/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 NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -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 13:40:27,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 13:40:27,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 13:40:27,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 13:40:27,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 13:40:27,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 13:40:27,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 13:40:27,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 13:40:27,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 13:40:27,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 13:40:27,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 13:40:27,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 13:40:27,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 13:40:27,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 13:40:27,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 13:40:27,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 13:40:27,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 13:40:27,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 13:40:27,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 13:40:27,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 13:40:27,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 13:40:27,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 13:40:27,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 13:40:27,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 13:40:27,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 13:40:27,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 13:40:27,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 13:40:27,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 13:40:27,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 13:40:27,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 13:40:27,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 13:40:27,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 13:40:27,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 13:40:27,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 13:40:27,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 13:40:27,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 13:40:27,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 13:40:27,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 13:40:27,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 13:40:27,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 13:40:27,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 13:40:27,581 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 13:40:27,601 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 13:40:27,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 13:40:27,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 13:40:27,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 13:40:27,604 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 13:40:27,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 13:40:27,605 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 13:40:27,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 13:40:27,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 13:40:27,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 13:40:27,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 13:40:27,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 13:40:27,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 13:40:27,606 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 13:40:27,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 13:40:27,607 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 13:40:27,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 13:40:27,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 13:40:27,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 13:40:27,607 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 13:40:27,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 13:40:27,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 13:40:27,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 13:40:27,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 13:40:27,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 13:40:27,609 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 13:40:27,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:40:27,609 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 13:40:27,609 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 13:40:27,610 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 -> NUM_FUNCTIONS 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 -> 2 [2020-07-21 13:40:27,968 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 13:40:27,987 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 13:40:27,992 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 13:40:27,995 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 13:40:27,996 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 13:40:27,997 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list.i [2020-07-21 13:40:28,095 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/545b3c81c/89f34350861a42c792434a2a0a0e6683/FLAGffc4d676b [2020-07-21 13:40:28,840 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 13:40:28,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list.i [2020-07-21 13:40:28,860 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/545b3c81c/89f34350861a42c792434a2a0a0e6683/FLAGffc4d676b [2020-07-21 13:40:29,058 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/545b3c81c/89f34350861a42c792434a2a0a0e6683 [2020-07-21 13:40:29,075 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 13:40:29,079 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 13:40:29,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 13:40:29,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 13:40:29,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 13:40:29,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:40:29" (1/1) ... [2020-07-21 13:40:29,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19856784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:29, skipping insertion in model container [2020-07-21 13:40:29,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:40:29" (1/1) ... [2020-07-21 13:40:29,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 13:40:29,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 13:40:29,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:40:29,790 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 13:40:29,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:40:29,910 INFO L208 MainTranslator]: Completed translation [2020-07-21 13:40:29,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:29 WrapperNode [2020-07-21 13:40:29,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 13:40:29,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 13:40:29,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 13:40:29,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 13:40:29,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:29" (1/1) ... [2020-07-21 13:40:29,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:29" (1/1) ... [2020-07-21 13:40:29,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:29" (1/1) ... [2020-07-21 13:40:29,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:29" (1/1) ... [2020-07-21 13:40:29,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:29" (1/1) ... [2020-07-21 13:40:29,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:29" (1/1) ... [2020-07-21 13:40:29,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:29" (1/1) ... [2020-07-21 13:40:29,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 13:40:29,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 13:40:29,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 13:40:29,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 13:40:29,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:29" (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 13:40:30,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 13:40:30,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 13:40:30,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-21 13:40:30,090 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-07-21 13:40:30,090 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-07-21 13:40:30,091 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 13:40:30,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 13:40:30,091 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-21 13:40:30,091 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-07-21 13:40:30,092 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-07-21 13:40:30,092 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-07-21 13:40:30,092 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-07-21 13:40:30,092 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-07-21 13:40:30,092 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-07-21 13:40:30,093 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-07-21 13:40:30,093 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-07-21 13:40:30,093 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-07-21 13:40:30,093 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-07-21 13:40:30,094 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-07-21 13:40:30,094 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-07-21 13:40:30,094 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-07-21 13:40:30,094 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-07-21 13:40:30,094 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-07-21 13:40:30,095 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-07-21 13:40:30,095 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-07-21 13:40:30,095 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-07-21 13:40:30,095 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-07-21 13:40:30,095 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-07-21 13:40:30,096 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-07-21 13:40:30,096 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-07-21 13:40:30,096 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-07-21 13:40:30,096 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-07-21 13:40:30,096 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-07-21 13:40:30,096 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-07-21 13:40:30,097 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-07-21 13:40:30,097 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-07-21 13:40:30,097 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-21 13:40:30,097 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-07-21 13:40:30,097 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-07-21 13:40:30,098 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-07-21 13:40:30,098 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-07-21 13:40:30,098 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-07-21 13:40:30,098 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-07-21 13:40:30,098 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-07-21 13:40:30,099 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-07-21 13:40:30,099 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-07-21 13:40:30,099 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 13:40:30,099 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-07-21 13:40:30,099 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-07-21 13:40:30,099 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-07-21 13:40:30,100 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-07-21 13:40:30,100 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-07-21 13:40:30,100 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-07-21 13:40:30,100 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-07-21 13:40:30,100 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-07-21 13:40:30,101 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-07-21 13:40:30,101 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-07-21 13:40:30,101 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-07-21 13:40:30,101 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-07-21 13:40:30,102 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-07-21 13:40:30,102 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-07-21 13:40:30,102 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-07-21 13:40:30,102 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-21 13:40:30,102 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-07-21 13:40:30,102 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-07-21 13:40:30,103 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-07-21 13:40:30,103 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-07-21 13:40:30,103 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-07-21 13:40:30,103 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-07-21 13:40:30,103 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-07-21 13:40:30,103 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-07-21 13:40:30,104 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-07-21 13:40:30,104 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-07-21 13:40:30,104 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-07-21 13:40:30,104 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-07-21 13:40:30,104 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-07-21 13:40:30,104 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-07-21 13:40:30,105 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-07-21 13:40:30,105 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-07-21 13:40:30,105 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-07-21 13:40:30,105 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-07-21 13:40:30,105 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-07-21 13:40:30,106 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-07-21 13:40:30,106 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-07-21 13:40:30,106 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-07-21 13:40:30,106 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-07-21 13:40:30,106 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-07-21 13:40:30,106 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-07-21 13:40:30,107 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-07-21 13:40:30,107 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-07-21 13:40:30,107 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-07-21 13:40:30,107 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-07-21 13:40:30,107 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-07-21 13:40:30,108 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-07-21 13:40:30,108 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-07-21 13:40:30,108 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-07-21 13:40:30,108 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-07-21 13:40:30,108 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-07-21 13:40:30,108 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-07-21 13:40:30,109 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-07-21 13:40:30,109 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-07-21 13:40:30,109 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-07-21 13:40:30,109 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-07-21 13:40:30,109 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-07-21 13:40:30,109 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-07-21 13:40:30,110 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-07-21 13:40:30,110 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-07-21 13:40:30,110 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-07-21 13:40:30,110 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-07-21 13:40:30,110 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 13:40:30,111 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 13:40:30,111 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 13:40:30,111 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 13:40:30,111 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 13:40:30,111 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-07-21 13:40:30,111 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 13:40:30,111 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-07-21 13:40:30,112 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-07-21 13:40:30,112 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-07-21 13:40:30,112 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-07-21 13:40:30,112 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-07-21 13:40:30,112 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-07-21 13:40:30,112 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-07-21 13:40:30,113 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-07-21 13:40:30,113 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-07-21 13:40:30,113 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-07-21 13:40:30,113 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-07-21 13:40:30,113 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-07-21 13:40:30,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 13:40:30,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 13:40:30,114 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-07-21 13:40:30,114 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 13:40:30,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 13:40:30,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 13:40:30,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 13:40:30,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-21 13:40:30,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 13:40:30,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 13:40:30,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 13:40:30,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 13:40:30,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 13:40:30,762 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 13:40:30,763 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 13:40:30,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:40:30 BoogieIcfgContainer [2020-07-21 13:40:30,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 13:40:30,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 13:40:30,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 13:40:30,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 13:40:30,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:40:29" (1/3) ... [2020-07-21 13:40:30,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fabef27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:40:30, skipping insertion in model container [2020-07-21 13:40:30,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:40:29" (2/3) ... [2020-07-21 13:40:30,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fabef27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:40:30, skipping insertion in model container [2020-07-21 13:40:30,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:40:30" (3/3) ... [2020-07-21 13:40:30,784 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list.i [2020-07-21 13:40:30,802 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 13:40:30,814 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 13:40:30,836 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 13:40:30,872 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 13:40:30,873 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 13:40:30,873 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 13:40:30,873 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 13:40:30,873 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 13:40:30,874 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 13:40:30,874 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 13:40:30,874 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 13:40:30,904 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-07-21 13:40:30,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 13:40:30,916 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:40:30,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:40:30,918 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:40:30,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:40:30,930 INFO L82 PathProgramCache]: Analyzing trace with hash 2070742689, now seen corresponding path program 1 times [2020-07-21 13:40:30,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:40:30,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577405188] [2020-07-21 13:40:30,945 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 13:40:31,305 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:40:31,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:40:31,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-21 13:40:31,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:40:31,453 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 13:40:31,453 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:40:31,465 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:40:31,466 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:40:31,467 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-21 13:40:31,548 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 13:40:31,552 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:40:31,559 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:40:31,560 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 13:40:31,561 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-21 13:40:31,579 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 13:40:31,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:40:31,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577405188] [2020-07-21 13:40:31,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:40:31,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 13:40:31,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388909940] [2020-07-21 13:40:31,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 13:40:31,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:40:31,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 13:40:31,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 13:40:31,624 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-07-21 13:40:31,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:40:31,780 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2020-07-21 13:40:31,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 13:40:31,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-21 13:40:31,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:40:31,803 INFO L225 Difference]: With dead ends: 55 [2020-07-21 13:40:31,803 INFO L226 Difference]: Without dead ends: 26 [2020-07-21 13:40:31,811 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 13:40:31,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-21 13:40:31,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-21 13:40:31,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-21 13:40:31,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-07-21 13:40:31,893 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 12 [2020-07-21 13:40:31,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:40:31,894 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-07-21 13:40:31,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 13:40:31,894 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-07-21 13:40:31,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 13:40:31,896 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:40:31,896 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 13:40:32,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:40:32,112 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:40:32,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:40:32,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1302580324, now seen corresponding path program 1 times [2020-07-21 13:40:32,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:40:32,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135887822] [2020-07-21 13:40:32,114 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 13:40:32,294 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:40:32,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:40:32,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-21 13:40:32,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:40:32,322 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 13:40:32,323 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:40:32,327 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:40:32,328 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:40:32,329 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-21 13:40:32,380 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 13:40:32,382 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:40:32,385 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:40:32,386 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 13:40:32,387 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-21 13:40:32,404 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 13:40:32,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:40:32,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135887822] [2020-07-21 13:40:32,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:40:32,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 13:40:32,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961499171] [2020-07-21 13:40:32,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 13:40:32,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:40:32,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 13:40:32,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-21 13:40:32,410 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 7 states. [2020-07-21 13:40:32,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:40:32,549 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2020-07-21 13:40:32,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 13:40:32,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-07-21 13:40:32,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:40:32,552 INFO L225 Difference]: With dead ends: 28 [2020-07-21 13:40:32,552 INFO L226 Difference]: Without dead ends: 25 [2020-07-21 13:40:32,554 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 13:40:32,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-21 13:40:32,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-21 13:40:32,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-21 13:40:32,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2020-07-21 13:40:32,562 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 18 [2020-07-21 13:40:32,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:40:32,563 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2020-07-21 13:40:32,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 13:40:32,563 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2020-07-21 13:40:32,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 13:40:32,565 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:40:32,565 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 13:40:32,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:40:32,781 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:40:32,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:40:32,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1070618069, now seen corresponding path program 1 times [2020-07-21 13:40:32,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:40:32,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75402296] [2020-07-21 13:40:32,783 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 13:40:32,926 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:40:32,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:40:32,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-21 13:40:32,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:40:32,960 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 13:40:32,961 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:40:32,966 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:40:32,967 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:40:32,967 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-21 13:40:33,021 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 13:40:33,023 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:40:33,027 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:40:33,028 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 13:40:33,028 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-21 13:40:33,048 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 13:40:33,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:40:33,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75402296] [2020-07-21 13:40:33,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:40:33,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 13:40:33,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61397312] [2020-07-21 13:40:33,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 13:40:33,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:40:33,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 13:40:33,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-21 13:40:33,054 INFO L87 Difference]: Start difference. First operand 25 states and 24 transitions. Second operand 7 states. [2020-07-21 13:40:33,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:40:33,195 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-07-21 13:40:33,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 13:40:33,196 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-07-21 13:40:33,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:40:33,198 INFO L225 Difference]: With dead ends: 25 [2020-07-21 13:40:33,198 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 13:40:33,199 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 13:40:33,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 13:40:33,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 13:40:33,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 13:40:33,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 13:40:33,201 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-07-21 13:40:33,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:40:33,202 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 13:40:33,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 13:40:33,202 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 13:40:33,202 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 13:40:33,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:40:33,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 13:40:33,591 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 13:40:33,592 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 13:40:33,592 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 13:40:33,592 INFO L268 CegarLoopResult]: For program point list_delFINAL(lines 871 874) no Hoare annotation was computed. [2020-07-21 13:40:33,593 INFO L268 CegarLoopResult]: For program point list_delEXIT(lines 871 874) no Hoare annotation was computed. [2020-07-21 13:40:33,593 INFO L268 CegarLoopResult]: For program point L872(line 872) no Hoare annotation was computed. [2020-07-21 13:40:33,593 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 13:40:33,594 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 13:40:33,594 INFO L268 CegarLoopResult]: For program point L872-3(line 872) no Hoare annotation was computed. [2020-07-21 13:40:33,594 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 13:40:33,594 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 13:40:33,594 INFO L268 CegarLoopResult]: For program point L867-3(line 867) no Hoare annotation was computed. [2020-07-21 13:40:33,595 INFO L268 CegarLoopResult]: For program point list_addFINAL(lines 866 869) no Hoare annotation was computed. [2020-07-21 13:40:33,595 INFO L268 CegarLoopResult]: For program point list_addEXIT(lines 866 869) no Hoare annotation was computed. [2020-07-21 13:40:33,595 INFO L268 CegarLoopResult]: For program point L867(line 867) no Hoare annotation was computed. [2020-07-21 13:40:33,595 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-07-21 13:40:33,596 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2020-07-21 13:40:33,596 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2020-07-21 13:40:33,596 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-07-21 13:40:33,596 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 13:40:33,596 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 13:40:33,597 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 13:40:33,597 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 13:40:33,597 INFO L268 CegarLoopResult]: For program point L881(lines 881 886) no Hoare annotation was computed. [2020-07-21 13:40:33,597 INFO L268 CegarLoopResult]: For program point L881-1(lines 881 886) no Hoare annotation was computed. [2020-07-21 13:40:33,597 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 878 888) the Hoare annotation is: true [2020-07-21 13:40:33,597 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 878 888) no Hoare annotation was computed. [2020-07-21 13:40:33,598 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 878 888) no Hoare annotation was computed. [2020-07-21 13:40:33,598 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 13:40:33,598 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 13:40:33,599 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 13:40:33,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:40:33 BoogieIcfgContainer [2020-07-21 13:40:33,609 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 13:40:33,612 INFO L168 Benchmark]: Toolchain (without parser) took 4535.01 ms. Allocated memory was 136.8 MB in the beginning and 254.8 MB in the end (delta: 118.0 MB). Free memory was 98.8 MB in the beginning and 219.1 MB in the end (delta: -120.2 MB). Peak memory consumption was 117.6 MB. Max. memory is 7.1 GB. [2020-07-21 13:40:33,613 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 136.8 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 13:40:33,614 INFO L168 Benchmark]: CACSL2BoogieTranslator took 828.11 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 98.4 MB in the beginning and 166.4 MB in the end (delta: -68.0 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-07-21 13:40:33,615 INFO L168 Benchmark]: Boogie Preprocessor took 81.26 ms. Allocated memory is still 201.3 MB. Free memory was 166.4 MB in the beginning and 163.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-21 13:40:33,616 INFO L168 Benchmark]: RCFGBuilder took 776.14 ms. Allocated memory is still 201.3 MB. Free memory was 163.7 MB in the beginning and 120.7 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. [2020-07-21 13:40:33,618 INFO L168 Benchmark]: TraceAbstraction took 2837.09 ms. Allocated memory was 201.3 MB in the beginning and 254.8 MB in the end (delta: 53.5 MB). Free memory was 120.0 MB in the beginning and 219.1 MB in the end (delta: -99.1 MB). Peak memory consumption was 74.2 MB. Max. memory is 7.1 GB. [2020-07-21 13:40:33,622 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 136.8 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 828.11 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 98.4 MB in the beginning and 166.4 MB in the end (delta: -68.0 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 81.26 ms. Allocated memory is still 201.3 MB. Free memory was 166.4 MB in the beginning and 163.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 776.14 ms. Allocated memory is still 201.3 MB. Free memory was 163.7 MB in the beginning and 120.7 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2837.09 ms. Allocated memory was 201.3 MB in the beginning and 254.8 MB in the end (delta: 53.5 MB). Free memory was 120.0 MB in the beginning and 219.1 MB in the end (delta: -99.1 MB). Peak memory consumption was 74.2 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: 0.5s, 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, 0.2s 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, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 54 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 2977 SizeOfPredicates, 22 NumberOfNonLiveVariables, 263 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...