./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-queue-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a93e6c1c-9d06-46e7-be10-1a120c948d92/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a93e6c1c-9d06-46e7-be10-1a120c948d92/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a93e6c1c-9d06-46e7-be10-1a120c948d92/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a93e6c1c-9d06-46e7-be10-1a120c948d92/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-queue-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_a93e6c1c-9d06-46e7-be10-1a120c948d92/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a93e6c1c-9d06-46e7-be10-1a120c948d92/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 211ff4d6a654e925d7b0753c61a65231458a0bc5 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-29 22:34:53,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:34:53,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:34:53,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:34:53,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:34:53,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:34:53,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:34:53,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:34:53,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:34:53,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:34:53,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:34:53,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:34:53,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:34:53,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:34:53,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:34:53,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:34:53,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:34:53,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:34:53,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:34:53,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:34:53,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:34:53,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:34:53,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:34:53,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:34:53,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:34:53,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:34:53,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:34:53,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:34:53,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:34:53,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:34:53,425 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:34:53,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:34:53,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:34:53,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:34:53,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:34:53,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:34:53,432 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:34:53,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:34:53,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:34:53,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:34:53,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:34:53,437 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a93e6c1c-9d06-46e7-be10-1a120c948d92/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-29 22:34:53,463 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:34:53,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:34:53,464 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-29 22:34:53,465 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-29 22:34:53,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:34:53,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:34:53,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:34:53,466 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:34:53,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:34:53,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:34:53,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:34:53,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:34:53,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:34:53,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:34:53,468 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:34:53,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:34:53,468 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:34:53,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:34:53,469 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-29 22:34:53,469 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-29 22:34:53,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:34:53,470 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:34:53,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-29 22:34:53,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:34:53,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:34:53,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:34:53,471 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-29 22:34:53,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:34:53,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:34:53,471 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_a93e6c1c-9d06-46e7-be10-1a120c948d92/bin/ukojak/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a93e6c1c-9d06-46e7-be10-1a120c948d92/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 211ff4d6a654e925d7b0753c61a65231458a0bc5 [2020-11-29 22:34:53,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:34:53,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:34:53,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:34:53,789 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:34:53,791 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:34:53,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a93e6c1c-9d06-46e7-be10-1a120c948d92/bin/ukojak/../../sv-benchmarks/c/forester-heap/dll-queue-2.i [2020-11-29 22:34:53,889 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a93e6c1c-9d06-46e7-be10-1a120c948d92/bin/ukojak/data/ecadec09e/5e560072f005456a940f8edc64235582/FLAG019b0e34f [2020-11-29 22:34:54,610 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:34:54,611 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a93e6c1c-9d06-46e7-be10-1a120c948d92/sv-benchmarks/c/forester-heap/dll-queue-2.i [2020-11-29 22:34:54,628 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a93e6c1c-9d06-46e7-be10-1a120c948d92/bin/ukojak/data/ecadec09e/5e560072f005456a940f8edc64235582/FLAG019b0e34f [2020-11-29 22:34:54,833 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a93e6c1c-9d06-46e7-be10-1a120c948d92/bin/ukojak/data/ecadec09e/5e560072f005456a940f8edc64235582 [2020-11-29 22:34:54,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:34:54,840 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:34:54,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:34:54,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:34:54,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:34:54,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:34:54" (1/1) ... [2020-11-29 22:34:54,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@498987f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:34:54, skipping insertion in model container [2020-11-29 22:34:54,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:34:54" (1/1) ... [2020-11-29 22:34:54,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:34:54,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:34:55,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:34:55,496 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:34:55,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:34:55,650 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:34:55,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:34:55 WrapperNode [2020-11-29 22:34:55,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:34:55,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:34:55,655 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:34:55,655 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:34:55,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:34:55" (1/1) ... [2020-11-29 22:34:55,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:34:55" (1/1) ... [2020-11-29 22:34:55,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:34:55,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:34:55,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:34:55,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:34:55,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:34:55" (1/1) ... [2020-11-29 22:34:55,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:34:55" (1/1) ... [2020-11-29 22:34:55,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:34:55" (1/1) ... [2020-11-29 22:34:55,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:34:55" (1/1) ... [2020-11-29 22:34:55,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:34:55" (1/1) ... [2020-11-29 22:34:55,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:34:55" (1/1) ... [2020-11-29 22:34:55,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:34:55" (1/1) ... [2020-11-29 22:34:55,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:34:55,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:34:55,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:34:55,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:34:55,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:34:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a93e6c1c-9d06-46e7-be10-1a120c948d92/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-29 22:34:55,918 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-29 22:34:55,918 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-29 22:34:55,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 22:34:55,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 22:34:55,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 22:34:55,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 22:34:55,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:34:55,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 22:34:55,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 22:34:55,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:34:55,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:34:55,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:34:57,161 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:34:57,162 INFO L298 CfgBuilder]: Removed 35 assume(true) statements. [2020-11-29 22:34:57,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:34:57 BoogieIcfgContainer [2020-11-29 22:34:57,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:34:57,166 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-29 22:34:57,166 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-29 22:34:57,182 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-29 22:34:57,182 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:34:57" (1/1) ... [2020-11-29 22:34:57,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:34:57,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:34:57,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 81 states and 144 transitions. [2020-11-29 22:34:57,253 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 144 transitions. [2020-11-29 22:34:57,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 22:34:57,263 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:34:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:34:57,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:34:57,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:34:57,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 65 states and 109 transitions. [2020-11-29 22:34:57,445 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 109 transitions. [2020-11-29 22:34:57,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 22:34:57,446 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:34:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:34:57,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:34:57,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:34:57,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 68 states and 114 transitions. [2020-11-29 22:34:57,681 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 114 transitions. [2020-11-29 22:34:57,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 22:34:57,682 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:34:57,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:34:57,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:34:57,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:34:57,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 69 states and 113 transitions. [2020-11-29 22:34:57,792 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 113 transitions. [2020-11-29 22:34:57,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 22:34:57,793 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:34:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:34:57,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:34:58,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:34:58,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 73 states and 119 transitions. [2020-11-29 22:34:58,235 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 119 transitions. [2020-11-29 22:34:58,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 22:34:58,236 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:34:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:34:58,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:34:58,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:34:58,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 78 states and 125 transitions. [2020-11-29 22:34:58,647 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 125 transitions. [2020-11-29 22:34:58,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 22:34:58,649 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:34:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:34:58,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:34:59,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:34:59,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 84 states and 132 transitions. [2020-11-29 22:34:59,221 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 132 transitions. [2020-11-29 22:34:59,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 22:34:59,223 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:34:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:34:59,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:34:59,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:34:59,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 91 states and 141 transitions. [2020-11-29 22:34:59,830 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 141 transitions. [2020-11-29 22:34:59,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 22:34:59,832 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:34:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:34:59,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:00,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:00,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 85 states and 132 transitions. [2020-11-29 22:35:00,742 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 132 transitions. [2020-11-29 22:35:00,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 22:35:00,744 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:00,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:01,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:01,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 97 states and 149 transitions. [2020-11-29 22:35:01,852 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 149 transitions. [2020-11-29 22:35:01,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 22:35:01,853 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:01,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:02,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:02,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 96 states and 147 transitions. [2020-11-29 22:35:02,031 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 147 transitions. [2020-11-29 22:35:02,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 22:35:02,032 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:02,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:02,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:02,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:02,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 100 states and 153 transitions. [2020-11-29 22:35:02,559 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 153 transitions. [2020-11-29 22:35:02,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 22:35:02,561 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:02,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:02,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:02,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 102 states and 156 transitions. [2020-11-29 22:35:02,953 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 156 transitions. [2020-11-29 22:35:02,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 22:35:02,954 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:03,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:04,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:04,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 117 states and 179 transitions. [2020-11-29 22:35:04,991 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 179 transitions. [2020-11-29 22:35:04,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 22:35:04,993 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:05,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:05,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:05,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 119 states and 182 transitions. [2020-11-29 22:35:05,309 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 182 transitions. [2020-11-29 22:35:05,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 22:35:05,310 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:05,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 22:35:07,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:07,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 129 states and 201 transitions. [2020-11-29 22:35:07,175 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 201 transitions. [2020-11-29 22:35:07,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 22:35:07,176 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:07,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:07,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:07,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 130 states and 203 transitions. [2020-11-29 22:35:07,747 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 203 transitions. [2020-11-29 22:35:07,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 22:35:07,748 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:07,784 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-29 22:35:07,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:07,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 132 states and 206 transitions. [2020-11-29 22:35:07,917 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 206 transitions. [2020-11-29 22:35:07,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 22:35:07,918 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-29 22:35:08,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:08,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 135 states and 211 transitions. [2020-11-29 22:35:08,113 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 211 transitions. [2020-11-29 22:35:08,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 22:35:08,113 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:08,179 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:08,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:08,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 136 states and 212 transitions. [2020-11-29 22:35:08,644 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 212 transitions. [2020-11-29 22:35:08,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 22:35:08,645 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:09,142 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:12,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:12,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 158 states and 267 transitions. [2020-11-29 22:35:12,969 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 267 transitions. [2020-11-29 22:35:12,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 22:35:12,970 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:13,064 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:13,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:13,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 161 states and 275 transitions. [2020-11-29 22:35:13,817 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 275 transitions. [2020-11-29 22:35:13,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 22:35:13,818 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:14,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:19,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:19,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 181 states and 308 transitions. [2020-11-29 22:35:19,482 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 308 transitions. [2020-11-29 22:35:19,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 22:35:19,483 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:19,545 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:21,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:21,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 187 states and 314 transitions. [2020-11-29 22:35:21,372 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 314 transitions. [2020-11-29 22:35:21,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-29 22:35:21,373 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:26,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:26,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 210 states and 352 transitions. [2020-11-29 22:35:26,451 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 352 transitions. [2020-11-29 22:35:26,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-29 22:35:26,453 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:26,539 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:27,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:27,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 212 states and 356 transitions. [2020-11-29 22:35:27,086 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 356 transitions. [2020-11-29 22:35:27,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 22:35:27,087 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:27,205 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:27,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:27,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 213 states and 361 transitions. [2020-11-29 22:35:27,974 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 361 transitions. [2020-11-29 22:35:27,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 22:35:27,975 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:28,001 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-29 22:35:29,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:29,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 220 states and 372 transitions. [2020-11-29 22:35:29,868 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 372 transitions. [2020-11-29 22:35:29,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 22:35:29,869 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:30,127 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:31,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:31,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 224 states and 379 transitions. [2020-11-29 22:35:31,769 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 379 transitions. [2020-11-29 22:35:31,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 22:35:31,770 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:31,880 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:32,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:32,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 226 states and 383 transitions. [2020-11-29 22:35:32,461 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 383 transitions. [2020-11-29 22:35:32,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-29 22:35:32,462 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:32,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:40,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:40,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 245 states and 419 transitions. [2020-11-29 22:35:40,396 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 419 transitions. [2020-11-29 22:35:40,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-29 22:35:40,397 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:41,088 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:44,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:44,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 260 states and 443 transitions. [2020-11-29 22:35:44,551 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 443 transitions. [2020-11-29 22:35:44,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-29 22:35:44,552 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:44,666 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:45,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:45,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 263 states and 458 transitions. [2020-11-29 22:35:45,985 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 458 transitions. [2020-11-29 22:35:45,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 22:35:45,986 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:46,133 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:48,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:48,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 128 states and 180 transitions. [2020-11-29 22:35:48,695 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 180 transitions. [2020-11-29 22:35:48,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-29 22:35:48,695 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:49,858 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:35:56,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:35:56,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 127 states and 177 transitions. [2020-11-29 22:35:56,735 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 177 transitions. [2020-11-29 22:35:56,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-29 22:35:56,736 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:35:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:35:57,645 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:36:04,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:36:04,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 145 states and 204 transitions. [2020-11-29 22:36:04,369 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 204 transitions. [2020-11-29 22:36:04,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-29 22:36:04,370 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:36:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:36:05,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:36:05,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 147 states and 210 transitions. [2020-11-29 22:36:05,327 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 210 transitions. [2020-11-29 22:36:05,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-29 22:36:05,328 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:36:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:06,410 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 22:36:10,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:36:10,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 152 states and 216 transitions. [2020-11-29 22:36:10,446 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 216 transitions. [2020-11-29 22:36:10,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-29 22:36:10,446 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:36:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:12,017 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:36:22,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:36:22,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 173 states and 250 transitions. [2020-11-29 22:36:22,404 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 250 transitions. [2020-11-29 22:36:22,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-29 22:36:22,404 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:36:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:36:23,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:36:23,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 175 states and 257 transitions. [2020-11-29 22:36:23,305 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 257 transitions. [2020-11-29 22:36:23,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-29 22:36:23,305 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:36:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:25,687 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:36:30,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:36:30,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 181 states and 274 transitions. [2020-11-29 22:36:30,696 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 274 transitions. [2020-11-29 22:36:30,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-29 22:36:30,697 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:36:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:36:32,426 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:36:50,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 22:36:50,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 191 states and 295 transitions. [2020-11-29 22:36:50,268 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 295 transitions. [2020-11-29 22:36:50,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-29 22:36:50,269 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 22:36:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:36:50,305 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:36:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:36:50,355 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:36:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:36:52,214 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:36:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:36:53,394 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:36:53,450 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 42 iterations. [2020-11-29 22:36:53,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 29.11 10:36:53 ImpRootNode [2020-11-29 22:36:53,495 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-29 22:36:53,496 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:36:53,496 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:36:53,496 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:36:53,497 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:34:57" (3/4) ... [2020-11-29 22:36:53,498 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 22:36:53,577 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a93e6c1c-9d06-46e7-be10-1a120c948d92/bin/ukojak/witness.graphml [2020-11-29 22:36:53,578 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:36:53,580 INFO L168 Benchmark]: Toolchain (without parser) took 118738.83 ms. Allocated memory was 94.4 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 60.0 MB in the beginning and 689.5 MB in the end (delta: -629.5 MB). Peak memory consumption was 705.0 MB. Max. memory is 16.1 GB. [2020-11-29 22:36:53,581 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 94.4 MB. Free memory was 65.2 MB in the beginning and 65.2 MB in the end (delta: 26.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:36:53,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 808.41 ms. Allocated memory is still 94.4 MB. Free memory was 59.8 MB in the beginning and 59.3 MB in the end (delta: 516.5 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 22:36:53,582 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.10 ms. Allocated memory is still 94.4 MB. Free memory was 59.3 MB in the beginning and 57.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:36:53,583 INFO L168 Benchmark]: Boogie Preprocessor took 104.69 ms. Allocated memory is still 94.4 MB. Free memory was 57.2 MB in the beginning and 55.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:36:53,583 INFO L168 Benchmark]: RCFGBuilder took 1339.53 ms. Allocated memory was 94.4 MB in the beginning and 125.8 MB in the end (delta: 31.5 MB). Free memory was 55.1 MB in the beginning and 81.4 MB in the end (delta: -26.2 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. [2020-11-29 22:36:53,584 INFO L168 Benchmark]: CodeCheck took 116329.81 ms. Allocated memory was 125.8 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 81.4 MB in the beginning and 693.7 MB in the end (delta: -612.3 MB). Peak memory consumption was 690.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:36:53,585 INFO L168 Benchmark]: Witness Printer took 82.08 ms. Allocated memory is still 1.4 GB. Free memory was 693.7 MB in the beginning and 689.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 22:36:53,589 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 116.2s, OverallIterations: 42, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1762939312 SDtfs, 1704696736 SDslu, -1565961308 SDs, 0 SdLazy, 1164022692 SolverSat, -1571518776 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 120.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10335 GetRequests, 9309 SyntacticMatches, 290 SemanticMatches, 736 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307442 ImplicationChecksByTransitivity, 100.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.1s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 13.6s InterpolantComputationTime, 1067 NumberOfCodeBlocks, 1067 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 984 ConstructedInterpolants, 0 QuantifiedInterpolants, 492201 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 41 InterpolantComputations, 10 PerfectInterpolantSequences, 36/440 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 985]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = ((void*)0) [L999] head->prev = ((void*)0) [L1000] head->data = 0 [L1001] SLL* item = head; [L1002] int status = 0; [L1004] COND TRUE __VERIFIER_nondet_int() [L1006] item->next = malloc(sizeof(SLL)) [L1007] EXPR item->next [L1007] item->next->prev = item [L1008] EXPR item->next [L1008] item = item->next [L1009] item->next = ((void*)0) [L1011] COND TRUE !status [L1013] item->data = 1 [L1014] status = 1 [L1027] COND FALSE !(!(head != ((void*)0))) [L1028] COND FALSE !(!(item != ((void*)0))) [L1004] COND TRUE __VERIFIER_nondet_int() [L1006] item->next = malloc(sizeof(SLL)) [L1007] EXPR item->next [L1007] item->next->prev = item [L1008] EXPR item->next [L1008] item = item->next [L1009] item->next = ((void*)0) [L1011] COND FALSE !(!status) [L1016] COND TRUE status == 1 [L1018] item->data = 2 [L1019] status = 2 [L1027] COND FALSE !(!(head != ((void*)0))) [L1028] COND FALSE !(!(item != ((void*)0))) [L1004] COND TRUE __VERIFIER_nondet_int() [L1006] item->next = malloc(sizeof(SLL)) [L1007] EXPR item->next [L1007] item->next->prev = item [L1008] EXPR item->next [L1008] item = item->next [L1009] item->next = ((void*)0) [L1011] COND FALSE !(!status) [L1016] COND FALSE !(status == 1) [L1021] COND TRUE status >= 2 [L1023] item->data = 3 [L1024] status = 3 [L1027] COND FALSE !(!(head != ((void*)0))) [L1028] COND FALSE !(!(item != ((void*)0))) [L1004] COND FALSE !(__VERIFIER_nondet_int()) [L1031] COND FALSE !(!(head != ((void*)0))) [L1032] COND FALSE !(status == 1) [L1037] COND FALSE !(status == 2) [L1043] COND TRUE status == 3 [L1045] COND FALSE !(!(head != ((void*)0))) [L1046] EXPR head->next [L1046] COND FALSE !(!(head->next != ((void*)0))) [L1047] EXPR head->next [L1047] EXPR head->next->next [L1047] COND FALSE !(!(head->next->next != ((void*)0))) [L1048] EXPR head->next [L1048] EXPR head->next->next [L1048] EXPR head->next->next->next [L1048] COND FALSE !(!(head->next->next->next != ((void*)0))) [L1049] EXPR head->next [L1049] EXPR head->next->next [L1049] EXPR head->next->next->next [L1049] EXPR head->next->next->next->data [L1049] COND TRUE !(head->next->next->next->data != 3) [L1049] CALL reach_error() [L985] COND FALSE !(0) [L985] __assert_fail ("0", "dll-queue-2.c", 16, __extension__ __PRETTY_FUNCTION__) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 94.4 MB. Free memory was 65.2 MB in the beginning and 65.2 MB in the end (delta: 26.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 808.41 ms. Allocated memory is still 94.4 MB. Free memory was 59.8 MB in the beginning and 59.3 MB in the end (delta: 516.5 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.10 ms. Allocated memory is still 94.4 MB. Free memory was 59.3 MB in the beginning and 57.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 104.69 ms. Allocated memory is still 94.4 MB. Free memory was 57.2 MB in the beginning and 55.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1339.53 ms. Allocated memory was 94.4 MB in the beginning and 125.8 MB in the end (delta: 31.5 MB). Free memory was 55.1 MB in the beginning and 81.4 MB in the end (delta: -26.2 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. * CodeCheck took 116329.81 ms. Allocated memory was 125.8 MB in the beginning and 1.4 GB in the end (delta: 1.3 GB). Free memory was 81.4 MB in the beginning and 693.7 MB in the end (delta: -612.3 MB). Peak memory consumption was 690.4 MB. Max. memory is 16.1 GB. * Witness Printer took 82.08 ms. Allocated memory is still 1.4 GB. Free memory was 693.7 MB in the beginning and 689.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...