1, *dev2; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:0}, head={3:0}] [L904] CALL, EXPR my_malloc(sizeof(*dev1)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={3:0}] [L879] CALL, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={3:0}] [L871] (size > 0) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={3:0}, size=8] [L872] guard_malloc_counter++ [L873] COND FALSE !(!__VERIFIER_nondet_int()) [L875] return (void *) guard_malloc_counter; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, \result={0:1}, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, size=8] [L879] RET, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, __getMemory(size)={0:1}, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, size=8] [L879] return __getMemory(size); [L904] RET, EXPR my_malloc(sizeof(*dev1)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, my_malloc(sizeof(*dev1))={0:1}] [L904] dev1 = my_malloc(sizeof(*dev1)) [L905] CALL, EXPR my_malloc(sizeof(*dev2)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}] [L879] CALL, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}] [L871] (size > 0) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=1, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={3:0}, size=8] [L872] guard_malloc_counter++ [L873] COND FALSE !(!__VERIFIER_nondet_int()) [L875] return (void *) guard_malloc_counter; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, \result={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, size=8] [L879] RET, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=1, \old(size)=8, __getMemory(size)={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, size=8] [L879] return __getMemory(size); [L905] RET, EXPR my_malloc(sizeof(*dev2)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, my_malloc(sizeof(*dev2))={0:2}] [L905] dev2 = my_malloc(sizeof(*dev2)) [L906] COND TRUE dev1!=((void *)0) && dev2!=((void *)0) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}] [L907] CALL list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, new={0:2}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:2}, new={0:2}] [L891] COND TRUE __VERIFIER_nondet_int() [L892] elem = new VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:2}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:2}, new={0:2}] [L907] RET list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:2}, guard_malloc_counter={0:2}, head={3:0}] [L908] CALL list_add(dev1, &head) VAL [\old(elem)=2, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:2}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, new={0:1}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=2, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:2}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:1}, new={0:1}] [L891] COND TRUE __VERIFIER_nondet_int() [L892] elem = new VAL [\old(elem)=2, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:1}, new={0:1}] [L908] RET list_add(dev1, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] [L909] CALL list_del(dev2) VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, entry={0:2}, guard_malloc_counter={0:2}, head={3:0}] [L896] COND FALSE !(entry==elem) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, entry={0:2}, entry={0:2}, guard_malloc_counter={0:2}, head={3:0}] [L909] RET list_del(dev2) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] [L910] CALL list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, new={0:2}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:2}, new={0:2}] [L891] COND FALSE !(__VERIFIER_nondet_int()) [L910] RET list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] [L913] CALL list_add(dev1, &head) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, new={0:1}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}, head={3:0}, head={3:0}, new={0:1}, new={0:1}] [L890] CALL __blast_assert () VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] [L6] __VERIFIER_error() VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.7s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 389 SDtfs, 564 SDslu, 1162 SDs, 0 SdLazy, 5448 SolverSat, 662 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 727 GetRequests, 440 SyntacticMatches, 6 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1374 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 57 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 903 NumberOfCodeBlocks, 903 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 821 ConstructedInterpolants, 0 QuantifiedInterpolants, 161323 SizeOfPredicates, 49 NumberOfNonLiveVariables, 2263 ConjunctsInSsa, 202 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 182/275 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...