/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_list.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:17:52,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:17:52,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:17:52,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:17:52,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:17:52,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:17:52,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:17:52,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:17:52,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:17:52,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:17:52,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:17:52,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:17:52,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:17:52,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:17:52,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:17:52,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:17:52,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:17:52,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:17:52,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:17:52,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:17:52,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:17:52,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:17:52,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:17:52,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:17:52,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 11:17:52,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 11:17:52,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 11:17:52,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 11:17:52,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 11:17:52,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 11:17:52,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 11:17:52,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 11:17:52,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 11:17:52,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 11:17:52,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 11:17:52,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 11:17:52,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 11:17:52,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 11:17:52,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:17:52,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:17:52,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:17:52,146 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 [2020-07-07 11:17:52,168 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:17:52,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:17:52,170 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:17:52,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:17:52,173 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:17:52,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:17:52,174 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:17:52,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:17:52,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:17:52,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:17:52,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:17:52,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:17:52,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:17:52,175 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:17:52,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:17:52,178 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:17:52,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:17:52,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:17:52,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:17:52,179 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:17:52,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:17:52,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:17:52,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:17:52,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:17:52,180 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:17:52,180 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:17:52,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:17:52,181 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:17:52,181 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:17:52,181 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:17:52,442 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:17:52,453 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:17:52,457 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:17:52,458 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:17:52,458 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:17:52,459 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list.i [2020-07-07 11:17:52,524 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4f8b24fa/2fc62b094053490f82f28cd06f7bec6a/FLAG5611f709b [2020-07-07 11:17:53,085 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:17:53,085 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list.i [2020-07-07 11:17:53,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4f8b24fa/2fc62b094053490f82f28cd06f7bec6a/FLAG5611f709b [2020-07-07 11:17:53,361 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4f8b24fa/2fc62b094053490f82f28cd06f7bec6a [2020-07-07 11:17:53,369 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:17:53,371 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:17:53,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:17:53,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:17:53,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:17:53,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:17:53" (1/1) ... [2020-07-07 11:17:53,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@304daafe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:17:53, skipping insertion in model container [2020-07-07 11:17:53,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:17:53" (1/1) ... [2020-07-07 11:17:53,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:17:53,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:17:53,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:17:53,883 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:17:53,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:17:54,000 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:17:54,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:17:54 WrapperNode [2020-07-07 11:17:54,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:17:54,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:17:54,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:17:54,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:17:54,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:17:54" (1/1) ... [2020-07-07 11:17:54,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:17:54" (1/1) ... [2020-07-07 11:17:54,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:17:54" (1/1) ... [2020-07-07 11:17:54,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:17:54" (1/1) ... [2020-07-07 11:17:54,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:17:54" (1/1) ... [2020-07-07 11:17:54,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:17:54" (1/1) ... [2020-07-07 11:17:54,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:17:54" (1/1) ... [2020-07-07 11:17:54,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:17:54,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:17:54,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:17:54,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:17:54,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:17:54" (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 [2020-07-07 11:17:54,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:17:54,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:17:54,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-07 11:17:54,122 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-07-07 11:17:54,122 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-07-07 11:17:54,122 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:17:54,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:17:54,123 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-07 11:17:54,123 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-07-07 11:17:54,123 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-07-07 11:17:54,123 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-07-07 11:17:54,124 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-07-07 11:17:54,124 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-07-07 11:17:54,125 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-07-07 11:17:54,125 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-07-07 11:17:54,126 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-07-07 11:17:54,126 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-07-07 11:17:54,126 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-07-07 11:17:54,126 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-07-07 11:17:54,127 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-07-07 11:17:54,127 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-07-07 11:17:54,127 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-07-07 11:17:54,128 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-07-07 11:17:54,128 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-07-07 11:17:54,129 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-07-07 11:17:54,130 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-07-07 11:17:54,130 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-07-07 11:17:54,130 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-07-07 11:17:54,131 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-07-07 11:17:54,131 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-07-07 11:17:54,131 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-07-07 11:17:54,131 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-07-07 11:17:54,131 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-07-07 11:17:54,131 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-07-07 11:17:54,132 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-07-07 11:17:54,132 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-07-07 11:17:54,132 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-07 11:17:54,132 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-07-07 11:17:54,132 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-07-07 11:17:54,132 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-07-07 11:17:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-07-07 11:17:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-07-07 11:17:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-07-07 11:17:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-07-07 11:17:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-07-07 11:17:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-07-07 11:17:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-07 11:17:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-07-07 11:17:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-07-07 11:17:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-07-07 11:17:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-07-07 11:17:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-07-07 11:17:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-07-07 11:17:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-07-07 11:17:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-07-07 11:17:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-07-07 11:17:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-07-07 11:17:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-07-07 11:17:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-07-07 11:17:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-07-07 11:17:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-07-07 11:17:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-07-07 11:17:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-07 11:17:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-07-07 11:17:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-07-07 11:17:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-07-07 11:17:54,137 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-07-07 11:17:54,137 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-07-07 11:17:54,137 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-07-07 11:17:54,137 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-07-07 11:17:54,137 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-07-07 11:17:54,137 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-07-07 11:17:54,138 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-07-07 11:17:54,138 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-07-07 11:17:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-07-07 11:17:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-07-07 11:17:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-07-07 11:17:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-07-07 11:17:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-07-07 11:17:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-07-07 11:17:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-07-07 11:17:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-07-07 11:17:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-07-07 11:17:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-07-07 11:17:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-07-07 11:17:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-07-07 11:17:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-07-07 11:17:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-07-07 11:17:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-07-07 11:17:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-07-07 11:17:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-07-07 11:17:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-07-07 11:17:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-07-07 11:17:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-07-07 11:17:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-07-07 11:17:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-07-07 11:17:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-07-07 11:17:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-07-07 11:17:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-07-07 11:17:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-07-07 11:17:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-07-07 11:17:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-07-07 11:17:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-07-07 11:17:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-07-07 11:17:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-07-07 11:17:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-07-07 11:17:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-07-07 11:17:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-07-07 11:17:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-07-07 11:17:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 11:17:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 11:17:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-07 11:17:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 11:17:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-07 11:17:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-07-07 11:17:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-07 11:17:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-07-07 11:17:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-07-07 11:17:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-07-07 11:17:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-07-07 11:17:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-07-07 11:17:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-07-07 11:17:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-07-07 11:17:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-07-07 11:17:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-07-07 11:17:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-07-07 11:17:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-07-07 11:17:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-07-07 11:17:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 11:17:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 11:17:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-07-07 11:17:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:17:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 11:17:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:17:54,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 11:17:54,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-07 11:17:54,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-07 11:17:54,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:17:54,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 11:17:54,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 11:17:54,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 11:17:54,605 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:17:54,606 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 11:17:54,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:17:54 BoogieIcfgContainer [2020-07-07 11:17:54,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:17:54,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:17:54,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:17:54,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:17:54,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:17:53" (1/3) ... [2020-07-07 11:17:54,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65669282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:17:54, skipping insertion in model container [2020-07-07 11:17:54,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:17:54" (2/3) ... [2020-07-07 11:17:54,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65669282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:17:54, skipping insertion in model container [2020-07-07 11:17:54,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:17:54" (3/3) ... [2020-07-07 11:17:54,618 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list.i [2020-07-07 11:17:54,629 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:17:54,635 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:17:54,649 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:17:54,668 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:17:54,668 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:17:54,668 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:17:54,668 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:17:54,669 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:17:54,669 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:17:54,669 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:17:54,669 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:17:54,687 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-07-07 11:17:54,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-07 11:17:54,694 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:17:54,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:17:54,695 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:17:54,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:17:54,701 INFO L82 PathProgramCache]: Analyzing trace with hash 2070742689, now seen corresponding path program 1 times [2020-07-07 11:17:54,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:17:54,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86872545] [2020-07-07 11:17:54,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:17:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:17:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:17:55,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:17:55,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86872545] [2020-07-07 11:17:55,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:17:55,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 11:17:55,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350412956] [2020-07-07 11:17:55,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 11:17:55,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:17:55,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 11:17:55,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:17:55,164 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 8 states. [2020-07-07 11:17:55,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:17:55,454 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2020-07-07 11:17:55,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 11:17:55,456 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-07-07 11:17:55,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:17:55,466 INFO L225 Difference]: With dead ends: 55 [2020-07-07 11:17:55,466 INFO L226 Difference]: Without dead ends: 26 [2020-07-07 11:17:55,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-07-07 11:17:55,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-07 11:17:55,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-07 11:17:55,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-07 11:17:55,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-07-07 11:17:55,517 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 12 [2020-07-07 11:17:55,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:17:55,517 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-07-07 11:17:55,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 11:17:55,517 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-07-07 11:17:55,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-07 11:17:55,518 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:17:55,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:17:55,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:17:55,519 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:17:55,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:17:55,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1302580324, now seen corresponding path program 1 times [2020-07-07 11:17:55,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:17:55,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073785711] [2020-07-07 11:17:55,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:17:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:17:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:17:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:17:55,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:17:55,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073785711] [2020-07-07 11:17:55,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:17:55,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 11:17:55,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250583403] [2020-07-07 11:17:55,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 11:17:55,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:17:55,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 11:17:55,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-07-07 11:17:55,838 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 11 states. [2020-07-07 11:17:56,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:17:56,377 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2020-07-07 11:17:56,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-07 11:17:56,378 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-07-07 11:17:56,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:17:56,379 INFO L225 Difference]: With dead ends: 28 [2020-07-07 11:17:56,379 INFO L226 Difference]: Without dead ends: 25 [2020-07-07 11:17:56,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-07-07 11:17:56,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-07 11:17:56,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-07 11:17:56,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-07 11:17:56,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2020-07-07 11:17:56,388 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 18 [2020-07-07 11:17:56,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:17:56,389 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2020-07-07 11:17:56,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 11:17:56,389 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2020-07-07 11:17:56,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-07 11:17:56,390 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:17:56,390 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:17:56,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:17:56,391 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:17:56,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:17:56,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1070618069, now seen corresponding path program 1 times [2020-07-07 11:17:56,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:17:56,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955900134] [2020-07-07 11:17:56,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:17:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:17:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:17:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:17:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:17:56,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:17:56,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955900134] [2020-07-07 11:17:56,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036421676] [2020-07-07 11:17:56,668 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 [2020-07-07 11:17:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:17:56,778 INFO L264 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-07 11:17:56,785 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:17:56,877 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-07 11:17:56,879 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:17:56,882 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:17:56,883 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:17:56,883 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-07 11:17:56,952 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-07 11:17:56,952 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:17:56,963 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:17:56,964 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:17:56,964 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-07 11:17:56,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:17:56,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:17:56,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 15 [2020-07-07 11:17:56,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429290271] [2020-07-07 11:17:56,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 11:17:56,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:17:56,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 11:17:56,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-07-07 11:17:56,971 INFO L87 Difference]: Start difference. First operand 25 states and 24 transitions. Second operand 7 states. [2020-07-07 11:17:57,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:17:57,048 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-07-07 11:17:57,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 11:17:57,049 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-07-07 11:17:57,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:17:57,049 INFO L225 Difference]: With dead ends: 25 [2020-07-07 11:17:57,049 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 11:17:57,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-07-07 11:17:57,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 11:17:57,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 11:17:57,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 11:17:57,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 11:17:57,051 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-07-07 11:17:57,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:17:57,052 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 11:17:57,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 11:17:57,052 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 11:17:57,052 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 11:17:57,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-07 11:17:57,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 11:17:57,609 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:17:57,610 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|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#length)| |#length|) (= |~#head~0.offset| |old(~#head~0.offset)|)) [2020-07-07 11:17:57,610 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:17:57,610 INFO L268 CegarLoopResult]: For program point list_delFINAL(lines 871 874) no Hoare annotation was computed. [2020-07-07 11:17:57,610 INFO L268 CegarLoopResult]: For program point list_delEXIT(lines 871 874) no Hoare annotation was computed. [2020-07-07 11:17:57,610 INFO L268 CegarLoopResult]: For program point L872(line 872) no Hoare annotation was computed. [2020-07-07 11:17:57,610 INFO L264 CegarLoopResult]: At program point list_delENTRY(lines 871 874) the Hoare annotation is: (or (not (= 1 (select (select |old(#memory_int)| |list_del_#in~entry.base|) 8))) (and (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (not (<= |~#head~0.offset| 0)) (not (<= 0 |~#head~0.offset|)) (not (= 0 |list_del_#in~entry.offset|))) [2020-07-07 11:17:57,610 INFO L264 CegarLoopResult]: At program point L872-2(line 872) the Hoare annotation is: (or (not (= 1 (select (select |old(#memory_int)| |list_del_#in~entry.base|) 8))) (not (<= |~#head~0.offset| 0)) (not (= 0 |list_del_#in~entry.offset|)) (not (<= 0 |~#head~0.offset|))) [2020-07-07 11:17:57,611 INFO L268 CegarLoopResult]: For program point L872-3(line 872) no Hoare annotation was computed. [2020-07-07 11:17:57,611 INFO L264 CegarLoopResult]: At program point L867-2(line 867) the Hoare annotation is: (or (not (<= |~#head~0.offset| 0)) (not (<= 0 |~#head~0.offset|)) (not (= (select (select |old(#memory_int)| |list_add_#in~new.base|) (+ |list_add_#in~new.offset| 8)) 0))) [2020-07-07 11:17:57,611 INFO L264 CegarLoopResult]: At program point list_addENTRY(lines 866 869) the Hoare annotation is: (or (and (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (not (<= |~#head~0.offset| 0)) (not (<= 0 |~#head~0.offset|)) (not (= (select (select |old(#memory_int)| |list_add_#in~new.base|) (+ |list_add_#in~new.offset| 8)) 0))) [2020-07-07 11:17:57,611 INFO L268 CegarLoopResult]: For program point L867-3(line 867) no Hoare annotation was computed. [2020-07-07 11:17:57,611 INFO L268 CegarLoopResult]: For program point list_addFINAL(lines 866 869) no Hoare annotation was computed. [2020-07-07 11:17:57,611 INFO L268 CegarLoopResult]: For program point list_addEXIT(lines 866 869) no Hoare annotation was computed. [2020-07-07 11:17:57,611 INFO L268 CegarLoopResult]: For program point L867(line 867) no Hoare annotation was computed. [2020-07-07 11:17:57,612 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-07-07 11:17:57,612 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2020-07-07 11:17:57,612 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2020-07-07 11:17:57,612 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-07-07 11:17:57,612 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:17:57,612 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= |~#head~0.offset| 0) (<= 0 |~#head~0.offset|)) [2020-07-07 11:17:57,612 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 11:17:57,612 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:17:57,612 INFO L268 CegarLoopResult]: For program point L881(lines 881 886) no Hoare annotation was computed. [2020-07-07 11:17:57,613 INFO L268 CegarLoopResult]: For program point L881-1(lines 881 886) no Hoare annotation was computed. [2020-07-07 11:17:57,613 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 878 888) the Hoare annotation is: (or (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (not (<= |~#head~0.offset| 0)) (not (<= 0 |~#head~0.offset|))) [2020-07-07 11:17:57,613 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 878 888) no Hoare annotation was computed. [2020-07-07 11:17:57,613 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 878 888) no Hoare annotation was computed. [2020-07-07 11:17:57,613 INFO L264 CegarLoopResult]: At program point L884(line 884) the Hoare annotation is: (or (not (<= |~#head~0.offset| 0)) (not (<= 0 |~#head~0.offset|)) (and (= 0 (select (select |#memory_int| main_~dev~0.base) (+ main_~dev~0.offset 8))) (= 0 main_~dev~0.offset))) [2020-07-07 11:17:57,614 INFO L264 CegarLoopResult]: At program point L883(line 883) the Hoare annotation is: (or (not (<= |~#head~0.offset| 0)) (not (<= 0 |~#head~0.offset|)) (and (= 0 (select (select |#memory_int| main_~dev~0.base) (+ main_~dev~0.offset 8))) (= 0 main_~dev~0.offset))) [2020-07-07 11:17:57,614 INFO L264 CegarLoopResult]: At program point L883-1(line 883) the Hoare annotation is: (or (not (<= |~#head~0.offset| 0)) (and (= 1 (select (select |#memory_int| main_~dev~0.base) 8)) (= 0 main_~dev~0.offset)) (not (<= 0 |~#head~0.offset|))) [2020-07-07 11:17:57,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:17:57 BoogieIcfgContainer [2020-07-07 11:17:57,620 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:17:57,622 INFO L168 Benchmark]: Toolchain (without parser) took 4250.50 ms. Allocated memory was 145.8 MB in the beginning and 248.0 MB in the end (delta: 102.2 MB). Free memory was 101.4 MB in the beginning and 189.0 MB in the end (delta: -87.6 MB). Peak memory consumption was 111.7 MB. Max. memory is 7.1 GB. [2020-07-07 11:17:57,622 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 11:17:57,623 INFO L168 Benchmark]: CACSL2BoogieTranslator took 629.98 ms. Allocated memory was 145.8 MB in the beginning and 203.9 MB in the end (delta: 58.2 MB). Free memory was 101.2 MB in the beginning and 169.8 MB in the end (delta: -68.6 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-07-07 11:17:57,624 INFO L168 Benchmark]: Boogie Preprocessor took 53.39 ms. Allocated memory is still 203.9 MB. Free memory was 169.8 MB in the beginning and 166.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2020-07-07 11:17:57,625 INFO L168 Benchmark]: RCFGBuilder took 553.76 ms. Allocated memory is still 203.9 MB. Free memory was 166.2 MB in the beginning and 123.4 MB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. [2020-07-07 11:17:57,626 INFO L168 Benchmark]: TraceAbstraction took 3008.79 ms. Allocated memory was 203.9 MB in the beginning and 248.0 MB in the end (delta: 44.0 MB). Free memory was 122.7 MB in the beginning and 189.0 MB in the end (delta: -66.3 MB). Peak memory consumption was 74.8 MB. Max. memory is 7.1 GB. [2020-07-07 11:17:57,630 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 629.98 ms. Allocated memory was 145.8 MB in the beginning and 203.9 MB in the end (delta: 58.2 MB). Free memory was 101.2 MB in the beginning and 169.8 MB in the end (delta: -68.6 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.39 ms. Allocated memory is still 203.9 MB. Free memory was 169.8 MB in the beginning and 166.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 553.76 ms. Allocated memory is still 203.9 MB. Free memory was 166.2 MB in the beginning and 123.4 MB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3008.79 ms. Allocated memory was 203.9 MB in the beginning and 248.0 MB in the end (delta: 44.0 MB). Free memory was 122.7 MB in the beginning and 189.0 MB in the end (delta: -66.3 MB). Peak memory consumption was 74.8 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 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 71 SDslu, 106 SDs, 0 SdLazy, 244 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 21 PreInvPairs, 23 NumberOfFragments, 217 HoareAnnotationTreeSize, 21 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 235 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 9914 SizeOfPredicates, 8 NumberOfNonLiveVariables, 158 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 3/4 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...