/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 DAGSIZE --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/list-simple/dll2n_update_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 21:56:36,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 21:56:36,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 21:56:36,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 21:56:36,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 21:56:36,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 21:56:36,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 21:56:36,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 21:56:36,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 21:56:36,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 21:56:36,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 21:56:36,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 21:56:36,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 21:56:36,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 21:56:36,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 21:56:36,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 21:56:36,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 21:56:36,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 21:56:36,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 21:56:36,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 21:56:36,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 21:56:36,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 21:56:36,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 21:56:36,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 21:56:36,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 21:56:36,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 21:56:36,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 21:56:36,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 21:56:36,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 21:56:36,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 21:56:36,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 21:56:36,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 21:56:36,551 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 21:56:36,552 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 21:56:36,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 21:56:36,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 21:56:36,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 21:56:36,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 21:56:36,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 21:56:36,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 21:56:36,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 21:56:36,561 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 [2020-07-20 21:56:36,585 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 21:56:36,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 21:56:36,587 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 21:56:36,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 21:56:36,588 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 21:56:36,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 21:56:36,589 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 21:56:36,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 21:56:36,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 21:56:36,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 21:56:36,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 21:56:36,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 21:56:36,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 21:56:36,590 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 21:56:36,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 21:56:36,591 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 21:56:36,591 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 21:56:36,591 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 21:56:36,591 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 21:56:36,592 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 21:56:36,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 21:56:36,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:56:36,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 21:56:36,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 21:56:36,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 21:56:36,593 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 21:56:36,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:56:36,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 21:56:36,594 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 21:56:36,594 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 -> DAGSIZE 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 [2020-07-20 21:56:36,967 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 21:56:36,983 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 21:56:36,987 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 21:56:36,989 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 21:56:36,990 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 21:56:36,991 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_update_all_reverse.i [2020-07-20 21:56:37,073 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fa90f764/bdfebea953524beb8f74a9b8d2b32598/FLAGee7d74bd4 [2020-07-20 21:56:37,804 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 21:56:37,806 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_update_all_reverse.i [2020-07-20 21:56:37,832 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fa90f764/bdfebea953524beb8f74a9b8d2b32598/FLAGee7d74bd4 [2020-07-20 21:56:37,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fa90f764/bdfebea953524beb8f74a9b8d2b32598 [2020-07-20 21:56:38,006 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 21:56:38,009 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 21:56:38,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 21:56:38,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 21:56:38,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 21:56:38,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:56:37" (1/1) ... [2020-07-20 21:56:38,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48f7d5c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:56:38, skipping insertion in model container [2020-07-20 21:56:38,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:56:37" (1/1) ... [2020-07-20 21:56:38,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 21:56:38,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 21:56:38,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:56:38,609 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 21:56:38,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:56:38,732 INFO L208 MainTranslator]: Completed translation [2020-07-20 21:56:38,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:56:38 WrapperNode [2020-07-20 21:56:38,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 21:56:38,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 21:56:38,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 21:56:38,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 21:56:38,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:56:38" (1/1) ... [2020-07-20 21:56:38,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:56:38" (1/1) ... [2020-07-20 21:56:38,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:56:38" (1/1) ... [2020-07-20 21:56:38,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:56:38" (1/1) ... [2020-07-20 21:56:38,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:56:38" (1/1) ... [2020-07-20 21:56:38,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:56:38" (1/1) ... [2020-07-20 21:56:38,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:56:38" (1/1) ... [2020-07-20 21:56:38,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 21:56:38,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 21:56:38,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 21:56:38,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 21:56:38,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:56:38" (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 [2020-07-20 21:56:38,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 21:56:38,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 21:56:38,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-20 21:56:38,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-20 21:56:38,890 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-07-20 21:56:38,891 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-07-20 21:56:38,891 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-07-20 21:56:38,892 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2020-07-20 21:56:38,892 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_get_data_at [2020-07-20 21:56:38,892 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_update_at [2020-07-20 21:56:38,893 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 21:56:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 21:56:38,894 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-20 21:56:38,894 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-20 21:56:38,894 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-20 21:56:38,895 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-20 21:56:38,895 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-20 21:56:38,895 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-20 21:56:38,896 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-20 21:56:38,896 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-20 21:56:38,896 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-20 21:56:38,896 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-20 21:56:38,897 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-20 21:56:38,897 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-20 21:56:38,897 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-20 21:56:38,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-20 21:56:38,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-20 21:56:38,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-20 21:56:38,899 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-20 21:56:38,899 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-20 21:56:38,899 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-20 21:56:38,899 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-20 21:56:38,899 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-20 21:56:38,900 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-20 21:56:38,900 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-20 21:56:38,900 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-20 21:56:38,901 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-20 21:56:38,901 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-20 21:56:38,901 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-20 21:56:38,901 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-20 21:56:38,901 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-20 21:56:38,901 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-20 21:56:38,901 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-20 21:56:38,902 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-20 21:56:38,902 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-20 21:56:38,903 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-20 21:56:38,903 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-20 21:56:38,904 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-20 21:56:38,904 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-20 21:56:38,904 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-20 21:56:38,904 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-20 21:56:38,904 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-20 21:56:38,904 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-20 21:56:38,905 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-20 21:56:38,905 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-20 21:56:38,905 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-20 21:56:38,905 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-20 21:56:38,906 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-20 21:56:38,906 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-20 21:56:38,907 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-20 21:56:38,907 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-20 21:56:38,907 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-20 21:56:38,907 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-20 21:56:38,907 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-20 21:56:38,907 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 21:56:38,907 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 21:56:38,908 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-20 21:56:38,909 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 21:56:38,909 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-20 21:56:38,909 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-20 21:56:38,909 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-20 21:56:38,909 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-20 21:56:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-20 21:56:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 21:56:38,910 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-20 21:56:38,911 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-20 21:56:38,911 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-20 21:56:38,912 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 21:56:38,912 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-20 21:56:38,913 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-20 21:56:38,913 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-20 21:56:38,913 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-20 21:56:38,913 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-20 21:56:38,913 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-20 21:56:38,913 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-20 21:56:38,914 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-20 21:56:38,914 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-20 21:56:38,914 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-20 21:56:38,914 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-20 21:56:38,914 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-20 21:56:38,914 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-20 21:56:38,914 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-20 21:56:38,915 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-20 21:56:38,915 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-20 21:56:38,915 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-20 21:56:38,915 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-20 21:56:38,915 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-20 21:56:38,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-20 21:56:38,916 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-20 21:56:38,916 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-20 21:56:38,916 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-20 21:56:38,916 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-20 21:56:38,916 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-20 21:56:38,916 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-20 21:56:38,917 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-20 21:56:38,917 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-20 21:56:38,917 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-20 21:56:38,917 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-20 21:56:38,917 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-20 21:56:38,917 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-20 21:56:38,917 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-20 21:56:38,918 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-20 21:56:38,918 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-20 21:56:38,918 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-20 21:56:38,918 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-20 21:56:38,919 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-20 21:56:38,919 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-20 21:56:38,920 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-07-20 21:56:38,920 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-07-20 21:56:38,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 21:56:38,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 21:56:38,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 21:56:38,921 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-07-20 21:56:38,921 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2020-07-20 21:56:38,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 21:56:38,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 21:56:38,922 INFO L130 BoogieDeclarations]: Found specification of procedure dll_get_data_at [2020-07-20 21:56:38,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 21:56:38,922 INFO L130 BoogieDeclarations]: Found specification of procedure dll_update_at [2020-07-20 21:56:38,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 21:56:38,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 21:56:38,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 21:56:39,516 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-07-20 21:56:39,789 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 21:56:39,790 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-20 21:56:39,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:56:39 BoogieIcfgContainer [2020-07-20 21:56:39,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 21:56:39,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 21:56:39,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 21:56:39,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 21:56:39,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:56:37" (1/3) ... [2020-07-20 21:56:39,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512c4920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:56:39, skipping insertion in model container [2020-07-20 21:56:39,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:56:38" (2/3) ... [2020-07-20 21:56:39,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512c4920 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:56:39, skipping insertion in model container [2020-07-20 21:56:39,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:56:39" (3/3) ... [2020-07-20 21:56:39,806 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_update_all_reverse.i [2020-07-20 21:56:39,817 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 21:56:39,830 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 21:56:39,844 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 21:56:39,869 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 21:56:39,869 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 21:56:39,869 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 21:56:39,870 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 21:56:39,870 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 21:56:39,870 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 21:56:39,870 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 21:56:39,870 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 21:56:39,890 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-07-20 21:56:39,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 21:56:39,897 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:56:39,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:56:39,899 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:56:39,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:56:39,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1303429635, now seen corresponding path program 1 times [2020-07-20 21:56:39,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:56:39,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136932894] [2020-07-20 21:56:39,920 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 [2020-07-20 21:56:40,137 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:56:40,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:56:40,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 21:56:40,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:56:40,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:56:40,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:56:40,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136932894] [2020-07-20 21:56:40,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:56:40,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 21:56:40,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777764347] [2020-07-20 21:56:40,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 21:56:40,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:56:40,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 21:56:40,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 21:56:40,279 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 5 states. [2020-07-20 21:56:40,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:56:40,409 INFO L93 Difference]: Finished difference Result 95 states and 126 transitions. [2020-07-20 21:56:40,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 21:56:40,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-07-20 21:56:40,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:56:40,424 INFO L225 Difference]: With dead ends: 95 [2020-07-20 21:56:40,425 INFO L226 Difference]: Without dead ends: 43 [2020-07-20 21:56:40,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 21:56:40,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-20 21:56:40,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-07-20 21:56:40,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-20 21:56:40,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-07-20 21:56:40,489 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 25 [2020-07-20 21:56:40,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:56:40,490 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-07-20 21:56:40,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 21:56:40,490 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-07-20 21:56:40,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 21:56:40,492 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:56:40,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:56:40,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:56:40,708 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:56:40,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:56:40,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1036290808, now seen corresponding path program 1 times [2020-07-20 21:56:40,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:56:40,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569825150] [2020-07-20 21:56:40,710 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 [2020-07-20 21:56:40,837 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 21:56:40,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:56:40,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 21:56:40,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:56:40,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:56:40,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:56:40,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569825150] [2020-07-20 21:56:40,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:56:40,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 21:56:40,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307272810] [2020-07-20 21:56:40,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 21:56:40,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:56:40,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 21:56:40,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:56:40,874 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 3 states. [2020-07-20 21:56:40,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:56:40,918 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2020-07-20 21:56:40,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 21:56:40,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-07-20 21:56:40,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:56:40,921 INFO L225 Difference]: With dead ends: 73 [2020-07-20 21:56:40,921 INFO L226 Difference]: Without dead ends: 43 [2020-07-20 21:56:40,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 21:56:40,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-20 21:56:40,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-07-20 21:56:40,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-20 21:56:40,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-07-20 21:56:40,932 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 30 [2020-07-20 21:56:40,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:56:40,932 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-07-20 21:56:40,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 21:56:40,933 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-07-20 21:56:40,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 21:56:40,934 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:56:40,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:56:41,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:56:41,148 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:56:41,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:56:41,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1569732746, now seen corresponding path program 1 times [2020-07-20 21:56:41,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:56:41,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142311562] [2020-07-20 21:56:41,151 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 [2020-07-20 21:56:41,298 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:56:41,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:56:41,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 21:56:41,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:56:41,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:56:41,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:56:41,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:56:41,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142311562] [2020-07-20 21:56:41,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:56:41,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-07-20 21:56:41,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158446420] [2020-07-20 21:56:41,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 21:56:41,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:56:41,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 21:56:41,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-07-20 21:56:41,461 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 8 states. [2020-07-20 21:56:41,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:56:41,529 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2020-07-20 21:56:41,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 21:56:41,530 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-07-20 21:56:41,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:56:41,532 INFO L225 Difference]: With dead ends: 73 [2020-07-20 21:56:41,532 INFO L226 Difference]: Without dead ends: 48 [2020-07-20 21:56:41,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-07-20 21:56:41,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-20 21:56:41,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-07-20 21:56:41,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 21:56:41,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-07-20 21:56:41,543 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 30 [2020-07-20 21:56:41,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:56:41,543 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-07-20 21:56:41,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 21:56:41,544 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-07-20 21:56:41,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-20 21:56:41,545 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:56:41,545 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:56:41,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:56:41,761 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:56:41,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:56:41,763 INFO L82 PathProgramCache]: Analyzing trace with hash 649760861, now seen corresponding path program 1 times [2020-07-20 21:56:41,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:56:41,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575185720] [2020-07-20 21:56:41,764 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:56:42,072 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:56:42,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:56:42,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 21:56:42,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:56:42,101 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-20 21:56:42,102 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:56:42,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575185720] [2020-07-20 21:56:42,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:56:42,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 21:56:42,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893785059] [2020-07-20 21:56:42,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 21:56:42,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:56:42,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 21:56:42,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 21:56:42,106 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 4 states. [2020-07-20 21:56:42,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:56:42,161 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2020-07-20 21:56:42,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 21:56:42,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-07-20 21:56:42,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:56:42,163 INFO L225 Difference]: With dead ends: 49 [2020-07-20 21:56:42,163 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 21:56:42,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 21:56:42,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 21:56:42,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 21:56:42,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 21:56:42,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 21:56:42,168 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-07-20 21:56:42,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:56:42,169 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 21:56:42,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 21:56:42,170 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 21:56:42,170 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 21:56:42,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:56:42,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 21:56:42,506 INFO L271 CegarLoopResult]: At program point L607-2(lines 607 610) the Hoare annotation is: true [2020-07-20 21:56:42,506 INFO L268 CegarLoopResult]: For program point L607-3(lines 607 610) no Hoare annotation was computed. [2020-07-20 21:56:42,506 INFO L271 CegarLoopResult]: At program point dll_update_atENTRY(lines 606 612) the Hoare annotation is: true [2020-07-20 21:56:42,506 INFO L268 CegarLoopResult]: For program point dll_update_atEXIT(lines 606 612) no Hoare annotation was computed. [2020-07-20 21:56:42,506 INFO L268 CegarLoopResult]: For program point dll_update_atFINAL(lines 606 612) no Hoare annotation was computed. [2020-07-20 21:56:42,507 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 21:56:42,507 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 21:56:42,507 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 21:56:42,507 INFO L271 CegarLoopResult]: At program point myexitENTRY(lines 561 563) the Hoare annotation is: true [2020-07-20 21:56:42,507 INFO L268 CegarLoopResult]: For program point myexitEXIT(lines 561 563) no Hoare annotation was computed. [2020-07-20 21:56:42,507 INFO L271 CegarLoopResult]: At program point L562(line 562) the Hoare annotation is: true [2020-07-20 21:56:42,507 INFO L268 CegarLoopResult]: For program point L578-1(lines 578 580) no Hoare annotation was computed. [2020-07-20 21:56:42,508 INFO L271 CegarLoopResult]: At program point dll_createENTRY(lines 574 591) the Hoare annotation is: true [2020-07-20 21:56:42,508 INFO L271 CegarLoopResult]: At program point L576-2(lines 576 589) the Hoare annotation is: true [2020-07-20 21:56:42,508 INFO L268 CegarLoopResult]: For program point L576-3(lines 576 589) no Hoare annotation was computed. [2020-07-20 21:56:42,508 INFO L268 CegarLoopResult]: For program point dll_createFINAL(lines 574 591) no Hoare annotation was computed. [2020-07-20 21:56:42,508 INFO L271 CegarLoopResult]: At program point L579(line 579) the Hoare annotation is: true [2020-07-20 21:56:42,508 INFO L268 CegarLoopResult]: For program point dll_createEXIT(lines 574 591) no Hoare annotation was computed. [2020-07-20 21:56:42,509 INFO L268 CegarLoopResult]: For program point L584(lines 584 586) no Hoare annotation was computed. [2020-07-20 21:56:42,509 INFO L268 CegarLoopResult]: For program point L584-2(lines 584 586) no Hoare annotation was computed. [2020-07-20 21:56:42,509 INFO L268 CegarLoopResult]: For program point L578(lines 578 580) no Hoare annotation was computed. [2020-07-20 21:56:42,509 INFO L268 CegarLoopResult]: For program point __bswap_32ENTRY(lines 63 67) no Hoare annotation was computed. [2020-07-20 21:56:42,509 INFO L268 CegarLoopResult]: For program point __bswap_32FINAL(lines 63 67) no Hoare annotation was computed. [2020-07-20 21:56:42,509 INFO L268 CegarLoopResult]: For program point __bswap_32EXIT(lines 63 67) no Hoare annotation was computed. [2020-07-20 21:56:42,509 INFO L268 CegarLoopResult]: For program point __bswap_64ENTRY(lines 68 72) no Hoare annotation was computed. [2020-07-20 21:56:42,510 INFO L268 CegarLoopResult]: For program point __bswap_64FINAL(lines 68 72) no Hoare annotation was computed. [2020-07-20 21:56:42,510 INFO L268 CegarLoopResult]: For program point __bswap_64EXIT(lines 68 72) no Hoare annotation was computed. [2020-07-20 21:56:42,510 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 21:56:42,510 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 21:56:42,510 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 21:56:42,510 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 21:56:42,510 INFO L271 CegarLoopResult]: At program point L600-2(lines 600 603) the Hoare annotation is: true [2020-07-20 21:56:42,511 INFO L268 CegarLoopResult]: For program point L600-3(lines 600 603) no Hoare annotation was computed. [2020-07-20 21:56:42,511 INFO L268 CegarLoopResult]: For program point dll_get_data_atFINAL(lines 599 605) no Hoare annotation was computed. [2020-07-20 21:56:42,511 INFO L271 CegarLoopResult]: At program point dll_get_data_atENTRY(lines 599 605) the Hoare annotation is: true [2020-07-20 21:56:42,511 INFO L268 CegarLoopResult]: For program point dll_get_data_atEXIT(lines 599 605) no Hoare annotation was computed. [2020-07-20 21:56:42,511 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 613 632) no Hoare annotation was computed. [2020-07-20 21:56:42,511 INFO L268 CegarLoopResult]: For program point L628(line 628) no Hoare annotation was computed. [2020-07-20 21:56:42,511 INFO L264 CegarLoopResult]: At program point L624(line 624) the Hoare annotation is: false [2020-07-20 21:56:42,512 INFO L268 CegarLoopResult]: For program point L624-1(line 624) no Hoare annotation was computed. [2020-07-20 21:56:42,512 INFO L268 CegarLoopResult]: For program point L624-2(lines 624 626) no Hoare annotation was computed. [2020-07-20 21:56:42,512 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 613 632) no Hoare annotation was computed. [2020-07-20 21:56:42,512 INFO L264 CegarLoopResult]: At program point L620(line 620) the Hoare annotation is: (<= 2 main_~len~0) [2020-07-20 21:56:42,512 INFO L268 CegarLoopResult]: For program point L622-2(lines 622 627) no Hoare annotation was computed. [2020-07-20 21:56:42,513 INFO L268 CegarLoopResult]: For program point L620-1(lines 618 621) no Hoare annotation was computed. [2020-07-20 21:56:42,513 INFO L264 CegarLoopResult]: At program point L622-3(lines 622 627) the Hoare annotation is: (and (<= 2 main_~len~0) (<= 1 main_~i~0)) [2020-07-20 21:56:42,513 INFO L264 CegarLoopResult]: At program point L622-4(lines 622 627) the Hoare annotation is: (<= 2 main_~len~0) [2020-07-20 21:56:42,513 INFO L264 CegarLoopResult]: At program point L616(line 616) the Hoare annotation is: (<= 2 main_~len~0) [2020-07-20 21:56:42,513 INFO L264 CegarLoopResult]: At program point L618-2(lines 618 621) the Hoare annotation is: (<= 2 main_~len~0) [2020-07-20 21:56:42,513 INFO L268 CegarLoopResult]: For program point L616-1(line 616) no Hoare annotation was computed. [2020-07-20 21:56:42,513 INFO L268 CegarLoopResult]: For program point L618-3(lines 618 621) no Hoare annotation was computed. [2020-07-20 21:56:42,514 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 630) no Hoare annotation was computed. [2020-07-20 21:56:42,514 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 613 632) the Hoare annotation is: true [2020-07-20 21:56:42,514 INFO L264 CegarLoopResult]: At program point L625(lines 613 632) the Hoare annotation is: false [2020-07-20 21:56:42,514 INFO L268 CegarLoopResult]: For program point dll_destroyEXIT(lines 592 598) no Hoare annotation was computed. [2020-07-20 21:56:42,515 INFO L271 CegarLoopResult]: At program point dll_destroyENTRY(lines 592 598) the Hoare annotation is: true [2020-07-20 21:56:42,515 INFO L271 CegarLoopResult]: At program point L593-2(lines 593 597) the Hoare annotation is: true [2020-07-20 21:56:42,515 INFO L268 CegarLoopResult]: For program point L593-3(lines 592 598) no Hoare annotation was computed. [2020-07-20 21:56:42,515 INFO L268 CegarLoopResult]: For program point node_createENTRY(lines 564 573) no Hoare annotation was computed. [2020-07-20 21:56:42,515 INFO L268 CegarLoopResult]: For program point node_createFINAL(lines 564 573) no Hoare annotation was computed. [2020-07-20 21:56:42,515 INFO L268 CegarLoopResult]: For program point L567(line 567) no Hoare annotation was computed. [2020-07-20 21:56:42,515 INFO L268 CegarLoopResult]: For program point L566(lines 566 568) no Hoare annotation was computed. [2020-07-20 21:56:42,516 INFO L268 CegarLoopResult]: For program point node_createEXIT(lines 564 573) no Hoare annotation was computed. [2020-07-20 21:56:42,516 INFO L268 CegarLoopResult]: For program point L566-1(lines 566 568) no Hoare annotation was computed. [2020-07-20 21:56:42,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 09:56:42 BoogieIcfgContainer [2020-07-20 21:56:42,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 21:56:42,539 INFO L168 Benchmark]: Toolchain (without parser) took 4529.96 ms. Allocated memory was 145.2 MB in the beginning and 249.0 MB in the end (delta: 103.8 MB). Free memory was 101.5 MB in the beginning and 174.2 MB in the end (delta: -72.8 MB). Peak memory consumption was 31.0 MB. Max. memory is 7.1 GB. [2020-07-20 21:56:42,540 INFO L168 Benchmark]: CDTParser took 0.65 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 21:56:42,541 INFO L168 Benchmark]: CACSL2BoogieTranslator took 722.52 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 101.2 MB in the beginning and 168.3 MB in the end (delta: -67.1 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-07-20 21:56:42,542 INFO L168 Benchmark]: Boogie Preprocessor took 78.10 ms. Allocated memory is still 203.4 MB. Free memory was 168.3 MB in the beginning and 164.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-07-20 21:56:42,543 INFO L168 Benchmark]: RCFGBuilder took 983.12 ms. Allocated memory is still 203.4 MB. Free memory was 164.9 MB in the beginning and 115.6 MB in the end (delta: 49.3 MB). Peak memory consumption was 49.3 MB. Max. memory is 7.1 GB. [2020-07-20 21:56:42,544 INFO L168 Benchmark]: TraceAbstraction took 2738.76 ms. Allocated memory was 203.4 MB in the beginning and 249.0 MB in the end (delta: 45.6 MB). Free memory was 115.6 MB in the beginning and 174.2 MB in the end (delta: -58.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 21:56:42,548 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 722.52 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 101.2 MB in the beginning and 168.3 MB in the end (delta: -67.1 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.10 ms. Allocated memory is still 203.4 MB. Free memory was 168.3 MB in the beginning and 164.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 983.12 ms. Allocated memory is still 203.4 MB. Free memory was 164.9 MB in the beginning and 115.6 MB in the end (delta: 49.3 MB). Peak memory consumption was 49.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2738.76 ms. Allocated memory was 203.4 MB in the beginning and 249.0 MB in the end (delta: 45.6 MB). Free memory was 115.6 MB in the beginning and 174.2 MB in the end (delta: -58.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 630]: 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 - InvariantResult [Line: 562]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 618]: Loop Invariant Derived loop invariant: 2 <= len - InvariantResult [Line: 607]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 600]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 613]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 576]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 622]: Loop Invariant Derived loop invariant: 2 <= len && 1 <= i - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 155 SDtfs, 60 SDslu, 347 SDs, 0 SdLazy, 75 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 131 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 40 PreInvPairs, 50 NumberOfFragments, 36 HoareAnnotationTreeSize, 40 FomulaSimplifications, 16 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 22 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 120 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 7309 SizeOfPredicates, 8 NumberOfNonLiveVariables, 384 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 8/10 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...