./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-queue_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_19258381-258c-4105-9f04-1d1021f7dc6a/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_19258381-258c-4105-9f04-1d1021f7dc6a/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_19258381-258c-4105-9f04-1d1021f7dc6a/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_19258381-258c-4105-9f04-1d1021f7dc6a/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-queue_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_19258381-258c-4105-9f04-1d1021f7dc6a/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_19258381-258c-4105-9f04-1d1021f7dc6a/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 e5083763cd1026dac92f37bc5a05779baf01a71b ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-1dbac8b [2018-11-09 23:18:10,354 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-09 23:18:10,354 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-09 23:18:10,360 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-09 23:18:10,361 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-09 23:18:10,361 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-09 23:18:10,362 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-09 23:18:10,363 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-09 23:18:10,364 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-09 23:18:10,365 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-09 23:18:10,366 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-09 23:18:10,366 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-09 23:18:10,366 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-09 23:18:10,367 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-09 23:18:10,368 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-09 23:18:10,368 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-09 23:18:10,369 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-09 23:18:10,370 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-09 23:18:10,371 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-09 23:18:10,372 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-09 23:18:10,373 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-09 23:18:10,374 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-09 23:18:10,376 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-09 23:18:10,376 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-09 23:18:10,376 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-09 23:18:10,377 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-09 23:18:10,377 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-09 23:18:10,378 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-09 23:18:10,378 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-09 23:18:10,379 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-09 23:18:10,379 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-09 23:18:10,380 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-09 23:18:10,380 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-09 23:18:10,380 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-09 23:18:10,381 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-09 23:18:10,381 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-09 23:18:10,382 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_19258381-258c-4105-9f04-1d1021f7dc6a/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-11-09 23:18:10,389 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-09 23:18:10,389 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-09 23:18:10,390 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-09 23:18:10,390 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-09 23:18:10,391 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-09 23:18:10,391 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-09 23:18:10,391 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-09 23:18:10,391 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-09 23:18:10,391 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-09 23:18:10,392 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-09 23:18:10,392 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-09 23:18:10,392 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-09 23:18:10,392 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-09 23:18:10,392 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-09 23:18:10,392 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-09 23:18:10,392 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-09 23:18:10,393 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-09 23:18:10,393 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-09 23:18:10,393 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-09 23:18:10,393 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-09 23:18:10,393 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-09 23:18:10,394 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-09 23:18:10,394 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-09 23:18:10,394 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-09 23:18:10,394 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-09 23:18:10,394 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-09 23:18:10,394 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-09 23:18:10,394 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-09 23:18:10,395 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_19258381-258c-4105-9f04-1d1021f7dc6a/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 -> e5083763cd1026dac92f37bc5a05779baf01a71b [2018-11-09 23:18:10,421 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-09 23:18:10,430 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-09 23:18:10,432 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-09 23:18:10,433 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-09 23:18:10,434 INFO L276 PluginConnector]: CDTParser initialized [2018-11-09 23:18:10,434 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_19258381-258c-4105-9f04-1d1021f7dc6a/bin-2019/ukojak/../../sv-benchmarks/c/forester-heap/sll-queue_false-unreach-call_false-valid-memcleanup.i [2018-11-09 23:18:10,477 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_19258381-258c-4105-9f04-1d1021f7dc6a/bin-2019/ukojak/data/b39abcc1d/0e178d2c09ee4f78a4140b11b14b6db5/FLAGc8b332ca7 [2018-11-09 23:18:10,906 INFO L298 CDTParser]: Found 1 translation units. [2018-11-09 23:18:10,906 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_19258381-258c-4105-9f04-1d1021f7dc6a/sv-benchmarks/c/forester-heap/sll-queue_false-unreach-call_false-valid-memcleanup.i [2018-11-09 23:18:10,913 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_19258381-258c-4105-9f04-1d1021f7dc6a/bin-2019/ukojak/data/b39abcc1d/0e178d2c09ee4f78a4140b11b14b6db5/FLAGc8b332ca7 [2018-11-09 23:18:10,921 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_19258381-258c-4105-9f04-1d1021f7dc6a/bin-2019/ukojak/data/b39abcc1d/0e178d2c09ee4f78a4140b11b14b6db5 [2018-11-09 23:18:10,923 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-09 23:18:10,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-09 23:18:10,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-09 23:18:10,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-09 23:18:10,928 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-09 23:18:10,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 11:18:10" (1/1) ... [2018-11-09 23:18:10,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1180c501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:18:10, skipping insertion in model container [2018-11-09 23:18:10,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 11:18:10" (1/1) ... [2018-11-09 23:18:10,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-09 23:18:10,965 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-09 23:18:11,139 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-09 23:18:11,144 INFO L189 MainTranslator]: Completed pre-run [2018-11-09 23:18:11,173 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-09 23:18:11,206 INFO L193 MainTranslator]: Completed translation [2018-11-09 23:18:11,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:18:11 WrapperNode [2018-11-09 23:18:11,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-09 23:18:11,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-09 23:18:11,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-09 23:18:11,207 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-09 23:18:11,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:18:11" (1/1) ... [2018-11-09 23:18:11,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:18:11" (1/1) ... [2018-11-09 23:18:11,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-09 23:18:11,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-09 23:18:11,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-09 23:18:11,276 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-09 23:18:11,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:18:11" (1/1) ... [2018-11-09 23:18:11,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:18:11" (1/1) ... [2018-11-09 23:18:11,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:18:11" (1/1) ... [2018-11-09 23:18:11,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:18:11" (1/1) ... [2018-11-09 23:18:11,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:18:11" (1/1) ... [2018-11-09 23:18:11,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:18:11" (1/1) ... [2018-11-09 23:18:11,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:18:11" (1/1) ... [2018-11-09 23:18:11,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-09 23:18:11,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-09 23:18:11,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-09 23:18:11,302 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-09 23:18:11,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:18:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_19258381-258c-4105-9f04-1d1021f7dc6a/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 [2018-11-09 23:18:11,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-09 23:18:11,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-09 23:18:11,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-09 23:18:11,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-09 23:18:11,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-09 23:18:11,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-09 23:18:11,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-09 23:18:11,822 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-09 23:18:11,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 11:18:11 BoogieIcfgContainer [2018-11-09 23:18:11,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-09 23:18:11,823 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-09 23:18:11,823 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-09 23:18:11,830 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-09 23:18:11,830 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 11:18:11" (1/1) ... [2018-11-09 23:18:11,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-09 23:18:11,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:11,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 84 states and 134 transitions. [2018-11-09 23:18:11,862 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 134 transitions. [2018-11-09 23:18:11,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-11-09 23:18:11,864 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:18:11,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:11,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 84 states and 129 transitions. [2018-11-09 23:18:11,946 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 129 transitions. [2018-11-09 23:18:11,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-11-09 23:18:11,946 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:11,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:18:12,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:12,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 88 states and 135 transitions. [2018-11-09 23:18:12,016 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 135 transitions. [2018-11-09 23:18:12,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-11-09 23:18:12,016 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:12,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:18:12,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:12,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 90 states and 134 transitions. [2018-11-09 23:18:12,055 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 134 transitions. [2018-11-09 23:18:12,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-09 23:18:12,055 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:12,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:18:12,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:12,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 93 states and 136 transitions. [2018-11-09 23:18:12,190 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 136 transitions. [2018-11-09 23:18:12,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-09 23:18:12,191 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:12,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:18:12,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:12,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 99 states and 142 transitions. [2018-11-09 23:18:12,280 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 142 transitions. [2018-11-09 23:18:12,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-09 23:18:12,281 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:18:12,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:12,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 100 states and 140 transitions. [2018-11-09 23:18:12,302 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 140 transitions. [2018-11-09 23:18:12,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-09 23:18:12,302 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:12,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:18:12,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:12,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 101 states and 138 transitions. [2018-11-09 23:18:12,331 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 138 transitions. [2018-11-09 23:18:12,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-09 23:18:12,332 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:12,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-09 23:18:12,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:12,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 86 states and 119 transitions. [2018-11-09 23:18:12,381 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 119 transitions. [2018-11-09 23:18:12,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-09 23:18:12,382 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:12,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:18:12,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:12,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 91 states and 122 transitions. [2018-11-09 23:18:12,464 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 122 transitions. [2018-11-09 23:18:12,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-09 23:18:12,464 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:12,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-09 23:18:12,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:12,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 89 states and 120 transitions. [2018-11-09 23:18:12,531 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2018-11-09 23:18:12,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-09 23:18:12,531 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:12,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:18:12,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:12,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 101 states and 132 transitions. [2018-11-09 23:18:12,754 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 132 transitions. [2018-11-09 23:18:12,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-09 23:18:12,754 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:12,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-09 23:18:13,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:13,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 112 states and 149 transitions. [2018-11-09 23:18:13,172 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 149 transitions. [2018-11-09 23:18:13,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-09 23:18:13,174 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:13,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:18:13,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:13,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 131 states and 171 transitions. [2018-11-09 23:18:13,856 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 171 transitions. [2018-11-09 23:18:13,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-09 23:18:13,857 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:13,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:18:14,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:14,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 133 states and 174 transitions. [2018-11-09 23:18:14,208 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 174 transitions. [2018-11-09 23:18:14,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-09 23:18:14,209 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:14,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:18:14,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:14,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 136 states and 179 transitions. [2018-11-09 23:18:14,692 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 179 transitions. [2018-11-09 23:18:14,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-09 23:18:14,693 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:14,716 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-09 23:18:14,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:14,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 139 states and 183 transitions. [2018-11-09 23:18:14,828 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 183 transitions. [2018-11-09 23:18:14,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-09 23:18:14,829 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:14,871 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-09 23:18:14,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:14,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 143 states and 189 transitions. [2018-11-09 23:18:14,962 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 189 transitions. [2018-11-09 23:18:14,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-09 23:18:14,962 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:15,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:18:17,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:17,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 169 states and 228 transitions. [2018-11-09 23:18:17,210 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 228 transitions. [2018-11-09 23:18:17,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-09 23:18:17,210 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:17,337 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:18:18,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:18,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 195 states and 267 transitions. [2018-11-09 23:18:18,357 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 267 transitions. [2018-11-09 23:18:18,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-09 23:18:18,358 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:18,425 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:18:18,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:18,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 207 states and 277 transitions. [2018-11-09 23:18:18,859 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 277 transitions. [2018-11-09 23:18:18,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-09 23:18:18,859 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:19,319 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:18:21,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:21,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 236 states and 315 transitions. [2018-11-09 23:18:21,147 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 315 transitions. [2018-11-09 23:18:21,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-09 23:18:21,147 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:21,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:18:24,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:24,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 257 states and 351 transitions. [2018-11-09 23:18:24,750 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 351 transitions. [2018-11-09 23:18:24,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-09 23:18:24,751 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-09 23:18:25,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:25,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 264 states and 361 transitions. [2018-11-09 23:18:25,900 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 361 transitions. [2018-11-09 23:18:25,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-09 23:18:25,900 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:25,985 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:18:26,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:26,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 276 states and 374 transitions. [2018-11-09 23:18:26,510 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 374 transitions. [2018-11-09 23:18:26,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-09 23:18:26,511 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:26,715 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:18:27,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:27,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 291 states and 395 transitions. [2018-11-09 23:18:27,500 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 395 transitions. [2018-11-09 23:18:27,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-09 23:18:27,500 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:27,669 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:18:28,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:28,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 303 states and 410 transitions. [2018-11-09 23:18:28,369 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 410 transitions. [2018-11-09 23:18:28,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-09 23:18:28,370 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:18:33,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:33,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 325 states and 439 transitions. [2018-11-09 23:18:33,429 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 439 transitions. [2018-11-09 23:18:33,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-09 23:18:33,429 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:33,454 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-09 23:18:34,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:34,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 327 states and 443 transitions. [2018-11-09 23:18:34,147 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 443 transitions. [2018-11-09 23:18:34,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-09 23:18:34,148 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:34,822 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:18:37,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:37,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 357 states and 486 transitions. [2018-11-09 23:18:37,717 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 486 transitions. [2018-11-09 23:18:37,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-09 23:18:37,717 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:38,829 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:18:43,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:43,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 390 states and 536 transitions. [2018-11-09 23:18:43,704 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 536 transitions. [2018-11-09 23:18:43,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-09 23:18:43,705 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:45,812 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:18:54,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:54,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 410 states and 571 transitions. [2018-11-09 23:18:54,722 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 571 transitions. [2018-11-09 23:18:54,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-09 23:18:54,723 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:54,953 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-09 23:18:57,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:57,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 415 states and 581 transitions. [2018-11-09 23:18:57,306 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 581 transitions. [2018-11-09 23:18:57,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-09 23:18:57,306 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:57,507 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-09 23:18:58,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:58,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 201 states and 259 transitions. [2018-11-09 23:18:58,601 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 259 transitions. [2018-11-09 23:18:58,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-09 23:18:58,602 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-09 23:18:58,634 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-09 23:18:59,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-09 23:18:59,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 209 states and 272 transitions. [2018-11-09 23:18:59,764 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 272 transitions. [2018-11-09 23:18:59,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-09 23:18:59,765 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-09 23:18:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:18:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:18:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:18:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-09 23:18:59,978 WARN L496 CodeCheckObserver]: This program is UNSAFE, Check terminated with 35 iterations. [2018-11-09 23:19:00,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 09.11 11:19:00 ImpRootNode [2018-11-09 23:19:00,014 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-09 23:19:00,014 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-09 23:19:00,014 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-09 23:19:00,014 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-09 23:19:00,015 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 11:18:11" (3/4) ... [2018-11-09 23:19:00,018 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-09 23:19:00,079 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_19258381-258c-4105-9f04-1d1021f7dc6a/bin-2019/ukojak/witness.graphml [2018-11-09 23:19:00,079 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-09 23:19:00,079 INFO L168 Benchmark]: Toolchain (without parser) took 49155.64 ms. Allocated memory was 1.0 GB in the beginning and 1.8 GB in the end (delta: 782.2 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -94.8 MB). Peak memory consumption was 687.5 MB. Max. memory is 11.5 GB. [2018-11-09 23:19:00,080 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-09 23:19:00,080 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.66 ms. Allocated memory is still 1.0 GB. Free memory was 956.6 MB in the beginning and 932.4 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2018-11-09 23:19:00,081 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 932.4 MB in the beginning and 1.1 GB in the end (delta: -202.2 MB). Peak memory consumption was 15.9 MB. Max. memory is 11.5 GB. [2018-11-09 23:19:00,081 INFO L168 Benchmark]: Boogie Preprocessor took 25.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-09 23:19:00,081 INFO L168 Benchmark]: RCFGBuilder took 521.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 66.7 MB). Peak memory consumption was 66.7 MB. Max. memory is 11.5 GB. [2018-11-09 23:19:00,082 INFO L168 Benchmark]: CodeCheck took 48190.54 ms. Allocated memory was 1.2 GB in the beginning and 1.8 GB in the end (delta: 644.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 658.2 MB. Max. memory is 11.5 GB. [2018-11-09 23:19:00,082 INFO L168 Benchmark]: Witness Printer took 64.87 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. [2018-11-09 23:19:00,084 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, 130 locations, 14 error locations. UNSAFE Result, 48.1s OverallTime, 35 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: -379401952 SDtfs, -1836181884 SDslu, 677554108 SDs, 0 SdLazy, -1621945786 SolverSat, -953618466 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7990 GetRequests, 7118 SyntacticMatches, 272 SemanticMatches, 600 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213834 ImplicationChecksByTransitivity, 45.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 986 NumberOfCodeBlocks, 986 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 904 ConstructedInterpolants, 0 QuantifiedInterpolants, 600853 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 34 InterpolantComputations, 14 PerfectInterpolantSequences, 74/418 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: 1035]: 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 [L988] SLL* item = head; [L989] int status = 0; [L991] COND TRUE __VERIFIER_nondet_int() [L993] EXPR, FCALL malloc(sizeof(SLL)) [L993] FCALL item->next = malloc(sizeof(SLL)) [L994] EXPR, FCALL item->next [L994] item = item->next [L995] FCALL item->next = ((void*)0) [L997] COND TRUE !status [L999] FCALL item->data = 1 [L1000] status = 1 [L1013] COND FALSE !(!(head != ((void*)0))) [L1013] COND FALSE !(0) [L1014] COND FALSE !(!(item != ((void*)0))) [L1014] COND FALSE !(0) [L991] COND TRUE __VERIFIER_nondet_int() [L993] EXPR, FCALL malloc(sizeof(SLL)) [L993] FCALL item->next = malloc(sizeof(SLL)) [L994] EXPR, FCALL item->next [L994] item = item->next [L995] FCALL item->next = ((void*)0) [L997] COND FALSE !(!status) [L1002] COND TRUE status == 1 [L1004] FCALL item->data = 2 [L1005] status = 2 [L1013] COND FALSE !(!(head != ((void*)0))) [L1013] COND FALSE !(0) [L1014] COND FALSE !(!(item != ((void*)0))) [L1014] COND FALSE !(0) [L991] COND TRUE __VERIFIER_nondet_int() [L993] EXPR, FCALL malloc(sizeof(SLL)) [L993] FCALL item->next = malloc(sizeof(SLL)) [L994] EXPR, FCALL item->next [L994] item = item->next [L995] FCALL item->next = ((void*)0) [L997] COND FALSE !(!status) [L1002] COND FALSE !(status == 1) [L1007] COND TRUE status >= 2 [L1009] FCALL item->data = 3 [L1010] status = 3 [L1013] COND FALSE !(!(head != ((void*)0))) [L1013] COND FALSE !(0) [L1014] COND FALSE !(!(item != ((void*)0))) [L1014] COND FALSE !(0) [L991] COND FALSE !(__VERIFIER_nondet_int()) [L1017] COND FALSE !(!(head != ((void*)0))) [L1017] COND FALSE !(0) [L1018] COND FALSE !(status == 1) [L1023] COND FALSE !(status == 2) [L1029] COND TRUE status == 3 [L1031] COND FALSE !(!(head != ((void*)0))) [L1031] COND FALSE !(0) [L1032] EXPR, FCALL head->next [L1032] COND FALSE !(!(head->next != ((void*)0))) [L1032] COND FALSE !(0) [L1033] EXPR, FCALL head->next [L1033] EXPR, FCALL head->next->next [L1033] COND FALSE !(!(head->next->next != ((void*)0))) [L1033] COND FALSE !(0) [L1034] EXPR, FCALL head->next [L1034] EXPR, FCALL head->next->next [L1034] EXPR, FCALL head->next->next->next [L1034] COND FALSE !(!(head->next->next->next != ((void*)0))) [L1034] COND FALSE !(0) [L1035] EXPR, FCALL head->next [L1035] EXPR, FCALL head->next->next [L1035] EXPR, FCALL head->next->next->next [L1035] EXPR, FCALL head->next->next->next->data [L1035] COND TRUE !(head->next->next->next->data != 3) [L1035] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 281.66 ms. Allocated memory is still 1.0 GB. Free memory was 956.6 MB in the beginning and 932.4 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 69.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 932.4 MB in the beginning and 1.1 GB in the end (delta: -202.2 MB). Peak memory consumption was 15.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 521.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 66.7 MB). Peak memory consumption was 66.7 MB. Max. memory is 11.5 GB. * CodeCheck took 48190.54 ms. Allocated memory was 1.2 GB in the beginning and 1.8 GB in the end (delta: 644.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 658.2 MB. Max. memory is 11.5 GB. * Witness Printer took 64.87 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...