./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/verifythis/elimination_max_rec.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_bbf671e2-8f56-49b2-996c-0d8fe9f5be55/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bbf671e2-8f56-49b2-996c-0d8fe9f5be55/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bbf671e2-8f56-49b2-996c-0d8fe9f5be55/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bbf671e2-8f56-49b2-996c-0d8fe9f5be55/bin/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/verifythis/elimination_max_rec.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bbf671e2-8f56-49b2-996c-0d8fe9f5be55/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bbf671e2-8f56-49b2-996c-0d8fe9f5be55/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7862960b0aa057ac19174563f251d134d1269c2b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 17:48:25,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 17:48:25,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 17:48:25,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 17:48:25,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 17:48:25,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 17:48:25,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 17:48:25,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 17:48:25,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 17:48:25,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 17:48:25,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 17:48:25,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 17:48:25,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 17:48:25,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 17:48:25,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 17:48:25,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 17:48:25,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 17:48:25,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 17:48:25,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 17:48:25,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 17:48:25,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 17:48:25,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 17:48:25,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 17:48:25,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 17:48:26,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 17:48:26,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 17:48:26,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 17:48:26,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 17:48:26,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 17:48:26,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 17:48:26,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 17:48:26,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 17:48:26,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 17:48:26,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 17:48:26,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 17:48:26,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 17:48:26,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 17:48:26,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 17:48:26,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 17:48:26,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 17:48:26,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 17:48:26,024 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bbf671e2-8f56-49b2-996c-0d8fe9f5be55/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2020-12-01 17:48:26,072 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 17:48:26,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 17:48:26,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 17:48:26,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 17:48:26,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 17:48:26,075 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 17:48:26,076 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 17:48:26,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 17:48:26,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 17:48:26,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 17:48:26,077 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-01 17:48:26,078 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-01 17:48:26,078 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-01 17:48:26,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 17:48:26,078 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 17:48:26,079 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 17:48:26,079 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 17:48:26,079 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 17:48:26,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 17:48:26,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 17:48:26,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 17:48:26,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 17:48:26,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 17:48:26,088 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 17:48:26,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 17:48:26,089 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-vcloud-master/worker/run_dir_bbf671e2-8f56-49b2-996c-0d8fe9f5be55/bin/ukojak/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bbf671e2-8f56-49b2-996c-0d8fe9f5be55/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7862960b0aa057ac19174563f251d134d1269c2b [2020-12-01 17:48:26,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 17:48:26,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 17:48:26,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 17:48:26,392 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 17:48:26,393 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 17:48:26,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bbf671e2-8f56-49b2-996c-0d8fe9f5be55/bin/ukojak/../../sv-benchmarks/c/verifythis/elimination_max_rec.c [2020-12-01 17:48:26,489 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bbf671e2-8f56-49b2-996c-0d8fe9f5be55/bin/ukojak/data/7276c1779/893aec38fa1c44479e60c690599dc46f/FLAG6b2e31c54 [2020-12-01 17:48:27,008 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 17:48:27,013 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bbf671e2-8f56-49b2-996c-0d8fe9f5be55/sv-benchmarks/c/verifythis/elimination_max_rec.c [2020-12-01 17:48:27,022 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bbf671e2-8f56-49b2-996c-0d8fe9f5be55/bin/ukojak/data/7276c1779/893aec38fa1c44479e60c690599dc46f/FLAG6b2e31c54 [2020-12-01 17:48:27,362 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bbf671e2-8f56-49b2-996c-0d8fe9f5be55/bin/ukojak/data/7276c1779/893aec38fa1c44479e60c690599dc46f [2020-12-01 17:48:27,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 17:48:27,367 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 17:48:27,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 17:48:27,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 17:48:27,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 17:48:27,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:48:27" (1/1) ... [2020-12-01 17:48:27,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bb1ae57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:48:27, skipping insertion in model container [2020-12-01 17:48:27,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:48:27" (1/1) ... [2020-12-01 17:48:27,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 17:48:27,398 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 17:48:27,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:48:27,647 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 17:48:27,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:48:27,718 INFO L208 MainTranslator]: Completed translation [2020-12-01 17:48:27,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:48:27 WrapperNode [2020-12-01 17:48:27,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 17:48:27,720 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 17:48:27,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 17:48:27,721 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 17:48:27,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:48:27" (1/1) ... [2020-12-01 17:48:27,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:48:27" (1/1) ... [2020-12-01 17:48:27,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 17:48:27,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 17:48:27,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 17:48:27,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 17:48:27,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:48:27" (1/1) ... [2020-12-01 17:48:27,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:48:27" (1/1) ... [2020-12-01 17:48:27,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:48:27" (1/1) ... [2020-12-01 17:48:27,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:48:27" (1/1) ... [2020-12-01 17:48:27,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:48:27" (1/1) ... [2020-12-01 17:48:27,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:48:27" (1/1) ... [2020-12-01 17:48:27,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:48:27" (1/1) ... [2020-12-01 17:48:27,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 17:48:27,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 17:48:27,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 17:48:27,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 17:48:27,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:48:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bbf671e2-8f56-49b2-996c-0d8fe9f5be55/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 17:48:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 17:48:27,906 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-12-01 17:48:27,906 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-12-01 17:48:27,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 17:48:27,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 17:48:27,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 17:48:27,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 17:48:27,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 17:48:27,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 17:48:28,549 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 17:48:28,552 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-01 17:48:28,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:48:28 BoogieIcfgContainer [2020-12-01 17:48:28,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 17:48:28,588 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 17:48:28,589 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 17:48:28,600 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 17:48:28,601 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:48:28" (1/1) ... [2020-12-01 17:48:28,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 17:48:28,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:48:28,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 38 states and 41 transitions. [2020-12-01 17:48:28,654 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-12-01 17:48:28,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 17:48:28,659 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:48:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:48:28,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:48:28,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:48:28,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 41 states and 45 transitions. [2020-12-01 17:48:28,964 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-12-01 17:48:28,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 17:48:28,965 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:48:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:48:29,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:48:29,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:48:29,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 46 states and 53 transitions. [2020-12-01 17:48:29,538 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2020-12-01 17:48:29,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 17:48:29,538 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:48:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:48:29,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:48:31,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:48:31,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 51 states and 61 transitions. [2020-12-01 17:48:31,311 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-12-01 17:48:31,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 17:48:31,313 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:48:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:48:31,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:48:31,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:48:31,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 50 states and 60 transitions. [2020-12-01 17:48:31,498 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-12-01 17:48:31,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 17:48:31,499 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:48:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:48:31,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:48:31,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:48:31,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 49 states and 59 transitions. [2020-12-01 17:48:31,567 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2020-12-01 17:48:31,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 17:48:31,568 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:48:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:48:31,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:48:32,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:48:32,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 53 states and 64 transitions. [2020-12-01 17:48:32,873 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2020-12-01 17:48:32,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 17:48:32,874 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:48:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:48:32,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:48:33,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:48:33,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 52 states and 63 transitions. [2020-12-01 17:48:33,472 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2020-12-01 17:48:33,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 17:48:33,474 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:48:33,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:48:33,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:48:33,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:48:33,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 51 states and 62 transitions. [2020-12-01 17:48:33,898 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2020-12-01 17:48:33,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 17:48:33,899 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:48:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:48:34,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:48:35,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:48:35,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 50 states and 61 transitions. [2020-12-01 17:48:35,637 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2020-12-01 17:48:35,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 17:48:35,639 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:48:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:48:36,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:48:39,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:48:39,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 59 states and 76 transitions. [2020-12-01 17:48:39,449 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 76 transitions. [2020-12-01 17:48:39,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 17:48:39,473 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:48:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:48:39,518 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:48:40,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:48:40,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 59 states and 75 transitions. [2020-12-01 17:48:40,243 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2020-12-01 17:48:40,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 17:48:40,244 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:48:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:48:41,039 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:48:43,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:48:43,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 65 states and 86 transitions. [2020-12-01 17:48:43,570 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 86 transitions. [2020-12-01 17:48:43,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 17:48:43,571 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:48:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:48:43,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 17:48:43,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:48:43,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 67 states and 89 transitions. [2020-12-01 17:48:43,617 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 89 transitions. [2020-12-01 17:48:43,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 17:48:43,618 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:48:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:48:44,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:48:47,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:48:47,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 70 states and 98 transitions. [2020-12-01 17:48:47,334 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2020-12-01 17:48:47,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 17:48:47,335 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:48:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:48:47,521 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:48:48,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:48:48,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 73 states and 101 transitions. [2020-12-01 17:48:48,648 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2020-12-01 17:48:48,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 17:48:48,649 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:48:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:48:48,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 17:48:48,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:48:48,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 72 states and 100 transitions. [2020-12-01 17:48:48,700 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 100 transitions. [2020-12-01 17:48:48,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 17:48:48,701 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:48:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:48:50,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:48:54,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:48:54,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 78 states and 130 transitions. [2020-12-01 17:48:54,917 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 130 transitions. [2020-12-01 17:48:54,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 17:48:54,918 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:48:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:48:55,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:49:03,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:49:03,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 88 states and 153 transitions. [2020-12-01 17:49:03,667 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 153 transitions. [2020-12-01 17:49:03,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-01 17:49:03,668 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:49:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:49:05,815 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:49:13,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:49:13,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 94 states and 168 transitions. [2020-12-01 17:49:13,202 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 168 transitions. [2020-12-01 17:49:13,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-01 17:49:13,203 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:49:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:49:14,852 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:49:20,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:49:20,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 97 states and 185 transitions. [2020-12-01 17:49:20,768 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 185 transitions. [2020-12-01 17:49:20,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 17:49:20,769 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:49:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:49:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 17:49:35,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:49:35,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 100 states and 201 transitions. [2020-12-01 17:49:35,241 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 201 transitions. [2020-12-01 17:49:35,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 17:49:35,243 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:49:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:49:35,278 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-01 17:49:44,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:49:44,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 42 states and 54 transitions. [2020-12-01 17:49:44,071 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2020-12-01 17:49:44,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-01 17:49:44,072 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:49:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:49:50,406 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 17:50:12,577 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-12-01 17:50:29,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:50:29,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 49 states and 72 transitions. [2020-12-01 17:50:29,876 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 72 transitions. [2020-12-01 17:50:29,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-01 17:50:29,878 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:50:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:50:41,605 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 11 proven. 83 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-01 17:50:57,246 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-01 17:51:00,493 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2020-12-01 17:51:05,066 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2020-12-01 17:51:05,870 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2020-12-01 17:51:06,678 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2020-12-01 17:51:07,505 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2020-12-01 17:51:09,094 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2020-12-01 17:51:10,652 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-12-01 17:51:14,504 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2020-12-01 17:51:15,856 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2020-12-01 17:51:16,248 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-01 17:51:17,658 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-01 17:51:18,258 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-12-01 17:51:22,760 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-12-01 17:51:24,556 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-12-01 17:51:27,735 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-12-01 17:51:28,446 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-12-01 17:51:33,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:51:33,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 51 states and 76 transitions. [2020-12-01 17:51:33,865 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 76 transitions. [2020-12-01 17:51:33,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-01 17:51:33,866 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:51:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:51:35,672 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 11 proven. 83 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-01 17:51:36,687 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-01 17:51:37,098 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-12-01 17:51:37,942 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-12-01 17:51:38,391 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2020-12-01 17:51:39,347 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-12-01 17:51:40,916 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-12-01 17:51:42,413 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-12-01 17:51:42,867 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2020-12-01 17:51:43,334 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-12-01 17:51:43,819 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-12-01 17:51:44,411 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-01 17:51:44,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:51:44,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 51 states and 76 transitions. [2020-12-01 17:51:44,479 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 76 transitions. [2020-12-01 17:51:44,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-01 17:51:44,480 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:51:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:51:46,177 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 11 proven. 83 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-01 17:51:46,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:51:46,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 51 states and 76 transitions. [2020-12-01 17:51:46,275 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 76 transitions. [2020-12-01 17:51:46,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-01 17:51:46,277 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:51:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:51:52,872 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2020-12-01 17:52:06,592 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-01 17:52:12,490 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-12-01 17:52:15,638 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-01 17:52:18,790 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-12-01 17:52:21,596 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-12-01 17:52:23,394 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-12-01 17:52:26,346 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-12-01 17:52:28,246 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-12-01 17:52:33,122 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-12-01 17:52:34,073 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-01 17:52:35,060 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-12-01 17:52:35,616 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2020-12-01 17:52:37,583 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2020-12-01 17:52:38,160 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-12-01 17:52:40,157 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-12-01 17:52:46,891 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-12-01 17:52:48,949 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-01 17:52:52,696 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-01 17:52:54,895 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2020-12-01 17:52:58,816 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-01 17:52:59,515 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2020-12-01 17:53:03,330 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2020-12-01 17:53:05,628 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2020-12-01 17:53:09,794 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-12-01 17:53:14,412 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2020-12-01 17:53:20,609 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2020-12-01 17:53:22,714 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-12-01 17:53:26,563 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-12-01 17:53:28,812 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-12-01 17:53:31,993 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-12-01 17:53:32,927 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-12-01 17:53:33,836 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-12-01 17:53:38,424 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-12-01 17:53:42,989 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-12-01 17:53:46,729 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-12-01 17:53:48,944 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-12-01 17:53:55,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:53:55,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 54 states and 75 transitions. [2020-12-01 17:53:55,340 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 75 transitions. [2020-12-01 17:53:55,341 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 17:53:55,341 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 28 iterations. [2020-12-01 17:53:55,347 INFO L765 CodeCheckObserver]: All specifications hold 14 specifications checked. All of them hold [2020-12-01 17:53:55,635 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 5 [2020-12-01 17:53:55,886 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-12-01 17:53:56,160 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 1 [2020-12-01 17:53:56,276 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-12-01 17:53:56,516 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-12-01 17:53:56,754 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2020-12-01 17:53:56,958 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-12-01 17:53:57,107 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2020-12-01 17:53:57,108 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-12-01 17:53:57,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 05:53:57 ImpRootNode [2020-12-01 17:53:57,112 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 17:53:57,112 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 17:53:57,112 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 17:53:57,113 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 17:53:57,113 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:48:28" (3/4) ... [2020-12-01 17:53:57,116 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 17:53:57,122 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2020-12-01 17:53:57,128 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2020-12-01 17:53:57,128 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-01 17:53:57,128 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 17:53:57,129 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 17:53:57,172 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bbf671e2-8f56-49b2-996c-0d8fe9f5be55/bin/ukojak/witness.graphml [2020-12-01 17:53:57,173 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 17:53:57,174 INFO L168 Benchmark]: Toolchain (without parser) took 329806.44 ms. Allocated memory was 102.8 MB in the beginning and 654.3 MB in the end (delta: 551.6 MB). Free memory was 75.4 MB in the beginning and 499.2 MB in the end (delta: -423.8 MB). Peak memory consumption was 127.2 MB. Max. memory is 16.1 GB. [2020-12-01 17:53:57,174 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 102.8 MB. Free memory is still 61.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:53:57,175 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.72 ms. Allocated memory is still 102.8 MB. Free memory was 75.1 MB in the beginning and 78.8 MB in the end (delta: -3.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 17:53:57,175 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.50 ms. Allocated memory is still 102.8 MB. Free memory was 78.8 MB in the beginning and 77.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 17:53:57,176 INFO L168 Benchmark]: Boogie Preprocessor took 42.59 ms. Allocated memory is still 102.8 MB. Free memory was 77.1 MB in the beginning and 75.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 17:53:57,176 INFO L168 Benchmark]: RCFGBuilder took 780.00 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 75.8 MB in the beginning and 98.6 MB in the end (delta: -22.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-12-01 17:53:57,177 INFO L168 Benchmark]: CodeCheck took 328523.77 ms. Allocated memory was 123.7 MB in the beginning and 654.3 MB in the end (delta: 530.6 MB). Free memory was 98.1 MB in the beginning and 502.3 MB in the end (delta: -404.2 MB). Peak memory consumption was 454.0 MB. Max. memory is 16.1 GB. [2020-12-01 17:53:57,177 INFO L168 Benchmark]: Witness Printer took 60.25 ms. Allocated memory is still 654.3 MB. Free memory was 502.3 MB in the beginning and 499.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 17:53:57,193 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 38 locations, 14 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 326.7s, OverallIterations: 28, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 688854016 SDtfs, 636991964 SDslu, 216174744 SDs, 0 SdLazy, -69916804 SolverSat, 1207628112 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7449 GetRequests, 6458 SyntacticMatches, 209 SemanticMatches, 782 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284592 ImplicationChecksByTransitivity, 317.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 54.1s InterpolantComputationTime, 548 NumberOfCodeBlocks, 548 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 521 ConstructedInterpolants, 0 QuantifiedInterpolants, 285514 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 12 PerfectInterpolantSequences, 67/426 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - PositiveResult [Line: 41]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 25]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 5]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 25]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 25]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 34]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 5]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 34]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 25]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 102.8 MB. Free memory is still 61.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 350.72 ms. Allocated memory is still 102.8 MB. Free memory was 75.1 MB in the beginning and 78.8 MB in the end (delta: -3.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.50 ms. Allocated memory is still 102.8 MB. Free memory was 78.8 MB in the beginning and 77.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.59 ms. Allocated memory is still 102.8 MB. Free memory was 77.1 MB in the beginning and 75.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 780.00 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 75.8 MB in the beginning and 98.6 MB in the end (delta: -22.8 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * CodeCheck took 328523.77 ms. Allocated memory was 123.7 MB in the beginning and 654.3 MB in the end (delta: 530.6 MB). Free memory was 98.1 MB in the beginning and 502.3 MB in the end (delta: -404.2 MB). Peak memory consumption was 454.0 MB. Max. memory is 16.1 GB. * Witness Printer took 60.25 ms. Allocated memory is still 654.3 MB. Free memory was 502.3 MB in the beginning and 499.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...