./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5fbdf5bf 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-rb-cnstr_1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79a0f3fe2cfdc34f95f5ad882c4d01fe846ad912 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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-rb-cnstr_1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79a0f3fe2cfdc34f95f5ad882c4d01fe846ad912 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Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 18:00:54,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 18:00:54,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 18:00:54,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 18:00:54,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 18:00:54,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 18:00:54,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 18:00:54,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 18:00:54,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 18:00:54,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 18:00:54,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 18:00:54,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 18:00:54,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 18:00:54,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 18:00:54,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 18:00:54,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 18:00:54,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 18:00:54,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 18:00:54,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 18:00:54,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 18:00:54,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 18:00:54,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 18:00:54,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 18:00:54,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 18:00:54,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 18:00:54,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 18:00:54,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 18:00:54,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 18:00:54,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 18:00:54,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 18:00:54,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 18:00:54,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 18:00:54,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 18:00:54,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 18:00:54,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 18:00:54,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 18:00:54,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 18:00:54,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 18:00:54,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 18:00:54,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 18:00:54,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 18:00:54,642 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 18:00:54,665 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 18:00:54,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 18:00:54,665 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 18:00:54,666 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 18:00:54,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 18:00:54,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 18:00:54,668 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 18:00:54,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 18:00:54,668 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 18:00:54,668 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 18:00:54,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 18:00:54,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 18:00:54,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 18:00:54,669 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 18:00:54,669 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 18:00:54,669 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 18:00:54,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 18:00:54,670 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 18:00:54,670 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 18:00:54,670 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 18:00:54,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 18:00:54,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 18:00:54,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 18:00:54,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 18:00:54,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 18:00:54,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 18:00:54,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 18:00:54,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 18:00:54,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 18:00:54,671 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79a0f3fe2cfdc34f95f5ad882c4d01fe846ad912 [2021-08-30 18:00:54,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 18:00:54,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 18:00:54,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 18:00:54,929 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 18:00:54,929 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 18:00:54,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2021-08-30 18:00:54,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99878ab82/84be4cdba28f41f8b361649231e0f8ed/FLAGcb4677c04 [2021-08-30 18:00:55,391 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 18:00:55,391 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2021-08-30 18:00:55,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99878ab82/84be4cdba28f41f8b361649231e0f8ed/FLAGcb4677c04 [2021-08-30 18:00:55,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99878ab82/84be4cdba28f41f8b361649231e0f8ed [2021-08-30 18:00:55,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 18:00:55,415 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 18:00:55,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 18:00:55,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 18:00:55,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 18:00:55,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:00:55" (1/1) ... [2021-08-30 18:00:55,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23edbe62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:00:55, skipping insertion in model container [2021-08-30 18:00:55,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:00:55" (1/1) ... [2021-08-30 18:00:55,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 18:00:55,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 18:00:55,697 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-rb-cnstr_1-2.i[22575,22588] [2021-08-30 18:00:55,699 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-rb-cnstr_1-2.i[22647,22660] [2021-08-30 18:00:55,700 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-rb-cnstr_1-2.i[22815,22828] [2021-08-30 18:00:55,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 18:00:55,709 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 18:00:55,731 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-rb-cnstr_1-2.i[22575,22588] [2021-08-30 18:00:55,732 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-rb-cnstr_1-2.i[22647,22660] [2021-08-30 18:00:55,733 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-rb-cnstr_1-2.i[22815,22828] [2021-08-30 18:00:55,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 18:00:55,752 INFO L208 MainTranslator]: Completed translation [2021-08-30 18:00:55,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:00:55 WrapperNode [2021-08-30 18:00:55,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 18:00:55,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 18:00:55,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 18:00:55,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 18:00:55,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:00:55" (1/1) ... [2021-08-30 18:00:55,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:00:55" (1/1) ... [2021-08-30 18:00:55,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:00:55" (1/1) ... [2021-08-30 18:00:55,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:00:55" (1/1) ... [2021-08-30 18:00:55,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:00:55" (1/1) ... [2021-08-30 18:00:55,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:00:55" (1/1) ... [2021-08-30 18:00:55,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:00:55" (1/1) ... [2021-08-30 18:00:55,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 18:00:55,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 18:00:55,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 18:00:55,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 18:00:55,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:00:55" (1/1) ... [2021-08-30 18:00:55,823 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 18:00:55,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 18:00:55,841 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) [2021-08-30 18:00:55,864 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 [2021-08-30 18:00:55,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 18:00:55,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 18:00:55,888 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 18:00:55,888 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 18:00:55,888 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 18:00:55,889 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 18:00:55,889 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 18:00:55,889 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 18:00:55,889 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 18:00:55,890 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 18:00:55,890 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 18:00:55,890 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 18:00:55,890 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 18:00:55,890 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 18:00:55,890 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 18:00:55,890 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 18:00:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 18:00:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 18:00:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 18:00:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 18:00:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 18:00:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 18:00:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 18:00:55,891 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 18:00:55,892 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 18:00:55,892 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 18:00:55,892 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 18:00:55,892 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 18:00:55,892 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 18:00:55,892 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 18:00:55,892 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 18:00:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 18:00:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 18:00:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 18:00:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 18:00:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 18:00:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 18:00:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 18:00:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 18:00:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 18:00:55,894 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 18:00:55,894 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 18:00:55,894 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 18:00:55,894 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 18:00:55,894 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 18:00:55,894 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 18:00:55,894 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 18:00:55,894 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 18:00:55,895 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 18:00:55,895 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 18:00:55,895 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 18:00:55,895 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 18:00:55,895 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 18:00:55,895 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 18:00:55,895 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 18:00:55,895 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 18:00:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 18:00:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 18:00:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-08-30 18:00:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 18:00:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 18:00:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 18:00:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 18:00:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 18:00:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 18:00:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 18:00:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 18:00:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 18:00:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 18:00:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 18:00:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 18:00:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 18:00:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 18:00:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 18:00:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 18:00:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 18:00:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 18:00:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 18:00:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 18:00:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 18:00:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 18:00:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 18:00:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 18:00:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 18:00:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 18:00:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 18:00:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 18:00:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 18:00:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 18:00:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 18:00:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 18:00:55,904 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 18:00:55,905 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 18:00:55,905 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 18:00:55,905 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 18:00:55,905 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 18:00:55,905 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 18:00:55,905 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 18:00:55,905 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 18:00:55,906 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 18:00:55,906 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 18:00:55,906 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 18:00:55,906 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 18:00:55,906 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 18:00:55,906 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 18:00:55,906 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 18:00:55,907 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 18:00:55,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 18:00:55,907 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 18:00:55,907 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-30 18:00:55,907 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-30 18:00:55,907 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 18:00:55,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 18:00:55,907 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 18:00:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 18:00:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 18:00:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 18:00:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 18:00:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 18:00:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 18:00:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 18:00:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 18:00:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 18:00:56,208 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 18:00:56,208 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-08-30 18:00:56,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:00:56 BoogieIcfgContainer [2021-08-30 18:00:56,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 18:00:56,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 18:00:56,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 18:00:56,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 18:00:56,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 06:00:55" (1/3) ... [2021-08-30 18:00:56,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@670b94e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:00:56, skipping insertion in model container [2021-08-30 18:00:56,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:00:55" (2/3) ... [2021-08-30 18:00:56,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@670b94e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:00:56, skipping insertion in model container [2021-08-30 18:00:56,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:00:56" (3/3) ... [2021-08-30 18:00:56,215 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2021-08-30 18:00:56,218 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 18:00:56,218 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 65 error locations. [2021-08-30 18:00:56,252 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 18:00:56,257 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 [2021-08-30 18:00:56,257 INFO L340 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2021-08-30 18:00:56,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 73 states have (on average 2.136986301369863) internal successors, (156), 138 states have internal predecessors, (156), 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) [2021-08-30 18:00:56,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 18:00:56,273 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:00:56,273 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:00:56,273 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-08-30 18:00:56,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:00:56,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1707240052, now seen corresponding path program 1 times [2021-08-30 18:00:56,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:00:56,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913739688] [2021-08-30 18:00:56,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:00:56,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:00:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:00:56,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:00:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:00:56,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:00:56,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:00:56,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913739688] [2021-08-30 18:00:56,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913739688] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:00:56,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:00:56,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 18:00:56,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914944766] [2021-08-30 18:00:56,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 18:00:56,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:00:56,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 18:00:56,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:00:56,539 INFO L87 Difference]: Start difference. First operand has 143 states, 73 states have (on average 2.136986301369863) internal successors, (156), 138 states have internal predecessors, (156), 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) [2021-08-30 18:00:56,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:00:56,810 INFO L93 Difference]: Finished difference Result 143 states and 149 transitions. [2021-08-30 18:00:56,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 18:00:56,813 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 [2021-08-30 18:00:56,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:00:56,821 INFO L225 Difference]: With dead ends: 143 [2021-08-30 18:00:56,821 INFO L226 Difference]: Without dead ends: 139 [2021-08-30 18:00:56,823 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.51ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:00:56,825 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 118 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 171.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.46ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 221.71ms IncrementalHoareTripleChecker+Time [2021-08-30 18:00:56,826 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 8 Invalid, 309 Unknown, 0 Unchecked, 6.46ms Time], IncrementalHoareTripleChecker [11 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 221.71ms Time] [2021-08-30 18:00:56,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-08-30 18:00:56,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2021-08-30 18:00:56,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 74 states have (on average 1.8783783783783783) internal successors, (139), 131 states have internal predecessors, (139), 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) [2021-08-30 18:00:56,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 142 transitions. [2021-08-30 18:00:56,882 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 142 transitions. Word has length 7 [2021-08-30 18:00:56,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:00:56,883 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 142 transitions. [2021-08-30 18:00:56,884 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) [2021-08-30 18:00:56,884 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 142 transitions. [2021-08-30 18:00:56,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 18:00:56,885 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:00:56,885 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:00:56,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 18:00:56,886 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-08-30 18:00:56,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:00:56,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1707240051, now seen corresponding path program 1 times [2021-08-30 18:00:56,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:00:56,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934066570] [2021-08-30 18:00:56,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:00:56,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:00:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:00:56,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:00:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:00:56,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:00:56,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:00:56,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934066570] [2021-08-30 18:00:56,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934066570] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:00:56,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:00:56,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 18:00:56,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261084507] [2021-08-30 18:00:56,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 18:00:56,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:00:56,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 18:00:56,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:00:56,972 INFO L87 Difference]: Start difference. First operand 135 states and 142 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) [2021-08-30 18:00:57,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:00:57,215 INFO L93 Difference]: Finished difference Result 152 states and 158 transitions. [2021-08-30 18:00:57,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 18:00:57,216 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 [2021-08-30 18:00:57,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:00:57,217 INFO L225 Difference]: With dead ends: 152 [2021-08-30 18:00:57,217 INFO L226 Difference]: Without dead ends: 152 [2021-08-30 18:00:57,217 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.20ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:00:57,218 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 113 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 155.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.25ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 219.30ms IncrementalHoareTripleChecker+Time [2021-08-30 18:00:57,218 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 7 Invalid, 311 Unknown, 0 Unchecked, 4.25ms Time], IncrementalHoareTripleChecker [10 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 219.30ms Time] [2021-08-30 18:00:57,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-08-30 18:00:57,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 139. [2021-08-30 18:00:57,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 81 states have (on average 1.7654320987654322) internal successors, (143), 135 states have internal predecessors, (143), 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) [2021-08-30 18:00:57,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 146 transitions. [2021-08-30 18:00:57,246 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 146 transitions. Word has length 7 [2021-08-30 18:00:57,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:00:57,246 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 146 transitions. [2021-08-30 18:00:57,246 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) [2021-08-30 18:00:57,246 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 146 transitions. [2021-08-30 18:00:57,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-30 18:00:57,247 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:00:57,247 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:00:57,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 18:00:57,247 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-08-30 18:00:57,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:00:57,248 INFO L82 PathProgramCache]: Analyzing trace with hash 152402486, now seen corresponding path program 1 times [2021-08-30 18:00:57,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:00:57,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296663932] [2021-08-30 18:00:57,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:00:57,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:00:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:00:57,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:00:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:00:57,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:00:57,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:00:57,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296663932] [2021-08-30 18:00:57,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296663932] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:00:57,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:00:57,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 18:00:57,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035354949] [2021-08-30 18:00:57,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 18:00:57,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:00:57,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 18:00:57,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 18:00:57,339 INFO L87 Difference]: Start difference. First operand 139 states and 146 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-08-30 18:00:57,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:00:57,680 INFO L93 Difference]: Finished difference Result 192 states and 202 transitions. [2021-08-30 18:00:57,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 18:00:57,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 13 [2021-08-30 18:00:57,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:00:57,681 INFO L225 Difference]: With dead ends: 192 [2021-08-30 18:00:57,681 INFO L226 Difference]: Without dead ends: 192 [2021-08-30 18:00:57,681 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.30ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 18:00:57,682 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 199 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 259.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.10ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 317.31ms IncrementalHoareTripleChecker+Time [2021-08-30 18:00:57,682 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 10 Invalid, 441 Unknown, 0 Unchecked, 4.10ms Time], IncrementalHoareTripleChecker [14 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 317.31ms Time] [2021-08-30 18:00:57,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-08-30 18:00:57,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 154. [2021-08-30 18:00:57,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 97 states have (on average 1.7628865979381443) internal successors, (171), 150 states have internal predecessors, (171), 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) [2021-08-30 18:00:57,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 174 transitions. [2021-08-30 18:00:57,687 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 174 transitions. Word has length 13 [2021-08-30 18:00:57,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:00:57,687 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 174 transitions. [2021-08-30 18:00:57,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-08-30 18:00:57,688 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 174 transitions. [2021-08-30 18:00:57,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-30 18:00:57,688 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:00:57,688 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:00:57,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-30 18:00:57,688 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-08-30 18:00:57,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:00:57,689 INFO L82 PathProgramCache]: Analyzing trace with hash 152402485, now seen corresponding path program 1 times [2021-08-30 18:00:57,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:00:57,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245601136] [2021-08-30 18:00:57,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:00:57,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:00:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:00:57,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:00:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:00:57,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:00:57,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:00:57,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245601136] [2021-08-30 18:00:57,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245601136] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:00:57,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:00:57,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 18:00:57,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133174126] [2021-08-30 18:00:57,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 18:00:57,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:00:57,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 18:00:57,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 18:00:57,742 INFO L87 Difference]: Start difference. First operand 154 states and 174 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-08-30 18:00:57,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:00:57,933 INFO L93 Difference]: Finished difference Result 156 states and 169 transitions. [2021-08-30 18:00:57,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 18:00:57,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 13 [2021-08-30 18:00:57,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:00:57,934 INFO L225 Difference]: With dead ends: 156 [2021-08-30 18:00:57,934 INFO L226 Difference]: Without dead ends: 156 [2021-08-30 18:00:57,935 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.59ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 18:00:57,935 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 180 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 144.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.77ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 177.68ms IncrementalHoareTripleChecker+Time [2021-08-30 18:00:57,936 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 10 Invalid, 341 Unknown, 0 Unchecked, 1.77ms Time], IncrementalHoareTripleChecker [28 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 177.68ms Time] [2021-08-30 18:00:57,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-08-30 18:00:57,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 142. [2021-08-30 18:00:57,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 98 states have (on average 1.5612244897959184) internal successors, (153), 138 states have internal predecessors, (153), 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) [2021-08-30 18:00:57,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 156 transitions. [2021-08-30 18:00:57,940 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 156 transitions. Word has length 13 [2021-08-30 18:00:57,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:00:57,941 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 156 transitions. [2021-08-30 18:00:57,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-08-30 18:00:57,941 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 156 transitions. [2021-08-30 18:00:57,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-30 18:00:57,941 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:00:57,942 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:00:57,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-30 18:00:57,942 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr32ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-08-30 18:00:57,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:00:57,942 INFO L82 PathProgramCache]: Analyzing trace with hash 429896239, now seen corresponding path program 1 times [2021-08-30 18:00:57,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:00:57,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648038434] [2021-08-30 18:00:57,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:00:57,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:00:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:00:57,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:00:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:00:57,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:00:57,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:00:57,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648038434] [2021-08-30 18:00:57,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648038434] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:00:57,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:00:57,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 18:00:57,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138277433] [2021-08-30 18:00:57,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 18:00:57,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:00:57,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 18:00:57,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 18:00:57,993 INFO L87 Difference]: Start difference. First operand 142 states and 156 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-08-30 18:00:58,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:00:58,170 INFO L93 Difference]: Finished difference Result 158 states and 167 transitions. [2021-08-30 18:00:58,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 18:00:58,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 15 [2021-08-30 18:00:58,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:00:58,171 INFO L225 Difference]: With dead ends: 158 [2021-08-30 18:00:58,171 INFO L226 Difference]: Without dead ends: 158 [2021-08-30 18:00:58,172 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.17ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 18:00:58,172 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 143 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.39ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 164.50ms IncrementalHoareTripleChecker+Time [2021-08-30 18:00:58,172 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 10 Invalid, 380 Unknown, 0 Unchecked, 1.39ms Time], IncrementalHoareTripleChecker [5 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 164.50ms Time] [2021-08-30 18:00:58,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-08-30 18:00:58,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 140. [2021-08-30 18:00:58,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 97 states have (on average 1.5360824742268042) internal successors, (149), 136 states have internal predecessors, (149), 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) [2021-08-30 18:00:58,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 152 transitions. [2021-08-30 18:00:58,176 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 152 transitions. Word has length 15 [2021-08-30 18:00:58,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:00:58,176 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 152 transitions. [2021-08-30 18:00:58,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-08-30 18:00:58,177 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 152 transitions. [2021-08-30 18:00:58,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-30 18:00:58,177 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:00:58,177 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:00:58,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-30 18:00:58,177 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr10REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-08-30 18:00:58,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:00:58,177 INFO L82 PathProgramCache]: Analyzing trace with hash 442001777, now seen corresponding path program 1 times [2021-08-30 18:00:58,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:00:58,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549967651] [2021-08-30 18:00:58,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:00:58,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:00:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:00:58,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:00:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:00:58,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:00:58,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:00:58,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549967651] [2021-08-30 18:00:58,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549967651] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:00:58,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:00:58,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 18:00:58,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885481584] [2021-08-30 18:00:58,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 18:00:58,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:00:58,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 18:00:58,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 18:00:58,253 INFO L87 Difference]: Start difference. First operand 140 states and 152 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) [2021-08-30 18:00:58,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:00:58,513 INFO L93 Difference]: Finished difference Result 139 states and 150 transitions. [2021-08-30 18:00:58,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 18:00:58,514 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 [2021-08-30 18:00:58,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:00:58,514 INFO L225 Difference]: With dead ends: 139 [2021-08-30 18:00:58,514 INFO L226 Difference]: Without dead ends: 139 [2021-08-30 18:00:58,515 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 32.27ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-30 18:00:58,515 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 190.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.99ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 235.34ms IncrementalHoareTripleChecker+Time [2021-08-30 18:00:58,516 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 13 Invalid, 563 Unknown, 0 Unchecked, 1.99ms Time], IncrementalHoareTripleChecker [3 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 235.34ms Time] [2021-08-30 18:00:58,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-08-30 18:00:58,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-08-30 18:00:58,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 97 states have (on average 1.5154639175257731) internal successors, (147), 135 states have internal predecessors, (147), 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) [2021-08-30 18:00:58,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 150 transitions. [2021-08-30 18:00:58,520 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 150 transitions. Word has length 16 [2021-08-30 18:00:58,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:00:58,520 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 150 transitions. [2021-08-30 18:00:58,520 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) [2021-08-30 18:00:58,520 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 150 transitions. [2021-08-30 18:00:58,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-30 18:00:58,521 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:00:58,521 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:00:58,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-30 18:00:58,521 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-08-30 18:00:58,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:00:58,522 INFO L82 PathProgramCache]: Analyzing trace with hash 442001778, now seen corresponding path program 1 times [2021-08-30 18:00:58,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:00:58,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66835879] [2021-08-30 18:00:58,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:00:58,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:00:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:00:58,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:00:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:00:58,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:00:58,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:00:58,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66835879] [2021-08-30 18:00:58,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66835879] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:00:58,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:00:58,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 18:00:58,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658573706] [2021-08-30 18:00:58,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 18:00:58,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:00:58,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 18:00:58,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-30 18:00:58,605 INFO L87 Difference]: Start difference. First operand 139 states and 150 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) [2021-08-30 18:00:58,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:00:58,864 INFO L93 Difference]: Finished difference Result 138 states and 148 transitions. [2021-08-30 18:00:58,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 18:00:58,864 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 [2021-08-30 18:00:58,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:00:58,865 INFO L225 Difference]: With dead ends: 138 [2021-08-30 18:00:58,865 INFO L226 Difference]: Without dead ends: 138 [2021-08-30 18:00:58,865 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 39.32ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-30 18:00:58,865 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 179.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.91ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 234.41ms IncrementalHoareTripleChecker+Time [2021-08-30 18:00:58,866 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 563 Unknown, 0 Unchecked, 1.91ms Time], IncrementalHoareTripleChecker [2 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 234.41ms Time] [2021-08-30 18:00:58,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-08-30 18:00:58,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2021-08-30 18:00:58,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 97 states have (on average 1.4948453608247423) internal successors, (145), 134 states have internal predecessors, (145), 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) [2021-08-30 18:00:58,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 148 transitions. [2021-08-30 18:00:58,884 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 148 transitions. Word has length 16 [2021-08-30 18:00:58,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:00:58,884 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 148 transitions. [2021-08-30 18:00:58,885 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) [2021-08-30 18:00:58,885 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 148 transitions. [2021-08-30 18:00:58,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-30 18:00:58,886 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:00:58,886 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:00:58,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-30 18:00:58,887 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr35ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-08-30 18:00:58,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:00:58,887 INFO L82 PathProgramCache]: Analyzing trace with hash -549611590, now seen corresponding path program 1 times [2021-08-30 18:00:58,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:00:58,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032324221] [2021-08-30 18:00:58,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:00:58,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:00:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:00:58,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:00:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:00:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:00:58,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:00:58,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032324221] [2021-08-30 18:00:58,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032324221] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:00:58,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:00:58,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-30 18:00:58,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390985476] [2021-08-30 18:00:58,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 18:00:58,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:00:58,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 18:00:58,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-30 18:00:58,961 INFO L87 Difference]: Start difference. First operand 138 states and 148 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-08-30 18:00:59,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:00:59,250 INFO L93 Difference]: Finished difference Result 198 states and 213 transitions. [2021-08-30 18:00:59,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 18:00:59,250 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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 18 [2021-08-30 18:00:59,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:00:59,251 INFO L225 Difference]: With dead ends: 198 [2021-08-30 18:00:59,251 INFO L226 Difference]: Without dead ends: 198 [2021-08-30 18:00:59,251 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 38.34ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-30 18:00:59,252 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 175 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 192.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.54ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 256.25ms IncrementalHoareTripleChecker+Time [2021-08-30 18:00:59,252 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 16 Invalid, 606 Unknown, 0 Unchecked, 2.54ms Time], IncrementalHoareTripleChecker [16 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 256.25ms Time] [2021-08-30 18:00:59,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-08-30 18:00:59,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 143. [2021-08-30 18:00:59,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 102 states have (on average 1.4705882352941178) internal successors, (150), 139 states have internal predecessors, (150), 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) [2021-08-30 18:00:59,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 153 transitions. [2021-08-30 18:00:59,255 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 153 transitions. Word has length 18 [2021-08-30 18:00:59,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:00:59,256 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 153 transitions. [2021-08-30 18:00:59,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-08-30 18:00:59,256 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 153 transitions. [2021-08-30 18:00:59,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 18:00:59,256 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:00:59,256 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:00:59,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-30 18:00:59,256 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr14REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-08-30 18:00:59,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:00:59,257 INFO L82 PathProgramCache]: Analyzing trace with hash -63373389, now seen corresponding path program 1 times [2021-08-30 18:00:59,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:00:59,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145548944] [2021-08-30 18:00:59,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:00:59,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:00:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:00:59,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:00:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:00:59,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:00:59,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:00:59,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145548944] [2021-08-30 18:00:59,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145548944] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:00:59,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:00:59,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-30 18:00:59,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050325988] [2021-08-30 18:00:59,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 18:00:59,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:00:59,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 18:00:59,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-08-30 18:00:59,354 INFO L87 Difference]: Start difference. First operand 143 states and 153 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 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) [2021-08-30 18:00:59,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:00:59,670 INFO L93 Difference]: Finished difference Result 143 states and 152 transitions. [2021-08-30 18:00:59,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 18:00:59,671 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 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 [2021-08-30 18:00:59,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:00:59,672 INFO L225 Difference]: With dead ends: 143 [2021-08-30 18:00:59,672 INFO L226 Difference]: Without dead ends: 143 [2021-08-30 18:00:59,672 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 100.63ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-08-30 18:00:59,672 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 158 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 192.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.62ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 241.85ms IncrementalHoareTripleChecker+Time [2021-08-30 18:00:59,672 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 19 Invalid, 651 Unknown, 0 Unchecked, 2.62ms Time], IncrementalHoareTripleChecker [20 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 241.85ms Time] [2021-08-30 18:00:59,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-08-30 18:00:59,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2021-08-30 18:00:59,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 102 states have (on average 1.4607843137254901) internal successors, (149), 138 states have internal predecessors, (149), 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) [2021-08-30 18:00:59,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2021-08-30 18:00:59,675 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 20 [2021-08-30 18:00:59,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:00:59,675 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2021-08-30 18:00:59,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 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) [2021-08-30 18:00:59,675 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2021-08-30 18:00:59,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 18:00:59,676 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:00:59,676 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:00:59,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-30 18:00:59,676 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr15REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-08-30 18:00:59,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:00:59,676 INFO L82 PathProgramCache]: Analyzing trace with hash -63373388, now seen corresponding path program 1 times [2021-08-30 18:00:59,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:00:59,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108491560] [2021-08-30 18:00:59,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:00:59,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:00:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:00:59,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 18:00:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:00:59,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:00:59,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 18:00:59,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108491560] [2021-08-30 18:00:59,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108491560] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 18:00:59,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:00:59,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-30 18:00:59,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993802278] [2021-08-30 18:00:59,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-30 18:00:59,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 18:00:59,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-30 18:00:59,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-08-30 18:00:59,808 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 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) [2021-08-30 18:01:00,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:01:00,379 INFO L93 Difference]: Finished difference Result 147 states and 157 transitions. [2021-08-30 18:01:00,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-30 18:01:00,380 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 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 [2021-08-30 18:01:00,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:01:00,381 INFO L225 Difference]: With dead ends: 147 [2021-08-30 18:01:00,381 INFO L226 Difference]: Without dead ends: 147 [2021-08-30 18:01:00,381 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 258.22ms TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-08-30 18:01:00,382 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 166 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 289.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.78ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 348.36ms IncrementalHoareTripleChecker+Time [2021-08-30 18:01:00,382 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 25 Invalid, 883 Unknown, 0 Unchecked, 3.78ms Time], IncrementalHoareTripleChecker [32 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 348.36ms Time] [2021-08-30 18:01:00,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-08-30 18:01:00,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 138. [2021-08-30 18:01:00,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 104 states have (on average 1.4038461538461537) internal successors, (146), 134 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) [2021-08-30 18:01:00,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 149 transitions. [2021-08-30 18:01:00,386 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 149 transitions. Word has length 20 [2021-08-30 18:01:00,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:01:00,386 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 149 transitions. [2021-08-30 18:01:00,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 10 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) [2021-08-30 18:01:00,386 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 149 transitions. [2021-08-30 18:01:00,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-30 18:01:00,387 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:01:00,387 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:01:00,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-30 18:01:00,388 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr44ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-08-30 18:01:00,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:01:00,388 INFO L82 PathProgramCache]: Analyzing trace with hash -195087453, now seen corresponding path program 1 times [2021-08-30 18:01:00,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 18:01:00,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481581359] [2021-08-30 18:01:00,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:01:00,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 18:01:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 18:01:00,398 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-30 18:01:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 18:01:00,424 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-30 18:01:00,425 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-30 18:01:00,425 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr44ASSERT_VIOLATIONMEMORY_LEAK (64 of 65 remaining) [2021-08-30 18:01:00,427 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (63 of 65 remaining) [2021-08-30 18:01:00,428 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (62 of 65 remaining) [2021-08-30 18:01:00,428 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (61 of 65 remaining) [2021-08-30 18:01:00,428 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (60 of 65 remaining) [2021-08-30 18:01:00,428 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (59 of 65 remaining) [2021-08-30 18:01:00,428 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (58 of 65 remaining) [2021-08-30 18:01:00,428 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION (57 of 65 remaining) [2021-08-30 18:01:00,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION (56 of 65 remaining) [2021-08-30 18:01:00,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION (55 of 65 remaining) [2021-08-30 18:01:00,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION (54 of 65 remaining) [2021-08-30 18:01:00,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION (53 of 65 remaining) [2021-08-30 18:01:00,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION (52 of 65 remaining) [2021-08-30 18:01:00,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION (51 of 65 remaining) [2021-08-30 18:01:00,429 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION (50 of 65 remaining) [2021-08-30 18:01:00,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION (49 of 65 remaining) [2021-08-30 18:01:00,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION (48 of 65 remaining) [2021-08-30 18:01:00,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION (47 of 65 remaining) [2021-08-30 18:01:00,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION (46 of 65 remaining) [2021-08-30 18:01:00,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION (45 of 65 remaining) [2021-08-30 18:01:00,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION (44 of 65 remaining) [2021-08-30 18:01:00,430 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION (43 of 65 remaining) [2021-08-30 18:01:00,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION (42 of 65 remaining) [2021-08-30 18:01:00,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION (41 of 65 remaining) [2021-08-30 18:01:00,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION (40 of 65 remaining) [2021-08-30 18:01:00,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION (39 of 65 remaining) [2021-08-30 18:01:00,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION (38 of 65 remaining) [2021-08-30 18:01:00,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION (37 of 65 remaining) [2021-08-30 18:01:00,431 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION (36 of 65 remaining) [2021-08-30 18:01:00,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION (35 of 65 remaining) [2021-08-30 18:01:00,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION (34 of 65 remaining) [2021-08-30 18:01:00,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION (33 of 65 remaining) [2021-08-30 18:01:00,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION (32 of 65 remaining) [2021-08-30 18:01:00,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32ASSERT_VIOLATIONMEMORY_LEAK (31 of 65 remaining) [2021-08-30 18:01:00,432 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION (30 of 65 remaining) [2021-08-30 18:01:00,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34REQUIRES_VIOLATION (29 of 65 remaining) [2021-08-30 18:01:00,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35ASSERT_VIOLATIONMEMORY_LEAK (28 of 65 remaining) [2021-08-30 18:01:00,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION (27 of 65 remaining) [2021-08-30 18:01:00,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION (26 of 65 remaining) [2021-08-30 18:01:00,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION (25 of 65 remaining) [2021-08-30 18:01:00,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION (24 of 65 remaining) [2021-08-30 18:01:00,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION (23 of 65 remaining) [2021-08-30 18:01:00,433 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41REQUIRES_VIOLATION (22 of 65 remaining) [2021-08-30 18:01:00,434 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42REQUIRES_VIOLATION (21 of 65 remaining) [2021-08-30 18:01:00,434 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43REQUIRES_VIOLATION (20 of 65 remaining) [2021-08-30 18:01:00,434 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION (19 of 65 remaining) [2021-08-30 18:01:00,434 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46REQUIRES_VIOLATION (18 of 65 remaining) [2021-08-30 18:01:00,434 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47REQUIRES_VIOLATION (17 of 65 remaining) [2021-08-30 18:01:00,434 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48REQUIRES_VIOLATION (16 of 65 remaining) [2021-08-30 18:01:00,434 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION (15 of 65 remaining) [2021-08-30 18:01:00,435 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION (14 of 65 remaining) [2021-08-30 18:01:00,435 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_FREE (13 of 65 remaining) [2021-08-30 18:01:00,435 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52ASSERT_VIOLATIONMEMORY_FREE (12 of 65 remaining) [2021-08-30 18:01:00,435 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_FREE (11 of 65 remaining) [2021-08-30 18:01:00,435 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54REQUIRES_VIOLATION (10 of 65 remaining) [2021-08-30 18:01:00,435 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr55REQUIRES_VIOLATION (9 of 65 remaining) [2021-08-30 18:01:00,435 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr56ASSERT_VIOLATIONMEMORY_FREE (8 of 65 remaining) [2021-08-30 18:01:00,436 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr57ASSERT_VIOLATIONMEMORY_FREE (7 of 65 remaining) [2021-08-30 18:01:00,436 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr58ASSERT_VIOLATIONMEMORY_FREE (6 of 65 remaining) [2021-08-30 18:01:00,436 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr59REQUIRES_VIOLATION (5 of 65 remaining) [2021-08-30 18:01:00,436 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr60REQUIRES_VIOLATION (4 of 65 remaining) [2021-08-30 18:01:00,436 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr61ASSERT_VIOLATIONMEMORY_FREE (3 of 65 remaining) [2021-08-30 18:01:00,436 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr62ASSERT_VIOLATIONMEMORY_FREE (2 of 65 remaining) [2021-08-30 18:01:00,436 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr63ASSERT_VIOLATIONMEMORY_FREE (1 of 65 remaining) [2021-08-30 18:01:00,437 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr64ENSURES_VIOLATIONMEMORY_LEAK (0 of 65 remaining) [2021-08-30 18:01:00,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-30 18:01:00,441 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 18:01:00,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 06:01:00 BoogieIcfgContainer [2021-08-30 18:01:00,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 18:01:00,459 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 18:01:00,460 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 18:01:00,460 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 18:01:00,460 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:00:56" (3/4) ... [2021-08-30 18:01:00,462 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 18:01:00,462 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 18:01:00,462 INFO L158 Benchmark]: Toolchain (without parser) took 5047.38ms. Allocated memory was 52.4MB in the beginning and 98.6MB in the end (delta: 46.1MB). Free memory was 28.8MB in the beginning and 34.1MB in the end (delta: -5.2MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. [2021-08-30 18:01:00,463 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 52.4MB. Free memory is still 35.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 18:01:00,463 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.61ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 28.7MB in the beginning and 43.9MB in the end (delta: -15.2MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2021-08-30 18:01:00,463 INFO L158 Benchmark]: Boogie Preprocessor took 50.29ms. Allocated memory is still 67.1MB. Free memory was 43.9MB in the beginning and 40.9MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 18:01:00,463 INFO L158 Benchmark]: RCFGBuilder took 400.17ms. Allocated memory is still 67.1MB. Free memory was 40.9MB in the beginning and 33.8MB in the end (delta: 7.1MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2021-08-30 18:01:00,464 INFO L158 Benchmark]: TraceAbstraction took 4248.27ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 33.3MB in the beginning and 35.0MB in the end (delta: -1.7MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2021-08-30 18:01:00,464 INFO L158 Benchmark]: Witness Printer took 2.67ms. Allocated memory is still 98.6MB. Free memory was 35.0MB in the beginning and 34.1MB in the end (delta: 888.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 18:01:00,465 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 52.4MB. Free memory is still 35.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 333.61ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 28.7MB in the beginning and 43.9MB in the end (delta: -15.2MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.29ms. Allocated memory is still 67.1MB. Free memory was 43.9MB in the beginning and 40.9MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 400.17ms. Allocated memory is still 67.1MB. Free memory was 40.9MB in the beginning and 33.8MB in the end (delta: 7.1MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. * TraceAbstraction took 4248.27ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 33.3MB in the beginning and 35.0MB in the end (delta: -1.7MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. * Witness Printer took 2.67ms. Allocated memory is still 98.6MB. Free memory was 35.0MB in the beginning and 34.1MB in the end (delta: 888.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1051]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1051. Possible FailurePath: [L1005] SLL* list = malloc(sizeof(SLL)); [L1006] list->next = ((void*)0) VAL [list={-1:0}] [L1007] list->prev = ((void*)0) VAL [list={-1:0}] [L1008] list->colour = BLACK VAL [list={-1:0}] [L1010] SLL* end = list; VAL [end={-1:0}, list={-1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1036] end = ((void*)0) [L1037] end = list VAL [end={-1:0}, list={-1:0}] [L1040] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}] [L1041] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}] [L1041] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}] [L1045] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}] [L1045] COND FALSE !(RED == end->colour) [L1051] EXPR end->next VAL [end={-1:0}, end->next={0:0}, list={-1:0}] [L1051] COND TRUE !(end->next) [L1051] reach_error() VAL [end={-1:0}, list={-1:0}] - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: 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: 1023]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1040]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1051]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1051]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1067]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1067]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1002]: 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, 65 error locations. Started 1 CEGAR loops. OverallTime: 4188.96ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 11.71ms, AutomataDifference: 3023.65ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 7.75ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1265 SdHoareTripleChecker+Valid, 2416.70ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1265 mSDsluCounter, 131 SdHoareTripleChecker+Invalid, 1906.44ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1106 mSDsCounter, 141 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4907 IncrementalHoareTripleChecker+Invalid, 5048 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 141 mSolverCounterUnsat, 31 mSDtfsCounter, 4907 mSolverCounterSat, 30.82ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 576.56ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=154occurred in iteration=3, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 93.37ms AutomataMinimizationTime, 10 MinimizatonAttempts, 152 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.15ms SsaConstructionTime, 113.92ms SatisfiabilityAnalysisTime, 688.09ms InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 901 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 could not prove your program: unable to determine feasibility of some traces [2021-08-30 18:01:00,505 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... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 18:01:02,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 18:01:02,050 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 18:01:02,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 18:01:02,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 18:01:02,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 18:01:02,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 18:01:02,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 18:01:02,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 18:01:02,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 18:01:02,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 18:01:02,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 18:01:02,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 18:01:02,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 18:01:02,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 18:01:02,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 18:01:02,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 18:01:02,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 18:01:02,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 18:01:02,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 18:01:02,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 18:01:02,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 18:01:02,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 18:01:02,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 18:01:02,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 18:01:02,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 18:01:02,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 18:01:02,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 18:01:02,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 18:01:02,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 18:01:02,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 18:01:02,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 18:01:02,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 18:01:02,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 18:01:02,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 18:01:02,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 18:01:02,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 18:01:02,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 18:01:02,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 18:01:02,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 18:01:02,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 18:01:02,130 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-30 18:01:02,147 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 18:01:02,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 18:01:02,152 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 18:01:02,152 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 18:01:02,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 18:01:02,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 18:01:02,155 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 18:01:02,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 18:01:02,155 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 18:01:02,155 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 18:01:02,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 18:01:02,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 18:01:02,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 18:01:02,156 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 18:01:02,157 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 18:01:02,157 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 18:01:02,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 18:01:02,157 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 18:01:02,157 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-30 18:01:02,157 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-30 18:01:02,157 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 18:01:02,158 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 18:01:02,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 18:01:02,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 18:01:02,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 18:01:02,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 18:01:02,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 18:01:02,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 18:01:02,159 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-30 18:01:02,159 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-30 18:01:02,159 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 18:01:02,159 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-30 18:01:02,159 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79a0f3fe2cfdc34f95f5ad882c4d01fe846ad912 [2021-08-30 18:01:02,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 18:01:02,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 18:01:02,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 18:01:02,447 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 18:01:02,447 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 18:01:02,449 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2021-08-30 18:01:02,488 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc3bada83/2c55985c881a4202a434e512cd433464/FLAG75f796c5e [2021-08-30 18:01:02,856 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 18:01:02,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2021-08-30 18:01:02,869 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc3bada83/2c55985c881a4202a434e512cd433464/FLAG75f796c5e [2021-08-30 18:01:03,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc3bada83/2c55985c881a4202a434e512cd433464 [2021-08-30 18:01:03,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 18:01:03,243 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 18:01:03,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 18:01:03,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 18:01:03,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 18:01:03,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:01:03" (1/1) ... [2021-08-30 18:01:03,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f416abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:01:03, skipping insertion in model container [2021-08-30 18:01:03,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:01:03" (1/1) ... [2021-08-30 18:01:03,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 18:01:03,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 18:01:03,467 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-rb-cnstr_1-2.i[22575,22588] [2021-08-30 18:01:03,478 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-rb-cnstr_1-2.i[22647,22660] [2021-08-30 18:01:03,480 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-rb-cnstr_1-2.i[22815,22828] [2021-08-30 18:01:03,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 18:01:03,500 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 18:01:03,537 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-rb-cnstr_1-2.i[22575,22588] [2021-08-30 18:01:03,538 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-rb-cnstr_1-2.i[22647,22660] [2021-08-30 18:01:03,539 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-rb-cnstr_1-2.i[22815,22828] [2021-08-30 18:01:03,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 18:01:03,563 INFO L208 MainTranslator]: Completed translation [2021-08-30 18:01:03,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:01:03 WrapperNode [2021-08-30 18:01:03,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 18:01:03,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 18:01:03,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 18:01:03,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 18:01:03,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:01:03" (1/1) ... [2021-08-30 18:01:03,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:01:03" (1/1) ... [2021-08-30 18:01:03,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:01:03" (1/1) ... [2021-08-30 18:01:03,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:01:03" (1/1) ... [2021-08-30 18:01:03,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:01:03" (1/1) ... [2021-08-30 18:01:03,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:01:03" (1/1) ... [2021-08-30 18:01:03,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:01:03" (1/1) ... [2021-08-30 18:01:03,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 18:01:03,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 18:01:03,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 18:01:03,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 18:01:03,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:01:03" (1/1) ... [2021-08-30 18:01:03,636 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 18:01:03,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 18:01:03,654 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) [2021-08-30 18:01:03,656 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 [2021-08-30 18:01:03,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 18:01:03,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 18:01:03,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 18:01:03,679 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 18:01:03,679 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 18:01:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 18:01:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 18:01:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 18:01:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 18:01:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 18:01:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 18:01:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 18:01:03,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 18:01:03,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 18:01:03,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 18:01:03,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 18:01:03,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 18:01:03,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 18:01:03,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 18:01:03,681 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 18:01:03,681 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 18:01:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 18:01:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 18:01:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 18:01:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 18:01:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 18:01:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 18:01:03,682 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 18:01:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 18:01:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 18:01:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 18:01:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 18:01:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 18:01:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 18:01:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 18:01:03,683 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 18:01:03,684 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 18:01:03,684 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 18:01:03,684 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 18:01:03,684 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 18:01:03,684 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 18:01:03,685 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 18:01:03,685 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 18:01:03,685 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 18:01:03,685 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 18:01:03,685 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 18:01:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 18:01:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 18:01:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 18:01:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 18:01:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 18:01:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 18:01:03,686 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 18:01:03,687 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 18:01:03,687 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 18:01:03,687 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 18:01:03,687 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 18:01:03,688 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 18:01:03,688 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 18:01:03,689 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-08-30 18:01:03,689 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 18:01:03,689 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 18:01:03,690 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 18:01:03,690 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 18:01:03,690 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 18:01:03,690 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 18:01:03,690 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 18:01:03,690 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 18:01:03,690 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 18:01:03,691 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 18:01:03,692 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 18:01:03,692 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 18:01:03,693 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 18:01:03,693 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 18:01:03,693 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 18:01:03,693 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 18:01:03,699 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 18:01:03,699 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 18:01:03,699 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 18:01:03,699 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 18:01:03,699 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 18:01:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 18:01:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 18:01:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 18:01:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 18:01:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 18:01:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 18:01:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 18:01:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 18:01:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 18:01:03,700 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 18:01:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 18:01:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 18:01:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 18:01:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 18:01:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 18:01:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 18:01:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 18:01:03,701 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 18:01:03,702 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 18:01:03,702 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 18:01:03,702 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 18:01:03,702 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 18:01:03,702 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 18:01:03,702 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 18:01:03,702 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 18:01:03,702 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 18:01:03,702 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 18:01:03,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 18:01:03,703 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 18:01:03,703 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-30 18:01:03,703 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-30 18:01:03,703 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 18:01:03,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 18:01:03,704 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 18:01:03,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 18:01:03,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 18:01:03,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-30 18:01:03,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 18:01:03,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-30 18:01:03,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 18:01:03,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 18:01:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-30 18:01:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 18:01:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 18:01:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-08-30 18:01:03,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-08-30 18:01:04,030 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 18:01:04,031 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-08-30 18:01:04,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:01:04 BoogieIcfgContainer [2021-08-30 18:01:04,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 18:01:04,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 18:01:04,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 18:01:04,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 18:01:04,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 06:01:03" (1/3) ... [2021-08-30 18:01:04,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357ba7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:01:04, skipping insertion in model container [2021-08-30 18:01:04,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:01:03" (2/3) ... [2021-08-30 18:01:04,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357ba7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:01:04, skipping insertion in model container [2021-08-30 18:01:04,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:01:04" (3/3) ... [2021-08-30 18:01:04,037 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2021-08-30 18:01:04,040 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 18:01:04,040 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 65 error locations. [2021-08-30 18:01:04,064 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 18:01:04,085 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 [2021-08-30 18:01:04,085 INFO L340 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2021-08-30 18:01:04,096 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 71 states have (on average 2.1690140845070425) internal successors, (154), 136 states have internal predecessors, (154), 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) [2021-08-30 18:01:04,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 18:01:04,101 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:01:04,101 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:01:04,101 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-08-30 18:01:04,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:01:04,104 INFO L82 PathProgramCache]: Analyzing trace with hash -486261088, now seen corresponding path program 1 times [2021-08-30 18:01:04,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 18:01:04,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225153273] [2021-08-30 18:01:04,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:01:04,112 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 18:01:04,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 18:01:04,114 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 18:01:04,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-30 18:01:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:01:04,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-30 18:01:04,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 18:01:04,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 18:01:04,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:01:04,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 18:01:04,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:01:04,386 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 18:01:04,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225153273] [2021-08-30 18:01:04,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225153273] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 18:01:04,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:01:04,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-30 18:01:04,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252697091] [2021-08-30 18:01:04,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 18:01:04,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 18:01:04,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 18:01:04,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 18:01:04,415 INFO L87 Difference]: Start difference. First operand has 141 states, 71 states have (on average 2.1690140845070425) internal successors, (154), 136 states have internal predecessors, (154), 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 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:01:04,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:01:04,744 INFO L93 Difference]: Finished difference Result 141 states and 147 transitions. [2021-08-30 18:01:04,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 18:01:04,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 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 [2021-08-30 18:01:04,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:01:04,751 INFO L225 Difference]: With dead ends: 141 [2021-08-30 18:01:04,755 INFO L226 Difference]: Without dead ends: 137 [2021-08-30 18:01:04,756 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 18:01:04,759 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 116 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 240.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.24ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 306.05ms IncrementalHoareTripleChecker+Time [2021-08-30 18:01:04,760 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 7 Invalid, 168 Unknown, 0 Unchecked, 2.24ms Time], IncrementalHoareTripleChecker [10 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 306.05ms Time] [2021-08-30 18:01:04,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-08-30 18:01:04,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 133. [2021-08-30 18:01:04,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 72 states have (on average 1.9027777777777777) internal successors, (137), 129 states have internal predecessors, (137), 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) [2021-08-30 18:01:04,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 140 transitions. [2021-08-30 18:01:04,809 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 140 transitions. Word has length 7 [2021-08-30 18:01:04,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:01:04,809 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 140 transitions. [2021-08-30 18:01:04,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:01:04,810 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 140 transitions. [2021-08-30 18:01:04,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 18:01:04,810 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:01:04,810 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:01:04,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-30 18:01:05,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 18:01:05,021 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-08-30 18:01:05,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:01:05,022 INFO L82 PathProgramCache]: Analyzing trace with hash -486261087, now seen corresponding path program 1 times [2021-08-30 18:01:05,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 18:01:05,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474248441] [2021-08-30 18:01:05,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:01:05,023 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 18:01:05,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 18:01:05,025 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 18:01:05,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-30 18:01:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:01:05,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-30 18:01:05,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 18:01:05,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 18:01:05,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:01:05,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 18:01:05,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:01:05,223 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 18:01:05,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474248441] [2021-08-30 18:01:05,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474248441] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 18:01:05,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:01:05,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-08-30 18:01:05,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74181498] [2021-08-30 18:01:05,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 18:01:05,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 18:01:05,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 18:01:05,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:01:05,226 INFO L87 Difference]: Start difference. First operand 133 states and 140 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:01:05,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:01:05,551 INFO L93 Difference]: Finished difference Result 150 states and 156 transitions. [2021-08-30 18:01:05,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 18:01:05,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 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 [2021-08-30 18:01:05,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:01:05,553 INFO L225 Difference]: With dead ends: 150 [2021-08-30 18:01:05,553 INFO L226 Difference]: Without dead ends: 150 [2021-08-30 18:01:05,553 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.54ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:01:05,553 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 125 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 255.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.87ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 312.68ms IncrementalHoareTripleChecker+Time [2021-08-30 18:01:05,554 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 9 Invalid, 199 Unknown, 0 Unchecked, 1.87ms Time], IncrementalHoareTripleChecker [11 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 312.68ms Time] [2021-08-30 18:01:05,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-08-30 18:01:05,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 137. [2021-08-30 18:01:05,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 79 states have (on average 1.7848101265822784) internal successors, (141), 133 states have internal predecessors, (141), 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) [2021-08-30 18:01:05,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 144 transitions. [2021-08-30 18:01:05,559 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 144 transitions. Word has length 7 [2021-08-30 18:01:05,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:01:05,559 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 144 transitions. [2021-08-30 18:01:05,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:01:05,559 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 144 transitions. [2021-08-30 18:01:05,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-30 18:01:05,560 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:01:05,560 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:01:05,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-30 18:01:05,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 18:01:05,766 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-08-30 18:01:05,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:01:05,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1027877289, now seen corresponding path program 1 times [2021-08-30 18:01:05,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 18:01:05,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920958116] [2021-08-30 18:01:05,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:01:05,767 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 18:01:05,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 18:01:05,768 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 18:01:05,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-30 18:01:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:01:05,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 18:01:05,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 18:01:05,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 18:01:05,912 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-30 18:01:05,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2021-08-30 18:01:05,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:01:05,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 18:01:05,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:01:05,968 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 18:01:05,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920958116] [2021-08-30 18:01:05,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920958116] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 18:01:05,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:01:05,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-08-30 18:01:05,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377604142] [2021-08-30 18:01:05,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 18:01:05,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 18:01:05,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 18:01:05,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:01:05,969 INFO L87 Difference]: Start difference. First operand 137 states and 144 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:01:06,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:01:06,279 INFO L93 Difference]: Finished difference Result 142 states and 150 transitions. [2021-08-30 18:01:06,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 18:01:06,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 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 12 [2021-08-30 18:01:06,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:01:06,281 INFO L225 Difference]: With dead ends: 142 [2021-08-30 18:01:06,281 INFO L226 Difference]: Without dead ends: 142 [2021-08-30 18:01:06,281 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.49ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 18:01:06,281 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 182 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 239.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.31ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 293.18ms IncrementalHoareTripleChecker+Time [2021-08-30 18:01:06,282 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 9 Invalid, 218 Unknown, 0 Unchecked, 2.31ms Time], IncrementalHoareTripleChecker [26 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 293.18ms Time] [2021-08-30 18:01:06,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-08-30 18:01:06,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 127. [2021-08-30 18:01:06,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 82 states have (on average 1.6341463414634145) internal successors, (134), 123 states have internal predecessors, (134), 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) [2021-08-30 18:01:06,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 137 transitions. [2021-08-30 18:01:06,286 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 137 transitions. Word has length 12 [2021-08-30 18:01:06,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:01:06,286 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 137 transitions. [2021-08-30 18:01:06,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:01:06,286 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 137 transitions. [2021-08-30 18:01:06,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-30 18:01:06,286 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:01:06,286 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:01:06,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-30 18:01:06,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 18:01:06,489 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-08-30 18:01:06,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:01:06,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1027877290, now seen corresponding path program 1 times [2021-08-30 18:01:06,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 18:01:06,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743894523] [2021-08-30 18:01:06,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:01:06,490 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 18:01:06,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 18:01:06,491 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 18:01:06,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-30 18:01:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:01:06,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-30 18:01:06,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 18:01:06,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 18:01:06,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 18:01:06,688 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 18:01:06,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-08-30 18:01:06,698 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-30 18:01:06,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 29 [2021-08-30 18:01:06,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:01:06,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 18:01:09,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:01:09,340 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 18:01:09,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743894523] [2021-08-30 18:01:09,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743894523] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 18:01:09,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:01:09,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-08-30 18:01:09,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797189453] [2021-08-30 18:01:09,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 18:01:09,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 18:01:09,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 18:01:09,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2021-08-30 18:01:09,342 INFO L87 Difference]: Start difference. First operand 127 states and 137 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:01:10,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:01:10,304 INFO L93 Difference]: Finished difference Result 171 states and 186 transitions. [2021-08-30 18:01:10,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 18:01:10,306 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (2), 1 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 12 [2021-08-30 18:01:10,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:01:10,306 INFO L225 Difference]: With dead ends: 171 [2021-08-30 18:01:10,307 INFO L226 Difference]: Without dead ends: 171 [2021-08-30 18:01:10,307 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2397.45ms TimeCoverageRelationStatistics Valid=31, Invalid=58, Unknown=1, NotChecked=0, Total=90 [2021-08-30 18:01:10,307 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 80 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 766.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.88ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 417 IncrementalHoareTripleChecker+Unchecked, 885.15ms IncrementalHoareTripleChecker+Time [2021-08-30 18:01:10,308 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 18 Invalid, 752 Unknown, 0 Unchecked, 4.88ms Time], IncrementalHoareTripleChecker [20 Valid, 315 Invalid, 0 Unknown, 417 Unchecked, 885.15ms Time] [2021-08-30 18:01:10,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-08-30 18:01:10,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 136. [2021-08-30 18:01:10,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 95 states have (on average 1.5578947368421052) internal successors, (148), 132 states have internal predecessors, (148), 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) [2021-08-30 18:01:10,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 151 transitions. [2021-08-30 18:01:10,313 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 151 transitions. Word has length 12 [2021-08-30 18:01:10,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:01:10,313 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 151 transitions. [2021-08-30 18:01:10,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:01:10,313 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 151 transitions. [2021-08-30 18:01:10,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-30 18:01:10,314 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:01:10,314 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:01:10,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-30 18:01:10,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 18:01:10,517 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr32ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-08-30 18:01:10,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:01:10,518 INFO L82 PathProgramCache]: Analyzing trace with hash -52407454, now seen corresponding path program 1 times [2021-08-30 18:01:10,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 18:01:10,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241775329] [2021-08-30 18:01:10,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:01:10,518 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 18:01:10,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 18:01:10,519 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 18:01:10,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-30 18:01:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:01:10,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-30 18:01:10,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 18:01:10,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:01:10,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 18:01:10,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:01:10,700 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 18:01:10,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241775329] [2021-08-30 18:01:10,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241775329] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 18:01:10,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:01:10,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-30 18:01:10,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124426285] [2021-08-30 18:01:10,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 18:01:10,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 18:01:10,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 18:01:10,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 18:01:10,704 INFO L87 Difference]: Start difference. First operand 136 states and 151 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:01:11,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:01:11,175 INFO L93 Difference]: Finished difference Result 166 states and 177 transitions. [2021-08-30 18:01:11,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 18:01:11,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 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 14 [2021-08-30 18:01:11,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:01:11,176 INFO L225 Difference]: With dead ends: 166 [2021-08-30 18:01:11,176 INFO L226 Difference]: Without dead ends: 166 [2021-08-30 18:01:11,176 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.48ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 18:01:11,177 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 144 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 369.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.57ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 448.24ms IncrementalHoareTripleChecker+Time [2021-08-30 18:01:11,177 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 9 Invalid, 255 Unknown, 0 Unchecked, 2.57ms Time], IncrementalHoareTripleChecker [4 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 448.24ms Time] [2021-08-30 18:01:11,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-08-30 18:01:11,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 134. [2021-08-30 18:01:11,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 94 states have (on average 1.5106382978723405) internal successors, (142), 130 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) [2021-08-30 18:01:11,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 145 transitions. [2021-08-30 18:01:11,182 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 145 transitions. Word has length 14 [2021-08-30 18:01:11,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:01:11,182 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 145 transitions. [2021-08-30 18:01:11,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:01:11,183 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 145 transitions. [2021-08-30 18:01:11,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-30 18:01:11,183 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:01:11,183 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:01:11,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-30 18:01:11,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 18:01:11,389 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-08-30 18:01:11,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:01:11,390 INFO L82 PathProgramCache]: Analyzing trace with hash -52402581, now seen corresponding path program 1 times [2021-08-30 18:01:11,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 18:01:11,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124724391] [2021-08-30 18:01:11,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:01:11,397 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 18:01:11,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 18:01:11,398 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 18:01:11,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-30 18:01:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:01:11,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 18:01:11,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 18:01:11,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:01:11,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 18:01:11,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-08-30 18:01:11,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:01:11,709 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 18:01:11,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124724391] [2021-08-30 18:01:11,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124724391] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 18:01:11,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:01:11,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-08-30 18:01:11,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251416090] [2021-08-30 18:01:11,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 18:01:11,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 18:01:11,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 18:01:11,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-30 18:01:11,711 INFO L87 Difference]: Start difference. First operand 134 states and 145 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:01:12,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:01:12,572 INFO L93 Difference]: Finished difference Result 166 states and 178 transitions. [2021-08-30 18:01:12,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 18:01:12,576 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (2), 1 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 14 [2021-08-30 18:01:12,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:01:12,577 INFO L225 Difference]: With dead ends: 166 [2021-08-30 18:01:12,577 INFO L226 Difference]: Without dead ends: 166 [2021-08-30 18:01:12,577 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 149.63ms TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-08-30 18:01:12,578 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 267 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 669.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.51ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 762.27ms IncrementalHoareTripleChecker+Time [2021-08-30 18:01:12,578 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 15 Invalid, 406 Unknown, 0 Unchecked, 4.51ms Time], IncrementalHoareTripleChecker [31 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 762.27ms Time] [2021-08-30 18:01:12,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-08-30 18:01:12,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 133. [2021-08-30 18:01:12,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 94 states have (on average 1.5) internal successors, (141), 129 states have internal predecessors, (141), 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) [2021-08-30 18:01:12,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 144 transitions. [2021-08-30 18:01:12,588 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 144 transitions. Word has length 14 [2021-08-30 18:01:12,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:01:12,588 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 144 transitions. [2021-08-30 18:01:12,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:01:12,589 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 144 transitions. [2021-08-30 18:01:12,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-30 18:01:12,589 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:01:12,589 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:01:12,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-30 18:01:12,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 18:01:12,793 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr10REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-08-30 18:01:12,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:01:12,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1624480014, now seen corresponding path program 1 times [2021-08-30 18:01:12,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 18:01:12,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73358430] [2021-08-30 18:01:12,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:01:12,794 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 18:01:12,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 18:01:12,794 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 18:01:12,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-30 18:01:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:01:12,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 18:01:12,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 18:01:12,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 18:01:12,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-08-30 18:01:12,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-08-30 18:01:12,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:01:12,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 18:01:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:01:13,000 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 18:01:13,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73358430] [2021-08-30 18:01:13,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73358430] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 18:01:13,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:01:13,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-30 18:01:13,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73946804] [2021-08-30 18:01:13,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 18:01:13,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 18:01:13,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 18:01:13,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 18:01:13,002 INFO L87 Difference]: Start difference. First operand 133 states and 144 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:01:13,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:01:13,623 INFO L93 Difference]: Finished difference Result 132 states and 143 transitions. [2021-08-30 18:01:13,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 18:01:13,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 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 15 [2021-08-30 18:01:13,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:01:13,625 INFO L225 Difference]: With dead ends: 132 [2021-08-30 18:01:13,625 INFO L226 Difference]: Without dead ends: 132 [2021-08-30 18:01:13,625 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 44.01ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-30 18:01:13,625 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 7 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 512.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.66ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 587.99ms IncrementalHoareTripleChecker+Time [2021-08-30 18:01:13,626 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 12 Invalid, 425 Unknown, 0 Unchecked, 2.66ms Time], IncrementalHoareTripleChecker [2 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 587.99ms Time] [2021-08-30 18:01:13,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-08-30 18:01:13,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-08-30 18:01:13,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 94 states have (on average 1.4893617021276595) internal successors, (140), 128 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) [2021-08-30 18:01:13,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 143 transitions. [2021-08-30 18:01:13,629 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 143 transitions. Word has length 15 [2021-08-30 18:01:13,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:01:13,630 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 143 transitions. [2021-08-30 18:01:13,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:01:13,630 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 143 transitions. [2021-08-30 18:01:13,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-30 18:01:13,630 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:01:13,630 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:01:13,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-30 18:01:13,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 18:01:13,843 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-08-30 18:01:13,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:01:13,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1624480013, now seen corresponding path program 1 times [2021-08-30 18:01:13,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 18:01:13,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463793160] [2021-08-30 18:01:13,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:01:13,843 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 18:01:13,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 18:01:13,844 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 18:01:13,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-30 18:01:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:01:13,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-30 18:01:13,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 18:01:13,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 18:01:13,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-08-30 18:01:13,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 18:01:14,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-08-30 18:01:14,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-08-30 18:01:14,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:01:14,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 18:01:14,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:01:14,213 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 18:01:14,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463793160] [2021-08-30 18:01:14,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463793160] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 18:01:14,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:01:14,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-08-30 18:01:14,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51663919] [2021-08-30 18:01:14,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 18:01:14,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 18:01:14,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 18:01:14,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-30 18:01:14,214 INFO L87 Difference]: Start difference. First operand 132 states and 143 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:01:15,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:01:15,801 INFO L93 Difference]: Finished difference Result 131 states and 142 transitions. [2021-08-30 18:01:15,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 18:01:15,802 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (2), 1 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 15 [2021-08-30 18:01:15,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:01:15,803 INFO L225 Difference]: With dead ends: 131 [2021-08-30 18:01:15,803 INFO L226 Difference]: Without dead ends: 131 [2021-08-30 18:01:15,803 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 209.64ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-08-30 18:01:15,803 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1296.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.78ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1479.28ms IncrementalHoareTripleChecker+Time [2021-08-30 18:01:15,803 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 15 Invalid, 532 Unknown, 0 Unchecked, 4.78ms Time], IncrementalHoareTripleChecker [2 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 1479.28ms Time] [2021-08-30 18:01:15,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-08-30 18:01:15,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-08-30 18:01:15,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 94 states have (on average 1.4787234042553192) internal successors, (139), 127 states have internal predecessors, (139), 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) [2021-08-30 18:01:15,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 142 transitions. [2021-08-30 18:01:15,807 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 142 transitions. Word has length 15 [2021-08-30 18:01:15,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:01:15,807 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 142 transitions. [2021-08-30 18:01:15,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:01:15,808 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 142 transitions. [2021-08-30 18:01:15,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-30 18:01:15,808 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:01:15,808 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:01:15,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-08-30 18:01:16,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 18:01:16,009 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr35ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-08-30 18:01:16,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:01:16,010 INFO L82 PathProgramCache]: Analyzing trace with hash 2101662523, now seen corresponding path program 1 times [2021-08-30 18:01:16,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 18:01:16,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682766921] [2021-08-30 18:01:16,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:01:16,010 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 18:01:16,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 18:01:16,011 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 18:01:16,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-08-30 18:01:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:01:16,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-30 18:01:16,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 18:01:16,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-30 18:01:16,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-08-30 18:01:16,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:01:16,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 18:01:16,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:01:16,213 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 18:01:16,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682766921] [2021-08-30 18:01:16,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682766921] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 18:01:16,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:01:16,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-30 18:01:16,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154896409] [2021-08-30 18:01:16,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 18:01:16,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 18:01:16,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 18:01:16,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 18:01:16,214 INFO L87 Difference]: Start difference. First operand 131 states and 142 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:01:17,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:01:17,116 INFO L93 Difference]: Finished difference Result 182 states and 197 transitions. [2021-08-30 18:01:17,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 18:01:17,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 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 [2021-08-30 18:01:17,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:01:17,117 INFO L225 Difference]: With dead ends: 182 [2021-08-30 18:01:17,118 INFO L226 Difference]: Without dead ends: 182 [2021-08-30 18:01:17,118 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.70ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-30 18:01:17,118 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 79 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 742.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.73ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 853.21ms IncrementalHoareTripleChecker+Time [2021-08-30 18:01:17,118 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 12 Invalid, 429 Unknown, 0 Unchecked, 3.73ms Time], IncrementalHoareTripleChecker [8 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 853.21ms Time] [2021-08-30 18:01:17,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-08-30 18:01:17,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 131. [2021-08-30 18:01:17,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 94 states have (on average 1.4680851063829787) internal successors, (138), 127 states have internal predecessors, (138), 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) [2021-08-30 18:01:17,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 141 transitions. [2021-08-30 18:01:17,121 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 141 transitions. Word has length 17 [2021-08-30 18:01:17,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:01:17,122 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 141 transitions. [2021-08-30 18:01:17,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:01:17,122 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 141 transitions. [2021-08-30 18:01:17,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-30 18:01:17,122 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:01:17,123 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:01:17,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-08-30 18:01:17,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 18:01:17,330 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr14REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-08-30 18:01:17,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:01:17,330 INFO L82 PathProgramCache]: Analyzing trace with hash -739626508, now seen corresponding path program 1 times [2021-08-30 18:01:17,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 18:01:17,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856471306] [2021-08-30 18:01:17,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:01:17,331 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 18:01:17,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 18:01:17,332 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 18:01:17,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-08-30 18:01:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:01:17,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-30 18:01:17,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 18:01:17,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 18:01:17,541 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-08-30 18:01:17,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-08-30 18:01:17,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-08-30 18:01:17,766 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-08-30 18:01:17,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 36 [2021-08-30 18:01:17,879 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-08-30 18:01:17,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 47 [2021-08-30 18:01:18,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:01:18,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 18:01:19,742 WARN L838 $PredicateComparison]: unable to prove that (forall ((|main_#t~mem6.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_main_#t~mem6.base| (store (select |c_#memory_$Pointer$.base| |c_main_#t~mem6.base|) (bvadd |main_#t~mem6.offset| (_ bv4 32)) c_main_~end~0.base)) c_main_~end~0.base) c_main_~end~0.offset))))))))) (_ bv1 1)))) is different from false [2021-08-30 18:01:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:01:22,855 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 18:01:22,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856471306] [2021-08-30 18:01:22,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856471306] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 18:01:22,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:01:22,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-08-30 18:01:22,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555479017] [2021-08-30 18:01:22,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 18:01:22,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 18:01:22,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 18:01:22,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=118, Unknown=1, NotChecked=22, Total=182 [2021-08-30 18:01:22,856 INFO L87 Difference]: Start difference. First operand 131 states and 141 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:01:23,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:01:23,719 INFO L93 Difference]: Finished difference Result 160 states and 171 transitions. [2021-08-30 18:01:23,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 18:01:23,720 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 1 states have call successors, (2), 1 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 19 [2021-08-30 18:01:23,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:01:23,720 INFO L225 Difference]: With dead ends: 160 [2021-08-30 18:01:23,721 INFO L226 Difference]: Without dead ends: 160 [2021-08-30 18:01:23,721 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 5100.89ms TimeCoverageRelationStatistics Valid=61, Invalid=182, Unknown=1, NotChecked=28, Total=272 [2021-08-30 18:01:23,721 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 105 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 634.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.85ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 396 IncrementalHoareTripleChecker+Unchecked, 726.12ms IncrementalHoareTripleChecker+Time [2021-08-30 18:01:23,721 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 27 Invalid, 941 Unknown, 0 Unchecked, 3.85ms Time], IncrementalHoareTripleChecker [18 Valid, 527 Invalid, 0 Unknown, 396 Unchecked, 726.12ms Time] [2021-08-30 18:01:23,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-08-30 18:01:23,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 130. [2021-08-30 18:01:23,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 94 states have (on average 1.4574468085106382) internal successors, (137), 126 states have internal predecessors, (137), 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) [2021-08-30 18:01:23,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 140 transitions. [2021-08-30 18:01:23,733 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 140 transitions. Word has length 19 [2021-08-30 18:01:23,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:01:23,733 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 140 transitions. [2021-08-30 18:01:23,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:01:23,733 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 140 transitions. [2021-08-30 18:01:23,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-30 18:01:23,734 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:01:23,734 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 18:01:23,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-08-30 18:01:23,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 18:01:23,941 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr15REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-08-30 18:01:23,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:01:23,942 INFO L82 PathProgramCache]: Analyzing trace with hash -739626507, now seen corresponding path program 1 times [2021-08-30 18:01:23,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 18:01:23,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205237228] [2021-08-30 18:01:23,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:01:23,942 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 18:01:23,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 18:01:23,943 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 18:01:23,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-08-30 18:01:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 18:01:24,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-30 18:01:24,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 18:01:24,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 18:01:24,087 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-30 18:01:24,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-08-30 18:01:24,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 18:01:24,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 18:01:24,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-08-30 18:01:24,217 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-08-30 18:01:24,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 49 [2021-08-30 18:01:24,233 INFO L354 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2021-08-30 18:01:24,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 54 [2021-08-30 18:01:24,318 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-08-30 18:01:24,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 42 [2021-08-30 18:01:24,324 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-08-30 18:01:24,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 19 [2021-08-30 18:01:24,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:01:24,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 18:01:44,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 18:01:44,445 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 18:01:44,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205237228] [2021-08-30 18:01:44,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205237228] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 18:01:44,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 18:01:44,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-08-30 18:01:44,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219474451] [2021-08-30 18:01:44,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-30 18:01:44,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 18:01:44,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-30 18:01:44,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=194, Unknown=3, NotChecked=0, Total=240 [2021-08-30 18:01:44,446 INFO L87 Difference]: Start difference. First operand 130 states and 140 transitions. Second operand has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:01:58,639 WARN L210 SmtUtils]: Spent 10.07s on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2021-08-30 18:02:00,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 18:02:00,730 INFO L93 Difference]: Finished difference Result 180 states and 193 transitions. [2021-08-30 18:02:00,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-30 18:02:00,730 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 1 states have call successors, (2), 1 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 19 [2021-08-30 18:02:00,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 18:02:00,731 INFO L225 Difference]: With dead ends: 180 [2021-08-30 18:02:00,731 INFO L226 Difference]: Without dead ends: 180 [2021-08-30 18:02:00,732 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 33699.04ms TimeCoverageRelationStatistics Valid=265, Invalid=991, Unknown=4, NotChecked=0, Total=1260 [2021-08-30 18:02:00,732 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 192 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2005.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.33ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 253 IncrementalHoareTripleChecker+Unchecked, 2240.35ms IncrementalHoareTripleChecker+Time [2021-08-30 18:02:00,732 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 30 Invalid, 1115 Unknown, 0 Unchecked, 8.33ms Time], IncrementalHoareTripleChecker [48 Valid, 814 Invalid, 0 Unknown, 253 Unchecked, 2240.35ms Time] [2021-08-30 18:02:00,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-08-30 18:02:00,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 124. [2021-08-30 18:02:00,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 93 states have (on average 1.4086021505376345) 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) [2021-08-30 18:02:00,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2021-08-30 18:02:00,735 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 19 [2021-08-30 18:02:00,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 18:02:00,735 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2021-08-30 18:02:00,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 18:02:00,735 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2021-08-30 18:02:00,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-30 18:02:00,736 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 18:02:00,736 INFO L513 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] [2021-08-30 18:02:00,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-08-30 18:02:00,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 18:02:00,941 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr44ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 60 more)] === [2021-08-30 18:02:00,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 18:02:00,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1944702492, now seen corresponding path program 1 times [2021-08-30 18:02:00,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 18:02:00,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418860366] [2021-08-30 18:02:00,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 18:02:00,942 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 18:02:00,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 18:02:00,942 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 18:02:00,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-08-30 18:02:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 18:02:01,019 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-30 18:02:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 18:02:01,065 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-30 18:02:01,065 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-30 18:02:01,066 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr44ASSERT_VIOLATIONMEMORY_LEAK (64 of 65 remaining) [2021-08-30 18:02:01,067 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (63 of 65 remaining) [2021-08-30 18:02:01,067 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (62 of 65 remaining) [2021-08-30 18:02:01,067 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (61 of 65 remaining) [2021-08-30 18:02:01,067 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (60 of 65 remaining) [2021-08-30 18:02:01,067 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (59 of 65 remaining) [2021-08-30 18:02:01,068 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (58 of 65 remaining) [2021-08-30 18:02:01,068 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION (57 of 65 remaining) [2021-08-30 18:02:01,068 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION (56 of 65 remaining) [2021-08-30 18:02:01,068 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION (55 of 65 remaining) [2021-08-30 18:02:01,068 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION (54 of 65 remaining) [2021-08-30 18:02:01,068 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION (53 of 65 remaining) [2021-08-30 18:02:01,068 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION (52 of 65 remaining) [2021-08-30 18:02:01,084 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION (51 of 65 remaining) [2021-08-30 18:02:01,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION (50 of 65 remaining) [2021-08-30 18:02:01,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION (49 of 65 remaining) [2021-08-30 18:02:01,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION (48 of 65 remaining) [2021-08-30 18:02:01,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION (47 of 65 remaining) [2021-08-30 18:02:01,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION (46 of 65 remaining) [2021-08-30 18:02:01,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION (45 of 65 remaining) [2021-08-30 18:02:01,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION (44 of 65 remaining) [2021-08-30 18:02:01,085 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION (43 of 65 remaining) [2021-08-30 18:02:01,086 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION (42 of 65 remaining) [2021-08-30 18:02:01,086 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION (41 of 65 remaining) [2021-08-30 18:02:01,086 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION (40 of 65 remaining) [2021-08-30 18:02:01,086 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION (39 of 65 remaining) [2021-08-30 18:02:01,086 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION (38 of 65 remaining) [2021-08-30 18:02:01,086 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION (37 of 65 remaining) [2021-08-30 18:02:01,086 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION (36 of 65 remaining) [2021-08-30 18:02:01,086 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION (35 of 65 remaining) [2021-08-30 18:02:01,086 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION (34 of 65 remaining) [2021-08-30 18:02:01,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION (33 of 65 remaining) [2021-08-30 18:02:01,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION (32 of 65 remaining) [2021-08-30 18:02:01,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32ASSERT_VIOLATIONMEMORY_LEAK (31 of 65 remaining) [2021-08-30 18:02:01,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION (30 of 65 remaining) [2021-08-30 18:02:01,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34REQUIRES_VIOLATION (29 of 65 remaining) [2021-08-30 18:02:01,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35ASSERT_VIOLATIONMEMORY_LEAK (28 of 65 remaining) [2021-08-30 18:02:01,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION (27 of 65 remaining) [2021-08-30 18:02:01,087 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION (26 of 65 remaining) [2021-08-30 18:02:01,088 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION (25 of 65 remaining) [2021-08-30 18:02:01,088 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION (24 of 65 remaining) [2021-08-30 18:02:01,088 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION (23 of 65 remaining) [2021-08-30 18:02:01,088 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41REQUIRES_VIOLATION (22 of 65 remaining) [2021-08-30 18:02:01,088 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42REQUIRES_VIOLATION (21 of 65 remaining) [2021-08-30 18:02:01,088 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43REQUIRES_VIOLATION (20 of 65 remaining) [2021-08-30 18:02:01,088 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION (19 of 65 remaining) [2021-08-30 18:02:01,088 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46REQUIRES_VIOLATION (18 of 65 remaining) [2021-08-30 18:02:01,088 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47REQUIRES_VIOLATION (17 of 65 remaining) [2021-08-30 18:02:01,089 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48REQUIRES_VIOLATION (16 of 65 remaining) [2021-08-30 18:02:01,089 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION (15 of 65 remaining) [2021-08-30 18:02:01,089 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr50REQUIRES_VIOLATION (14 of 65 remaining) [2021-08-30 18:02:01,089 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51ASSERT_VIOLATIONMEMORY_FREE (13 of 65 remaining) [2021-08-30 18:02:01,089 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52ASSERT_VIOLATIONMEMORY_FREE (12 of 65 remaining) [2021-08-30 18:02:01,089 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53ASSERT_VIOLATIONMEMORY_FREE (11 of 65 remaining) [2021-08-30 18:02:01,089 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54REQUIRES_VIOLATION (10 of 65 remaining) [2021-08-30 18:02:01,089 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr55REQUIRES_VIOLATION (9 of 65 remaining) [2021-08-30 18:02:01,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr56ASSERT_VIOLATIONMEMORY_FREE (8 of 65 remaining) [2021-08-30 18:02:01,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr57ASSERT_VIOLATIONMEMORY_FREE (7 of 65 remaining) [2021-08-30 18:02:01,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr58ASSERT_VIOLATIONMEMORY_FREE (6 of 65 remaining) [2021-08-30 18:02:01,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr59REQUIRES_VIOLATION (5 of 65 remaining) [2021-08-30 18:02:01,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr60REQUIRES_VIOLATION (4 of 65 remaining) [2021-08-30 18:02:01,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr61ASSERT_VIOLATIONMEMORY_FREE (3 of 65 remaining) [2021-08-30 18:02:01,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr62ASSERT_VIOLATIONMEMORY_FREE (2 of 65 remaining) [2021-08-30 18:02:01,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr63ASSERT_VIOLATIONMEMORY_FREE (1 of 65 remaining) [2021-08-30 18:02:01,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr64ENSURES_VIOLATIONMEMORY_LEAK (0 of 65 remaining) [2021-08-30 18:02:01,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-08-30 18:02:01,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 18:02:01,296 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 18:02:01,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 06:02:01 BoogieIcfgContainer [2021-08-30 18:02:01,316 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 18:02:01,317 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 18:02:01,317 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 18:02:01,317 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 18:02:01,317 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:01:04" (3/4) ... [2021-08-30 18:02:01,319 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 18:02:01,319 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 18:02:01,319 INFO L158 Benchmark]: Toolchain (without parser) took 58075.88ms. Allocated memory was 54.5MB in the beginning and 83.9MB in the end (delta: 29.4MB). Free memory was 31.6MB in the beginning and 42.6MB in the end (delta: -11.1MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2021-08-30 18:02:01,319 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory was 36.0MB in the beginning and 35.9MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 18:02:01,319 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.76ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.3MB in the beginning and 42.3MB in the end (delta: -11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-30 18:02:01,320 INFO L158 Benchmark]: Boogie Preprocessor took 65.15ms. Allocated memory is still 67.1MB. Free memory was 42.3MB in the beginning and 39.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 18:02:01,320 INFO L158 Benchmark]: RCFGBuilder took 402.03ms. Allocated memory is still 67.1MB. Free memory was 39.1MB in the beginning and 44.9MB in the end (delta: -5.8MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2021-08-30 18:02:01,320 INFO L158 Benchmark]: TraceAbstraction took 57282.99ms. Allocated memory was 67.1MB in the beginning and 83.9MB in the end (delta: 16.8MB). Free memory was 44.4MB in the beginning and 43.3MB in the end (delta: 1.1MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. [2021-08-30 18:02:01,320 INFO L158 Benchmark]: Witness Printer took 2.36ms. Allocated memory is still 83.9MB. Free memory was 43.3MB in the beginning and 42.6MB in the end (delta: 646.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 18:02:01,321 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory was 36.0MB in the beginning and 35.9MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 319.76ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.3MB in the beginning and 42.3MB in the end (delta: -11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.15ms. Allocated memory is still 67.1MB. Free memory was 42.3MB in the beginning and 39.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 402.03ms. Allocated memory is still 67.1MB. Free memory was 39.1MB in the beginning and 44.9MB in the end (delta: -5.8MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. * TraceAbstraction took 57282.99ms. Allocated memory was 67.1MB in the beginning and 83.9MB in the end (delta: 16.8MB). Free memory was 44.4MB in the beginning and 43.3MB in the end (delta: 1.1MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. * Witness Printer took 2.36ms. Allocated memory is still 83.9MB. Free memory was 43.3MB in the beginning and 42.6MB in the end (delta: 646.4kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1051]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1051. Possible FailurePath: [L1005] SLL* list = malloc(sizeof(SLL)); [L1006] list->next = ((void*)0) VAL [list={1:0}] [L1007] list->prev = ((void*)0) VAL [list={1:0}] [L1008] list->colour = BLACK VAL [list={1:0}] [L1010] SLL* end = list; VAL [end={1:0}, list={1:0}] [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1036] end = ((void*)0) [L1037] end = list VAL [end={1:0}, list={1:0}] [L1040] COND FALSE !(!(((void*)0) != end)) VAL [end={1:0}, list={1:0}] [L1041] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}] [L1041] COND FALSE !(!(BLACK == end->colour)) [L1043] COND TRUE ((void*)0) != end VAL [end={1:0}, list={1:0}] [L1045] EXPR end->colour VAL [end={1:0}, end->colour=1, list={1:0}] [L1045] COND FALSE !(RED == end->colour) [L1051] EXPR end->next VAL [end={1:0}, end->next={0:0}, list={1:0}] [L1051] COND TRUE !(end->next) [L1051] reach_error() VAL [end={1:0}, list={1:0}] - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1006]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1016]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1017]: 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: 1023]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1031]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1040]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1045]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1047]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1048]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1051]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1051]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1052]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1058]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1060]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1061]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1067]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1067]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1068]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1002]: 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 5 procedures, 150 locations, 65 error locations. Started 1 CEGAR loops. OverallTime: 57230.94ms, OverallIterations: 12, TraceHistogramMax: 1, EmptinessCheckTime: 10.86ms, AutomataDifference: 23593.09ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 8.46ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1305 SdHoareTripleChecker+Valid, 8894.52ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1305 mSDsluCounter, 163 SdHoareTripleChecker+Invalid, 7732.94ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1066 IncrementalHoareTripleChecker+Unchecked, 1679 mSDsCounter, 180 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4194 IncrementalHoareTripleChecker+Invalid, 5440 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 180 mSolverCounterUnsat, 34 mSDtfsCounter, 4194 mSolverCounterSat, 41.73ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 331 GetRequests, 226 SyntacticMatches, 9 SemanticMatches, 96 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 41712.59ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=141occurred in iteration=0, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 90.61ms AutomataMinimizationTime, 11 MinimizatonAttempts, 269 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 69.36ms SsaConstructionTime, 267.95ms SatisfiabilityAnalysisTime, 29821.63ms InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 280 ConstructedInterpolants, 20 QuantifiedInterpolants, 2283 SizeOfPredicates, 48 NumberOfNonLiveVariables, 995 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 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 could not prove your program: unable to determine feasibility of some traces [2021-08-30 18:02:01,369 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...