/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 12:02:12,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 12:02:12,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 12:02:12,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 12:02:12,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 12:02:12,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 12:02:12,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 12:02:12,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 12:02:12,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 12:02:12,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 12:02:12,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 12:02:12,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 12:02:12,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 12:02:12,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 12:02:12,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 12:02:12,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 12:02:12,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 12:02:12,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 12:02:12,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 12:02:12,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 12:02:12,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 12:02:12,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 12:02:12,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 12:02:12,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 12:02:12,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 12:02:12,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 12:02:12,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 12:02:12,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 12:02:12,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 12:02:12,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 12:02:12,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 12:02:12,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 12:02:12,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 12:02:12,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 12:02:12,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 12:02:12,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 12:02:12,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 12:02:12,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 12:02:12,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 12:02:12,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 12:02:12,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 12:02:12,056 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 12:02:12,070 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 12:02:12,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 12:02:12,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 12:02:12,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 12:02:12,072 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 12:02:12,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 12:02:12,073 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 12:02:12,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 12:02:12,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 12:02:12,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 12:02:12,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 12:02:12,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 12:02:12,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 12:02:12,074 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 12:02:12,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 12:02:12,074 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 12:02:12,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 12:02:12,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 12:02:12,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 12:02:12,075 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 12:02:12,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 12:02:12,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:02:12,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 12:02:12,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 12:02:12,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 12:02:12,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 12:02:12,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 12:02:12,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 12:02:12,077 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 12:02:12,077 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 12:02:12,367 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 12:02:12,380 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 12:02:12,383 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 12:02:12,385 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 12:02:12,385 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 12:02:12,386 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-07-17 12:02:12,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c1c3b4fe/3f5fb46902554749bdc00861b22ffaff/FLAG4be5f9cd2 [2020-07-17 12:02:12,993 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 12:02:12,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-07-17 12:02:13,012 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c1c3b4fe/3f5fb46902554749bdc00861b22ffaff/FLAG4be5f9cd2 [2020-07-17 12:02:13,284 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c1c3b4fe/3f5fb46902554749bdc00861b22ffaff [2020-07-17 12:02:13,292 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 12:02:13,296 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 12:02:13,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 12:02:13,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 12:02:13,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 12:02:13,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:02:13" (1/1) ... [2020-07-17 12:02:13,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d11484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:13, skipping insertion in model container [2020-07-17 12:02:13,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:02:13" (1/1) ... [2020-07-17 12:02:13,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 12:02:13,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 12:02:13,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:02:13,764 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 12:02:13,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:02:13,906 INFO L208 MainTranslator]: Completed translation [2020-07-17 12:02:13,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:02:13 WrapperNode [2020-07-17 12:02:13,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 12:02:13,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 12:02:13,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 12:02:13,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 12:02:13,921 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 12:02:13,922 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 12:02:13,937 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 12:02:13,937 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 12:02:13,950 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 12:02:13,952 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 12:02:13,956 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 12:02:13,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 12:02:13,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 12:02:13,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 12:02:13,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 12:02:13,964 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 12:02:14,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 12:02:14,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 12:02:14,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-17 12:02:14,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-07-17 12:02:14,019 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-07-17 12:02:14,019 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-07-17 12:02:14,019 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-07-17 12:02:14,019 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 12:02:14,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 12:02:14,020 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-17 12:02:14,020 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-07-17 12:02:14,020 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-07-17 12:02:14,020 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-07-17 12:02:14,020 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-07-17 12:02:14,021 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-07-17 12:02:14,021 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-07-17 12:02:14,021 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-07-17 12:02:14,021 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-07-17 12:02:14,021 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-07-17 12:02:14,021 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-07-17 12:02:14,022 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-07-17 12:02:14,022 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-07-17 12:02:14,022 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-07-17 12:02:14,022 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-07-17 12:02:14,022 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-07-17 12:02:14,022 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-07-17 12:02:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-07-17 12:02:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-07-17 12:02:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-07-17 12:02:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-07-17 12:02:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-07-17 12:02:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-07-17 12:02:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-07-17 12:02:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-07-17 12:02:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-07-17 12:02:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-07-17 12:02:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-07-17 12:02:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-07-17 12:02:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-17 12:02:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-07-17 12:02:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-07-17 12:02:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-07-17 12:02:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-07-17 12:02:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-07-17 12:02:14,026 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-07-17 12:02:14,026 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-07-17 12:02:14,026 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-07-17 12:02:14,026 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-07-17 12:02:14,026 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-17 12:02:14,026 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-07-17 12:02:14,026 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-07-17 12:02:14,027 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-07-17 12:02:14,027 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-07-17 12:02:14,027 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-07-17 12:02:14,027 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-07-17 12:02:14,027 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-07-17 12:02:14,027 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-07-17 12:02:14,027 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-07-17 12:02:14,028 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-07-17 12:02:14,028 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-07-17 12:02:14,028 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-07-17 12:02:14,028 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-07-17 12:02:14,028 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-07-17 12:02:14,028 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-07-17 12:02:14,028 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-17 12:02:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-07-17 12:02:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-07-17 12:02:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-07-17 12:02:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-07-17 12:02:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-07-17 12:02:14,029 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-07-17 12:02:14,030 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-07-17 12:02:14,030 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-07-17 12:02:14,030 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-07-17 12:02:14,030 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-07-17 12:02:14,030 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-07-17 12:02:14,030 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-07-17 12:02:14,031 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-07-17 12:02:14,031 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-07-17 12:02:14,031 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-07-17 12:02:14,031 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-07-17 12:02:14,031 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-07-17 12:02:14,031 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-07-17 12:02:14,031 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-07-17 12:02:14,032 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-07-17 12:02:14,032 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-07-17 12:02:14,032 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-07-17 12:02:14,032 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-07-17 12:02:14,032 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-07-17 12:02:14,032 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-07-17 12:02:14,033 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-07-17 12:02:14,033 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-07-17 12:02:14,033 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-07-17 12:02:14,033 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-07-17 12:02:14,033 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-07-17 12:02:14,033 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-07-17 12:02:14,033 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-07-17 12:02:14,034 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-07-17 12:02:14,034 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-07-17 12:02:14,034 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-07-17 12:02:14,034 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-07-17 12:02:14,034 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-07-17 12:02:14,034 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-07-17 12:02:14,034 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-07-17 12:02:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-07-17 12:02:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-07-17 12:02:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-07-17 12:02:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-07-17 12:02:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-07-17 12:02:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-07-17 12:02:14,035 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-07-17 12:02:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 12:02:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-17 12:02:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-17 12:02:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-17 12:02:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-17 12:02:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-07-17 12:02:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-17 12:02:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-07-17 12:02:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-07-17 12:02:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-07-17 12:02:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-07-17 12:02:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-07-17 12:02:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-07-17 12:02:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-07-17 12:02:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-07-17 12:02:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-07-17 12:02:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-07-17 12:02:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-07-17 12:02:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 12:02:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-07-17 12:02:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-07-17 12:02:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-07-17 12:02:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-07-17 12:02:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 12:02:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 12:02:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 12:02:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-17 12:02:14,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 12:02:14,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-17 12:02:14,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-17 12:02:14,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 12:02:14,601 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 12:02:14,601 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 12:02:14,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:02:14 BoogieIcfgContainer [2020-07-17 12:02:14,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 12:02:14,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 12:02:14,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 12:02:14,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 12:02:14,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 12:02:13" (1/3) ... [2020-07-17 12:02:14,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c56421 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 12:02:14,611 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 12:02:14,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c56421 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 12:02:14,612 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 12:02:14,614 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.i [2020-07-17 12:02:14,627 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 12:02:14,641 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 12:02:14,657 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 12:02:14,681 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 12:02:14,682 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 12:02:14,682 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 12:02:14,682 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 12:02:14,682 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 12:02:14,682 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 12:02:14,683 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 12:02:14,683 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 12:02:14,702 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-07-17 12:02:14,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-17 12:02:14,708 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:14,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:02:14,710 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:14,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:14,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1135050545, now seen corresponding path program 1 times [2020-07-17 12:02:14,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:14,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127966341] [2020-07-17 12:02:14,726 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:15,017 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 12:02:15,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127966341] [2020-07-17 12:02:15,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:02:15,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-17 12:02:15,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805883755] [2020-07-17 12:02:15,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 12:02:15,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:15,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 12:02:15,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-17 12:02:15,045 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 7 states. [2020-07-17 12:02:15,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:15,463 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2020-07-17 12:02:15,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-17 12:02:15,465 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-07-17 12:02:15,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:15,488 INFO L225 Difference]: With dead ends: 88 [2020-07-17 12:02:15,488 INFO L226 Difference]: Without dead ends: 43 [2020-07-17 12:02:15,497 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 12:02:15,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-17 12:02:15,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-07-17 12:02:15,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-17 12:02:15,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-07-17 12:02:15,573 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 13 [2020-07-17 12:02:15,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:15,574 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-07-17 12:02:15,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 12:02:15,574 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-07-17 12:02:15,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-17 12:02:15,576 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:15,577 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 12:02:15,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 12:02:15,577 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:15,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:15,578 INFO L82 PathProgramCache]: Analyzing trace with hash -925661111, now seen corresponding path program 1 times [2020-07-17 12:02:15,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:15,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354778990] [2020-07-17 12:02:15,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:15,956 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 12:02:15,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354778990] [2020-07-17 12:02:15,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383979846] [2020-07-17 12:02:15,957 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 12:02:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:16,111 INFO L264 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-17 12:02:16,120 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:02:16,168 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 12:02:16,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:02:16,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 9 [2020-07-17 12:02:16,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728313670] [2020-07-17 12:02:16,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 12:02:16,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:16,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 12:02:16,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-17 12:02:16,173 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 9 states. [2020-07-17 12:02:16,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:16,406 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2020-07-17 12:02:16,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-17 12:02:16,407 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-07-17 12:02:16,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:16,409 INFO L225 Difference]: With dead ends: 69 [2020-07-17 12:02:16,409 INFO L226 Difference]: Without dead ends: 48 [2020-07-17 12:02:16,411 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 12:02:16,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-17 12:02:16,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-07-17 12:02:16,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-17 12:02:16,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-07-17 12:02:16,422 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 38 [2020-07-17 12:02:16,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:16,422 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-07-17 12:02:16,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 12:02:16,422 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-07-17 12:02:16,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-17 12:02:16,424 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:16,424 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 12:02:16,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-17 12:02:16,639 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:16,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:16,639 INFO L82 PathProgramCache]: Analyzing trace with hash -894641304, now seen corresponding path program 1 times [2020-07-17 12:02:16,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:16,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796706126] [2020-07-17 12:02:16,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:16,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:16,861 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 12:02:16,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796706126] [2020-07-17 12:02:16,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:02:16,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-17 12:02:16,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310716562] [2020-07-17 12:02:16,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 12:02:16,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:16,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 12:02:16,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-17 12:02:16,864 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 9 states. [2020-07-17 12:02:17,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:17,026 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2020-07-17 12:02:17,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-17 12:02:17,026 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-07-17 12:02:17,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:17,028 INFO L225 Difference]: With dead ends: 67 [2020-07-17 12:02:17,028 INFO L226 Difference]: Without dead ends: 43 [2020-07-17 12:02:17,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-17 12:02:17,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-17 12:02:17,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-07-17 12:02:17,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-17 12:02:17,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-07-17 12:02:17,051 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 38 [2020-07-17 12:02:17,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:17,052 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-07-17 12:02:17,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 12:02:17,052 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-07-17 12:02:17,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-17 12:02:17,054 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:17,054 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 12:02:17,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 12:02:17,055 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:17,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:17,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1188044311, now seen corresponding path program 1 times [2020-07-17 12:02:17,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:17,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030990383] [2020-07-17 12:02:17,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:17,357 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 12:02:17,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030990383] [2020-07-17 12:02:17,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206957610] [2020-07-17 12:02:17,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:02:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:17,483 INFO L264 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-17 12:02:17,487 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:02:17,782 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 12:02:17,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-17 12:02:17,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14] total 26 [2020-07-17 12:02:17,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456911798] [2020-07-17 12:02:17,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-17 12:02:17,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:17,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-17 12:02:17,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2020-07-17 12:02:17,785 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 13 states. [2020-07-17 12:02:18,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:18,279 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2020-07-17 12:02:18,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-17 12:02:18,280 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-07-17 12:02:18,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:18,282 INFO L225 Difference]: With dead ends: 71 [2020-07-17 12:02:18,283 INFO L226 Difference]: Without dead ends: 60 [2020-07-17 12:02:18,284 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 12:02:18,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-17 12:02:18,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2020-07-17 12:02:18,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-17 12:02:18,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2020-07-17 12:02:18,295 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 38 [2020-07-17 12:02:18,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:18,295 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2020-07-17 12:02:18,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-17 12:02:18,296 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-07-17 12:02:18,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-17 12:02:18,297 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:18,297 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 12:02:18,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:02:18,512 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:18,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:18,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1335597358, now seen corresponding path program 1 times [2020-07-17 12:02:18,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:18,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273258408] [2020-07-17 12:02:18,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:18,865 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 12:02:18,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273258408] [2020-07-17 12:02:18,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606508676] [2020-07-17 12:02:18,866 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 12:02:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:18,971 INFO L264 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-17 12:02:18,974 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:02:19,197 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 12:02:19,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:02:19,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 29 [2020-07-17 12:02:19,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827979943] [2020-07-17 12:02:19,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-17 12:02:19,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:19,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-17 12:02:19,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2020-07-17 12:02:19,200 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 29 states. [2020-07-17 12:02:20,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:20,412 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2020-07-17 12:02:20,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-17 12:02:20,412 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 45 [2020-07-17 12:02:20,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:20,414 INFO L225 Difference]: With dead ends: 65 [2020-07-17 12:02:20,414 INFO L226 Difference]: Without dead ends: 58 [2020-07-17 12:02:20,416 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 12:02:20,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-17 12:02:20,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-07-17 12:02:20,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-17 12:02:20,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-07-17 12:02:20,428 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 45 [2020-07-17 12:02:20,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:20,429 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-07-17 12:02:20,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-17 12:02:20,429 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-07-17 12:02:20,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-17 12:02:20,430 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:20,430 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 12:02:20,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:02:20,634 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:20,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:20,635 INFO L82 PathProgramCache]: Analyzing trace with hash 526250732, now seen corresponding path program 1 times [2020-07-17 12:02:20,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:20,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020525200] [2020-07-17 12:02:20,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:20,929 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 12:02:20,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020525200] [2020-07-17 12:02:20,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142172425] [2020-07-17 12:02:20,930 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 12:02:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:21,077 INFO L264 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-17 12:02:21,081 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:02:21,434 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 12:02:21,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:02:21,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 28 [2020-07-17 12:02:21,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025515028] [2020-07-17 12:02:21,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-17 12:02:21,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:21,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-17 12:02:21,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2020-07-17 12:02:21,436 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 28 states. [2020-07-17 12:02:22,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:22,438 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-07-17 12:02:22,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-17 12:02:22,438 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 45 [2020-07-17 12:02:22,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:22,440 INFO L225 Difference]: With dead ends: 65 [2020-07-17 12:02:22,441 INFO L226 Difference]: Without dead ends: 62 [2020-07-17 12:02:22,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=244, Invalid=1238, Unknown=0, NotChecked=0, Total=1482 [2020-07-17 12:02:22,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-07-17 12:02:22,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-07-17 12:02:22,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-17 12:02:22,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-07-17 12:02:22,452 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 45 [2020-07-17 12:02:22,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:22,453 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-07-17 12:02:22,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-17 12:02:22,453 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-07-17 12:02:22,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-17 12:02:22,455 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:22,455 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 12:02:22,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:02:22,658 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:22,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:22,659 INFO L82 PathProgramCache]: Analyzing trace with hash -2119488644, now seen corresponding path program 1 times [2020-07-17 12:02:22,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:22,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772053169] [2020-07-17 12:02:22,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:23,055 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 12:02:23,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772053169] [2020-07-17 12:02:23,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785794819] [2020-07-17 12:02:23,056 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 12:02:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:23,195 INFO L264 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-17 12:02:23,199 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:02:23,468 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 12:02:23,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:02:23,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 31 [2020-07-17 12:02:23,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589415718] [2020-07-17 12:02:23,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-17 12:02:23,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:23,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-17 12:02:23,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=846, Unknown=0, NotChecked=0, Total=930 [2020-07-17 12:02:23,472 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 31 states. [2020-07-17 12:02:24,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:24,678 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-07-17 12:02:24,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-17 12:02:24,679 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 57 [2020-07-17 12:02:24,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:24,681 INFO L225 Difference]: With dead ends: 66 [2020-07-17 12:02:24,681 INFO L226 Difference]: Without dead ends: 60 [2020-07-17 12:02:24,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=245, Invalid=2011, Unknown=0, NotChecked=0, Total=2256 [2020-07-17 12:02:24,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-17 12:02:24,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2020-07-17 12:02:24,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-17 12:02:24,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2020-07-17 12:02:24,694 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 57 [2020-07-17 12:02:24,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:24,695 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2020-07-17 12:02:24,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-17 12:02:24,695 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2020-07-17 12:02:24,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-17 12:02:24,696 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:24,697 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 12:02:24,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-07-17 12:02:24,910 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:24,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:24,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1366132026, now seen corresponding path program 1 times [2020-07-17 12:02:24,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:24,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614844326] [2020-07-17 12:02:24,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:25,310 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 12:02:25,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614844326] [2020-07-17 12:02:25,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317912179] [2020-07-17 12:02:25,311 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 12:02:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:25,432 INFO L264 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-17 12:02:25,436 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:02:25,726 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 12:02:25,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:02:25,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20] total 31 [2020-07-17 12:02:25,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255625753] [2020-07-17 12:02:25,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-17 12:02:25,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:25,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-17 12:02:25,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2020-07-17 12:02:25,729 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 31 states. [2020-07-17 12:02:26,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:26,794 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-07-17 12:02:26,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-17 12:02:26,794 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 57 [2020-07-17 12:02:26,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:26,796 INFO L225 Difference]: With dead ends: 63 [2020-07-17 12:02:26,796 INFO L226 Difference]: Without dead ends: 49 [2020-07-17 12:02:26,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=243, Invalid=1827, Unknown=0, NotChecked=0, Total=2070 [2020-07-17 12:02:26,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-17 12:02:26,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-07-17 12:02:26,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-17 12:02:26,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-07-17 12:02:26,805 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 57 [2020-07-17 12:02:26,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:26,805 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-07-17 12:02:26,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-17 12:02:26,805 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-07-17 12:02:26,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-17 12:02:26,806 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:26,807 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 12:02:27,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:02:27,018 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:27,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:27,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1588672638, now seen corresponding path program 1 times [2020-07-17 12:02:27,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:27,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361508241] [2020-07-17 12:02:27,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:27,306 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 12:02:27,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361508241] [2020-07-17 12:02:27,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467875314] [2020-07-17 12:02:27,307 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 12:02:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:27,439 INFO L264 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-17 12:02:27,443 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:02:27,654 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 12:02:27,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-17 12:02:27,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [18] total 26 [2020-07-17 12:02:27,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412114111] [2020-07-17 12:02:27,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-17 12:02:27,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:27,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-17 12:02:27,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2020-07-17 12:02:27,657 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 15 states. [2020-07-17 12:02:28,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:28,164 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-07-17 12:02:28,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-17 12:02:28,164 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-07-17 12:02:28,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:28,166 INFO L225 Difference]: With dead ends: 60 [2020-07-17 12:02:28,166 INFO L226 Difference]: Without dead ends: 52 [2020-07-17 12:02:28,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=218, Invalid=1264, Unknown=0, NotChecked=0, Total=1482 [2020-07-17 12:02:28,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-07-17 12:02:28,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2020-07-17 12:02:28,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-17 12:02:28,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-07-17 12:02:28,176 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 57 [2020-07-17 12:02:28,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:28,176 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-07-17 12:02:28,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-17 12:02:28,176 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-07-17 12:02:28,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-17 12:02:28,177 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:02:28,178 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 12:02:28,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:02:28,379 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:02:28,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:02:28,380 INFO L82 PathProgramCache]: Analyzing trace with hash 779326012, now seen corresponding path program 1 times [2020-07-17 12:02:28,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:02:28,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950143979] [2020-07-17 12:02:28,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:02:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:28,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:28,562 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 12:02:28,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950143979] [2020-07-17 12:02:28,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52709786] [2020-07-17 12:02:28,564 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 12:02:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:02:28,676 INFO L264 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 37 conjunts are in the unsatisfiable core [2020-07-17 12:02:28,679 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:02:28,729 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 12:02:28,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:02:28,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 11 [2020-07-17 12:02:28,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871367326] [2020-07-17 12:02:28,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-17 12:02:28,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:02:28,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-17 12:02:28,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-07-17 12:02:28,732 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 11 states. [2020-07-17 12:02:29,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:02:29,056 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-07-17 12:02:29,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-17 12:02:29,058 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-07-17 12:02:29,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:02:29,058 INFO L225 Difference]: With dead ends: 47 [2020-07-17 12:02:29,058 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 12:02:29,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 65 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-07-17 12:02:29,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 12:02:29,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 12:02:29,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 12:02:29,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 12:02:29,060 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2020-07-17 12:02:29,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:02:29,060 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 12:02:29,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-17 12:02:29,061 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 12:02:29,061 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 12:02:29,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-07-17 12:02:29,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 12:02:30,355 INFO L268 CegarLoopResult]: For program point my_mallocFINAL(lines 878 880) no Hoare annotation was computed. [2020-07-17 12:02:30,356 INFO L264 CegarLoopResult]: At program point L879(line 879) the Hoare annotation is: (or (not (= 8 |my_malloc_#in~size|)) (and (= 8 my_malloc_~size) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|))) [2020-07-17 12:02:30,356 INFO L268 CegarLoopResult]: For program point L879-1(line 879) no Hoare annotation was computed. [2020-07-17 12:02:30,356 INFO L264 CegarLoopResult]: At program point my_mallocENTRY(lines 878 880) the Hoare annotation is: (or (not (= 8 |my_malloc_#in~size|)) (and (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|))) [2020-07-17 12:02:30,356 INFO L268 CegarLoopResult]: For program point my_mallocEXIT(lines 878 880) no Hoare annotation was computed. [2020-07-17 12:02:30,356 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-17 12:02:30,357 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |old(#NULL.base)| |#NULL.base|) (= |old(~#head~0.base)| |~#head~0.base|) (= |old(~elem~0.offset)| ~elem~0.offset) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#length)| |#length|) (= |old(~elem~0.base)| ~elem~0.base) (= |~#head~0.offset| |old(~#head~0.offset)|) (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|)) [2020-07-17 12:02:30,357 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-17 12:02:30,357 INFO L268 CegarLoopResult]: For program point L896(lines 896 897) no Hoare annotation was computed. [2020-07-17 12:02:30,357 INFO L268 CegarLoopResult]: For program point L896-2(lines 895 898) no Hoare annotation was computed. [2020-07-17 12:02:30,357 INFO L268 CegarLoopResult]: For program point list_delEXIT(lines 895 898) no Hoare annotation was computed. [2020-07-17 12:02:30,357 INFO L264 CegarLoopResult]: At program point list_delENTRY(lines 895 898) the Hoare annotation is: (and (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)) [2020-07-17 12:02:30,358 INFO L264 CegarLoopResult]: At program point list_addENTRY(lines 889 893) the Hoare annotation is: (let ((.cse0 (and (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)))) (and (or .cse0 (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|)) (not (<= 1 ~guard_malloc_counter~0.offset))) (or .cse0 (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|))))) [2020-07-17 12:02:30,358 INFO L268 CegarLoopResult]: For program point L891(lines 891 892) no Hoare annotation was computed. [2020-07-17 12:02:30,358 INFO L268 CegarLoopResult]: For program point L890(line 890) no Hoare annotation was computed. [2020-07-17 12:02:30,358 INFO L268 CegarLoopResult]: For program point L891-2(lines 889 893) no Hoare annotation was computed. [2020-07-17 12:02:30,358 INFO L264 CegarLoopResult]: At program point L890-2(line 890) the Hoare annotation is: (and (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|)) (or (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|)) (not (<= 1 ~guard_malloc_counter~0.offset)))) [2020-07-17 12:02:30,358 INFO L268 CegarLoopResult]: For program point L890-3(line 890) no Hoare annotation was computed. [2020-07-17 12:02:30,359 INFO L268 CegarLoopResult]: For program point list_addEXIT(lines 889 893) no Hoare annotation was computed. [2020-07-17 12:02:30,359 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-07-17 12:02:30,359 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2020-07-17 12:02:30,359 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2020-07-17 12:02:30,359 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-07-17 12:02:30,359 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-17 12:02:30,359 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= 0 ~elem~0.offset) (<= 0 ~guard_malloc_counter~0.offset)) [2020-07-17 12:02:30,360 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 12:02:30,360 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-17 12:02:30,360 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 902 917) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (= |old(~elem~0.offset)| ~elem~0.offset) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |old(~elem~0.base)| ~elem~0.base) (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|)) (not (= |old(~elem~0.offset)| 0))) [2020-07-17 12:02:30,360 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 902 917) no Hoare annotation was computed. [2020-07-17 12:02:30,360 INFO L264 CegarLoopResult]: At program point L909(line 909) the Hoare annotation is: (let ((.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset))) (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (not (= |old(~elem~0.offset)| 0)) (and .cse0 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset) (<= (+ ~elem~0.offset 1) main_~dev2~0.offset)) (and .cse0 (<= 2 main_~dev2~0.offset) (<= ~elem~0.offset 0)))) [2020-07-17 12:02:30,360 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 902 917) no Hoare annotation was computed. [2020-07-17 12:02:30,361 INFO L264 CegarLoopResult]: At program point L908(line 908) the Hoare annotation is: (let ((.cse1 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse2 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset)) (.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset)) (.cse3 (<= 2 main_~dev2~0.offset))) (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and .cse0 (= main_~dev2~0.base ~elem~0.base) .cse1 .cse2 .cse3 (= main_~dev2~0.offset ~elem~0.offset)) (not (= |old(~elem~0.offset)| 0)) (and .cse0 .cse1 .cse2 (<= (+ ~elem~0.offset 1) main_~dev2~0.offset)) (and .cse0 .cse3 (<= ~elem~0.offset 0)))) [2020-07-17 12:02:30,361 INFO L264 CegarLoopResult]: At program point L907(line 907) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset) (<= 1 main_~dev1~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset) (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)) (not (= |old(~elem~0.offset)| 0))) [2020-07-17 12:02:30,361 INFO L268 CegarLoopResult]: For program point L906(lines 906 915) no Hoare annotation was computed. [2020-07-17 12:02:30,361 INFO L264 CegarLoopResult]: At program point L907-1(line 907) the Hoare annotation is: (let ((.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset)) (.cse1 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse2 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset))) (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and .cse0 (<= 1 main_~dev1~0.offset) .cse1 .cse2 (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)) (and .cse0 (= main_~dev2~0.base ~elem~0.base) .cse1 .cse2 (<= 2 main_~dev2~0.offset) (= main_~dev2~0.offset ~elem~0.offset)) (not (= |old(~elem~0.offset)| 0)))) [2020-07-17 12:02:30,361 INFO L264 CegarLoopResult]: At program point L905(line 905) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (= 0 main_~dev1~0.base) (= 0 main_~dev1~0.offset)) (not (= |old(~elem~0.offset)| 0)) (and (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset) (<= 1 main_~dev1~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base))) [2020-07-17 12:02:30,361 INFO L268 CegarLoopResult]: For program point L906-1(lines 906 915) no Hoare annotation was computed. [2020-07-17 12:02:30,362 INFO L264 CegarLoopResult]: At program point L904(line 904) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (= |old(~elem~0.offset)| ~elem~0.offset) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |old(~elem~0.base)| ~elem~0.base) (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|)) (not (= |old(~elem~0.offset)| 0))) [2020-07-17 12:02:30,362 INFO L268 CegarLoopResult]: For program point L905-1(line 905) no Hoare annotation was computed. [2020-07-17 12:02:30,362 INFO L268 CegarLoopResult]: For program point L904-1(line 904) no Hoare annotation was computed. [2020-07-17 12:02:30,362 INFO L264 CegarLoopResult]: At program point __getMemoryENTRY(lines 869 876) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|)) (not (= 8 |__getMemory_#in~size|)) (not (= 0 ~elem~0.offset))) [2020-07-17 12:02:30,362 INFO L268 CegarLoopResult]: For program point __getMemoryEXIT(lines 869 876) no Hoare annotation was computed. [2020-07-17 12:02:30,362 INFO L268 CegarLoopResult]: For program point __getMemoryFINAL(lines 869 876) no Hoare annotation was computed. [2020-07-17 12:02:30,362 INFO L268 CegarLoopResult]: For program point L873(lines 873 874) no Hoare annotation was computed. [2020-07-17 12:02:30,363 INFO L268 CegarLoopResult]: For program point L871(line 871) no Hoare annotation was computed. [2020-07-17 12:02:30,363 INFO L264 CegarLoopResult]: At program point L871-2(line 871) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (not (= 8 |__getMemory_#in~size|)) (not (= 0 ~elem~0.offset))) [2020-07-17 12:02:30,363 INFO L268 CegarLoopResult]: For program point L871-3(line 871) no Hoare annotation was computed. [2020-07-17 12:02:30,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 12:02:30 BoogieIcfgContainer [2020-07-17 12:02:30,369 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 12:02:30,381 INFO L168 Benchmark]: Toolchain (without parser) took 17077.10 ms. Allocated memory was 143.7 MB in the beginning and 399.0 MB in the end (delta: 255.3 MB). Free memory was 101.0 MB in the beginning and 188.9 MB in the end (delta: -87.9 MB). Peak memory consumption was 167.4 MB. Max. memory is 7.1 GB. [2020-07-17 12:02:30,383 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 143.7 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 12:02:30,385 INFO L168 Benchmark]: CACSL2BoogieTranslator took 610.58 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 100.5 MB in the beginning and 166.2 MB in the end (delta: -65.6 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-07-17 12:02:30,386 INFO L168 Benchmark]: Boogie Preprocessor took 54.50 ms. Allocated memory is still 201.3 MB. Free memory was 166.2 MB in the beginning and 163.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-07-17 12:02:30,387 INFO L168 Benchmark]: RCFGBuilder took 642.86 ms. Allocated memory is still 201.3 MB. Free memory was 163.0 MB in the beginning and 117.0 MB in the end (delta: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 7.1 GB. [2020-07-17 12:02:30,389 INFO L168 Benchmark]: TraceAbstraction took 15762.83 ms. Allocated memory was 201.3 MB in the beginning and 399.0 MB in the end (delta: 197.7 MB). Free memory was 117.0 MB in the beginning and 188.9 MB in the end (delta: -71.9 MB). Peak memory consumption was 125.8 MB. Max. memory is 7.1 GB. [2020-07-17 12:02:30,393 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 143.7 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 610.58 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 100.5 MB in the beginning and 166.2 MB in the end (delta: -65.6 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.50 ms. Allocated memory is still 201.3 MB. Free memory was 166.2 MB in the beginning and 163.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 642.86 ms. Allocated memory is still 201.3 MB. Free memory was 163.0 MB in the beginning and 117.0 MB in the end (delta: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15762.83 ms. Allocated memory was 201.3 MB in the beginning and 399.0 MB in the end (delta: 197.7 MB). Free memory was 117.0 MB in the beginning and 188.9 MB in the end (delta: -71.9 MB). Peak memory consumption was 125.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.5s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 349 SDtfs, 497 SDslu, 1066 SDs, 0 SdLazy, 4544 SolverSat, 463 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 721 GetRequests, 437 SyntacticMatches, 6 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1340 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 44 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 73 PreInvPairs, 84 NumberOfFragments, 426 HoareAnnotationTreeSize, 73 FomulaSimplifications, 2261 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 18 FomulaSimplificationsInter, 1252 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 839 NumberOfCodeBlocks, 839 NumberOfCodeBlocksAsserted, 18 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 correct! Received shutdown request...