./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-sorted_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_44e4ec4b-80f7-4f6e-83c5-9c2fd8c90a2a/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_44e4ec4b-80f7-4f6e-83c5-9c2fd8c90a2a/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_44e4ec4b-80f7-4f6e-83c5-9c2fd8c90a2a/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_44e4ec4b-80f7-4f6e-83c5-9c2fd8c90a2a/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-sorted_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_44e4ec4b-80f7-4f6e-83c5-9c2fd8c90a2a/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_44e4ec4b-80f7-4f6e-83c5-9c2fd8c90a2a/bin-2019/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8be34918f5cf463066a3551693e083428b9e6ee2 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 15:56:39,772 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 15:56:39,773 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 15:56:39,781 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 15:56:39,781 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 15:56:39,782 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 15:56:39,782 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 15:56:39,784 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 15:56:39,785 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 15:56:39,785 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 15:56:39,786 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 15:56:39,786 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 15:56:39,787 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 15:56:39,788 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 15:56:39,789 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 15:56:39,790 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 15:56:39,790 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 15:56:39,792 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 15:56:39,794 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 15:56:39,795 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 15:56:39,796 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 15:56:39,797 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 15:56:39,799 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 15:56:39,799 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 15:56:39,799 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 15:56:39,800 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 15:56:39,801 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 15:56:39,802 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 15:56:39,802 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 15:56:39,803 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 15:56:39,803 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 15:56:39,804 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 15:56:39,804 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 15:56:39,804 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 15:56:39,805 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 15:56:39,805 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 15:56:39,806 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_44e4ec4b-80f7-4f6e-83c5-9c2fd8c90a2a/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-11-18 15:56:39,816 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 15:56:39,817 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 15:56:39,817 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 15:56:39,817 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 15:56:39,818 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 15:56:39,818 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 15:56:39,818 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 15:56:39,818 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 15:56:39,818 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 15:56:39,819 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 15:56:39,819 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 15:56:39,819 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 15:56:39,819 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 15:56:39,819 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 15:56:39,819 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 15:56:39,819 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 15:56:39,819 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 15:56:39,819 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 15:56:39,819 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-18 15:56:39,820 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-18 15:56:39,820 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 15:56:39,820 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 15:56:39,820 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-18 15:56:39,820 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 15:56:39,820 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 15:56:39,820 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 15:56:39,820 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-18 15:56:39,820 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 15:56:39,821 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 15:56:39,821 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_44e4ec4b-80f7-4f6e-83c5-9c2fd8c90a2a/bin-2019/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 ! call(__VERIFIER_error())) ) 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 -> 8be34918f5cf463066a3551693e083428b9e6ee2 [2018-11-18 15:56:39,843 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 15:56:39,851 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 15:56:39,853 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 15:56:39,853 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 15:56:39,854 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 15:56:39,854 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_44e4ec4b-80f7-4f6e-83c5-9c2fd8c90a2a/bin-2019/ukojak/../../sv-benchmarks/c/forester-heap/sll-sorted_false-unreach-call_false-valid-memcleanup.i [2018-11-18 15:56:39,892 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_44e4ec4b-80f7-4f6e-83c5-9c2fd8c90a2a/bin-2019/ukojak/data/b1064b17f/9dc4d91a1aaf49a889aa03a59418c11b/FLAG83398ae14 [2018-11-18 15:56:40,266 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 15:56:40,266 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_44e4ec4b-80f7-4f6e-83c5-9c2fd8c90a2a/sv-benchmarks/c/forester-heap/sll-sorted_false-unreach-call_false-valid-memcleanup.i [2018-11-18 15:56:40,274 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_44e4ec4b-80f7-4f6e-83c5-9c2fd8c90a2a/bin-2019/ukojak/data/b1064b17f/9dc4d91a1aaf49a889aa03a59418c11b/FLAG83398ae14 [2018-11-18 15:56:40,653 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_44e4ec4b-80f7-4f6e-83c5-9c2fd8c90a2a/bin-2019/ukojak/data/b1064b17f/9dc4d91a1aaf49a889aa03a59418c11b [2018-11-18 15:56:40,656 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 15:56:40,657 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 15:56:40,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 15:56:40,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 15:56:40,660 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 15:56:40,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:56:40" (1/1) ... [2018-11-18 15:56:40,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c37ceee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:40, skipping insertion in model container [2018-11-18 15:56:40,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:56:40" (1/1) ... [2018-11-18 15:56:40,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 15:56:40,701 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 15:56:40,897 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:56:40,904 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 15:56:40,936 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:56:41,015 INFO L195 MainTranslator]: Completed translation [2018-11-18 15:56:41,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:41 WrapperNode [2018-11-18 15:56:41,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 15:56:41,016 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 15:56:41,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 15:56:41,016 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 15:56:41,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:41" (1/1) ... [2018-11-18 15:56:41,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:41" (1/1) ... [2018-11-18 15:56:41,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 15:56:41,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 15:56:41,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 15:56:41,044 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 15:56:41,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:41" (1/1) ... [2018-11-18 15:56:41,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:41" (1/1) ... [2018-11-18 15:56:41,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:41" (1/1) ... [2018-11-18 15:56:41,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:41" (1/1) ... [2018-11-18 15:56:41,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:41" (1/1) ... [2018-11-18 15:56:41,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:41" (1/1) ... [2018-11-18 15:56:41,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:41" (1/1) ... [2018-11-18 15:56:41,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 15:56:41,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 15:56:41,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 15:56:41,066 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 15:56:41,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:56:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_44e4ec4b-80f7-4f6e-83c5-9c2fd8c90a2a/bin-2019/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 [2018-11-18 15:56:41,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 15:56:41,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 15:56:41,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 15:56:41,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 15:56:41,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 15:56:41,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 15:56:41,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 15:56:41,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 15:56:41,483 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 15:56:41,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:56:41 BoogieIcfgContainer [2018-11-18 15:56:41,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 15:56:41,484 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-18 15:56:41,484 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-18 15:56:41,490 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-18 15:56:41,490 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:56:41" (1/1) ... [2018-11-18 15:56:41,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:56:41,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:56:41,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 51 states and 80 transitions. [2018-11-18 15:56:41,521 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 80 transitions. [2018-11-18 15:56:41,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-11-18 15:56:41,523 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:56:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:56:41,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:56:41,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:56:41,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 51 states and 76 transitions. [2018-11-18 15:56:41,598 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 76 transitions. [2018-11-18 15:56:41,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-18 15:56:41,598 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:56:41,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:56:41,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:56:41,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:56:41,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 53 states and 79 transitions. [2018-11-18 15:56:41,667 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 79 transitions. [2018-11-18 15:56:41,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 15:56:41,667 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:56:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:56:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 15:56:41,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:56:41,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 51 states and 77 transitions. [2018-11-18 15:56:41,948 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 77 transitions. [2018-11-18 15:56:41,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 15:56:41,949 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:56:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:56:41,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 15:56:41,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:56:41,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 51 states and 72 transitions. [2018-11-18 15:56:41,980 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 72 transitions. [2018-11-18 15:56:41,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 15:56:41,980 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:56:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:56:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:56:42,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:56:42,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 66 states and 99 transitions. [2018-11-18 15:56:42,778 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 99 transitions. [2018-11-18 15:56:42,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 15:56:42,780 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:56:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:56:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:56:44,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:56:44,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 80 states and 125 transitions. [2018-11-18 15:56:44,655 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 125 transitions. [2018-11-18 15:56:44,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 15:56:44,655 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:56:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:56:44,721 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:56:44,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:56:44,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 82 states and 132 transitions. [2018-11-18 15:56:44,991 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 132 transitions. [2018-11-18 15:56:44,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 15:56:44,992 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:56:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:56:45,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:56:45,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:56:45,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 88 states and 138 transitions. [2018-11-18 15:56:45,894 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 138 transitions. [2018-11-18 15:56:45,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 15:56:45,895 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:56:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:56:46,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:56:47,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:56:47,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 104 states and 165 transitions. [2018-11-18 15:56:47,942 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 165 transitions. [2018-11-18 15:56:47,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 15:56:47,943 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:56:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:56:48,749 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:56:51,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:56:51,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 115 states and 181 transitions. [2018-11-18 15:56:51,518 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 181 transitions. [2018-11-18 15:56:51,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 15:56:51,519 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:56:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:56:51,585 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:56:52,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:56:52,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 119 states and 197 transitions. [2018-11-18 15:56:52,518 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 197 transitions. [2018-11-18 15:56:52,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 15:56:52,519 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:56:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:56:52,582 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:56:53,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:56:53,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 119 states and 190 transitions. [2018-11-18 15:56:53,028 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 190 transitions. [2018-11-18 15:56:53,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 15:56:53,028 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:56:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:56:53,634 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:56:55,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:56:55,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 128 states and 205 transitions. [2018-11-18 15:56:55,934 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 205 transitions. [2018-11-18 15:56:55,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 15:56:55,934 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:56:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:56:56,154 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:56:56,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:56:56,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 130 states and 209 transitions. [2018-11-18 15:56:56,809 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 209 transitions. [2018-11-18 15:56:56,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 15:56:56,809 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:56:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:56:56,839 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:56:59,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:56:59,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 141 states and 231 transitions. [2018-11-18 15:56:59,559 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 231 transitions. [2018-11-18 15:56:59,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 15:56:59,560 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:56:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:56:59,582 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:57:00,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:57:00,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 147 states and 240 transitions. [2018-11-18 15:57:00,581 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 240 transitions. [2018-11-18 15:57:00,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 15:57:00,581 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:57:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:57:00,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:57:00,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:57:00,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 151 states and 242 transitions. [2018-11-18 15:57:00,824 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 242 transitions. [2018-11-18 15:57:00,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 15:57:00,824 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:57:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:57:01,497 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:57:05,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:57:05,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 163 states and 267 transitions. [2018-11-18 15:57:05,185 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 267 transitions. [2018-11-18 15:57:05,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 15:57:05,185 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:57:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:57:06,488 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:57:10,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:57:10,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 174 states and 297 transitions. [2018-11-18 15:57:10,763 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 297 transitions. [2018-11-18 15:57:10,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 15:57:10,764 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:57:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:57:11,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 15:57:11,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:57:11,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 172 states and 292 transitions. [2018-11-18 15:57:11,931 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 292 transitions. [2018-11-18 15:57:11,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 15:57:11,932 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:57:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:57:12,181 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:57:14,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:57:14,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 180 states and 306 transitions. [2018-11-18 15:57:14,479 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 306 transitions. [2018-11-18 15:57:14,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 15:57:14,479 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:57:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:57:15,077 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:57:19,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:57:19,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 194 states and 337 transitions. [2018-11-18 15:57:19,663 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 337 transitions. [2018-11-18 15:57:19,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 15:57:19,663 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:57:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:57:20,093 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:57:20,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:57:20,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 195 states and 343 transitions. [2018-11-18 15:57:20,670 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 343 transitions. [2018-11-18 15:57:20,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 15:57:20,671 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:57:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:57:21,150 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:57:22,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:57:22,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 201 states and 354 transitions. [2018-11-18 15:57:22,920 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 354 transitions. [2018-11-18 15:57:22,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 15:57:22,921 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:57:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:57:23,689 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:57:28,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:57:28,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 215 states and 385 transitions. [2018-11-18 15:57:28,919 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 385 transitions. [2018-11-18 15:57:28,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 15:57:28,920 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:57:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:57:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 15:57:30,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:57:30,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 219 states and 396 transitions. [2018-11-18 15:57:30,780 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 396 transitions. [2018-11-18 15:57:30,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 15:57:30,781 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:57:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:57:30,983 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:57:34,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:57:34,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 230 states and 416 transitions. [2018-11-18 15:57:34,981 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 416 transitions. [2018-11-18 15:57:34,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 15:57:34,982 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:57:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:57:35,063 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 15:57:35,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:57:35,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 231 states and 417 transitions. [2018-11-18 15:57:35,618 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 417 transitions. [2018-11-18 15:57:35,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 15:57:35,618 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:57:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:57:36,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 15:57:40,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:57:40,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 240 states and 438 transitions. [2018-11-18 15:57:40,125 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 438 transitions. [2018-11-18 15:57:40,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 15:57:40,126 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:57:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:57:41,973 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:57:47,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:57:47,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 249 states and 456 transitions. [2018-11-18 15:57:47,494 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 456 transitions. [2018-11-18 15:57:47,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 15:57:47,495 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:57:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:57:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 15:57:57,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:57:57,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 263 states and 494 transitions. [2018-11-18 15:57:57,261 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 494 transitions. [2018-11-18 15:57:57,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 15:57:57,262 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:57:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:57:59,372 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:58:04,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:58:04,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 266 states and 494 transitions. [2018-11-18 15:58:04,545 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 494 transitions. [2018-11-18 15:58:04,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 15:58:04,546 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:58:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:58:04,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 15:58:05,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:58:05,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 268 states and 500 transitions. [2018-11-18 15:58:05,251 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 500 transitions. [2018-11-18 15:58:05,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 15:58:05,251 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:58:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:58:06,181 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:58:10,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:58:10,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 277 states and 517 transitions. [2018-11-18 15:58:10,956 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 517 transitions. [2018-11-18 15:58:10,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 15:58:10,957 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:58:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:58:12,378 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:58:14,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:58:14,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 279 states and 522 transitions. [2018-11-18 15:58:14,255 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 522 transitions. [2018-11-18 15:58:14,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 15:58:14,256 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:58:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:58:14,371 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:58:16,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:58:16,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 283 states and 534 transitions. [2018-11-18 15:58:16,697 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 534 transitions. [2018-11-18 15:58:16,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 15:58:16,697 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:58:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:58:16,994 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:58:20,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:58:20,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 290 states and 546 transitions. [2018-11-18 15:58:20,912 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 546 transitions. [2018-11-18 15:58:20,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 15:58:20,912 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:58:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:58:21,046 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:58:21,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:58:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 291 states and 549 transitions. [2018-11-18 15:58:21,795 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 549 transitions. [2018-11-18 15:58:21,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 15:58:21,796 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:58:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:58:22,062 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:58:23,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:58:23,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 219 states and 393 transitions. [2018-11-18 15:58:23,216 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 393 transitions. [2018-11-18 15:58:23,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 15:58:23,216 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:58:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:58:25,097 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 15:58:33,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:58:33,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 231 states and 420 transitions. [2018-11-18 15:58:33,295 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 420 transitions. [2018-11-18 15:58:33,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 15:58:33,295 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:58:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:58:33,412 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 15:58:34,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:58:34,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 232 states and 423 transitions. [2018-11-18 15:58:34,561 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 423 transitions. [2018-11-18 15:58:34,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 15:58:34,561 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:58:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:58:39,150 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:58:52,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:58:52,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 245 states and 455 transitions. [2018-11-18 15:58:52,086 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 455 transitions. [2018-11-18 15:58:52,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 15:58:52,087 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:58:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:58:52,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 15:58:53,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:58:53,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 248 states and 462 transitions. [2018-11-18 15:58:53,667 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 462 transitions. [2018-11-18 15:58:53,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 15:58:53,667 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:58:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:58:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 15:58:56,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:58:56,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 251 states and 467 transitions. [2018-11-18 15:58:56,090 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 467 transitions. [2018-11-18 15:58:56,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 15:58:56,091 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:58:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:58:56,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 15:58:57,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:58:57,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 252 states and 470 transitions. [2018-11-18 15:58:57,537 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 470 transitions. [2018-11-18 15:58:57,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 15:58:57,537 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:58:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:58:57,631 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 15:59:00,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:59:00,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 255 states and 477 transitions. [2018-11-18 15:59:00,061 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 477 transitions. [2018-11-18 15:59:00,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 15:59:00,061 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:59:00,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:59:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 15:59:01,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:59:01,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 257 states and 480 transitions. [2018-11-18 15:59:01,828 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 480 transitions. [2018-11-18 15:59:01,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 15:59:01,828 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:59:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:59:01,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 15:59:05,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:59:05,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 261 states and 488 transitions. [2018-11-18 15:59:05,278 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 488 transitions. [2018-11-18 15:59:05,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 15:59:05,279 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:59:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:59:05,399 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 15:59:06,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:59:06,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 263 states and 491 transitions. [2018-11-18 15:59:06,520 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 491 transitions. [2018-11-18 15:59:06,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 15:59:06,520 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:59:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:59:08,687 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:59:18,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:59:18,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 276 states and 516 transitions. [2018-11-18 15:59:18,666 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 516 transitions. [2018-11-18 15:59:18,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 15:59:18,666 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:59:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:59:19,225 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:59:22,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:59:22,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 280 states and 527 transitions. [2018-11-18 15:59:22,539 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 527 transitions. [2018-11-18 15:59:22,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 15:59:22,540 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:59:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:59:23,111 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:59:24,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:59:24,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 281 states and 529 transitions. [2018-11-18 15:59:24,179 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 529 transitions. [2018-11-18 15:59:24,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 15:59:24,180 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:59:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:59:28,902 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:59:38,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:59:38,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 287 states and 551 transitions. [2018-11-18 15:59:38,468 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 551 transitions. [2018-11-18 15:59:38,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 15:59:38,469 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:59:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:59:39,442 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 15:59:40,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:59:40,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 287 states and 549 transitions. [2018-11-18 15:59:40,732 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 549 transitions. [2018-11-18 15:59:40,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 15:59:40,732 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:59:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:59:41,957 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 15:59:47,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 15:59:47,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 291 states and 556 transitions. [2018-11-18 15:59:47,480 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 556 transitions. [2018-11-18 15:59:47,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-18 15:59:47,480 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 15:59:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:59:49,467 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:00:01,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:00:01,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 305 states and 585 transitions. [2018-11-18 16:00:01,107 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 585 transitions. [2018-11-18 16:00:01,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-18 16:00:01,107 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:00:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:00:01,211 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-18 16:00:03,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:00:03,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 307 states and 588 transitions. [2018-11-18 16:00:03,934 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 588 transitions. [2018-11-18 16:00:03,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-18 16:00:03,934 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:00:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:00:04,343 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:00:07,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:00:07,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 313 states and 596 transitions. [2018-11-18 16:00:07,709 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 596 transitions. [2018-11-18 16:00:07,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-18 16:00:07,710 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:00:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:00:07,843 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 16:00:13,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:00:13,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 318 states and 609 transitions. [2018-11-18 16:00:13,866 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 609 transitions. [2018-11-18 16:00:13,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-18 16:00:13,866 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:00:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:00:17,167 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:00:28,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:00:28,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 332 states and 636 transitions. [2018-11-18 16:00:28,830 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 636 transitions. [2018-11-18 16:00:28,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-18 16:00:28,830 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:00:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:00:28,937 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-18 16:00:32,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:00:32,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 336 states and 649 transitions. [2018-11-18 16:00:32,103 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 649 transitions. [2018-11-18 16:00:32,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-18 16:00:32,104 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:00:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:00:37,435 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:00:41,940 WARN L180 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2018-11-18 16:00:53,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:00:53,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 317 states and 615 transitions. [2018-11-18 16:00:53,358 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 615 transitions. [2018-11-18 16:00:53,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-18 16:00:53,358 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:00:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:00:53,422 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 16:00:56,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:00:56,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 320 states and 619 transitions. [2018-11-18 16:00:56,577 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 619 transitions. [2018-11-18 16:00:56,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-18 16:00:56,578 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:00:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:01:02,007 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:01:15,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:01:15,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 330 states and 637 transitions. [2018-11-18 16:01:15,977 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 637 transitions. [2018-11-18 16:01:15,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-18 16:01:15,977 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:01:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:01:16,082 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-18 16:01:17,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:01:17,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 331 states and 639 transitions. [2018-11-18 16:01:17,140 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 639 transitions. [2018-11-18 16:01:17,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 16:01:17,141 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:01:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:01:17,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 16:01:19,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:01:19,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 333 states and 643 transitions. [2018-11-18 16:01:19,034 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 643 transitions. [2018-11-18 16:01:19,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 16:01:19,034 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:01:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:01:25,633 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:01:43,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:01:43,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 345 states and 675 transitions. [2018-11-18 16:01:43,494 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 675 transitions. [2018-11-18 16:01:43,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 16:01:43,495 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:01:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:01:43,623 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 16:01:46,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:01:46,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 347 states and 682 transitions. [2018-11-18 16:01:46,065 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 682 transitions. [2018-11-18 16:01:46,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 16:01:46,066 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:01:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:01:46,914 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:01:50,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:01:50,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 348 states and 680 transitions. [2018-11-18 16:01:50,580 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 680 transitions. [2018-11-18 16:01:50,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 16:01:50,580 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:01:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:01:56,026 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:02:09,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:02:09,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 355 states and 693 transitions. [2018-11-18 16:02:09,409 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 693 transitions. [2018-11-18 16:02:09,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 16:02:09,410 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:02:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:02:10,906 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-18 16:02:22,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:02:22,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 361 states and 710 transitions. [2018-11-18 16:02:22,912 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 710 transitions. [2018-11-18 16:02:22,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 16:02:22,912 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:02:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:02:23,649 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:02:27,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:02:27,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 363 states and 716 transitions. [2018-11-18 16:02:27,374 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 716 transitions. [2018-11-18 16:02:27,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 16:02:27,375 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:02:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:02:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-18 16:02:30,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:02:30,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 364 states and 717 transitions. [2018-11-18 16:02:30,201 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 717 transitions. [2018-11-18 16:02:30,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 16:02:30,201 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:02:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:02:33,454 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:02:52,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:02:52,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 371 states and 734 transitions. [2018-11-18 16:02:52,657 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 734 transitions. [2018-11-18 16:02:52,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 16:02:52,658 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:02:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:02:55,767 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 16:03:10,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:03:10,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 380 states and 753 transitions. [2018-11-18 16:03:10,156 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 753 transitions. [2018-11-18 16:03:10,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 16:03:10,157 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:03:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:03:10,992 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:03:15,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:03:15,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 381 states and 756 transitions. [2018-11-18 16:03:15,704 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 756 transitions. [2018-11-18 16:03:15,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 16:03:15,704 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:03:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:03:15,817 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-18 16:03:22,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:03:22,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 385 states and 768 transitions. [2018-11-18 16:03:22,009 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 768 transitions. [2018-11-18 16:03:22,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 16:03:22,009 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:03:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:03:26,412 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 16:03:33,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:03:33,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 387 states and 781 transitions. [2018-11-18 16:03:33,018 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 781 transitions. [2018-11-18 16:03:33,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 16:03:33,019 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:03:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:03:33,126 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-18 16:03:34,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:03:34,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 388 states and 782 transitions. [2018-11-18 16:03:34,526 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 782 transitions. [2018-11-18 16:03:34,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 16:03:34,526 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:03:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:03:36,185 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 16:03:39,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:03:39,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 391 states and 788 transitions. [2018-11-18 16:03:39,241 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 788 transitions. [2018-11-18 16:03:39,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 16:03:39,242 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:03:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:03:49,273 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:03:52,942 WARN L180 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 93 [2018-11-18 16:03:54,355 WARN L180 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2018-11-18 16:04:17,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:04:17,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 403 states and 824 transitions. [2018-11-18 16:04:17,169 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 824 transitions. [2018-11-18 16:04:17,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 16:04:17,170 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:04:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:04:18,773 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 16:04:21,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:04:21,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 404 states and 826 transitions. [2018-11-18 16:04:21,685 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 826 transitions. [2018-11-18 16:04:21,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 16:04:21,685 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:04:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:04:21,701 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 16:04:25,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:04:25,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 407 states and 830 transitions. [2018-11-18 16:04:25,976 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 830 transitions. [2018-11-18 16:04:25,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 16:04:25,977 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:04:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:04:27,610 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 16:04:30,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:04:30,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 410 states and 834 transitions. [2018-11-18 16:04:30,304 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 834 transitions. [2018-11-18 16:04:30,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 16:04:30,305 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:04:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:04:31,407 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 16:04:36,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 16:04:36,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 413 states and 842 transitions. [2018-11-18 16:04:36,712 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 842 transitions. [2018-11-18 16:04:36,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 16:04:36,713 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 16:04:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:04:36,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:04:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:04:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 16:04:36,839 WARN L493 CodeCheckObserver]: This program is UNSAFE, Check terminated with 86 iterations. [2018-11-18 16:04:36,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 18.11 04:04:36 ImpRootNode [2018-11-18 16:04:36,872 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-18 16:04:36,872 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:04:36,872 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:04:36,872 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:04:36,874 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:56:41" (3/4) ... [2018-11-18 16:04:36,876 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 16:04:36,928 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_44e4ec4b-80f7-4f6e-83c5-9c2fd8c90a2a/bin-2019/ukojak/witness.graphml [2018-11-18 16:04:36,928 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:04:36,929 INFO L168 Benchmark]: Toolchain (without parser) took 476272.81 ms. Allocated memory was 1.0 GB in the beginning and 1.8 GB in the end (delta: 761.8 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -196.4 MB). Peak memory consumption was 565.4 MB. Max. memory is 11.5 GB. [2018-11-18 16:04:36,929 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:04:36,930 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.70 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -160.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2018-11-18 16:04:36,930 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.39 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-18 16:04:36,930 INFO L168 Benchmark]: Boogie Preprocessor took 21.94 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:04:36,930 INFO L168 Benchmark]: RCFGBuilder took 416.99 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 11.5 GB. [2018-11-18 16:04:36,931 INFO L168 Benchmark]: CodeCheck took 475388.10 ms. Allocated memory was 1.1 GB in the beginning and 1.8 GB in the end (delta: 641.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -88.3 MB). Peak memory consumption was 553.5 MB. Max. memory is 11.5 GB. [2018-11-18 16:04:36,931 INFO L168 Benchmark]: Witness Printer took 56.58 ms. Allocated memory is still 1.8 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:04:36,932 INFO L336 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, 65 locations, 6 error locations. UNSAFE Result, 475.3s OverallTime, 86 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 134217728 SDtfs, -184267516 SDslu, -1553172864 SDs, 0 SdLazy, 1954735148 SolverSat, -115033500 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 198.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23231 GetRequests, 20245 SyntacticMatches, 1284 SemanticMatches, 1702 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1834001 ImplicationChecksByTransitivity, 465.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 96.0s InterpolantComputationTime, 2214 NumberOfCodeBlocks, 2214 NumberOfCodeBlocksAsserted, 86 NumberOfCheckSat, 2098 ConstructedInterpolants, 0 QuantifiedInterpolants, 1512841 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 85 InterpolantComputations, 17 PerfectInterpolantSequences, 251/1086 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 1051]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L985] EXPR, FCALL malloc(sizeof(SLL)) [L985] SLL* head = malloc(sizeof(SLL)); [L986] FCALL head->next = ((void*)0) [L987] FCALL head->data = 0 [L989] SLL* x = head; [L990] int marked = 0; [L993] COND TRUE __VERIFIER_nondet_int() || !marked [L996] EXPR, FCALL malloc(sizeof(SLL)) [L996] FCALL x->next = malloc(sizeof(SLL)) [L997] EXPR, FCALL x->next [L997] x = x->next [L998] FCALL x->next = ((void*)0) [L1000] COND TRUE __VERIFIER_nondet_int() [L1002] marked = 1 [L1005] COND TRUE \read(marked) [L1006] FCALL x->data = 1 [L993] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1011] x = head [L1013] COND FALSE !(!(((void*)0) != x)) [L1013] COND FALSE !(0) [L1014] marked = 0 [L1016] EXPR, FCALL x->next [L1016] x->next != ((void*)0) && x->next->data == 0 [L1016] EXPR, FCALL x->next [L1016] EXPR, FCALL x->next->data [L1016] x->next != ((void*)0) && x->next->data == 0 [L1016] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1021] EXPR, FCALL x->next [L1021] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1021] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1021] COND FALSE !(x->next != ((void*)0) && __VERIFIER_nondet_int()) [L1027] EXPR, FCALL malloc(sizeof(SLL)) [L1027] SLL* tmp = malloc(sizeof(SLL)); [L1028] FCALL tmp->data = 1 [L1029] FCALL tmp->next = ((void*)0) [L1030] EXPR, FCALL x->next [L1030] COND FALSE !(x->next == ((void*)0)) [L1034] EXPR, FCALL x->next [L1034] FCALL tmp->next = x->next [L1035] FCALL x->next = tmp [L1038] marked = 0 [L1039] x = head [L1041] x != ((void*)0) && x->data != 1 [L1041] EXPR, FCALL x->data [L1041] x != ((void*)0) && x->data != 1 [L1041] COND TRUE x != ((void*)0) && x->data != 1 [L1043] EXPR, FCALL x->data [L1043] marked = x->data [L1044] EXPR, FCALL x->data [L1044] COND FALSE !(!(x->data == 0)) [L1044] COND FALSE !(0) [L1045] COND FALSE !(!(marked == 0)) [L1045] COND FALSE !(0) [L1046] EXPR, FCALL x->next [L1046] x = x->next [L1041] x != ((void*)0) && x->data != 1 [L1041] EXPR, FCALL x->data [L1041] x != ((void*)0) && x->data != 1 [L1041] COND FALSE !(x != ((void*)0) && x->data != 1) [L1048] COND TRUE x != ((void*)0) [L1050] EXPR, FCALL x->data [L1050] marked = x->data [L1051] EXPR, FCALL x->data [L1051] COND TRUE !(x->data != 1) [L1051] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 357.70 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -160.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.39 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.94 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 416.99 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 11.5 GB. * CodeCheck took 475388.10 ms. Allocated memory was 1.1 GB in the beginning and 1.8 GB in the end (delta: 641.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -88.3 MB). Peak memory consumption was 553.5 MB. Max. memory is 11.5 GB. * Witness Printer took 56.58 ms. Allocated memory is still 1.8 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...