./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/heap-manipulation/tree_false-unreach-call_false-valid-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_221c632b-9a56-46df-a0f7-30dfb21fb206/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_221c632b-9a56-46df-a0f7-30dfb21fb206/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_221c632b-9a56-46df-a0f7-30dfb21fb206/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_221c632b-9a56-46df-a0f7-30dfb21fb206/bin-2019/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/tree_false-unreach-call_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_221c632b-9a56-46df-a0f7-30dfb21fb206/bin-2019/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_221c632b-9a56-46df-a0f7-30dfb21fb206/bin-2019/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b50a14aaadb91f0d2171e26e1cac3b7310be0682 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-01 18:52:59,465 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 18:52:59,467 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 18:52:59,475 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 18:52:59,475 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 18:52:59,476 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 18:52:59,477 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 18:52:59,478 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 18:52:59,479 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 18:52:59,480 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 18:52:59,480 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 18:52:59,480 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 18:52:59,481 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 18:52:59,482 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 18:52:59,482 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 18:52:59,483 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 18:52:59,484 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 18:52:59,485 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 18:52:59,486 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 18:52:59,487 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 18:52:59,488 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 18:52:59,489 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 18:52:59,490 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 18:52:59,491 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 18:52:59,491 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 18:52:59,491 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 18:52:59,492 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 18:52:59,493 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 18:52:59,493 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 18:52:59,494 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 18:52:59,494 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 18:52:59,495 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 18:52:59,495 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 18:52:59,495 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 18:52:59,496 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 18:52:59,496 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 18:52:59,496 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_221c632b-9a56-46df-a0f7-30dfb21fb206/bin-2019/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2018-12-01 18:52:59,506 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 18:52:59,506 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 18:52:59,507 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 18:52:59,507 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 18:52:59,508 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 18:52:59,508 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 18:52:59,508 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-01 18:52:59,508 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 18:52:59,508 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 18:52:59,508 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 18:52:59,508 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-01 18:52:59,508 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-01 18:52:59,508 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-01 18:52:59,508 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 18:52:59,508 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 18:52:59,509 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 18:52:59,509 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-12-01 18:52:59,509 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-12-01 18:52:59,509 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 18:52:59,509 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 18:52:59,509 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-12-01 18:52:59,509 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 18:52:59,510 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 18:52:59,510 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-12-01 18:52:59,510 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 18:52:59,510 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in 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_221c632b-9a56-46df-a0f7-30dfb21fb206/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b50a14aaadb91f0d2171e26e1cac3b7310be0682 [2018-12-01 18:52:59,533 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 18:52:59,542 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 18:52:59,545 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 18:52:59,546 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 18:52:59,546 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 18:52:59,547 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_221c632b-9a56-46df-a0f7-30dfb21fb206/bin-2019/ukojak/../../sv-benchmarks/c/heap-manipulation/tree_false-unreach-call_false-valid-deref.i [2018-12-01 18:52:59,587 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_221c632b-9a56-46df-a0f7-30dfb21fb206/bin-2019/ukojak/data/b5af4c140/482581c977794ef0925640ca1906dff5/FLAGa73939bad [2018-12-01 18:53:00,045 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 18:53:00,046 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_221c632b-9a56-46df-a0f7-30dfb21fb206/sv-benchmarks/c/heap-manipulation/tree_false-unreach-call_false-valid-deref.i [2018-12-01 18:53:00,051 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_221c632b-9a56-46df-a0f7-30dfb21fb206/bin-2019/ukojak/data/b5af4c140/482581c977794ef0925640ca1906dff5/FLAGa73939bad [2018-12-01 18:53:00,060 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_221c632b-9a56-46df-a0f7-30dfb21fb206/bin-2019/ukojak/data/b5af4c140/482581c977794ef0925640ca1906dff5 [2018-12-01 18:53:00,061 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 18:53:00,062 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 18:53:00,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 18:53:00,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 18:53:00,065 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 18:53:00,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:53:00" (1/1) ... [2018-12-01 18:53:00,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb8ddb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:53:00, skipping insertion in model container [2018-12-01 18:53:00,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:53:00" (1/1) ... [2018-12-01 18:53:00,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 18:53:00,094 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 18:53:00,265 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 18:53:00,302 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 18:53:00,333 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 18:53:00,361 INFO L195 MainTranslator]: Completed translation [2018-12-01 18:53:00,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:53:00 WrapperNode [2018-12-01 18:53:00,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 18:53:00,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 18:53:00,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 18:53:00,362 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 18:53:00,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:53:00" (1/1) ... [2018-12-01 18:53:00,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:53:00" (1/1) ... [2018-12-01 18:53:00,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 18:53:00,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 18:53:00,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 18:53:00,398 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 18:53:00,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:53:00" (1/1) ... [2018-12-01 18:53:00,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:53:00" (1/1) ... [2018-12-01 18:53:00,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:53:00" (1/1) ... [2018-12-01 18:53:00,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:53:00" (1/1) ... [2018-12-01 18:53:00,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:53:00" (1/1) ... [2018-12-01 18:53:00,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:53:00" (1/1) ... [2018-12-01 18:53:00,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:53:00" (1/1) ... [2018-12-01 18:53:00,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 18:53:00,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 18:53:00,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 18:53:00,418 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 18:53:00,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:53:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_221c632b-9a56-46df-a0f7-30dfb21fb206/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 [2018-12-01 18:53:00,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-01 18:53:00,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-01 18:53:00,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-01 18:53:00,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-01 18:53:00,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-01 18:53:00,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-01 18:53:00,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 18:53:00,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 18:53:00,821 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 18:53:00,822 INFO L280 CfgBuilder]: Removed 27 assue(true) statements. [2018-12-01 18:53:00,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:53:00 BoogieIcfgContainer [2018-12-01 18:53:00,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 18:53:00,822 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-12-01 18:53:00,823 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-12-01 18:53:00,829 INFO L276 PluginConnector]: CodeCheck initialized [2018-12-01 18:53:00,830 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:53:00" (1/1) ... [2018-12-01 18:53:00,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:53:00,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:00,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 112 states and 129 transitions. [2018-12-01 18:53:00,864 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 129 transitions. [2018-12-01 18:53:00,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-01 18:53:00,866 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:00,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:00,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:00,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 111 states and 127 transitions. [2018-12-01 18:53:00,965 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2018-12-01 18:53:00,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-01 18:53:00,965 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:00,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:01,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:01,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 110 states and 126 transitions. [2018-12-01 18:53:01,040 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 126 transitions. [2018-12-01 18:53:01,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-01 18:53:01,040 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:01,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:01,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:01,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 109 states and 125 transitions. [2018-12-01 18:53:01,063 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2018-12-01 18:53:01,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-01 18:53:01,064 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:01,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:01,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:01,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 108 states and 124 transitions. [2018-12-01 18:53:01,087 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2018-12-01 18:53:01,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-01 18:53:01,087 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:01,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:01,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:01,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 111 states and 129 transitions. [2018-12-01 18:53:01,127 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 129 transitions. [2018-12-01 18:53:01,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-01 18:53:01,127 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:01,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:01,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:01,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 116 states and 138 transitions. [2018-12-01 18:53:01,221 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 138 transitions. [2018-12-01 18:53:01,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-01 18:53:01,223 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:01,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:01,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:01,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 119 states and 142 transitions. [2018-12-01 18:53:01,419 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2018-12-01 18:53:01,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-01 18:53:01,420 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:01,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:01,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:01,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 121 states and 145 transitions. [2018-12-01 18:53:01,501 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 145 transitions. [2018-12-01 18:53:01,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-01 18:53:01,502 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:01,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:01,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:01,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 123 states and 150 transitions. [2018-12-01 18:53:01,571 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 150 transitions. [2018-12-01 18:53:01,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-01 18:53:01,571 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:01,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:01,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 123 states and 148 transitions. [2018-12-01 18:53:01,578 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 148 transitions. [2018-12-01 18:53:01,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-01 18:53:01,578 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:01,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:01,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:01,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 125 states and 150 transitions. [2018-12-01 18:53:01,747 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 150 transitions. [2018-12-01 18:53:01,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-01 18:53:01,748 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:01,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:01,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:01,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 127 states and 154 transitions. [2018-12-01 18:53:01,857 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 154 transitions. [2018-12-01 18:53:01,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-01 18:53:01,857 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:01,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:02,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:02,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 131 states and 163 transitions. [2018-12-01 18:53:02,125 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 163 transitions. [2018-12-01 18:53:02,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-01 18:53:02,125 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:02,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:02,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:02,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 133 states and 165 transitions. [2018-12-01 18:53:02,308 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 165 transitions. [2018-12-01 18:53:02,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-01 18:53:02,309 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:02,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-01 18:53:02,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:02,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 132 states and 164 transitions. [2018-12-01 18:53:02,330 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 164 transitions. [2018-12-01 18:53:02,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-01 18:53:02,331 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:02,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:02,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:02,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 131 states and 163 transitions. [2018-12-01 18:53:02,598 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 163 transitions. [2018-12-01 18:53:02,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-01 18:53:02,598 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:02,670 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:02,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:02,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 135 states and 169 transitions. [2018-12-01 18:53:02,997 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 169 transitions. [2018-12-01 18:53:02,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-01 18:53:02,997 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:03,128 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:03,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 139 states and 178 transitions. [2018-12-01 18:53:03,727 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 178 transitions. [2018-12-01 18:53:03,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-01 18:53:03,727 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:03,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-01 18:53:04,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:04,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 141 states and 182 transitions. [2018-12-01 18:53:04,295 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 182 transitions. [2018-12-01 18:53:04,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-01 18:53:04,296 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:04,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-01 18:53:05,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:05,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 143 states and 184 transitions. [2018-12-01 18:53:05,213 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 184 transitions. [2018-12-01 18:53:05,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-01 18:53:05,214 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:05,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-01 18:53:05,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:05,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 144 states and 186 transitions. [2018-12-01 18:53:05,379 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 186 transitions. [2018-12-01 18:53:05,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-01 18:53:05,379 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:05,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:05,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:05,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 145 states and 187 transitions. [2018-12-01 18:53:05,677 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 187 transitions. [2018-12-01 18:53:05,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-01 18:53:05,677 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:05,690 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-01 18:53:06,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:06,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 145 states and 186 transitions. [2018-12-01 18:53:06,144 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 186 transitions. [2018-12-01 18:53:06,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-01 18:53:06,144 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:06,166 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-01 18:53:06,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:06,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 145 states and 185 transitions. [2018-12-01 18:53:06,406 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 185 transitions. [2018-12-01 18:53:06,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-01 18:53:06,406 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:08,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:08,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 150 states and 193 transitions. [2018-12-01 18:53:08,571 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 193 transitions. [2018-12-01 18:53:08,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-01 18:53:08,571 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:08,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:09,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:09,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 152 states and 197 transitions. [2018-12-01 18:53:09,968 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 197 transitions. [2018-12-01 18:53:09,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-01 18:53:09,968 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:09,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-01 18:53:10,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:10,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 153 states and 199 transitions. [2018-12-01 18:53:10,208 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 199 transitions. [2018-12-01 18:53:10,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-01 18:53:10,209 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:10,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:10,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:10,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 154 states and 200 transitions. [2018-12-01 18:53:10,484 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 200 transitions. [2018-12-01 18:53:10,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-01 18:53:10,484 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:11,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:13,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:13,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 160 states and 212 transitions. [2018-12-01 18:53:13,270 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 212 transitions. [2018-12-01 18:53:13,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-01 18:53:13,271 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:14,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:17,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:17,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 167 states and 223 transitions. [2018-12-01 18:53:17,051 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 223 transitions. [2018-12-01 18:53:17,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-01 18:53:17,051 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:17,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-01 18:53:17,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:17,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 168 states and 225 transitions. [2018-12-01 18:53:17,347 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 225 transitions. [2018-12-01 18:53:17,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-01 18:53:17,347 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:17,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:17,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:17,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 169 states and 226 transitions. [2018-12-01 18:53:17,698 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 226 transitions. [2018-12-01 18:53:17,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-01 18:53:17,699 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:18,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:21,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:21,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 173 states and 234 transitions. [2018-12-01 18:53:21,275 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 234 transitions. [2018-12-01 18:53:21,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-01 18:53:21,275 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:22,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:26,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:26,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 179 states and 247 transitions. [2018-12-01 18:53:26,468 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 247 transitions. [2018-12-01 18:53:26,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-01 18:53:26,468 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:26,475 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-01 18:53:27,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:27,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 157 states and 210 transitions. [2018-12-01 18:53:27,210 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 210 transitions. [2018-12-01 18:53:27,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-01 18:53:27,210 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:27,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-01 18:53:27,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:27,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 158 states and 212 transitions. [2018-12-01 18:53:27,585 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 212 transitions. [2018-12-01 18:53:27,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-01 18:53:27,585 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:27,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:30,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:30,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 164 states and 230 transitions. [2018-12-01 18:53:30,372 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 230 transitions. [2018-12-01 18:53:30,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-01 18:53:30,372 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:33,247 WARN L180 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 27 [2018-12-01 18:53:34,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:53:47,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:47,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 179 states and 258 transitions. [2018-12-01 18:53:47,079 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 258 transitions. [2018-12-01 18:53:47,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-01 18:53:47,079 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:47,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-01 18:53:58,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:53:58,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 192 states and 283 transitions. [2018-12-01 18:53:58,064 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 283 transitions. [2018-12-01 18:53:58,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-01 18:53:58,065 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:53:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:53:58,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:54:03,471 WARN L180 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2018-12-01 18:54:12,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:54:12,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 209 states and 319 transitions. [2018-12-01 18:54:12,337 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 319 transitions. [2018-12-01 18:54:12,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-01 18:54:12,337 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:54:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:54:13,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:54:25,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:54:25,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 226 states and 354 transitions. [2018-12-01 18:54:25,983 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 354 transitions. [2018-12-01 18:54:25,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-01 18:54:25,983 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:54:25,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:54:26,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:54:27,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:54:27,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 228 states and 357 transitions. [2018-12-01 18:54:27,717 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 357 transitions. [2018-12-01 18:54:27,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-01 18:54:27,717 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:54:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:54:27,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:54:29,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:54:29,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 230 states and 360 transitions. [2018-12-01 18:54:29,223 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 360 transitions. [2018-12-01 18:54:29,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-01 18:54:29,223 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:54:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:54:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-01 18:54:30,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:54:30,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 231 states and 360 transitions. [2018-12-01 18:54:30,876 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 360 transitions. [2018-12-01 18:54:30,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-01 18:54:30,876 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:54:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:54:30,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-01 18:54:30,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:54:30,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 232 states and 359 transitions. [2018-12-01 18:54:30,895 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 359 transitions. [2018-12-01 18:54:30,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-01 18:54:30,895 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:54:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:54:32,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:54:37,993 WARN L180 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2018-12-01 18:54:46,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:54:46,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 246 states and 385 transitions. [2018-12-01 18:54:46,471 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 385 transitions. [2018-12-01 18:54:46,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-01 18:54:46,472 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:54:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:54:46,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-01 18:54:46,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:54:46,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 245 states and 383 transitions. [2018-12-01 18:54:46,493 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 383 transitions. [2018-12-01 18:54:46,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-01 18:54:46,494 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:54:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:54:49,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-01 18:54:52,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:54:52,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 246 states and 384 transitions. [2018-12-01 18:54:52,976 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 384 transitions. [2018-12-01 18:54:52,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-01 18:54:52,977 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:54:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:54:55,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:54:57,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:54:57,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 248 states and 387 transitions. [2018-12-01 18:54:57,849 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 387 transitions. [2018-12-01 18:54:57,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-01 18:54:57,849 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:54:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:55:03,952 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2018-12-01 18:55:06,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:55:26,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:55:26,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 259 states and 409 transitions. [2018-12-01 18:55:26,420 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 409 transitions. [2018-12-01 18:55:26,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-01 18:55:26,420 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:55:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:55:30,791 WARN L180 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2018-12-01 18:55:35,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:55:57,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:55:57,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 269 states and 429 transitions. [2018-12-01 18:55:57,686 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 429 transitions. [2018-12-01 18:55:57,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-01 18:55:57,686 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:55:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:55:57,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:56:02,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:56:02,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 271 states and 432 transitions. [2018-12-01 18:56:02,376 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 432 transitions. [2018-12-01 18:56:02,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-01 18:56:02,376 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:56:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:56:03,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:56:05,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:56:05,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 273 states and 435 transitions. [2018-12-01 18:56:05,663 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 435 transitions. [2018-12-01 18:56:05,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-01 18:56:05,663 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:56:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:56:10,134 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:56:25,638 WARN L180 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2018-12-01 18:56:48,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:56:48,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 285 states and 464 transitions. [2018-12-01 18:56:48,848 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 464 transitions. [2018-12-01 18:56:48,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-01 18:56:48,849 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:56:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:56:49,316 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:56:50,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:56:50,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 286 states and 465 transitions. [2018-12-01 18:56:50,294 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 465 transitions. [2018-12-01 18:56:50,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-01 18:56:50,294 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:56:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:56:56,314 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:57:20,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:57:20,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 296 states and 486 transitions. [2018-12-01 18:57:20,683 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 486 transitions. [2018-12-01 18:57:20,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-01 18:57:20,683 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:57:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:57:20,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-01 18:57:20,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:57:20,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 295 states and 485 transitions. [2018-12-01 18:57:20,712 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 485 transitions. [2018-12-01 18:57:20,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-01 18:57:20,713 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:57:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:57:21,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-01 18:57:22,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:57:22,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 297 states and 494 transitions. [2018-12-01 18:57:22,868 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 494 transitions. [2018-12-01 18:57:22,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-01 18:57:22,868 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:57:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:57:22,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-01 18:57:25,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:57:25,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 295 states and 491 transitions. [2018-12-01 18:57:25,564 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 491 transitions. [2018-12-01 18:57:25,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-01 18:57:25,565 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:57:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:57:26,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:57:30,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:57:30,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 298 states and 494 transitions. [2018-12-01 18:57:30,307 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 494 transitions. [2018-12-01 18:57:30,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-01 18:57:30,307 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:57:30,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:57:34,267 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:57:56,720 WARN L180 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2018-12-01 18:58:24,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:58:24,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 323 states and 537 transitions. [2018-12-01 18:58:24,282 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 537 transitions. [2018-12-01 18:58:24,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-01 18:58:24,283 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:58:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:58:24,314 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:58:27,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:58:27,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 325 states and 540 transitions. [2018-12-01 18:58:27,543 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 540 transitions. [2018-12-01 18:58:27,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-01 18:58:27,543 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:58:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 18:58:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 18:58:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 18:58:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 18:58:27,760 WARN L497 CodeCheckObserver]: This program is UNSAFE, Check terminated with 63 iterations. [2018-12-01 18:58:27,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 06:58:27 ImpRootNode [2018-12-01 18:58:27,793 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-12-01 18:58:27,793 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 18:58:27,793 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 18:58:27,793 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 18:58:27,794 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:53:00" (3/4) ... [2018-12-01 18:58:27,795 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-01 18:58:27,835 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_221c632b-9a56-46df-a0f7-30dfb21fb206/bin-2019/ukojak/witness.graphml [2018-12-01 18:58:27,835 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 18:58:27,836 INFO L168 Benchmark]: Toolchain (without parser) took 327774.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 75.0 MB). Free memory was 957.1 MB in the beginning and 834.0 MB in the end (delta: 123.1 MB). Peak memory consumption was 198.0 MB. Max. memory is 11.5 GB. [2018-12-01 18:58:27,837 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 18:58:27,837 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.75 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.0 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -123.5 MB). Peak memory consumption was 30.2 MB. Max. memory is 11.5 GB. [2018-12-01 18:58:27,837 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.87 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 18:58:27,838 INFO L168 Benchmark]: Boogie Preprocessor took 19.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2018-12-01 18:58:27,838 INFO L168 Benchmark]: RCFGBuilder took 404.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 55.3 MB). Peak memory consumption was 55.3 MB. Max. memory is 11.5 GB. [2018-12-01 18:58:27,838 INFO L168 Benchmark]: CodeCheck took 326970.32 ms. Allocated memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -22.0 MB). Free memory was 1.0 GB in the beginning and 840.5 MB in the end (delta: 177.8 MB). Peak memory consumption was 155.8 MB. Max. memory is 11.5 GB. [2018-12-01 18:58:27,839 INFO L168 Benchmark]: Witness Printer took 42.46 ms. Allocated memory is still 1.1 GB. Free memory was 840.5 MB in the beginning and 834.0 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2018-12-01 18:58:27,840 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, 134 locations, 59 error locations. UNSAFE Result, 326.9s OverallTime, 63 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 20709504 SDtfs, -170949036 SDslu, 942661556 SDs, 0 SdLazy, -246759724 SolverSat, -1719430564 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 41.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11136 GetRequests, 9619 SyntacticMatches, 427 SemanticMatches, 1090 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617582 ImplicationChecksByTransitivity, 322.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 54.1s InterpolantComputationTime, 1262 NumberOfCodeBlocks, 1262 NumberOfCodeBlocksAsserted, 63 NumberOfCheckSat, 1164 ConstructedInterpolants, 0 QuantifiedInterpolants, 263066 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 62 InterpolantComputations, 43 PerfectInterpolantSequences, 143/187 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: 566]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L574] struct node *nodelast = ((void *)0); [L575] struct node *node = ((void *)0); [L576] COND TRUE __VERIFIER_nondet_int() [L577] node = malloc(sizeof *node) [L578] COND FALSE !(!node) [L580] node->left = ((void *)0) [L581] node->right = nodelast [L582] COND FALSE !(\read(*nodelast)) [L584] int value = __VERIFIER_nondet_int(); [L585] node->value = value [L586] nodelast = node [L576] COND FALSE !(__VERIFIER_nondet_int()) [L588] COND TRUE node != ((void *)0) [L589] node->left = malloc(sizeof *node) [L590] COND FALSE !(!node) [L592] EXPR node->left [L592] node->left->left = ((void *)0) [L593] EXPR node->left [L593] node->left->right = ((void *)0) [L594] EXPR node->left [L594] node->left->value = 42 [L595] EXPR node->left [L595] node->left->parent = node [L596] EXPR node->right [L596] node = node->right [L588] COND FALSE !(node != ((void *)0)) [L598] return nodelast; [L619] struct node *data = create_tree(); [L620] COND FALSE !(!data) [L564] COND FALSE !(!(node)) [L565] COND TRUE node != ((void *)0) [L566] node->left [L566] COND TRUE node->left [L567] EXPR node->left [L567] EXPR node->left->value [L567] COND FALSE !(!(node->left->value == 42)) [L568] EXPR node->value [L568] COND FALSE !(!(node->value)) [L569] EXPR node->parent [L569] node = node->parent [L565] COND TRUE node != ((void *)0) [L566] node->left * 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 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 298.75 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.0 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -123.5 MB). Peak memory consumption was 30.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.87 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 404.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 55.3 MB). Peak memory consumption was 55.3 MB. Max. memory is 11.5 GB. * CodeCheck took 326970.32 ms. Allocated memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -22.0 MB). Free memory was 1.0 GB in the beginning and 840.5 MB in the end (delta: 177.8 MB). Peak memory consumption was 155.8 MB. Max. memory is 11.5 GB. * Witness Printer took 42.46 ms. Allocated memory is still 1.1 GB. Free memory was 840.5 MB in the beginning and 834.0 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...