./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/forester-heap/dll-optional-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/forester-heap/dll-optional-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6b441a4213b4a827a391c87a88efb5ed98112599 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 04:26:11,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 04:26:11,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 04:26:11,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 04:26:11,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 04:26:11,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 04:26:11,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 04:26:11,032 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 04:26:11,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 04:26:11,035 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 04:26:11,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 04:26:11,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 04:26:11,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 04:26:11,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 04:26:11,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 04:26:11,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 04:26:11,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 04:26:11,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 04:26:11,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 04:26:11,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 04:26:11,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 04:26:11,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 04:26:11,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 04:26:11,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 04:26:11,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 04:26:11,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 04:26:11,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 04:26:11,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 04:26:11,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 04:26:11,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 04:26:11,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 04:26:11,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 04:26:11,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 04:26:11,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 04:26:11,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 04:26:11,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 04:26:11,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 04:26:11,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 04:26:11,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 04:26:11,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 04:26:11,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 04:26:11,084 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-08-27 04:26:11,112 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 04:26:11,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 04:26:11,113 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 04:26:11,113 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 04:26:11,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 04:26:11,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 04:26:11,114 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 04:26:11,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 04:26:11,115 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 04:26:11,115 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 04:26:11,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 04:26:11,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 04:26:11,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 04:26:11,116 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 04:26:11,116 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 04:26:11,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 04:26:11,116 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 04:26:11,116 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 04:26:11,117 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 04:26:11,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 04:26:11,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 04:26:11,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 04:26:11,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:26:11,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 04:26:11,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 04:26:11,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 04:26:11,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 04:26:11,118 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 04:26:11,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b441a4213b4a827a391c87a88efb5ed98112599 [2021-08-27 04:26:11,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 04:26:11,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 04:26:11,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 04:26:11,390 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 04:26:11,390 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 04:26:11,391 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-optional-2.i [2021-08-27 04:26:11,435 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d621a43e0/c7e9eed77d4a4b7ba11f027043e8a031/FLAG0bab2ee56 [2021-08-27 04:26:11,888 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 04:26:11,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-optional-2.i [2021-08-27 04:26:11,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d621a43e0/c7e9eed77d4a4b7ba11f027043e8a031/FLAG0bab2ee56 [2021-08-27 04:26:12,272 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d621a43e0/c7e9eed77d4a4b7ba11f027043e8a031 [2021-08-27 04:26:12,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 04:26:12,275 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 04:26:12,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 04:26:12,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 04:26:12,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 04:26:12,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:26:12" (1/1) ... [2021-08-27 04:26:12,282 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eea5aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:12, skipping insertion in model container [2021-08-27 04:26:12,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:26:12" (1/1) ... [2021-08-27 04:26:12,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 04:26:12,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 04:26:12,461 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-optional-2.i[22706,22719] [2021-08-27 04:26:12,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:26:12,484 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 04:26:12,529 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-optional-2.i[22706,22719] [2021-08-27 04:26:12,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 04:26:12,562 INFO L208 MainTranslator]: Completed translation [2021-08-27 04:26:12,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:12 WrapperNode [2021-08-27 04:26:12,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 04:26:12,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 04:26:12,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 04:26:12,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 04:26:12,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:12" (1/1) ... [2021-08-27 04:26:12,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:12" (1/1) ... [2021-08-27 04:26:12,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:12" (1/1) ... [2021-08-27 04:26:12,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:12" (1/1) ... [2021-08-27 04:26:12,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:12" (1/1) ... [2021-08-27 04:26:12,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:12" (1/1) ... [2021-08-27 04:26:12,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:12" (1/1) ... [2021-08-27 04:26:12,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 04:26:12,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 04:26:12,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 04:26:12,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 04:26:12,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:12" (1/1) ... [2021-08-27 04:26:12,647 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 04:26:12,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 04:26:12,674 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 04:26:12,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 04:26:12,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 04:26:12,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 04:26:12,707 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-27 04:26:12,707 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 04:26:12,708 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 04:26:12,708 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 04:26:12,708 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 04:26:12,708 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 04:26:12,709 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 04:26:12,709 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 04:26:12,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 04:26:12,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 04:26:12,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 04:26:12,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 04:26:12,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 04:26:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 04:26:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 04:26:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 04:26:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 04:26:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 04:26:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 04:26:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 04:26:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 04:26:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 04:26:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 04:26:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 04:26:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 04:26:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 04:26:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 04:26:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 04:26:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 04:26:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 04:26:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 04:26:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 04:26:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 04:26:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 04:26:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 04:26:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 04:26:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 04:26:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 04:26:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 04:26:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 04:26:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 04:26:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 04:26:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 04:26:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 04:26:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 04:26:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 04:26:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 04:26:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 04:26:12,716 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 04:26:12,716 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 04:26:12,716 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 04:26:12,716 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 04:26:12,716 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 04:26:12,717 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 04:26:12,717 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 04:26:12,717 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 04:26:12,717 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-08-27 04:26:12,717 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 04:26:12,717 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 04:26:12,717 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 04:26:12,717 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 04:26:12,717 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 04:26:12,718 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 04:26:12,718 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 04:26:12,718 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 04:26:12,719 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 04:26:12,719 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 04:26:12,719 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 04:26:12,719 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 04:26:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 04:26:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 04:26:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 04:26:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 04:26:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 04:26:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 04:26:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 04:26:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 04:26:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 04:26:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 04:26:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 04:26:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 04:26:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 04:26:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 04:26:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 04:26:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 04:26:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 04:26:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 04:26:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 04:26:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 04:26:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 04:26:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 04:26:12,723 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 04:26:12,723 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 04:26:12,723 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 04:26:12,723 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 04:26:12,723 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 04:26:12,723 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 04:26:12,723 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 04:26:12,723 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 04:26:12,723 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 04:26:12,724 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 04:26:12,724 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 04:26:12,724 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 04:26:12,724 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 04:26:12,724 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 04:26:12,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 04:26:12,725 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-27 04:26:12,725 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-27 04:26:12,725 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-27 04:26:12,725 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-27 04:26:12,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 04:26:12,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 04:26:12,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 04:26:12,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 04:26:12,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 04:26:12,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 04:26:12,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 04:26:12,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 04:26:12,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 04:26:12,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 04:26:12,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 04:26:13,270 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 04:26:13,270 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-27 04:26:13,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:13 BoogieIcfgContainer [2021-08-27 04:26:13,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 04:26:13,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 04:26:13,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 04:26:13,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 04:26:13,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 04:26:12" (1/3) ... [2021-08-27 04:26:13,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac24aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:26:13, skipping insertion in model container [2021-08-27 04:26:13,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:26:12" (2/3) ... [2021-08-27 04:26:13,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac24aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:26:13, skipping insertion in model container [2021-08-27 04:26:13,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:13" (3/3) ... [2021-08-27 04:26:13,277 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-optional-2.i [2021-08-27 04:26:13,280 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 04:26:13,281 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 66 error locations. [2021-08-27 04:26:13,305 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 04:26:13,310 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 04:26:13,310 INFO L340 AbstractCegarLoop]: Starting to check reachability of 66 error locations. [2021-08-27 04:26:13,320 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 72 states have (on average 2.125) internal successors, (153), 138 states have internal predecessors, (153), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 04:26:13,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 04:26:13,325 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:13,325 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:13,325 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-08-27 04:26:13,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:13,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1414783073, now seen corresponding path program 1 times [2021-08-27 04:26:13,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:13,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324260690] [2021-08-27 04:26:13,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:13,335 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:13,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:13,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:13,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:13,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324260690] [2021-08-27 04:26:13,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324260690] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:13,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:13,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 04:26:13,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082767002] [2021-08-27 04:26:13,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 04:26:13,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:13,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 04:26:13,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 04:26:13,553 INFO L87 Difference]: Start difference. First operand has 143 states, 72 states have (on average 2.125) internal successors, (153), 138 states have internal predecessors, (153), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:13,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:13,902 INFO L93 Difference]: Finished difference Result 143 states and 152 transitions. [2021-08-27 04:26:13,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 04:26:13,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-27 04:26:13,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:13,909 INFO L225 Difference]: With dead ends: 143 [2021-08-27 04:26:13,910 INFO L226 Difference]: Without dead ends: 139 [2021-08-27 04:26:13,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.2ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 04:26:13,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-08-27 04:26:13,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 133. [2021-08-27 04:26:13,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 74 states have (on average 1.8918918918918919) internal successors, (140), 129 states have internal predecessors, (140), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:13,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 143 transitions. [2021-08-27 04:26:13,935 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 143 transitions. Word has length 7 [2021-08-27 04:26:13,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:13,936 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 143 transitions. [2021-08-27 04:26:13,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:13,936 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 143 transitions. [2021-08-27 04:26:13,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-27 04:26:13,936 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:13,937 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:13,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 04:26:13,937 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-08-27 04:26:13,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:13,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1414783074, now seen corresponding path program 1 times [2021-08-27 04:26:13,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:13,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988118456] [2021-08-27 04:26:13,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:13,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:13,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:14,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:14,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:14,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988118456] [2021-08-27 04:26:14,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988118456] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:14,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:14,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 04:26:14,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082911484] [2021-08-27 04:26:14,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 04:26:14,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:14,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 04:26:14,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 04:26:14,003 INFO L87 Difference]: Start difference. First operand 133 states and 143 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:14,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:14,243 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2021-08-27 04:26:14,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 04:26:14,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-08-27 04:26:14,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:14,244 INFO L225 Difference]: With dead ends: 128 [2021-08-27 04:26:14,244 INFO L226 Difference]: Without dead ends: 128 [2021-08-27 04:26:14,245 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.7ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 04:26:14,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-08-27 04:26:14,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2021-08-27 04:26:14,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 74 states have (on average 1.7702702702702702) internal successors, (131), 120 states have internal predecessors, (131), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:14,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2021-08-27 04:26:14,250 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 7 [2021-08-27 04:26:14,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:14,251 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2021-08-27 04:26:14,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:14,251 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2021-08-27 04:26:14,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-27 04:26:14,251 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:14,251 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:14,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 04:26:14,252 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr10REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-08-27 04:26:14,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:14,252 INFO L82 PathProgramCache]: Analyzing trace with hash -844776134, now seen corresponding path program 1 times [2021-08-27 04:26:14,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:14,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205231387] [2021-08-27 04:26:14,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:14,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:14,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:14,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:14,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:14,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205231387] [2021-08-27 04:26:14,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205231387] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:14,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:14,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 04:26:14,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970960515] [2021-08-27 04:26:14,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 04:26:14,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:14,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 04:26:14,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:26:14,336 INFO L87 Difference]: Start difference. First operand 124 states and 134 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:14,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:14,561 INFO L93 Difference]: Finished difference Result 153 states and 166 transitions. [2021-08-27 04:26:14,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 04:26:14,561 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-08-27 04:26:14,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:14,562 INFO L225 Difference]: With dead ends: 153 [2021-08-27 04:26:14,562 INFO L226 Difference]: Without dead ends: 153 [2021-08-27 04:26:14,563 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 40.0ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 04:26:14,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-08-27 04:26:14,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 123. [2021-08-27 04:26:14,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 74 states have (on average 1.7567567567567568) internal successors, (130), 119 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:14,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2021-08-27 04:26:14,567 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 16 [2021-08-27 04:26:14,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:14,567 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2021-08-27 04:26:14,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:14,568 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2021-08-27 04:26:14,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-27 04:26:14,568 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:14,568 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:14,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-27 04:26:14,569 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-08-27 04:26:14,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:14,569 INFO L82 PathProgramCache]: Analyzing trace with hash -844776133, now seen corresponding path program 1 times [2021-08-27 04:26:14,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:14,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369180333] [2021-08-27 04:26:14,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:14,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:14,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:14,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:14,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:14,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369180333] [2021-08-27 04:26:14,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369180333] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:14,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:14,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 04:26:14,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134386994] [2021-08-27 04:26:14,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 04:26:14,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:14,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 04:26:14,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:26:14,654 INFO L87 Difference]: Start difference. First operand 123 states and 133 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:14,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:14,892 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2021-08-27 04:26:14,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 04:26:14,892 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-08-27 04:26:14,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:14,893 INFO L225 Difference]: With dead ends: 122 [2021-08-27 04:26:14,893 INFO L226 Difference]: Without dead ends: 122 [2021-08-27 04:26:14,893 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 50.8ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 04:26:14,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-08-27 04:26:14,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-08-27 04:26:14,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 74 states have (on average 1.7432432432432432) internal successors, (129), 118 states have internal predecessors, (129), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:14,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2021-08-27 04:26:14,897 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 16 [2021-08-27 04:26:14,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:14,897 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2021-08-27 04:26:14,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:14,898 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2021-08-27 04:26:14,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 04:26:14,898 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:14,898 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:14,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 04:26:14,899 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr20REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-08-27 04:26:14,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:14,899 INFO L82 PathProgramCache]: Analyzing trace with hash -667442544, now seen corresponding path program 1 times [2021-08-27 04:26:14,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:14,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226474571] [2021-08-27 04:26:14,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:14,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:14,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:14,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:14,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:14,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:14,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226474571] [2021-08-27 04:26:14,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226474571] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:14,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:14,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 04:26:14,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324756467] [2021-08-27 04:26:14,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 04:26:14,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:14,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 04:26:14,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:26:14,958 INFO L87 Difference]: Start difference. First operand 122 states and 132 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:15,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:15,151 INFO L93 Difference]: Finished difference Result 125 states and 134 transitions. [2021-08-27 04:26:15,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 04:26:15,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-08-27 04:26:15,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:15,152 INFO L225 Difference]: With dead ends: 125 [2021-08-27 04:26:15,152 INFO L226 Difference]: Without dead ends: 125 [2021-08-27 04:26:15,152 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:26:15,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-08-27 04:26:15,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 116. [2021-08-27 04:26:15,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 80 states have (on average 1.6) internal successors, (128), 112 states have internal predecessors, (128), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:15,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 131 transitions. [2021-08-27 04:26:15,156 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 131 transitions. Word has length 17 [2021-08-27 04:26:15,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:15,157 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 131 transitions. [2021-08-27 04:26:15,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:15,157 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 131 transitions. [2021-08-27 04:26:15,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 04:26:15,157 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:15,158 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:15,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 04:26:15,158 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr21REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-08-27 04:26:15,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:15,158 INFO L82 PathProgramCache]: Analyzing trace with hash -667442543, now seen corresponding path program 1 times [2021-08-27 04:26:15,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:15,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673256962] [2021-08-27 04:26:15,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:15,159 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:15,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:15,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:15,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:15,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673256962] [2021-08-27 04:26:15,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673256962] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:15,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:15,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 04:26:15,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504084972] [2021-08-27 04:26:15,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 04:26:15,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:15,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 04:26:15,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:26:15,217 INFO L87 Difference]: Start difference. First operand 116 states and 131 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:15,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:15,469 INFO L93 Difference]: Finished difference Result 142 states and 156 transitions. [2021-08-27 04:26:15,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 04:26:15,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-08-27 04:26:15,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:15,493 INFO L225 Difference]: With dead ends: 142 [2021-08-27 04:26:15,493 INFO L226 Difference]: Without dead ends: 142 [2021-08-27 04:26:15,493 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:26:15,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-08-27 04:26:15,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 131. [2021-08-27 04:26:15,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 95 states have (on average 1.5368421052631578) internal successors, (146), 127 states have internal predecessors, (146), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:15,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 149 transitions. [2021-08-27 04:26:15,497 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 149 transitions. Word has length 17 [2021-08-27 04:26:15,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:15,497 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 149 transitions. [2021-08-27 04:26:15,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:15,497 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 149 transitions. [2021-08-27 04:26:15,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-27 04:26:15,498 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:15,498 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:15,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-27 04:26:15,498 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr24REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-08-27 04:26:15,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:15,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1917790938, now seen corresponding path program 1 times [2021-08-27 04:26:15,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:15,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723862775] [2021-08-27 04:26:15,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:15,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:15,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:15,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:15,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:15,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723862775] [2021-08-27 04:26:15,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723862775] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:15,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:15,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 04:26:15,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708351195] [2021-08-27 04:26:15,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 04:26:15,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:15,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 04:26:15,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:26:15,553 INFO L87 Difference]: Start difference. First operand 131 states and 149 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:15,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:15,759 INFO L93 Difference]: Finished difference Result 130 states and 147 transitions. [2021-08-27 04:26:15,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 04:26:15,759 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-08-27 04:26:15,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:15,760 INFO L225 Difference]: With dead ends: 130 [2021-08-27 04:26:15,760 INFO L226 Difference]: Without dead ends: 130 [2021-08-27 04:26:15,761 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 31.9ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 04:26:15,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-08-27 04:26:15,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-08-27 04:26:15,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 95 states have (on average 1.5157894736842106) internal successors, (144), 126 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:15,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 147 transitions. [2021-08-27 04:26:15,766 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 147 transitions. Word has length 20 [2021-08-27 04:26:15,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:15,767 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 147 transitions. [2021-08-27 04:26:15,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:15,767 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 147 transitions. [2021-08-27 04:26:15,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-27 04:26:15,767 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:15,767 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 04:26:15,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-27 04:26:15,768 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr25REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-08-27 04:26:15,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:15,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1917790939, now seen corresponding path program 1 times [2021-08-27 04:26:15,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:15,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323871159] [2021-08-27 04:26:15,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:15,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:15,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:15,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:15,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:15,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323871159] [2021-08-27 04:26:15,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323871159] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:15,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:15,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 04:26:15,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713245141] [2021-08-27 04:26:15,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 04:26:15,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:15,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 04:26:15,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 04:26:15,836 INFO L87 Difference]: Start difference. First operand 130 states and 147 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:16,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:16,045 INFO L93 Difference]: Finished difference Result 129 states and 145 transitions. [2021-08-27 04:26:16,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-27 04:26:16,045 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-08-27 04:26:16,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:16,046 INFO L225 Difference]: With dead ends: 129 [2021-08-27 04:26:16,046 INFO L226 Difference]: Without dead ends: 129 [2021-08-27 04:26:16,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 39.9ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 04:26:16,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-08-27 04:26:16,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-08-27 04:26:16,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 95 states have (on average 1.4947368421052631) internal successors, (142), 125 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:16,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 145 transitions. [2021-08-27 04:26:16,049 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 145 transitions. Word has length 20 [2021-08-27 04:26:16,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:16,049 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 145 transitions. [2021-08-27 04:26:16,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:16,049 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 145 transitions. [2021-08-27 04:26:16,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-27 04:26:16,050 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:16,050 INFO L512 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] [2021-08-27 04:26:16,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-27 04:26:16,050 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr65ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-08-27 04:26:16,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:16,051 INFO L82 PathProgramCache]: Analyzing trace with hash 461207233, now seen corresponding path program 1 times [2021-08-27 04:26:16,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:16,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125788180] [2021-08-27 04:26:16,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:16,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:16,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-27 04:26:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 04:26:16,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 04:26:16,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 04:26:16,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125788180] [2021-08-27 04:26:16,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125788180] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 04:26:16,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 04:26:16,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 04:26:16,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344463166] [2021-08-27 04:26:16,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 04:26:16,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 04:26:16,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 04:26:16,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:26:16,092 INFO L87 Difference]: Start difference. First operand 129 states and 145 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:16,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 04:26:16,242 INFO L93 Difference]: Finished difference Result 156 states and 172 transitions. [2021-08-27 04:26:16,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 04:26:16,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-08-27 04:26:16,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 04:26:16,243 INFO L225 Difference]: With dead ends: 156 [2021-08-27 04:26:16,243 INFO L226 Difference]: Without dead ends: 156 [2021-08-27 04:26:16,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.4ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 04:26:16,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-08-27 04:26:16,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 129. [2021-08-27 04:26:16,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 95 states have (on average 1.4736842105263157) internal successors, (140), 125 states have internal predecessors, (140), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:16,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 143 transitions. [2021-08-27 04:26:16,246 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 143 transitions. Word has length 22 [2021-08-27 04:26:16,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 04:26:16,247 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 143 transitions. [2021-08-27 04:26:16,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 04:26:16,247 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 143 transitions. [2021-08-27 04:26:16,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-27 04:26:16,247 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 04:26:16,247 INFO L512 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] [2021-08-27 04:26:16,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-27 04:26:16,248 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr50ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-08-27 04:26:16,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 04:26:16,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1435277979, now seen corresponding path program 1 times [2021-08-27 04:26:16,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 04:26:16,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628437970] [2021-08-27 04:26:16,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 04:26:16,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 04:26:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 04:26:16,258 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 04:26:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 04:26:16,278 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 04:26:16,278 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-27 04:26:16,279 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr50ASSERT_VIOLATIONMEMORY_LEAK [2021-08-27 04:26:16,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-08-27 04:26:16,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-08-27 04:26:16,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-08-27 04:26:16,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-08-27 04:26:16,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-08-27 04:26:16,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-08-27 04:26:16,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-08-27 04:26:16,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-08-27 04:26:16,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-08-27 04:26:16,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-08-27 04:26:16,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-08-27 04:26:16,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-08-27 04:26:16,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-08-27 04:26:16,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-08-27 04:26:16,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-08-27 04:26:16,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-08-27 04:26:16,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-08-27 04:26:16,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-08-27 04:26:16,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-08-27 04:26:16,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-08-27 04:26:16,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-08-27 04:26:16,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-08-27 04:26:16,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-08-27 04:26:16,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-08-27 04:26:16,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-08-27 04:26:16,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-08-27 04:26:16,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-08-27 04:26:16,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-08-27 04:26:16,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-08-27 04:26:16,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-08-27 04:26:16,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-08-27 04:26:16,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-08-27 04:26:16,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION [2021-08-27 04:26:16,284 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-08-27 04:26:16,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34REQUIRES_VIOLATION [2021-08-27 04:26:16,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION [2021-08-27 04:26:16,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-08-27 04:26:16,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-08-27 04:26:16,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-08-27 04:26:16,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-08-27 04:26:16,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION [2021-08-27 04:26:16,285 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41REQUIRES_VIOLATION [2021-08-27 04:26:16,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42REQUIRES_VIOLATION [2021-08-27 04:26:16,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43REQUIRES_VIOLATION [2021-08-27 04:26:16,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44REQUIRES_VIOLATION [2021-08-27 04:26:16,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-08-27 04:26:16,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46REQUIRES_VIOLATION [2021-08-27 04:26:16,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47REQUIRES_VIOLATION [2021-08-27 04:26:16,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48REQUIRES_VIOLATION [2021-08-27 04:26:16,286 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-08-27 04:26:16,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51REQUIRES_VIOLATION [2021-08-27 04:26:16,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52REQUIRES_VIOLATION [2021-08-27 04:26:16,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53REQUIRES_VIOLATION [2021-08-27 04:26:16,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54REQUIRES_VIOLATION [2021-08-27 04:26:16,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr55REQUIRES_VIOLATION [2021-08-27 04:26:16,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr56REQUIRES_VIOLATION [2021-08-27 04:26:16,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr57REQUIRES_VIOLATION [2021-08-27 04:26:16,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr58REQUIRES_VIOLATION [2021-08-27 04:26:16,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr59ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 04:26:16,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr60ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 04:26:16,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr61ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 04:26:16,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr62ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 04:26:16,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr63ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 04:26:16,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr64ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 04:26:16,289 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr65ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 04:26:16,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-27 04:26:16,293 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 04:26:16,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 04:26:16 BoogieIcfgContainer [2021-08-27 04:26:16,307 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 04:26:16,308 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 04:26:16,308 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 04:26:16,308 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 04:26:16,308 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:26:13" (3/4) ... [2021-08-27 04:26:16,309 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-27 04:26:16,329 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 04:26:16,329 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 04:26:16,330 INFO L168 Benchmark]: Toolchain (without parser) took 4055.08 ms. Allocated memory was 56.6 MB in the beginning and 121.6 MB in the end (delta: 65.0 MB). Free memory was 35.7 MB in the beginning and 54.3 MB in the end (delta: -18.6 MB). Peak memory consumption was 49.1 MB. Max. memory is 16.1 GB. [2021-08-27 04:26:16,331 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 56.6 MB. Free memory was 38.4 MB in the beginning and 38.3 MB in the end (delta: 84.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 04:26:16,331 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.99 ms. Allocated memory is still 56.6 MB. Free memory was 35.5 MB in the beginning and 37.3 MB in the end (delta: -1.8 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2021-08-27 04:26:16,331 INFO L168 Benchmark]: Boogie Preprocessor took 73.23 ms. Allocated memory is still 56.6 MB. Free memory was 37.3 MB in the beginning and 34.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 04:26:16,331 INFO L168 Benchmark]: RCFGBuilder took 635.10 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.4 MB in the beginning and 37.8 MB in the end (delta: -3.4 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2021-08-27 04:26:16,332 INFO L168 Benchmark]: TraceAbstraction took 3034.48 ms. Allocated memory was 69.2 MB in the beginning and 121.6 MB in the end (delta: 52.4 MB). Free memory was 37.5 MB in the beginning and 56.4 MB in the end (delta: -19.0 MB). Peak memory consumption was 32.8 MB. Max. memory is 16.1 GB. [2021-08-27 04:26:16,332 INFO L168 Benchmark]: Witness Printer took 21.71 ms. Allocated memory is still 121.6 MB. Free memory was 56.4 MB in the beginning and 54.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 04:26:16,333 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 56.6 MB. Free memory was 38.4 MB in the beginning and 38.3 MB in the end (delta: 84.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 286.99 ms. Allocated memory is still 56.6 MB. Free memory was 35.5 MB in the beginning and 37.3 MB in the end (delta: -1.8 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.23 ms. Allocated memory is still 56.6 MB. Free memory was 37.3 MB in the beginning and 34.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 635.10 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.4 MB in the beginning and 37.8 MB in the end (delta: -3.4 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3034.48 ms. Allocated memory was 69.2 MB in the beginning and 121.6 MB in the end (delta: 52.4 MB). Free memory was 37.5 MB in the beginning and 56.4 MB in the end (delta: -19.0 MB). Peak memory consumption was 32.8 MB. Max. memory is 16.1 GB. * Witness Printer took 21.71 ms. Allocated memory is still 121.6 MB. Free memory was 56.4 MB in the beginning and 54.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1009]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = ((void*)0) VAL [head={-1:0}] [L999] head->prev = ((void*)0) VAL [head={-1:0}] [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1000] COND TRUE __VERIFIER_nondet_int() [L1000] head->data = 1 VAL [head={-1:0}] [L1000] head->opt = head VAL [head={-1:0}] [L1001] SLL* x = head; VAL [head={-1:0}, x={-1:0}] [L1003] COND FALSE !(__VERIFIER_nondet_int()) [L1006] x = head VAL [head={-1:0}, x={-1:0}] [L1007] COND TRUE x != ((void*)0) VAL [head={-1:0}, x={-1:0}] [L1009] EXPR x->data VAL [head={-1:0}, x={-1:0}, x->data=1] [L1009] EXPR x->data == 2 && x->opt == x VAL [head={-1:0}, x={-1:0}, x->data=1, x->data == 2 && x->opt == x=0] [L1009] COND TRUE !(x->data == 2 && x->opt == x) [L1009] reach_error() VAL [head={-1:0}, x={-1:0}] - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 999]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 999]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1009]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1009]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1009]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1009]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1010]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1010]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 994]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 146 locations, 66 error locations. Started 1 CEGAR loops. OverallTime: 2987.0ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 11.0ms, AutomataDifference: 2124.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 778 SDtfs, 658 SDslu, 948 SDs, 0 SdLazy, 2272 SolverSat, 94 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1448.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 285.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=143occurred in iteration=0, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 46.4ms AutomataMinimizationTime, 9 MinimizatonAttempts, 87 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 21.9ms SsaConstructionTime, 80.5ms SatisfiabilityAnalysisTime, 522.0ms InterpolantComputationTime, 165 NumberOfCodeBlocks, 165 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 133 ConstructedInterpolants, 0 QuantifiedInterpolants, 689 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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 incorrect! [2021-08-27 04:26:16,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...