./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memset2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f8e1e3cb-2600-4189-a541-83715659978e/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f8e1e3cb-2600-4189-a541-83715659978e/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f8e1e3cb-2600-4189-a541-83715659978e/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f8e1e3cb-2600-4189-a541-83715659978e/bin/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memset2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f8e1e3cb-2600-4189-a541-83715659978e/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f8e1e3cb-2600-4189-a541-83715659978e/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 89c40e0e226fdcfbda8631272bf2c238348d58a6 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 04:36:25,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:36:25,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:36:25,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:36:25,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:36:25,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:36:25,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:36:25,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:36:25,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:36:25,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:36:25,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:36:25,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:36:25,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:36:25,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:36:25,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:36:25,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:36:25,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:36:25,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:36:25,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:36:25,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:36:25,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:36:25,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:36:25,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:36:25,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:36:25,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:36:25,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:36:25,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:36:25,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:36:25,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:36:25,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:36:25,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:36:25,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:36:25,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:36:25,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:36:25,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:36:25,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:36:25,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:36:25,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:36:25,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:36:25,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:36:25,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:36:25,758 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f8e1e3cb-2600-4189-a541-83715659978e/bin/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2020-11-28 04:36:25,794 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:36:25,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:36:25,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:36:25,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:36:25,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:36:25,797 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 04:36:25,797 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 04:36:25,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:36:25,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 04:36:25,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:36:25,799 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-28 04:36:25,799 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-28 04:36:25,799 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-28 04:36:25,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:36:25,800 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 04:36:25,800 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:36:25,800 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:36:25,801 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:36:25,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:36:25,801 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:36:25,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:36:25,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:36:25,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:36:25,802 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:36:25,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:36:25,802 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_f8e1e3cb-2600-4189-a541-83715659978e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f8e1e3cb-2600-4189-a541-83715659978e/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89c40e0e226fdcfbda8631272bf2c238348d58a6 [2020-11-28 04:36:26,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:36:26,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:36:26,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:36:26,115 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:36:26,116 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:36:26,117 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f8e1e3cb-2600-4189-a541-83715659978e/bin/ukojak/../../sv-benchmarks/c/ldv-memsafety/memset2.c [2020-11-28 04:36:26,189 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f8e1e3cb-2600-4189-a541-83715659978e/bin/ukojak/data/a4bab5da2/f712a829af7b4ff3ad44188b04dd6afc/FLAGcf5fd11e9 [2020-11-28 04:36:26,660 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:36:26,661 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f8e1e3cb-2600-4189-a541-83715659978e/sv-benchmarks/c/ldv-memsafety/memset2.c [2020-11-28 04:36:26,672 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f8e1e3cb-2600-4189-a541-83715659978e/bin/ukojak/data/a4bab5da2/f712a829af7b4ff3ad44188b04dd6afc/FLAGcf5fd11e9 [2020-11-28 04:36:27,041 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f8e1e3cb-2600-4189-a541-83715659978e/bin/ukojak/data/a4bab5da2/f712a829af7b4ff3ad44188b04dd6afc [2020-11-28 04:36:27,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:36:27,045 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:36:27,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:36:27,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:36:27,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:36:27,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:36:27" (1/1) ... [2020-11-28 04:36:27,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15a5122f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:27, skipping insertion in model container [2020-11-28 04:36:27,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:36:27" (1/1) ... [2020-11-28 04:36:27,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:36:27,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:36:27,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:36:27,228 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:36:27,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:36:27,273 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:36:27,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:27 WrapperNode [2020-11-28 04:36:27,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:36:27,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:36:27,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:36:27,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:36:27,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:27" (1/1) ... [2020-11-28 04:36:27,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:27" (1/1) ... [2020-11-28 04:36:27,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:36:27,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:36:27,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:36:27,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:36:27,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:27" (1/1) ... [2020-11-28 04:36:27,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:27" (1/1) ... [2020-11-28 04:36:27,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:27" (1/1) ... [2020-11-28 04:36:27,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:27" (1/1) ... [2020-11-28 04:36:27,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:27" (1/1) ... [2020-11-28 04:36:27,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:27" (1/1) ... [2020-11-28 04:36:27,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:27" (1/1) ... [2020-11-28 04:36:27,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:36:27,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:36:27,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:36:27,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:36:27,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f8e1e3cb-2600-4189-a541-83715659978e/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 [2020-11-28 04:36:27,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:36:27,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:36:27,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 04:36:27,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 04:36:27,673 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:36:27,673 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 04:36:27,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:36:27 BoogieIcfgContainer [2020-11-28 04:36:27,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:36:27,676 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:36:27,676 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:36:27,686 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:36:27,687 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:36:27" (1/1) ... [2020-11-28 04:36:27,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:36:27,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:27,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-28 04:36:27,766 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-28 04:36:27,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-11-28 04:36:27,769 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:27,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:27,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:27,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-28 04:36:27,959 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-28 04:36:27,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-28 04:36:27,959 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:28,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:28,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:28,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2020-11-28 04:36:28,253 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-11-28 04:36:28,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 04:36:28,254 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:28,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:28,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:28,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 8 states and 9 transitions. [2020-11-28 04:36:28,388 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2020-11-28 04:36:28,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 04:36:28,388 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:28,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:28,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:28,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 9 states and 11 transitions. [2020-11-28 04:36:28,563 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2020-11-28 04:36:28,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 04:36:28,563 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:28,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:28,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:28,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 10 states and 12 transitions. [2020-11-28 04:36:28,752 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2020-11-28 04:36:28,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 04:36:28,752 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:28,825 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:28,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:28,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 11 states and 13 transitions. [2020-11-28 04:36:28,929 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-11-28 04:36:28,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 04:36:28,929 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:29,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:29,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 12 states and 14 transitions. [2020-11-28 04:36:29,073 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-11-28 04:36:29,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 04:36:29,074 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:29,143 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:29,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:29,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 13 states and 15 transitions. [2020-11-28 04:36:29,278 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-11-28 04:36:29,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 04:36:29,278 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:29,366 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:29,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:29,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2020-11-28 04:36:29,512 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-28 04:36:29,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 04:36:29,513 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:29,592 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:29,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:29,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2020-11-28 04:36:29,715 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-11-28 04:36:29,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 04:36:29,716 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:29,801 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:29,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:29,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 16 states and 18 transitions. [2020-11-28 04:36:29,935 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-11-28 04:36:29,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 04:36:29,936 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:30,024 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:30,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:30,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 17 states and 19 transitions. [2020-11-28 04:36:30,152 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-11-28 04:36:30,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 04:36:30,154 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:30,219 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:30,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:30,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 18 states and 20 transitions. [2020-11-28 04:36:30,366 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-11-28 04:36:30,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 04:36:30,366 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:30,453 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:30,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:30,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 19 states and 21 transitions. [2020-11-28 04:36:30,608 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-11-28 04:36:30,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 04:36:30,608 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:30,683 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:30,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:30,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 20 states and 22 transitions. [2020-11-28 04:36:30,824 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-11-28 04:36:30,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 04:36:30,825 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:30,929 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:31,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:31,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 21 states and 23 transitions. [2020-11-28 04:36:31,071 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-11-28 04:36:31,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 04:36:31,072 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:31,159 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:31,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:31,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 22 states and 24 transitions. [2020-11-28 04:36:31,286 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-11-28 04:36:31,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 04:36:31,287 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:31,351 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:31,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:31,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 23 states and 25 transitions. [2020-11-28 04:36:31,502 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-11-28 04:36:31,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 04:36:31,503 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:31,595 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:31,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:31,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 24 states and 26 transitions. [2020-11-28 04:36:31,763 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-11-28 04:36:31,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 04:36:31,764 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:31,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:31,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 25 states and 27 transitions. [2020-11-28 04:36:31,973 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-11-28 04:36:31,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 04:36:31,974 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:32,088 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:32,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:32,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 26 states and 28 transitions. [2020-11-28 04:36:32,250 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-11-28 04:36:32,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 04:36:32,251 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:32,376 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:32,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:32,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 27 states and 29 transitions. [2020-11-28 04:36:32,558 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-11-28 04:36:32,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 04:36:32,558 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:32,635 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:32,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:32,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 28 states and 30 transitions. [2020-11-28 04:36:32,796 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-11-28 04:36:32,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 04:36:32,796 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:33,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:33,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 29 states and 31 transitions. [2020-11-28 04:36:33,041 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-11-28 04:36:33,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 04:36:33,041 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:33,119 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:33,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:33,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 30 states and 32 transitions. [2020-11-28 04:36:33,296 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-11-28 04:36:33,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-28 04:36:33,297 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:33,394 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:33,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:33,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 31 states and 33 transitions. [2020-11-28 04:36:33,591 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-11-28 04:36:33,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-28 04:36:33,592 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:33,706 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:33,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:33,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 32 states and 34 transitions. [2020-11-28 04:36:33,895 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-11-28 04:36:33,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 04:36:33,896 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:33,999 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:34,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:34,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 33 states and 35 transitions. [2020-11-28 04:36:34,153 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-11-28 04:36:34,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 04:36:34,154 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:34,279 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:34,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:34,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 34 states and 36 transitions. [2020-11-28 04:36:34,493 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-11-28 04:36:34,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 04:36:34,493 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:34,594 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:34,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:34,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 35 states and 37 transitions. [2020-11-28 04:36:34,793 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-11-28 04:36:34,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-28 04:36:34,793 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:34,903 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:35,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:35,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 36 states and 38 transitions. [2020-11-28 04:36:35,126 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-11-28 04:36:35,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-28 04:36:35,127 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:35,231 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:35,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:35,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 37 states and 39 transitions. [2020-11-28 04:36:35,446 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-11-28 04:36:35,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-28 04:36:35,446 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:35,545 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:35,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:35,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 38 states and 40 transitions. [2020-11-28 04:36:35,764 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-11-28 04:36:35,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-28 04:36:35,765 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:35,868 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:36,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:36,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 39 states and 41 transitions. [2020-11-28 04:36:36,080 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-11-28 04:36:36,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-28 04:36:36,081 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:36,208 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:36,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:36,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 40 states and 42 transitions. [2020-11-28 04:36:36,451 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-11-28 04:36:36,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-28 04:36:36,451 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:36,545 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:36,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:36,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 41 states and 43 transitions. [2020-11-28 04:36:36,755 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-11-28 04:36:36,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-28 04:36:36,756 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:36,871 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:37,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:37,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 42 states and 44 transitions. [2020-11-28 04:36:37,129 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-11-28 04:36:37,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-28 04:36:37,129 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:37,239 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:37,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:37,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 43 states and 45 transitions. [2020-11-28 04:36:37,476 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-11-28 04:36:37,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-28 04:36:37,476 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:37,588 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:37,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:37,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 44 states and 46 transitions. [2020-11-28 04:36:37,819 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2020-11-28 04:36:37,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-28 04:36:37,819 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:37,940 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:38,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:38,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 45 states and 47 transitions. [2020-11-28 04:36:38,247 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-11-28 04:36:38,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-28 04:36:38,248 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:38,380 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:38,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:38,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 46 states and 48 transitions. [2020-11-28 04:36:38,636 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-11-28 04:36:38,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-28 04:36:38,637 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:38,799 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:39,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:39,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 47 states and 49 transitions. [2020-11-28 04:36:39,041 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-11-28 04:36:39,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-28 04:36:39,041 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:39,320 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 820 trivial. 0 not checked. [2020-11-28 04:36:51,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:51,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 46 states and 48 transitions. [2020-11-28 04:36:51,447 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-11-28 04:36:51,447 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 04:36:51,447 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 44 iterations. [2020-11-28 04:36:51,452 INFO L765 CodeCheckObserver]: All specifications hold 3 specifications checked. All of them hold [2020-11-28 04:36:51,642 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 9 [2020-11-28 04:36:51,668 INFO L569 CodeCheckObserver]: Invariant with dag size 9 [2020-11-28 04:36:51,672 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-11-28 04:36:51,673 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-11-28 04:36:51,673 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-11-28 04:36:51,677 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-11-28 04:36:51,677 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-11-28 04:36:51,678 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-11-28 04:36:51,679 INFO L569 CodeCheckObserver]: Invariant with dag size 3 [2020-11-28 04:36:51,679 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-11-28 04:36:51,679 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-11-28 04:36:51,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:36:51 ImpRootNode [2020-11-28 04:36:51,680 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:36:51,681 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:36:51,681 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:36:51,681 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:36:51,682 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:36:27" (3/4) ... [2020-11-28 04:36:51,685 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 04:36:51,695 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-28 04:36:51,695 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-28 04:36:51,696 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 04:36:51,724 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \valid[cstats := \old(unknown-main_\old_#valid-unknown)[cstats]] == \old(unknown-main_\old_#valid-unknown) && \old(unknown-main_\old_#valid-unknown)[cstats] == 0 [2020-11-28 04:36:51,724 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(unknown-main_\old_#valid-unknown) == \valid [2020-11-28 04:36:51,735 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f8e1e3cb-2600-4189-a541-83715659978e/bin/ukojak/witness.graphml [2020-11-28 04:36:51,735 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:36:51,736 INFO L168 Benchmark]: Toolchain (without parser) took 24690.85 ms. Allocated memory was 113.2 MB in the beginning and 465.6 MB in the end (delta: 352.3 MB). Free memory was 84.3 MB in the beginning and 384.1 MB in the end (delta: -299.8 MB). Peak memory consumption was 51.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:36:51,737 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 83.9 MB. Free memory is still 50.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:36:51,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.23 ms. Allocated memory is still 113.2 MB. Free memory was 84.0 MB in the beginning and 90.8 MB in the end (delta: -6.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 04:36:51,738 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.66 ms. Allocated memory is still 113.2 MB. Free memory was 90.8 MB in the beginning and 89.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:36:51,739 INFO L168 Benchmark]: Boogie Preprocessor took 19.54 ms. Allocated memory is still 113.2 MB. Free memory was 89.4 MB in the beginning and 88.4 MB in the end (delta: 998.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:36:51,739 INFO L168 Benchmark]: RCFGBuilder took 345.54 ms. Allocated memory is still 113.2 MB. Free memory was 88.4 MB in the beginning and 76.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 04:36:51,740 INFO L168 Benchmark]: CodeCheck took 24004.37 ms. Allocated memory was 113.2 MB in the beginning and 465.6 MB in the end (delta: 352.3 MB). Free memory was 76.1 MB in the beginning and 387.3 MB in the end (delta: -311.1 MB). Peak memory consumption was 44.2 MB. Max. memory is 16.1 GB. [2020-11-28 04:36:51,741 INFO L168 Benchmark]: Witness Printer took 53.89 ms. Allocated memory is still 465.6 MB. Free memory was 386.2 MB in the beginning and 384.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:36:51,744 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 1 procedures, 9 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 23.7s, OverallIterations: 44, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 SDtfs, 8 SDslu, 0 SDs, 0 SdLazy, 354 SolverSat, 162 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7644 GetRequests, 6520 SyntacticMatches, 780 SemanticMatches, 344 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54911 ImplicationChecksByTransitivity, 20.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 1030 NumberOfCodeBlocks, 1030 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 987 ConstructedInterpolants, 0 QuantifiedInterpolants, 205465 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 43 InterpolantComputations, 4 PerfectInterpolantSequences, 820/11480 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: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 20]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: -1]: Loop Invariant [2020-11-28 04:36:51,747 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-11-28 04:36:51,747 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-11-28 04:36:51,747 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-11-28 04:36:51,748 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-11-28 04:36:51,748 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-11-28 04:36:51,749 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid Derived loop invariant: \valid[cstats := \old(unknown-main_\old_#valid-unknown)[cstats]] == \old(unknown-main_\old_#valid-unknown) && \old(unknown-main_\old_#valid-unknown)[cstats] == 0 - InvariantResult [Line: 20]: Loop Invariant [2020-11-28 04:36:51,749 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2020-11-28 04:36:51,750 WARN L1295 BoogieBacktranslator]: unknown boogie variable main_old_#valid Derived loop invariant: \old(unknown-main_\old_#valid-unknown) == \valid * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 83.9 MB. Free memory is still 50.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 228.23 ms. Allocated memory is still 113.2 MB. Free memory was 84.0 MB in the beginning and 90.8 MB in the end (delta: -6.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.66 ms. Allocated memory is still 113.2 MB. Free memory was 90.8 MB in the beginning and 89.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.54 ms. Allocated memory is still 113.2 MB. Free memory was 89.4 MB in the beginning and 88.4 MB in the end (delta: 998.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 345.54 ms. Allocated memory is still 113.2 MB. Free memory was 88.4 MB in the beginning and 76.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * CodeCheck took 24004.37 ms. Allocated memory was 113.2 MB in the beginning and 465.6 MB in the end (delta: 352.3 MB). Free memory was 76.1 MB in the beginning and 387.3 MB in the end (delta: -311.1 MB). Peak memory consumption was 44.2 MB. Max. memory is 16.1 GB. * Witness Printer took 53.89 ms. Allocated memory is still 465.6 MB. Free memory was 386.2 MB in the beginning and 384.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid RESULT: Ultimate proved your program to be correct! Received shutdown request...