./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0209a5ecd1f90a7dc207e0462366045d25daa538d59f8499c5199765a86166a3 ................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0209a5ecd1f90a7dc207e0462366045d25daa538d59f8499c5199765a86166a3 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:28:13,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:28:13,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:28:13,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:28:13,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:28:13,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:28:13,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:28:13,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:28:13,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:28:13,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:28:13,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:28:13,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:28:13,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:28:13,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:28:13,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:28:13,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:28:13,722 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:28:13,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:28:13,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:28:13,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:28:13,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:28:13,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:28:13,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:28:13,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:28:13,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:28:13,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:28:13,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:28:13,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:28:13,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:28:13,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:28:13,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:28:13,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:28:13,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:28:13,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:28:13,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:28:13,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:28:13,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:28:13,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:28:13,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:28:13,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:28:13,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:28:13,762 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:28:13,803 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:28:13,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:28:13,804 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:28:13,804 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:28:13,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:28:13,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:28:13,806 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:28:13,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:28:13,807 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:28:13,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:28:13,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:28:13,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:28:13,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:28:13,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:28:13,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:28:13,809 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:28:13,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:28:13,810 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:28:13,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:28:13,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:28:13,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:28:13,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:28:13,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:28:13,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:28:13,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:28:13,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:28:13,817 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:28:13,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:28:13,818 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:28:13,820 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:28:13,820 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:28:13,820 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:28:13,820 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0209a5ecd1f90a7dc207e0462366045d25daa538d59f8499c5199765a86166a3 [2021-10-21 20:28:14,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:28:14,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:28:14,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:28:14,106 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:28:14,106 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:28:14,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2021-10-21 20:28:14,194 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/data/47c144b71/1fcb79a9e4a0475ea6178e376bc21411/FLAG45aaccb67 [2021-10-21 20:28:14,773 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:28:14,775 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2021-10-21 20:28:14,796 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/data/47c144b71/1fcb79a9e4a0475ea6178e376bc21411/FLAG45aaccb67 [2021-10-21 20:28:15,033 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/data/47c144b71/1fcb79a9e4a0475ea6178e376bc21411 [2021-10-21 20:28:15,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:28:15,044 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:28:15,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:28:15,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:28:15,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:28:15,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:28:15" (1/1) ... [2021-10-21 20:28:15,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fdfdba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:15, skipping insertion in model container [2021-10-21 20:28:15,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:28:15" (1/1) ... [2021-10-21 20:28:15,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:28:15,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:28:15,470 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2021-10-21 20:28:15,476 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2021-10-21 20:28:15,478 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2021-10-21 20:28:15,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:28:15,501 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:28:15,554 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2021-10-21 20:28:15,555 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2021-10-21 20:28:15,557 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2021-10-21 20:28:15,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:28:15,588 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:28:15,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:15 WrapperNode [2021-10-21 20:28:15,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:28:15,590 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:28:15,590 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:28:15,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:28:15,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:15" (1/1) ... [2021-10-21 20:28:15,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:15" (1/1) ... [2021-10-21 20:28:15,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:28:15,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:28:15,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:28:15,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:28:15,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:15" (1/1) ... [2021-10-21 20:28:15,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:15" (1/1) ... [2021-10-21 20:28:15,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:15" (1/1) ... [2021-10-21 20:28:15,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:15" (1/1) ... [2021-10-21 20:28:15,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:15" (1/1) ... [2021-10-21 20:28:15,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:15" (1/1) ... [2021-10-21 20:28:15,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:15" (1/1) ... [2021-10-21 20:28:15,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:28:15,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:28:15,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:28:15,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:28:15,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:15" (1/1) ... [2021-10-21 20:28:15,699 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:28:15,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:28:15,724 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:28:15,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:28:15,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 20:28:15,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 20:28:15,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 20:28:15,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 20:28:15,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:28:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 20:28:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:28:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:28:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:28:15,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:28:16,273 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:28:16,274 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-21 20:28:16,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:28:16 BoogieIcfgContainer [2021-10-21 20:28:16,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:28:16,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:28:16,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:28:16,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:28:16,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:28:15" (1/3) ... [2021-10-21 20:28:16,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67dee3e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:28:16, skipping insertion in model container [2021-10-21 20:28:16,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:15" (2/3) ... [2021-10-21 20:28:16,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67dee3e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:28:16, skipping insertion in model container [2021-10-21 20:28:16,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:28:16" (3/3) ... [2021-10-21 20:28:16,284 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2021-10-21 20:28:16,290 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:28:16,290 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-21 20:28:16,339 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:28:16,345 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-10-21 20:28:16,345 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-21 20:28:16,359 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 25 states have (on average 1.84) internal successors, (46), 28 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:16,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 20:28:16,364 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:28:16,365 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:28:16,365 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:28:16,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:28:16,371 INFO L82 PathProgramCache]: Analyzing trace with hash 889968582, now seen corresponding path program 1 times [2021-10-21 20:28:16,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:28:16,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260719236] [2021-10-21 20:28:16,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:16,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:28:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:16,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:28:16,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:28:16,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260719236] [2021-10-21 20:28:16,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260719236] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:28:16,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:28:16,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:28:16,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118515066] [2021-10-21 20:28:16,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:28:16,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:28:16,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:28:16,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:28:16,573 INFO L87 Difference]: Start difference. First operand has 29 states, 25 states have (on average 1.84) internal successors, (46), 28 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:16,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:28:16,585 INFO L93 Difference]: Finished difference Result 53 states and 84 transitions. [2021-10-21 20:28:16,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:28:16,586 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-21 20:28:16,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:28:16,594 INFO L225 Difference]: With dead ends: 53 [2021-10-21 20:28:16,594 INFO L226 Difference]: Without dead ends: 23 [2021-10-21 20:28:16,596 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:28:16,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-21 20:28:16,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-21 20:28:16,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.3) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:16,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-10-21 20:28:16,652 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 6 [2021-10-21 20:28:16,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:28:16,653 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-10-21 20:28:16,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:16,653 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-10-21 20:28:16,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 20:28:16,654 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:28:16,654 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:28:16,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:28:16,655 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:28:16,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:28:16,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1806853233, now seen corresponding path program 1 times [2021-10-21 20:28:16,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:28:16,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921980481] [2021-10-21 20:28:16,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:16,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:28:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:16,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:28:16,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:28:16,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921980481] [2021-10-21 20:28:16,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921980481] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:28:16,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:28:16,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:28:16,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870230695] [2021-10-21 20:28:16,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:28:16,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:28:16,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:28:16,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:28:16,750 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:16,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:28:16,815 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-10-21 20:28:16,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:28:16,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-21 20:28:16,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:28:16,816 INFO L225 Difference]: With dead ends: 31 [2021-10-21 20:28:16,817 INFO L226 Difference]: Without dead ends: 29 [2021-10-21 20:28:16,817 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:28:16,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-21 20:28:16,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2021-10-21 20:28:16,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:16,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-10-21 20:28:16,822 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 7 [2021-10-21 20:28:16,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:28:16,822 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-10-21 20:28:16,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:16,823 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-10-21 20:28:16,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 20:28:16,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:28:16,824 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:28:16,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:28:16,824 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:28:16,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:28:16,825 INFO L82 PathProgramCache]: Analyzing trace with hash -856511048, now seen corresponding path program 1 times [2021-10-21 20:28:16,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:28:16,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946406591] [2021-10-21 20:28:16,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:16,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:28:16,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:16,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:28:16,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:28:16,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946406591] [2021-10-21 20:28:16,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946406591] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:28:16,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:28:16,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:28:16,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066495407] [2021-10-21 20:28:16,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:28:16,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:28:16,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:28:16,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:28:16,947 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:17,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:28:17,085 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2021-10-21 20:28:17,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:28:17,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-21 20:28:17,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:28:17,088 INFO L225 Difference]: With dead ends: 47 [2021-10-21 20:28:17,089 INFO L226 Difference]: Without dead ends: 45 [2021-10-21 20:28:17,090 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:28:17,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-21 20:28:17,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2021-10-21 20:28:17,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:17,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-10-21 20:28:17,110 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 10 [2021-10-21 20:28:17,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:28:17,110 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-10-21 20:28:17,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:17,111 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-10-21 20:28:17,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 20:28:17,113 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:28:17,113 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:28:17,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 20:28:17,114 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:28:17,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:28:17,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1594081566, now seen corresponding path program 1 times [2021-10-21 20:28:17,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:28:17,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36399077] [2021-10-21 20:28:17,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:17,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:28:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:28:17,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:28:17,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36399077] [2021-10-21 20:28:17,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36399077] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:28:17,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102494149] [2021-10-21 20:28:17,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:17,419 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:28:17,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:28:17,421 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:28:17,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 20:28:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:17,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-21 20:28:17,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:28:17,606 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 [2021-10-21 20:28:17,617 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 [2021-10-21 20:28:17,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:17,824 INFO L354 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2021-10-21 20:28:17,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 78 [2021-10-21 20:28:17,862 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-10-21 20:28:17,862 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 68 treesize of output 56 [2021-10-21 20:28:17,887 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-10-21 20:28:17,888 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 53 treesize of output 57 [2021-10-21 20:28:18,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-10-21 20:28:18,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:28:18,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-21 20:28:18,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814680075] [2021-10-21 20:28:18,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:28:18,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:28:18,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:28:18,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-21 20:28:18,051 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:18,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:28:18,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:28:18,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-10-21 20:28:18,270 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@2f0207f7 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:356) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:204) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:61) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:63) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:864) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:778) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-21 20:28:18,273 INFO L168 Benchmark]: Toolchain (without parser) took 3228.01 ms. Allocated memory was 115.3 MB in the beginning and 155.2 MB in the end (delta: 39.8 MB). Free memory was 74.1 MB in the beginning and 121.5 MB in the end (delta: -47.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:28:18,273 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 115.3 MB. Free memory is still 91.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:28:18,274 INFO L168 Benchmark]: CACSL2BoogieTranslator took 543.41 ms. Allocated memory is still 115.3 MB. Free memory was 73.9 MB in the beginning and 82.5 MB in the end (delta: -8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:28:18,274 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.21 ms. Allocated memory is still 115.3 MB. Free memory was 82.5 MB in the beginning and 80.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:28:18,275 INFO L168 Benchmark]: Boogie Preprocessor took 47.88 ms. Allocated memory is still 115.3 MB. Free memory was 80.9 MB in the beginning and 78.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:28:18,275 INFO L168 Benchmark]: RCFGBuilder took 592.51 ms. Allocated memory is still 115.3 MB. Free memory was 78.7 MB in the beginning and 63.3 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:28:18,276 INFO L168 Benchmark]: TraceAbstraction took 1994.19 ms. Allocated memory was 115.3 MB in the beginning and 155.2 MB in the end (delta: 39.8 MB). Free memory was 62.4 MB in the beginning and 121.5 MB in the end (delta: -59.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:28:18,279 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 115.3 MB. Free memory is still 91.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 543.41 ms. Allocated memory is still 115.3 MB. Free memory was 73.9 MB in the beginning and 82.5 MB in the end (delta: -8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.21 ms. Allocated memory is still 115.3 MB. Free memory was 82.5 MB in the beginning and 80.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.88 ms. Allocated memory is still 115.3 MB. Free memory was 80.9 MB in the beginning and 78.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 592.51 ms. Allocated memory is still 115.3 MB. Free memory was 78.7 MB in the beginning and 63.3 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1994.19 ms. Allocated memory was 115.3 MB in the beginning and 155.2 MB in the end (delta: 39.8 MB). Free memory was 62.4 MB in the beginning and 121.5 MB in the end (delta: -59.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@2f0207f7 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@2f0207f7: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-21 20:28:18,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/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-dev-e943c26 [2021-10-21 20:28:20,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:28:20,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:28:20,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:28:20,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:28:20,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:28:20,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:28:20,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:28:20,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:28:20,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:28:20,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:28:20,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:28:20,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:28:20,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:28:20,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:28:20,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:28:20,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:28:20,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:28:20,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:28:20,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:28:20,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:28:20,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:28:20,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:28:20,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:28:20,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:28:20,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:28:20,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:28:20,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:28:20,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:28:20,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:28:20,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:28:20,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:28:20,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:28:20,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:28:20,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:28:20,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:28:20,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:28:20,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:28:20,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:28:20,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:28:20,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:28:20,915 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-21 20:28:20,954 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:28:20,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:28:20,955 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:28:20,955 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:28:20,957 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:28:20,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:28:20,957 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:28:20,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:28:20,958 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:28:20,958 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:28:20,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:28:20,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:28:20,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:28:20,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:28:20,960 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-21 20:28:20,960 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-21 20:28:20,961 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:28:20,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:28:20,961 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:28:20,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:28:20,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:28:20,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:28:20,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:28:20,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:28:20,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:28:20,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:28:20,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:28:20,963 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-21 20:28:20,964 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-21 20:28:20,964 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:28:20,964 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:28:20,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:28:20,965 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:28:20,965 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-21 20:28:20,965 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0209a5ecd1f90a7dc207e0462366045d25daa538d59f8499c5199765a86166a3 [2021-10-21 20:28:21,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:28:21,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:28:21,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:28:21,341 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:28:21,342 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:28:21,343 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2021-10-21 20:28:21,411 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/data/58f189525/9db146f294214ee7b15b08dbdd281fc2/FLAG3225382ca [2021-10-21 20:28:21,936 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:28:21,937 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i [2021-10-21 20:28:21,963 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/data/58f189525/9db146f294214ee7b15b08dbdd281fc2/FLAG3225382ca [2021-10-21 20:28:22,283 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/data/58f189525/9db146f294214ee7b15b08dbdd281fc2 [2021-10-21 20:28:22,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:28:22,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:28:22,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:28:22,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:28:22,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:28:22,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:28:22" (1/1) ... [2021-10-21 20:28:22,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ddf2ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:22, skipping insertion in model container [2021-10-21 20:28:22,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:28:22" (1/1) ... [2021-10-21 20:28:22,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:28:22,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:28:22,728 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2021-10-21 20:28:22,736 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2021-10-21 20:28:22,739 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2021-10-21 20:28:22,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:28:22,765 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:28:22,828 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22575,22588] [2021-10-21 20:28:22,829 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22647,22660] [2021-10-21 20:28:22,831 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/sv-benchmarks/c/forester-heap/dll-rb-cnstr_1-2.i[22815,22828] [2021-10-21 20:28:22,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:28:22,867 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:28:22,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:22 WrapperNode [2021-10-21 20:28:22,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:28:22,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:28:22,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:28:22,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:28:22,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:22" (1/1) ... [2021-10-21 20:28:22,894 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:22" (1/1) ... [2021-10-21 20:28:22,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:28:22,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:28:22,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:28:22,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:28:22,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:22" (1/1) ... [2021-10-21 20:28:22,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:22" (1/1) ... [2021-10-21 20:28:22,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:22" (1/1) ... [2021-10-21 20:28:22,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:22" (1/1) ... [2021-10-21 20:28:22,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:22" (1/1) ... [2021-10-21 20:28:22,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:22" (1/1) ... [2021-10-21 20:28:22,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:22" (1/1) ... [2021-10-21 20:28:22,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:28:22,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:28:22,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:28:22,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:28:22,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:22" (1/1) ... [2021-10-21 20:28:22,983 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:28:22,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:28:23,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:28:23,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:28:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-21 20:28:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-21 20:28:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-21 20:28:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:28:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-21 20:28:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:28:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-21 20:28:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-21 20:28:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:28:23,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:28:23,948 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:28:23,948 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-21 20:28:23,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:28:23 BoogieIcfgContainer [2021-10-21 20:28:23,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:28:23,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:28:23,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:28:23,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:28:23,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:28:22" (1/3) ... [2021-10-21 20:28:23,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287c5c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:28:23, skipping insertion in model container [2021-10-21 20:28:23,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:28:22" (2/3) ... [2021-10-21 20:28:23,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287c5c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:28:23, skipping insertion in model container [2021-10-21 20:28:23,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:28:23" (3/3) ... [2021-10-21 20:28:23,963 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2021-10-21 20:28:23,968 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:28:23,968 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-21 20:28:24,011 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:28:24,017 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-10-21 20:28:24,017 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-21 20:28:24,033 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 24 states have (on average 1.875) internal successors, (45), 27 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:24,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 20:28:24,038 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:28:24,038 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:28:24,039 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:28:24,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:28:24,045 INFO L82 PathProgramCache]: Analyzing trace with hash 889937798, now seen corresponding path program 1 times [2021-10-21 20:28:24,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:28:24,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736897460] [2021-10-21 20:28:24,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:24,058 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:28:24,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:28:24,061 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:28:24,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-21 20:28:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:24,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-21 20:28:24,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:28:24,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:28:24,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:28:24,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:28:24,208 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:28:24,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736897460] [2021-10-21 20:28:24,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [736897460] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:28:24,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:28:24,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-21 20:28:24,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745755107] [2021-10-21 20:28:24,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:28:24,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:28:24,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:28:24,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:28:24,230 INFO L87 Difference]: Start difference. First operand has 28 states, 24 states have (on average 1.875) internal successors, (45), 27 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:24,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:28:24,245 INFO L93 Difference]: Finished difference Result 52 states and 83 transitions. [2021-10-21 20:28:24,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:28:24,246 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-21 20:28:24,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:28:24,253 INFO L225 Difference]: With dead ends: 52 [2021-10-21 20:28:24,253 INFO L226 Difference]: Without dead ends: 22 [2021-10-21 20:28:24,256 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:28:24,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-21 20:28:24,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-21 20:28:24,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:24,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-10-21 20:28:24,284 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 6 [2021-10-21 20:28:24,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:28:24,285 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-10-21 20:28:24,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:24,285 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-10-21 20:28:24,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 20:28:24,286 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:28:24,286 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 20:28:24,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:28:24,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:28:24,499 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:28:24,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:28:24,500 INFO L82 PathProgramCache]: Analyzing trace with hash 889639888, now seen corresponding path program 1 times [2021-10-21 20:28:24,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:28:24,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977294911] [2021-10-21 20:28:24,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:24,501 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:28:24,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:28:24,502 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:28:24,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-21 20:28:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:24,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 20:28:24,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:28:24,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:28:24,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:28:24,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:28:24,724 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:28:24,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977294911] [2021-10-21 20:28:24,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977294911] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:28:24,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:28:24,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-21 20:28:24,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237520226] [2021-10-21 20:28:24,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:28:24,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:28:24,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:28:24,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:28:24,731 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:25,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:28:25,138 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-10-21 20:28:25,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 20:28:25,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-21 20:28:25,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:28:25,140 INFO L225 Difference]: With dead ends: 30 [2021-10-21 20:28:25,140 INFO L226 Difference]: Without dead ends: 28 [2021-10-21 20:28:25,141 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:28:25,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-21 20:28:25,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 20. [2021-10-21 20:28:25,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:25,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-10-21 20:28:25,146 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 6 [2021-10-21 20:28:25,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:28:25,146 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-10-21 20:28:25,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:25,146 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-10-21 20:28:25,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-21 20:28:25,147 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:28:25,147 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:28:25,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:28:25,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:28:25,359 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:28:25,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:28:25,360 INFO L82 PathProgramCache]: Analyzing trace with hash -977335784, now seen corresponding path program 1 times [2021-10-21 20:28:25,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:28:25,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979293275] [2021-10-21 20:28:25,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:25,361 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:28:25,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:28:25,362 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:28:25,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-21 20:28:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:25,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:28:25,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:28:25,466 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 [2021-10-21 20:28:25,543 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 [2021-10-21 20:28:25,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:28:25,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-21 20:28:25,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:28:25,606 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:28:25,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979293275] [2021-10-21 20:28:25,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979293275] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-21 20:28:25,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:28:25,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-21 20:28:25,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119302795] [2021-10-21 20:28:25,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 20:28:25,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-21 20:28:25,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 20:28:25,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:28:25,612 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:26,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:28:26,210 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2021-10-21 20:28:26,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:28:26,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-21 20:28:26,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:28:26,213 INFO L225 Difference]: With dead ends: 45 [2021-10-21 20:28:26,213 INFO L226 Difference]: Without dead ends: 43 [2021-10-21 20:28:26,213 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:28:26,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-21 20:28:26,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 26. [2021-10-21 20:28:26,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:26,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-10-21 20:28:26,219 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 9 [2021-10-21 20:28:26,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:28:26,220 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-10-21 20:28:26,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:28:26,220 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-10-21 20:28:26,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 20:28:26,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:28:26,221 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:28:26,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:28:26,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 [2021-10-21 20:28:26,422 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:28:26,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:28:26,422 INFO L82 PathProgramCache]: Analyzing trace with hash -822388269, now seen corresponding path program 1 times [2021-10-21 20:28:26,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-21 20:28:26,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721134784] [2021-10-21 20:28:26,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:26,424 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-21 20:28:26,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/mathsat [2021-10-21 20:28:26,426 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-21 20:28:26,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-21 20:28:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:26,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-21 20:28:26,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:28:26,638 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 [2021-10-21 20:28:26,656 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 [2021-10-21 20:28:26,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:26,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:26,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-21 20:28:26,889 INFO L354 Elim1Store]: treesize reduction 78, result has 26.4 percent of original size [2021-10-21 20:28:26,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 51 [2021-10-21 20:28:26,924 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-21 20:28:26,924 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 41 treesize of output 48 [2021-10-21 20:28:27,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-21 20:28:27,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721134784] [2021-10-21 20:28:27,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-10-21 20:28:27,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1607925152] [2021-10-21 20:28:27,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:27,105 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-21 20:28:27,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/cvc4 [2021-10-21 20:28:27,113 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-21 20:28:27,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-21 20:28:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:27,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-21 20:28:27,295 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@622345b7 [2021-10-21 20:28:27,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484711093] [2021-10-21 20:28:27,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:28:27,296 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:28:27,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:28:27,303 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:28:27,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 20:28:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:28:27,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-21 20:28:27,411 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@622345b7 [2021-10-21 20:28:27,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:28:27,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-21 20:28:27,412 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-21 20:28:27,412 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-21 20:28:27,418 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:28:27,420 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:28:27,420 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:28:27,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:28:27,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:28:27,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:28:28,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:28:28,039 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:28:28,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:28:28 BoogieIcfgContainer [2021-10-21 20:28:28,055 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:28:28,055 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:28:28,055 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:28:28,056 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:28:28,056 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:28:23" (3/4) ... [2021-10-21 20:28:28,059 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:28:28,059 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:28:28,061 INFO L168 Benchmark]: Toolchain (without parser) took 5771.83 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 30.1 MB in the beginning and 55.9 MB in the end (delta: -25.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:28:28,061 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 54.5 MB. Free memory is still 36.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:28:28,062 INFO L168 Benchmark]: CACSL2BoogieTranslator took 577.17 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 29.9 MB in the beginning and 50.7 MB in the end (delta: -20.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:28:28,062 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.45 ms. Allocated memory is still 75.5 MB. Free memory was 50.7 MB in the beginning and 48.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:28:28,063 INFO L168 Benchmark]: Boogie Preprocessor took 54.46 ms. Allocated memory is still 75.5 MB. Free memory was 48.6 MB in the beginning and 46.8 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:28:28,064 INFO L168 Benchmark]: RCFGBuilder took 975.80 ms. Allocated memory is still 75.5 MB. Free memory was 46.7 MB in the beginning and 48.7 MB in the end (delta: -1.9 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:28:28,064 INFO L168 Benchmark]: TraceAbstraction took 4103.14 ms. Allocated memory is still 75.5 MB. Free memory was 48.3 MB in the beginning and 55.9 MB in the end (delta: -7.7 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:28:28,065 INFO L168 Benchmark]: Witness Printer took 4.23 ms. Allocated memory is still 75.5 MB. Free memory was 55.9 MB in the beginning and 55.9 MB in the end (delta: 2.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:28:28,068 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 54.5 MB. Free memory is still 36.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 577.17 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 29.9 MB in the beginning and 50.7 MB in the end (delta: -20.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.45 ms. Allocated memory is still 75.5 MB. Free memory was 50.7 MB in the beginning and 48.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.46 ms. Allocated memory is still 75.5 MB. Free memory was 48.6 MB in the beginning and 46.8 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 975.80 ms. Allocated memory is still 75.5 MB. Free memory was 46.7 MB in the beginning and 48.7 MB in the end (delta: -1.9 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4103.14 ms. Allocated memory is still 75.5 MB. Free memory was 48.3 MB in the beginning and 55.9 MB in the end (delta: -7.7 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.23 ms. Allocated memory is still 75.5 MB. Free memory was 55.9 MB in the beginning and 55.9 MB in the end (delta: 2.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1041]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L1005] SLL* list = malloc(sizeof(SLL)); [L1006] list->next = ((void*)0) [L1007] list->prev = ((void*)0) [L1008] list->colour = BLACK [L1010] SLL* end = list; [L1013] COND TRUE __VERIFIER_nondet_int() [L1016] end->next = malloc(sizeof(SLL)) [L1017] EXPR end->next [L1017] end->next->prev = end [L1018] EXPR end->next [L1018] end = end->next [L1019] end->next = ((void*)0) [L1021] COND FALSE !(__VERIFIER_nondet_int()) [L1027] end->colour = RED [L1028] end->next = malloc(sizeof(SLL)) [L1029] EXPR end->next [L1029] end->next->prev = end [L1030] EXPR end->next [L1030] end = end->next [L1031] end->next = ((void*)0) [L1032] end->colour = BLACK [L1013] COND FALSE !(__VERIFIER_nondet_int()) [L1036] end = ((void*)0) [L1037] end = list [L1040] COND FALSE !(!(((void*)0) != end)) [L1041] EXPR end->colour [L1041] COND TRUE !(BLACK == end->colour) [L1041] reach_error() - UnprovableResult [Line: 1040]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1051]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 4029.1ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 9.5ms, AutomataDifference: 1058.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 72 SDtfs, 61 SDslu, 51 SDs, 0 SdLazy, 53 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 884.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 89.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 25.5ms AutomataMinimizationTime, 3 MinimizatonAttempts, 25 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 36.5ms SsaConstructionTime, 69.6ms SatisfiabilityAnalysisTime, 367.7ms InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 138 SizeOfPredicates, 6 NumberOfNonLiveVariables, 113 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 [2021-10-21 20:28:28,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_509f7031-7159-4b45-aaf5-19d8c5842e49/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...