./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-simple/nested_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_bf1271d9-b192-4d1d-a177-ac0355d0543f/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bf1271d9-b192-4d1d-a177-ac0355d0543f/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bf1271d9-b192-4d1d-a177-ac0355d0543f/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bf1271d9-b192-4d1d-a177-ac0355d0543f/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/loop-simple/nested_2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bf1271d9-b192-4d1d-a177-ac0355d0543f/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bf1271d9-b192-4d1d-a177-ac0355d0543f/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 93ddc895418216afe230ea40e87acd63de5c2d0d ......................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 04:39:56,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:39:56,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:39:56,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:39:56,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:39:56,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:39:56,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:39:56,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:39:56,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:39:56,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:39:56,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:39:56,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:39:56,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:39:56,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:39:56,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:39:56,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:39:56,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:39:56,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:39:56,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:39:56,240 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:39:56,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:39:56,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:39:56,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:39:56,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:39:56,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:39:56,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:39:56,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:39:56,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:39:56,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:39:56,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:39:56,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:39:56,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:39:56,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:39:56,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:39:56,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:39:56,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:39:56,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:39:56,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:39:56,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:39:56,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:39:56,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:39:56,264 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bf1271d9-b192-4d1d-a177-ac0355d0543f/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-28 04:39:56,299 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:39:56,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:39:56,300 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 04:39:56,301 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-28 04:39:56,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:39:56,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:39:56,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:39:56,303 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 04:39:56,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:39:56,303 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 04:39:56,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:39:56,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 04:39:56,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:39:56,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 04:39:56,305 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 04:39:56,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 04:39:56,306 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:39:56,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 04:39:56,307 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:39:56,307 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:39:56,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:39:56,308 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:39:56,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:39:56,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:39:56,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:39:56,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 04:39:56,310 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:39:56,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:39:56,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 04:39:56,310 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_bf1271d9-b192-4d1d-a177-ac0355d0543f/bin/ukojak/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bf1271d9-b192-4d1d-a177-ac0355d0543f/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93ddc895418216afe230ea40e87acd63de5c2d0d [2020-11-28 04:39:56,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:39:56,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:39:56,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:39:56,674 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:39:56,676 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:39:56,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bf1271d9-b192-4d1d-a177-ac0355d0543f/bin/ukojak/../../sv-benchmarks/c/loop-simple/nested_2.c [2020-11-28 04:39:56,778 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bf1271d9-b192-4d1d-a177-ac0355d0543f/bin/ukojak/data/175d0f0df/4f0895812eb34423b1153742450fd85c/FLAG32395765d [2020-11-28 04:39:57,220 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:39:57,220 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bf1271d9-b192-4d1d-a177-ac0355d0543f/sv-benchmarks/c/loop-simple/nested_2.c [2020-11-28 04:39:57,243 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bf1271d9-b192-4d1d-a177-ac0355d0543f/bin/ukojak/data/175d0f0df/4f0895812eb34423b1153742450fd85c/FLAG32395765d [2020-11-28 04:39:57,634 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bf1271d9-b192-4d1d-a177-ac0355d0543f/bin/ukojak/data/175d0f0df/4f0895812eb34423b1153742450fd85c [2020-11-28 04:39:57,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:39:57,638 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:39:57,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:39:57,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:39:57,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:39:57,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:39:57" (1/1) ... [2020-11-28 04:39:57,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2024605e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:57, skipping insertion in model container [2020-11-28 04:39:57,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:39:57" (1/1) ... [2020-11-28 04:39:57,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:39:57,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:39:57,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:39:57,873 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:39:57,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:39:57,901 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:39:57,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:57 WrapperNode [2020-11-28 04:39:57,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:39:57,903 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:39:57,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:39:57,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:39:57,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:57" (1/1) ... [2020-11-28 04:39:57,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:57" (1/1) ... [2020-11-28 04:39:57,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:39:57,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:39:57,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:39:57,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:39:57,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:57" (1/1) ... [2020-11-28 04:39:57,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:57" (1/1) ... [2020-11-28 04:39:57,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:57" (1/1) ... [2020-11-28 04:39:57,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:57" (1/1) ... [2020-11-28 04:39:57,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:57" (1/1) ... [2020-11-28 04:39:57,954 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:57" (1/1) ... [2020-11-28 04:39:57,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:57" (1/1) ... [2020-11-28 04:39:57,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:39:57,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:39:57,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:39:57,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:39:57,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf1271d9-b192-4d1d-a177-ac0355d0543f/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:39:58,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:39:58,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:39:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 04:39:58,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 04:39:58,354 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:39:58,355 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-28 04:39:58,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:39:58 BoogieIcfgContainer [2020-11-28 04:39:58,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:39:58,358 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:39:58,359 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:39:58,370 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:39:58,370 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:39:58" (1/1) ... [2020-11-28 04:39:58,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:39:58,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:39:58,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 8 states and 10 transitions. [2020-11-28 04:39:58,419 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2020-11-28 04:39:58,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 04:39:58,422 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:39:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:39:58,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:39:58,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:39:58,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 9 states and 11 transitions. [2020-11-28 04:39:58,669 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2020-11-28 04:39:58,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 04:39:58,670 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:39:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:39:58,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:39:58,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:39:58,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 10 states and 13 transitions. [2020-11-28 04:39:58,764 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 13 transitions. [2020-11-28 04:39:58,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 04:39:58,767 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:39:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:39:58,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:39:58,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:39:58,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 11 states and 15 transitions. [2020-11-28 04:39:58,892 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2020-11-28 04:39:58,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 04:39:58,893 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:39:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:39:58,968 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 04:39:59,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:39:59,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 15 states and 23 transitions. [2020-11-28 04:39:59,432 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 23 transitions. [2020-11-28 04:39:59,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 04:39:59,433 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:39:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:39:59,516 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 04:39:59,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:39:59,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 16 states and 24 transitions. [2020-11-28 04:39:59,657 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 24 transitions. [2020-11-28 04:39:59,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 04:39:59,658 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:39:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:39:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 04:39:59,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:39:59,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 17 states and 25 transitions. [2020-11-28 04:39:59,903 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 25 transitions. [2020-11-28 04:39:59,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 04:39:59,904 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:39:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:00,008 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 04:40:00,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:00,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 18 states and 26 transitions. [2020-11-28 04:40:00,159 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 26 transitions. [2020-11-28 04:40:00,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 04:40:00,160 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:00,242 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 20 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 04:40:00,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:00,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 19 states and 26 transitions. [2020-11-28 04:40:00,461 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2020-11-28 04:40:00,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 04:40:00,462 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:00,561 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-11-28 04:40:01,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:01,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 23 states and 33 transitions. [2020-11-28 04:40:01,249 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2020-11-28 04:40:01,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 04:40:01,250 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:01,281 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-28 04:40:01,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:01,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 24 states and 34 transitions. [2020-11-28 04:40:01,495 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2020-11-28 04:40:01,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 04:40:01,496 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:01,548 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 65 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-28 04:40:01,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:01,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 25 states and 35 transitions. [2020-11-28 04:40:01,781 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-11-28 04:40:01,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 04:40:01,782 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:01,836 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 75 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-28 04:40:02,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:02,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 26 states and 36 transitions. [2020-11-28 04:40:02,048 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2020-11-28 04:40:02,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 04:40:02,048 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:02,078 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 85 proven. 15 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-28 04:40:02,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:02,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 27 states and 36 transitions. [2020-11-28 04:40:02,377 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2020-11-28 04:40:02,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 04:40:02,378 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:02,506 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-11-28 04:40:03,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:03,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 31 states and 43 transitions. [2020-11-28 04:40:03,138 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 43 transitions. [2020-11-28 04:40:03,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-28 04:40:03,139 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:03,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:03,185 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 99 proven. 3 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-11-28 04:40:03,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:03,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 32 states and 44 transitions. [2020-11-28 04:40:03,464 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 44 transitions. [2020-11-28 04:40:03,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-28 04:40:03,465 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:03,512 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 116 proven. 6 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-11-28 04:40:03,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:03,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 33 states and 45 transitions. [2020-11-28 04:40:03,787 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2020-11-28 04:40:03,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 04:40:03,787 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:03,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:03,828 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 133 proven. 10 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-11-28 04:40:04,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:04,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 34 states and 46 transitions. [2020-11-28 04:40:04,114 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 46 transitions. [2020-11-28 04:40:04,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 04:40:04,114 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:04,162 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 150 proven. 15 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-11-28 04:40:04,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:04,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 35 states and 46 transitions. [2020-11-28 04:40:04,450 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2020-11-28 04:40:04,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 04:40:04,451 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:04,593 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-11-28 04:40:05,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:05,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 39 states and 53 transitions. [2020-11-28 04:40:05,453 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2020-11-28 04:40:05,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-28 04:40:05,454 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:05,499 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 143 proven. 3 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-11-28 04:40:05,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:05,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 40 states and 54 transitions. [2020-11-28 04:40:05,782 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2020-11-28 04:40:05,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-28 04:40:05,783 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:05,810 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 167 proven. 6 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-11-28 04:40:06,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:06,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 41 states and 55 transitions. [2020-11-28 04:40:06,085 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 55 transitions. [2020-11-28 04:40:06,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-28 04:40:06,086 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:06,127 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 191 proven. 10 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-11-28 04:40:06,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:06,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 42 states and 56 transitions. [2020-11-28 04:40:06,402 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 56 transitions. [2020-11-28 04:40:06,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-28 04:40:06,403 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:06,449 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 215 proven. 15 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-11-28 04:40:06,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:06,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 43 states and 56 transitions. [2020-11-28 04:40:06,696 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 56 transitions. [2020-11-28 04:40:06,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-28 04:40:06,697 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:06,889 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 393 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-11-28 04:40:07,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:07,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 47 states and 62 transitions. [2020-11-28 04:40:07,719 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-11-28 04:40:07,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-28 04:40:07,719 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:07,753 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 187 proven. 3 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-11-28 04:40:07,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:07,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 48 states and 63 transitions. [2020-11-28 04:40:07,996 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 63 transitions. [2020-11-28 04:40:07,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-28 04:40:07,996 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:08,029 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 218 proven. 6 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-11-28 04:40:08,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:08,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 49 states and 64 transitions. [2020-11-28 04:40:08,301 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 64 transitions. [2020-11-28 04:40:08,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-28 04:40:08,302 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:08,323 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 249 proven. 10 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-11-28 04:40:08,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:08,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 50 states and 65 transitions. [2020-11-28 04:40:08,597 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 65 transitions. [2020-11-28 04:40:08,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-28 04:40:08,597 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:08,628 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 280 proven. 15 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-11-28 04:40:08,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:08,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 51 states and 65 transitions. [2020-11-28 04:40:08,937 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2020-11-28 04:40:08,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-28 04:40:08,938 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:08,972 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 111 proven. 3 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-11-28 04:40:09,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:09,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 52 states and 66 transitions. [2020-11-28 04:40:09,229 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2020-11-28 04:40:09,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-28 04:40:09,230 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:09,253 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 146 proven. 6 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-11-28 04:40:09,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:09,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 53 states and 67 transitions. [2020-11-28 04:40:09,453 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2020-11-28 04:40:09,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-28 04:40:09,454 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:09,476 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 181 proven. 10 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-11-28 04:40:09,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:09,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 54 states and 68 transitions. [2020-11-28 04:40:09,779 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-11-28 04:40:09,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-28 04:40:09,779 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:09,802 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 216 proven. 15 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-11-28 04:40:10,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:10,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 55 states and 68 transitions. [2020-11-28 04:40:10,173 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2020-11-28 04:40:10,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-28 04:40:10,173 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:11,199 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 0 proven. 777 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-11-28 04:40:14,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:14,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 53 states and 66 transitions. [2020-11-28 04:40:14,020 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2020-11-28 04:40:14,020 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 04:40:14,020 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 34 iterations. [2020-11-28 04:40:14,026 INFO L765 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2020-11-28 04:40:14,284 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 10 [2020-11-28 04:40:14,286 INFO L569 CodeCheckObserver]: Invariant with dag size 10 [2020-11-28 04:40:14,296 INFO L569 CodeCheckObserver]: Invariant with dag size 10 [2020-11-28 04:40:14,297 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-11-28 04:40:14,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:40:14 ImpRootNode [2020-11-28 04:40:14,297 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:40:14,298 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:40:14,298 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:40:14,298 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:40:14,299 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:39:58" (3/4) ... [2020-11-28 04:40:14,302 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 04:40:14,310 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-28 04:40:14,311 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-28 04:40:14,311 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 04:40:14,311 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 04:40:14,349 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bf1271d9-b192-4d1d-a177-ac0355d0543f/bin/ukojak/witness.graphml [2020-11-28 04:40:14,350 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:40:14,351 INFO L168 Benchmark]: Toolchain (without parser) took 16712.14 ms. Allocated memory was 94.4 MB in the beginning and 293.6 MB in the end (delta: 199.2 MB). Free memory was 64.7 MB in the beginning and 231.4 MB in the end (delta: -166.7 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:14,352 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 94.4 MB. Free memory was 54.1 MB in the beginning and 54.0 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:40:14,353 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.24 ms. Allocated memory is still 94.4 MB. Free memory was 64.7 MB in the beginning and 71.9 MB in the end (delta: -7.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:14,354 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.18 ms. Allocated memory is still 94.4 MB. Free memory was 71.9 MB in the beginning and 70.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:40:14,354 INFO L168 Benchmark]: Boogie Preprocessor took 21.27 ms. Allocated memory is still 94.4 MB. Free memory was 70.7 MB in the beginning and 69.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:14,355 INFO L168 Benchmark]: RCFGBuilder took 399.28 ms. Allocated memory is still 94.4 MB. Free memory was 69.5 MB in the beginning and 56.1 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:14,356 INFO L168 Benchmark]: CodeCheck took 15938.97 ms. Allocated memory was 94.4 MB in the beginning and 293.6 MB in the end (delta: 199.2 MB). Free memory was 56.1 MB in the beginning and 233.5 MB in the end (delta: -177.4 MB). Peak memory consumption was 130.7 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:14,357 INFO L168 Benchmark]: Witness Printer took 51.90 ms. Allocated memory is still 293.6 MB. Free memory was 233.5 MB in the beginning and 231.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:14,361 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15.6s, OverallIterations: 34, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 SDtfs, -2078210042 SDslu, 0 SDs, 0 SdLazy, 1861863422 SolverSat, -562712484 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6911 GetRequests, 6526 SyntacticMatches, 145 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26479 ImplicationChecksByTransitivity, 12.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 977 NumberOfCodeBlocks, 977 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 944 ConstructedInterpolants, 0 QuantifiedInterpolants, 54681 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 33 InterpolantComputations, 2 PerfectInterpolantSequences, 8876/10593 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((a <= 6 && b <= 6) && 5 < b) || a <= 5 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: a <= 4 || (b <= 6 && a <= 5) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 94.4 MB. Free memory was 54.1 MB in the beginning and 54.0 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 261.24 ms. Allocated memory is still 94.4 MB. Free memory was 64.7 MB in the beginning and 71.9 MB in the end (delta: -7.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.18 ms. Allocated memory is still 94.4 MB. Free memory was 71.9 MB in the beginning and 70.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.27 ms. Allocated memory is still 94.4 MB. Free memory was 70.7 MB in the beginning and 69.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 399.28 ms. Allocated memory is still 94.4 MB. Free memory was 69.5 MB in the beginning and 56.1 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * CodeCheck took 15938.97 ms. Allocated memory was 94.4 MB in the beginning and 293.6 MB in the end (delta: 199.2 MB). Free memory was 56.1 MB in the beginning and 233.5 MB in the end (delta: -177.4 MB). Peak memory consumption was 130.7 MB. Max. memory is 16.1 GB. * Witness Printer took 51.90 ms. Allocated memory is still 293.6 MB. Free memory was 233.5 MB in the beginning and 231.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...