/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -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-d623d84 [2020-07-21 01:11:33,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 01:11:33,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 01:11:33,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 01:11:33,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 01:11:33,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 01:11:33,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 01:11:33,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 01:11:33,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 01:11:33,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 01:11:33,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 01:11:33,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 01:11:33,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:11:33,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:11:33,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:11:33,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:11:33,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:11:33,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:11:33,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:11:33,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:11:33,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:11:33,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:11:33,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:11:33,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:11:33,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 01:11:33,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 01:11:33,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 01:11:33,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 01:11:33,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 01:11:33,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 01:11:33,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 01:11:33,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 01:11:33,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 01:11:33,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 01:11:33,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 01:11:33,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 01:11:33,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 01:11:33,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 01:11:33,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:11:33,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:11:33,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:11:33,267 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 [2020-07-21 01:11:33,284 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:11:33,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:11:33,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:11:33,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:11:33,286 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:11:33,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:11:33,287 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:11:33,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:11:33,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:11:33,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:11:33,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:11:33,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:11:33,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:11:33,288 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:11:33,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:11:33,289 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:11:33,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:11:33,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:11:33,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:11:33,289 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:11:33,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:11:33,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:11:33,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:11:33,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:11:33,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:11:33,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:11:33,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:11:33,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:11:33,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:11:33,292 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 01:11:33,678 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:11:33,693 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:11:33,697 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:11:33,699 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:11:33,699 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:11:33,700 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list.i [2020-07-21 01:11:33,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7e0c7e1c/30ba479778ee4dac86832beaccd00888/FLAG5db8bda5c [2020-07-21 01:11:34,393 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:11:34,394 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list.i [2020-07-21 01:11:34,417 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7e0c7e1c/30ba479778ee4dac86832beaccd00888/FLAG5db8bda5c [2020-07-21 01:11:34,628 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7e0c7e1c/30ba479778ee4dac86832beaccd00888 [2020-07-21 01:11:34,638 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:11:34,640 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:11:34,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:11:34,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:11:34,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:11:34,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:11:34" (1/1) ... [2020-07-21 01:11:34,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4be96cac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:11:34, skipping insertion in model container [2020-07-21 01:11:34,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:11:34" (1/1) ... [2020-07-21 01:11:34,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:11:34,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:11:35,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:11:35,230 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:11:35,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:11:35,412 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:11:35,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:11:35 WrapperNode [2020-07-21 01:11:35,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:11:35,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:11:35,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:11:35,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:11:35,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:11:35" (1/1) ... [2020-07-21 01:11:35,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:11:35" (1/1) ... [2020-07-21 01:11:35,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:11:35" (1/1) ... [2020-07-21 01:11:35,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:11:35" (1/1) ... [2020-07-21 01:11:35,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:11:35" (1/1) ... [2020-07-21 01:11:35,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:11:35" (1/1) ... [2020-07-21 01:11:35,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:11:35" (1/1) ... [2020-07-21 01:11:35,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:11:35,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:11:35,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:11:35,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:11:35,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:11:35" (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 [2020-07-21 01:11:35,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:11:35,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:11:35,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-21 01:11:35,653 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-07-21 01:11:35,654 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-07-21 01:11:35,655 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:11:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:11:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-21 01:11:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-07-21 01:11:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-07-21 01:11:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-07-21 01:11:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-07-21 01:11:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-07-21 01:11:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-07-21 01:11:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-07-21 01:11:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-07-21 01:11:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-07-21 01:11:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-07-21 01:11:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-07-21 01:11:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-07-21 01:11:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-07-21 01:11:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-07-21 01:11:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-07-21 01:11:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-07-21 01:11:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-07-21 01:11:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-07-21 01:11:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-07-21 01:11:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-07-21 01:11:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-07-21 01:11:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-07-21 01:11:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-07-21 01:11:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-07-21 01:11:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-07-21 01:11:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-07-21 01:11:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-07-21 01:11:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-07-21 01:11:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-21 01:11:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-07-21 01:11:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-07-21 01:11:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-07-21 01:11:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-07-21 01:11:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-07-21 01:11:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-07-21 01:11:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-07-21 01:11:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-07-21 01:11:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-07-21 01:11:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 01:11:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-07-21 01:11:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-07-21 01:11:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-07-21 01:11:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-07-21 01:11:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-07-21 01:11:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-07-21 01:11:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-07-21 01:11:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-07-21 01:11:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-07-21 01:11:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-07-21 01:11:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-07-21 01:11:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-07-21 01:11:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-07-21 01:11:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-07-21 01:11:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-07-21 01:11:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-21 01:11:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-07-21 01:11:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-07-21 01:11:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-07-21 01:11:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-07-21 01:11:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-07-21 01:11:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-07-21 01:11:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-07-21 01:11:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-07-21 01:11:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-07-21 01:11:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-07-21 01:11:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-07-21 01:11:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-07-21 01:11:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-07-21 01:11:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-07-21 01:11:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-07-21 01:11:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-07-21 01:11:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-07-21 01:11:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-07-21 01:11:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-07-21 01:11:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-07-21 01:11:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-07-21 01:11:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-07-21 01:11:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-07-21 01:11:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-07-21 01:11:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-07-21 01:11:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-07-21 01:11:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-07-21 01:11:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-07-21 01:11:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-07-21 01:11:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-07-21 01:11:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-07-21 01:11:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-07-21 01:11:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-07-21 01:11:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-07-21 01:11:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-07-21 01:11:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-07-21 01:11:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-07-21 01:11:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-07-21 01:11:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-07-21 01:11:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-07-21 01:11:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-07-21 01:11:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-07-21 01:11:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-07-21 01:11:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-07-21 01:11:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-07-21 01:11:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-07-21 01:11:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 01:11:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 01:11:35,672 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 01:11:35,673 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 01:11:35,673 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 01:11:35,673 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-07-21 01:11:35,673 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 01:11:35,673 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-07-21 01:11:35,673 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-07-21 01:11:35,673 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-07-21 01:11:35,674 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-07-21 01:11:35,674 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-07-21 01:11:35,674 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-07-21 01:11:35,674 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-07-21 01:11:35,674 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-07-21 01:11:35,674 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-07-21 01:11:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-07-21 01:11:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-07-21 01:11:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-07-21 01:11:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 01:11:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 01:11:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-07-21 01:11:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:11:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 01:11:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:11:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 01:11:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-21 01:11:35,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 01:11:35,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:11:35,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 01:11:35,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 01:11:35,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 01:11:36,185 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:11:36,186 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 01:11:36,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:11:36 BoogieIcfgContainer [2020-07-21 01:11:36,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:11:36,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:11:36,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:11:36,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:11:36,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:11:34" (1/3) ... [2020-07-21 01:11:36,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b348aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:11:36, skipping insertion in model container [2020-07-21 01:11:36,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:11:35" (2/3) ... [2020-07-21 01:11:36,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b348aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:11:36, skipping insertion in model container [2020-07-21 01:11:36,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:11:36" (3/3) ... [2020-07-21 01:11:36,200 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list.i [2020-07-21 01:11:36,212 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:11:36,222 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:11:36,238 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:11:36,266 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:11:36,266 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:11:36,266 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:11:36,266 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:11:36,267 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:11:36,267 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:11:36,267 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:11:36,267 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:11:36,289 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-07-21 01:11:36,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 01:11:36,296 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:11:36,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:11:36,298 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:11:36,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:11:36,305 INFO L82 PathProgramCache]: Analyzing trace with hash 2070742689, now seen corresponding path program 1 times [2020-07-21 01:11:36,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:11:36,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819138780] [2020-07-21 01:11:36,316 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:11:36,596 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:11:36,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:11:36,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-21 01:11:36,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:11:36,775 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 [2020-07-21 01:11:36,776 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:11:36,790 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:11:36,791 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:11:36,791 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-21 01:11:36,872 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 [2020-07-21 01:11:36,875 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:11:36,881 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:11:36,881 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:11:36,882 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-21 01:11:36,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:11:36,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:11:36,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819138780] [2020-07-21 01:11:36,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:11:36,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:11:36,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397167978] [2020-07-21 01:11:36,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:11:36,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:11:36,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:11:36,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:11:36,938 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-07-21 01:11:37,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:11:37,079 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2020-07-21 01:11:37,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 01:11:37,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-21 01:11:37,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:11:37,092 INFO L225 Difference]: With dead ends: 55 [2020-07-21 01:11:37,093 INFO L226 Difference]: Without dead ends: 26 [2020-07-21 01:11:37,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:11:37,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-21 01:11:37,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-21 01:11:37,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-21 01:11:37,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-07-21 01:11:37,152 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 12 [2020-07-21 01:11:37,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:11:37,154 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-07-21 01:11:37,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:11:37,155 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-07-21 01:11:37,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 01:11:37,155 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:11:37,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:11:37,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:11:37,372 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:11:37,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:11:37,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1302580324, now seen corresponding path program 1 times [2020-07-21 01:11:37,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:11:37,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614675280] [2020-07-21 01:11:37,375 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:11:37,548 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:11:37,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:11:37,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-21 01:11:37,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:11:37,575 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 [2020-07-21 01:11:37,576 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:11:37,583 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:11:37,583 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:11:37,584 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-21 01:11:37,620 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 [2020-07-21 01:11:37,622 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:11:37,624 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:11:37,624 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:11:37,625 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-21 01:11:37,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:11:37,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:11:37,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614675280] [2020-07-21 01:11:37,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:11:37,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 01:11:37,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358834439] [2020-07-21 01:11:37,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:11:37,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:11:37,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:11:37,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:11:37,641 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 7 states. [2020-07-21 01:11:37,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:11:37,725 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2020-07-21 01:11:37,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:11:37,726 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-07-21 01:11:37,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:11:37,727 INFO L225 Difference]: With dead ends: 28 [2020-07-21 01:11:37,727 INFO L226 Difference]: Without dead ends: 25 [2020-07-21 01:11:37,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:11:37,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-21 01:11:37,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-21 01:11:37,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-21 01:11:37,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2020-07-21 01:11:37,735 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 18 [2020-07-21 01:11:37,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:11:37,736 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2020-07-21 01:11:37,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:11:37,736 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2020-07-21 01:11:37,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 01:11:37,737 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:11:37,737 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] [2020-07-21 01:11:37,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:11:37,952 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:11:37,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:11:37,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1070618069, now seen corresponding path program 1 times [2020-07-21 01:11:37,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:11:37,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156057249] [2020-07-21 01:11:37,954 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:11:38,128 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:11:38,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:11:38,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-21 01:11:38,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:11:38,167 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 [2020-07-21 01:11:38,168 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:11:38,173 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:11:38,174 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:11:38,174 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-21 01:11:38,230 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 [2020-07-21 01:11:38,232 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:11:38,235 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:11:38,237 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:11:38,237 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-21 01:11:38,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:11:38,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:11:38,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156057249] [2020-07-21 01:11:38,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:11:38,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 01:11:38,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12359701] [2020-07-21 01:11:38,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:11:38,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:11:38,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:11:38,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:11:38,265 INFO L87 Difference]: Start difference. First operand 25 states and 24 transitions. Second operand 7 states. [2020-07-21 01:11:38,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:11:38,385 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-07-21 01:11:38,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:11:38,386 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-07-21 01:11:38,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:11:38,387 INFO L225 Difference]: With dead ends: 25 [2020-07-21 01:11:38,388 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 01:11:38,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:11:38,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 01:11:38,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 01:11:38,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 01:11:38,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 01:11:38,391 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-07-21 01:11:38,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:11:38,392 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 01:11:38,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:11:38,393 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 01:11:38,393 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 01:11:38,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:11:38,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 01:11:38,746 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:11:38,747 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 01:11:38,747 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:11:38,747 INFO L268 CegarLoopResult]: For program point list_delFINAL(lines 871 874) no Hoare annotation was computed. [2020-07-21 01:11:38,747 INFO L268 CegarLoopResult]: For program point list_delEXIT(lines 871 874) no Hoare annotation was computed. [2020-07-21 01:11:38,747 INFO L268 CegarLoopResult]: For program point L872(line 872) no Hoare annotation was computed. [2020-07-21 01:11:38,748 INFO L264 CegarLoopResult]: At program point list_delENTRY(lines 871 874) the Hoare annotation is: (let ((.cse0 (+ |list_del_#in~entry.offset| 8))) (or (= 1 (select (select |#memory_int| |list_del_#in~entry.base|) .cse0)) (not (= 1 (select (select |old(#memory_int)| |list_del_#in~entry.base|) .cse0))))) [2020-07-21 01:11:38,748 INFO L264 CegarLoopResult]: At program point L872-2(line 872) the Hoare annotation is: (not (= 1 (select (select |old(#memory_int)| |list_del_#in~entry.base|) (+ |list_del_#in~entry.offset| 8)))) [2020-07-21 01:11:38,748 INFO L268 CegarLoopResult]: For program point L872-3(line 872) no Hoare annotation was computed. [2020-07-21 01:11:38,748 INFO L264 CegarLoopResult]: At program point L867-2(line 867) the Hoare annotation is: (not (= (select (select |old(#memory_int)| |list_add_#in~new.base|) (+ |list_add_#in~new.offset| 8)) 0)) [2020-07-21 01:11:38,749 INFO L264 CegarLoopResult]: At program point list_addENTRY(lines 866 869) the Hoare annotation is: (let ((.cse0 (+ |list_add_#in~new.offset| 8))) (or (= 0 (select (select |#memory_int| |list_add_#in~new.base|) .cse0)) (not (= (select (select |old(#memory_int)| |list_add_#in~new.base|) .cse0) 0)))) [2020-07-21 01:11:38,749 INFO L268 CegarLoopResult]: For program point L867-3(line 867) no Hoare annotation was computed. [2020-07-21 01:11:38,749 INFO L268 CegarLoopResult]: For program point list_addFINAL(lines 866 869) no Hoare annotation was computed. [2020-07-21 01:11:38,749 INFO L268 CegarLoopResult]: For program point list_addEXIT(lines 866 869) no Hoare annotation was computed. [2020-07-21 01:11:38,749 INFO L268 CegarLoopResult]: For program point L867(line 867) no Hoare annotation was computed. [2020-07-21 01:11:38,749 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-07-21 01:11:38,749 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2020-07-21 01:11:38,750 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2020-07-21 01:11:38,750 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-07-21 01:11:38,750 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:11:38,750 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 01:11:38,750 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 01:11:38,750 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:11:38,751 INFO L268 CegarLoopResult]: For program point L881(lines 881 886) no Hoare annotation was computed. [2020-07-21 01:11:38,751 INFO L268 CegarLoopResult]: For program point L881-1(lines 881 886) no Hoare annotation was computed. [2020-07-21 01:11:38,751 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 878 888) the Hoare annotation is: true [2020-07-21 01:11:38,751 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 878 888) no Hoare annotation was computed. [2020-07-21 01:11:38,751 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 878 888) no Hoare annotation was computed. [2020-07-21 01:11:38,751 INFO L264 CegarLoopResult]: At program point L884(line 884) the Hoare annotation is: (= 0 (select (select |#memory_int| main_~dev~0.base) (+ main_~dev~0.offset 8))) [2020-07-21 01:11:38,752 INFO L264 CegarLoopResult]: At program point L883(line 883) the Hoare annotation is: (= 0 (select (select |#memory_int| main_~dev~0.base) (+ main_~dev~0.offset 8))) [2020-07-21 01:11:38,752 INFO L264 CegarLoopResult]: At program point L883-1(line 883) the Hoare annotation is: (= 1 (select (select |#memory_int| main_~dev~0.base) (+ main_~dev~0.offset 8))) [2020-07-21 01:11:38,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:11:38 BoogieIcfgContainer [2020-07-21 01:11:38,760 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:11:38,763 INFO L168 Benchmark]: Toolchain (without parser) took 4123.19 ms. Allocated memory was 135.8 MB in the beginning and 255.9 MB in the end (delta: 120.1 MB). Free memory was 99.5 MB in the beginning and 218.1 MB in the end (delta: -118.6 MB). Peak memory consumption was 119.1 MB. Max. memory is 7.1 GB. [2020-07-21 01:11:38,769 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 01:11:38,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 771.51 ms. Allocated memory was 135.8 MB in the beginning and 199.8 MB in the end (delta: 64.0 MB). Free memory was 99.1 MB in the beginning and 164.9 MB in the end (delta: -65.9 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2020-07-21 01:11:38,771 INFO L168 Benchmark]: Boogie Preprocessor took 128.81 ms. Allocated memory is still 199.8 MB. Free memory was 164.9 MB in the beginning and 162.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-21 01:11:38,772 INFO L168 Benchmark]: RCFGBuilder took 646.19 ms. Allocated memory is still 199.8 MB. Free memory was 161.4 MB in the beginning and 118.5 MB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. [2020-07-21 01:11:38,773 INFO L168 Benchmark]: TraceAbstraction took 2569.31 ms. Allocated memory was 199.8 MB in the beginning and 255.9 MB in the end (delta: 56.1 MB). Free memory was 117.8 MB in the beginning and 218.1 MB in the end (delta: -100.2 MB). Peak memory consumption was 73.4 MB. Max. memory is 7.1 GB. [2020-07-21 01:11:38,788 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 771.51 ms. Allocated memory was 135.8 MB in the beginning and 199.8 MB in the end (delta: 64.0 MB). Free memory was 99.1 MB in the beginning and 164.9 MB in the end (delta: -65.9 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.81 ms. Allocated memory is still 199.8 MB. Free memory was 164.9 MB in the beginning and 162.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 646.19 ms. Allocated memory is still 199.8 MB. Free memory was 161.4 MB in the beginning and 118.5 MB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2569.31 ms. Allocated memory was 199.8 MB in the beginning and 255.9 MB in the end (delta: 56.1 MB). Free memory was 117.8 MB in the beginning and 218.1 MB in the end (delta: -100.2 MB). Peak memory consumption was 73.4 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: 2.3s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 14 SDslu, 189 SDs, 0 SdLazy, 102 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s 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, 92 HoareAnnotationTreeSize, 21 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 2977 SizeOfPredicates, 22 NumberOfNonLiveVariables, 389 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 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...