./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 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ec3f724c-47be-46b9-8378-967309917b49/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ec3f724c-47be-46b9-8378-967309917b49/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ec3f724c-47be-46b9-8378-967309917b49/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ec3f724c-47be-46b9-8378-967309917b49/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_ec3f724c-47be-46b9-8378-967309917b49/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ec3f724c-47be-46b9-8378-967309917b49/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 0.1.23-5842f4b [2018-11-18 18:39:17,365 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 18:39:17,366 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 18:39:17,374 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 18:39:17,375 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 18:39:17,375 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 18:39:17,376 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 18:39:17,377 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 18:39:17,378 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 18:39:17,379 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 18:39:17,380 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 18:39:17,380 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 18:39:17,381 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 18:39:17,381 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 18:39:17,383 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 18:39:17,383 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 18:39:17,384 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 18:39:17,385 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 18:39:17,387 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 18:39:17,388 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 18:39:17,389 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 18:39:17,390 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 18:39:17,392 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 18:39:17,392 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 18:39:17,393 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 18:39:17,393 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 18:39:17,394 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 18:39:17,395 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 18:39:17,396 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 18:39:17,397 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 18:39:17,397 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 18:39:17,397 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 18:39:17,397 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 18:39:17,398 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 18:39:17,399 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 18:39:17,400 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 18:39:17,400 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ec3f724c-47be-46b9-8378-967309917b49/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-11-18 18:39:17,416 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 18:39:17,416 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 18:39:17,416 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 18:39:17,416 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 18:39:17,417 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 18:39:17,417 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 18:39:17,417 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 18:39:17,417 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 18:39:17,417 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 18:39:17,417 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 18:39:17,417 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 18:39:17,418 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 18:39:17,418 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 18:39:17,418 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 18:39:17,418 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 18:39:17,418 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 18:39:17,419 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 18:39:17,419 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 18:39:17,419 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-18 18:39:17,419 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-18 18:39:17,419 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 18:39:17,419 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 18:39:17,420 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-18 18:39:17,420 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 18:39:17,420 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 18:39:17,421 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 18:39:17,421 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-18 18:39:17,421 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 18:39:17,421 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 18:39:17,421 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_ec3f724c-47be-46b9-8378-967309917b49/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 [2018-11-18 18:39:17,448 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 18:39:17,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 18:39:17,459 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 18:39:17,460 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 18:39:17,460 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 18:39:17,462 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ec3f724c-47be-46b9-8378-967309917b49/bin-2019/ukojak/../../sv-benchmarks/c/forester-heap/sll-queue_false-unreach-call_false-valid-memcleanup.i [2018-11-18 18:39:17,509 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ec3f724c-47be-46b9-8378-967309917b49/bin-2019/ukojak/data/75279d2a3/7cf0d3390147446e8d66f6b7a10c1b8d/FLAGea0527351 [2018-11-18 18:39:17,888 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 18:39:17,889 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ec3f724c-47be-46b9-8378-967309917b49/sv-benchmarks/c/forester-heap/sll-queue_false-unreach-call_false-valid-memcleanup.i [2018-11-18 18:39:17,899 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ec3f724c-47be-46b9-8378-967309917b49/bin-2019/ukojak/data/75279d2a3/7cf0d3390147446e8d66f6b7a10c1b8d/FLAGea0527351 [2018-11-18 18:39:17,908 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ec3f724c-47be-46b9-8378-967309917b49/bin-2019/ukojak/data/75279d2a3/7cf0d3390147446e8d66f6b7a10c1b8d [2018-11-18 18:39:17,911 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 18:39:17,912 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 18:39:17,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 18:39:17,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 18:39:17,916 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 18:39:17,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:39:17" (1/1) ... [2018-11-18 18:39:17,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eec0c3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:17, skipping insertion in model container [2018-11-18 18:39:17,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:39:17" (1/1) ... [2018-11-18 18:39:17,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 18:39:17,966 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 18:39:18,217 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 18:39:18,225 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 18:39:18,261 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 18:39:18,363 INFO L195 MainTranslator]: Completed translation [2018-11-18 18:39:18,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:18 WrapperNode [2018-11-18 18:39:18,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 18:39:18,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 18:39:18,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 18:39:18,364 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 18:39:18,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:18" (1/1) ... [2018-11-18 18:39:18,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:18" (1/1) ... [2018-11-18 18:39:18,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 18:39:18,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 18:39:18,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 18:39:18,396 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 18:39:18,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:18" (1/1) ... [2018-11-18 18:39:18,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:18" (1/1) ... [2018-11-18 18:39:18,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:18" (1/1) ... [2018-11-18 18:39:18,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:18" (1/1) ... [2018-11-18 18:39:18,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:18" (1/1) ... [2018-11-18 18:39:18,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:18" (1/1) ... [2018-11-18 18:39:18,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:18" (1/1) ... [2018-11-18 18:39:18,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 18:39:18,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 18:39:18,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 18:39:18,423 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 18:39:18,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ec3f724c-47be-46b9-8378-967309917b49/bin-2019/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-18 18:39:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 18:39:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 18:39:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 18:39:18,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 18:39:18,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 18:39:18,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 18:39:18,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 18:39:18,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 18:39:19,830 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 18:39:19,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:39:19 BoogieIcfgContainer [2018-11-18 18:39:19,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 18:39:19,831 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-18 18:39:19,831 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-18 18:39:19,841 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-18 18:39:19,841 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:39:19" (1/1) ... [2018-11-18 18:39:19,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 18:39:19,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:19,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 84 states and 134 transitions. [2018-11-18 18:39:19,888 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 134 transitions. [2018-11-18 18:39:19,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-11-18 18:39:19,891 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:20,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:39:20,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:20,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 84 states and 129 transitions. [2018-11-18 18:39:20,038 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 129 transitions. [2018-11-18 18:39:20,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-11-18 18:39:20,038 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:20,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:39:20,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:20,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 88 states and 132 transitions. [2018-11-18 18:39:20,280 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 132 transitions. [2018-11-18 18:39:20,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-11-18 18:39:20,281 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:20,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:39:20,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:20,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 90 states and 134 transitions. [2018-11-18 18:39:20,355 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 134 transitions. [2018-11-18 18:39:20,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 18:39:20,356 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:20,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:39:20,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:20,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 93 states and 136 transitions. [2018-11-18 18:39:20,591 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 136 transitions. [2018-11-18 18:39:20,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 18:39:20,592 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:20,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:39:20,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:20,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 99 states and 142 transitions. [2018-11-18 18:39:20,830 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 142 transitions. [2018-11-18 18:39:20,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 18:39:20,831 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:20,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:39:20,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:20,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 100 states and 140 transitions. [2018-11-18 18:39:20,875 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 140 transitions. [2018-11-18 18:39:20,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 18:39:20,876 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:20,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:39:20,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:20,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 101 states and 138 transitions. [2018-11-18 18:39:20,918 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 138 transitions. [2018-11-18 18:39:20,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 18:39:20,919 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:20,956 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-18 18:39:21,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:21,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 86 states and 119 transitions. [2018-11-18 18:39:21,232 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 119 transitions. [2018-11-18 18:39:21,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 18:39:21,232 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:21,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:39:21,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:21,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 91 states and 122 transitions. [2018-11-18 18:39:21,335 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 122 transitions. [2018-11-18 18:39:21,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 18:39:21,336 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:21,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 18:39:21,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:21,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 89 states and 120 transitions. [2018-11-18 18:39:21,453 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2018-11-18 18:39:21,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 18:39:21,454 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:39:21,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:21,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 101 states and 132 transitions. [2018-11-18 18:39:21,952 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 132 transitions. [2018-11-18 18:39:21,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 18:39:21,952 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:22,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 18:39:22,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:22,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 112 states and 149 transitions. [2018-11-18 18:39:22,659 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 149 transitions. [2018-11-18 18:39:22,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 18:39:22,661 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:22,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:39:23,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:23,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 131 states and 171 transitions. [2018-11-18 18:39:23,576 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 171 transitions. [2018-11-18 18:39:23,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 18:39:23,576 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:23,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:39:24,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:24,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 133 states and 174 transitions. [2018-11-18 18:39:24,075 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 174 transitions. [2018-11-18 18:39:24,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 18:39:24,076 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:24,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:39:24,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:24,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 136 states and 179 transitions. [2018-11-18 18:39:24,997 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 179 transitions. [2018-11-18 18:39:24,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 18:39:24,997 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:25,017 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 18:39:25,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:25,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 139 states and 183 transitions. [2018-11-18 18:39:25,363 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 183 transitions. [2018-11-18 18:39:25,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 18:39:25,364 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:25,383 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 18:39:25,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:25,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 143 states and 189 transitions. [2018-11-18 18:39:25,750 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 189 transitions. [2018-11-18 18:39:25,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-18 18:39:25,750 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:26,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:39:29,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:29,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 169 states and 229 transitions. [2018-11-18 18:39:29,362 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 229 transitions. [2018-11-18 18:39:29,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 18:39:29,362 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:29,724 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:39:30,361 WARN L180 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-11-18 18:39:31,183 WARN L180 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-11-18 18:39:31,751 WARN L180 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-11-18 18:39:32,203 WARN L180 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2018-11-18 18:39:32,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:32,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 195 states and 267 transitions. [2018-11-18 18:39:32,997 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 267 transitions. [2018-11-18 18:39:32,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 18:39:32,998 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:33,112 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:39:33,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:33,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 207 states and 277 transitions. [2018-11-18 18:39:33,718 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 277 transitions. [2018-11-18 18:39:33,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-18 18:39:33,719 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:34,382 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:39:37,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:37,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 231 states and 308 transitions. [2018-11-18 18:39:37,085 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 308 transitions. [2018-11-18 18:39:37,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-18 18:39:37,085 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:37,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:39:43,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:43,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 252 states and 344 transitions. [2018-11-18 18:39:43,066 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 344 transitions. [2018-11-18 18:39:43,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-18 18:39:43,066 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:43,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:39:45,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:45,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 258 states and 357 transitions. [2018-11-18 18:39:45,185 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 357 transitions. [2018-11-18 18:39:45,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-18 18:39:45,186 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:45,200 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 18:39:46,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:46,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 265 states and 366 transitions. [2018-11-18 18:39:46,933 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 366 transitions. [2018-11-18 18:39:46,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-18 18:39:46,934 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:47,065 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:39:47,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:47,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 277 states and 379 transitions. [2018-11-18 18:39:47,947 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 379 transitions. [2018-11-18 18:39:47,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-18 18:39:47,948 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:48,627 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:39:50,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:50,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 292 states and 400 transitions. [2018-11-18 18:39:50,047 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 400 transitions. [2018-11-18 18:39:50,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-18 18:39:50,047 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:50,285 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:39:51,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:51,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 304 states and 415 transitions. [2018-11-18 18:39:51,364 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 415 transitions. [2018-11-18 18:39:51,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-18 18:39:51,365 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:53,100 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:39:58,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:58,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 326 states and 445 transitions. [2018-11-18 18:39:58,247 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 445 transitions. [2018-11-18 18:39:58,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-18 18:39:58,248 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:39:58,391 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 18:39:59,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:39:59,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 328 states and 449 transitions. [2018-11-18 18:39:59,209 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 449 transitions. [2018-11-18 18:39:59,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-18 18:39:59,210 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:39:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:00,246 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:40:03,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:03,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 358 states and 492 transitions. [2018-11-18 18:40:03,708 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 492 transitions. [2018-11-18 18:40:03,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-18 18:40:03,709 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:06,087 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:40:13,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:13,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 391 states and 541 transitions. [2018-11-18 18:40:13,453 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 541 transitions. [2018-11-18 18:40:13,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-18 18:40:13,454 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:40:26,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:26,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 411 states and 576 transitions. [2018-11-18 18:40:26,279 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 576 transitions. [2018-11-18 18:40:26,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-18 18:40:26,280 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:26,712 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:40:29,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:29,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 416 states and 586 transitions. [2018-11-18 18:40:29,569 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 586 transitions. [2018-11-18 18:40:29,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-18 18:40:29,570 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 18:40:30,434 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 18:40:31,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 18:40:31,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 424 states and 601 transitions. [2018-11-18 18:40:31,892 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 601 transitions. [2018-11-18 18:40:31,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-18 18:40:31,893 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 18:40:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 18:40:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 18:40:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 18:40:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 18:40:32,198 WARN L493 CodeCheckObserver]: This program is UNSAFE, Check terminated with 35 iterations. [2018-11-18 18:40:32,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 18.11 06:40:32 ImpRootNode [2018-11-18 18:40:32,273 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-18 18:40:32,273 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 18:40:32,273 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 18:40:32,274 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 18:40:32,274 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:39:19" (3/4) ... [2018-11-18 18:40:32,276 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 18:40:32,369 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ec3f724c-47be-46b9-8378-967309917b49/bin-2019/ukojak/witness.graphml [2018-11-18 18:40:32,369 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 18:40:32,369 INFO L168 Benchmark]: Toolchain (without parser) took 74457.87 ms. Allocated memory was 1.0 GB in the beginning and 1.7 GB in the end (delta: 701.0 MB). Free memory was 956.6 MB in the beginning and 1.3 GB in the end (delta: -379.8 MB). Peak memory consumption was 321.2 MB. Max. memory is 11.5 GB. [2018-11-18 18:40:32,370 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-11-18 18:40:32,378 INFO L168 Benchmark]: CACSL2BoogieTranslator took 451.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 956.6 MB in the beginning and 1.2 GB in the end (delta: -197.2 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2018-11-18 18:40:32,379 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 18:40:32,384 INFO L168 Benchmark]: Boogie Preprocessor took 27.14 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. [2018-11-18 18:40:32,385 INFO L168 Benchmark]: RCFGBuilder took 1407.16 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: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 11.5 GB. [2018-11-18 18:40:32,385 INFO L168 Benchmark]: CodeCheck took 72442.59 ms. Allocated memory was 1.2 GB in the beginning and 1.7 GB in the end (delta: 540.5 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -238.4 MB). Peak memory consumption was 302.1 MB. Max. memory is 11.5 GB. [2018-11-18 18:40:32,385 INFO L168 Benchmark]: Witness Printer took 95.47 ms. Allocated memory is still 1.7 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 18:40:32,388 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, 94 locations, 14 error locations. UNSAFE Result, 72.3s OverallTime, 35 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: -379411312 SDtfs, -1836363092 SDslu, 677485748 SDs, 0 SdLazy, -1621796746 SolverSat, -953681938 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 28.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7863 GetRequests, 6921 SyntacticMatches, 320 SemanticMatches, 622 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238060 ImplicationChecksByTransitivity, 68.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 14.0s InterpolantComputationTime, 974 NumberOfCodeBlocks, 974 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 892 ConstructedInterpolants, 0 QuantifiedInterpolants, 629884 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 34 InterpolantComputations, 14 PerfectInterpolantSequences, 62/370 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 0.20 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 451.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 956.6 MB in the beginning and 1.2 GB in the end (delta: -197.2 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.14 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 1407.16 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: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 11.5 GB. * CodeCheck took 72442.59 ms. Allocated memory was 1.2 GB in the beginning and 1.7 GB in the end (delta: 540.5 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -238.4 MB). Peak memory consumption was 302.1 MB. Max. memory is 11.5 GB. * Witness Printer took 95.47 ms. Allocated memory is still 1.7 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...