./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-properties/splice-1.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_3b75ef6c-a5f4-4bfc-9b24-018517047169/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3b75ef6c-a5f4-4bfc-9b24-018517047169/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3b75ef6c-a5f4-4bfc-9b24-018517047169/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3b75ef6c-a5f4-4bfc-9b24-018517047169/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/list-properties/splice-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3b75ef6c-a5f4-4bfc-9b24-018517047169/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3b75ef6c-a5f4-4bfc-9b24-018517047169/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 22d654ad48908d2db90206c3276d568dc9029be1 .................................................................................................................................................................................................................................................................................... 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 23:34:42,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:34:42,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:34:42,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:34:42,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:34:42,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:34:42,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:34:42,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:34:42,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:34:42,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:34:42,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:34:42,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:34:42,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:34:42,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:34:42,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:34:42,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:34:42,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:34:42,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:34:42,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:34:42,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:34:42,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:34:42,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:34:42,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:34:42,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:34:42,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:34:42,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:34:42,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:34:42,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:34:42,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:34:42,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:34:42,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:34:42,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:34:42,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:34:42,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:34:42,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:34:42,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:34:42,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:34:42,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:34:42,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:34:42,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:34:42,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:34:42,672 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3b75ef6c-a5f4-4bfc-9b24-018517047169/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-29 23:34:42,695 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:34:42,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:34:42,696 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-29 23:34:42,697 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-29 23:34:42,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:34:42,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:34:42,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:34:42,698 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:34:42,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:34:42,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:34:42,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:34:42,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:34:42,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:34:42,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:34:42,699 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:34:42,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:34:42,700 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:34:42,700 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:34:42,700 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-29 23:34:42,700 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-29 23:34:42,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:34:42,701 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:34:42,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-29 23:34:42,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:34:42,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:34:42,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:34:42,702 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-29 23:34:42,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:34:42,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:34:42,702 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_3b75ef6c-a5f4-4bfc-9b24-018517047169/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3b75ef6c-a5f4-4bfc-9b24-018517047169/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22d654ad48908d2db90206c3276d568dc9029be1 [2020-11-29 23:34:42,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:34:42,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:34:42,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:34:43,000 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:34:43,003 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:34:43,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3b75ef6c-a5f4-4bfc-9b24-018517047169/bin/ukojak/../../sv-benchmarks/c/list-properties/splice-1.i [2020-11-29 23:34:43,084 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3b75ef6c-a5f4-4bfc-9b24-018517047169/bin/ukojak/data/19834a566/b73e5479c3a742a3b07fb37abddc8b16/FLAG560cafdbf [2020-11-29 23:34:43,616 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:34:43,616 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3b75ef6c-a5f4-4bfc-9b24-018517047169/sv-benchmarks/c/list-properties/splice-1.i [2020-11-29 23:34:43,638 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3b75ef6c-a5f4-4bfc-9b24-018517047169/bin/ukojak/data/19834a566/b73e5479c3a742a3b07fb37abddc8b16/FLAG560cafdbf [2020-11-29 23:34:44,041 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3b75ef6c-a5f4-4bfc-9b24-018517047169/bin/ukojak/data/19834a566/b73e5479c3a742a3b07fb37abddc8b16 [2020-11-29 23:34:44,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:34:44,048 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:34:44,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:34:44,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:34:44,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:34:44,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:34:44" (1/1) ... [2020-11-29 23:34:44,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23ca80ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:44, skipping insertion in model container [2020-11-29 23:34:44,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:34:44" (1/1) ... [2020-11-29 23:34:44,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:34:44,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:34:44,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:34:44,438 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:34:44,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:34:44,547 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:34:44,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:44 WrapperNode [2020-11-29 23:34:44,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:34:44,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:34:44,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:34:44,550 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:34:44,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:44" (1/1) ... [2020-11-29 23:34:44,603 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:44" (1/1) ... [2020-11-29 23:34:44,626 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:34:44,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:34:44,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:34:44,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:34:44,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:44" (1/1) ... [2020-11-29 23:34:44,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:44" (1/1) ... [2020-11-29 23:34:44,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:44" (1/1) ... [2020-11-29 23:34:44,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:44" (1/1) ... [2020-11-29 23:34:44,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:44" (1/1) ... [2020-11-29 23:34:44,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:44" (1/1) ... [2020-11-29 23:34:44,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:44" (1/1) ... [2020-11-29 23:34:44,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:34:44,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:34:44,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:34:44,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:34:44,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:34:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b75ef6c-a5f4-4bfc-9b24-018517047169/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 23:34:44,778 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-11-29 23:34:44,778 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-11-29 23:34:44,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 23:34:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 23:34:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 23:34:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 23:34:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:34:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 23:34:44,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:34:44,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:34:44,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:34:45,026 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-11-29 23:34:45,420 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:34:45,420 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-29 23:34:45,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:34:45 BoogieIcfgContainer [2020-11-29 23:34:45,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:34:45,423 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-29 23:34:45,423 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-29 23:34:45,434 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-29 23:34:45,435 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:34:45" (1/1) ... [2020-11-29 23:34:45,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:34:45,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 23:34:45,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 27 states and 38 transitions. [2020-11-29 23:34:45,483 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 38 transitions. [2020-11-29 23:34:45,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 23:34:45,485 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 23:34:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:34:45,612 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 23:34:45,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 23:34:45,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 26 states and 33 transitions. [2020-11-29 23:34:45,623 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-11-29 23:34:45,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 23:34:45,624 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 23:34:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:34:45,748 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 23:34:45,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 23:34:45,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 30 states and 39 transitions. [2020-11-29 23:34:45,835 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2020-11-29 23:34:45,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 23:34:45,835 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 23:34:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:34:45,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 23:34:46,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 23:34:46,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 32 states and 41 transitions. [2020-11-29 23:34:46,284 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2020-11-29 23:34:46,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 23:34:46,285 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 23:34:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:34:46,390 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:34:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:34:46,447 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:34:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:34:46,592 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:34:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:34:46,640 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:34:46,671 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2020-11-29 23:34:46,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 29.11 11:34:46 ImpRootNode [2020-11-29 23:34:46,712 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-29 23:34:46,713 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:34:46,713 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:34:46,713 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:34:46,723 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:34:45" (3/4) ... [2020-11-29 23:34:46,725 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 23:34:46,810 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3b75ef6c-a5f4-4bfc-9b24-018517047169/bin/ukojak/witness.graphml [2020-11-29 23:34:46,810 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:34:46,812 INFO L168 Benchmark]: Toolchain (without parser) took 2763.86 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 63.7 MB in the beginning and 64.8 MB in the end (delta: -1.1 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:34:46,813 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 71.3 MB. Free memory was 33.6 MB in the beginning and 33.6 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:34:46,814 INFO L168 Benchmark]: CACSL2BoogieTranslator took 496.51 ms. Allocated memory is still 96.5 MB. Free memory was 63.7 MB in the beginning and 60.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:34:46,815 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.66 ms. Allocated memory is still 96.5 MB. Free memory was 60.6 MB in the beginning and 59.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:34:46,815 INFO L168 Benchmark]: Boogie Preprocessor took 53.01 ms. Allocated memory is still 96.5 MB. Free memory was 59.0 MB in the beginning and 57.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:34:46,816 INFO L168 Benchmark]: RCFGBuilder took 741.54 ms. Allocated memory is still 96.5 MB. Free memory was 57.3 MB in the beginning and 73.0 MB in the end (delta: -15.7 MB). Peak memory consumption was 33.9 MB. Max. memory is 16.1 GB. [2020-11-29 23:34:46,817 INFO L168 Benchmark]: CodeCheck took 1289.10 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 73.0 MB in the beginning and 67.7 MB in the end (delta: 5.3 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. [2020-11-29 23:34:46,818 INFO L168 Benchmark]: Witness Printer took 97.66 ms. Allocated memory is still 117.4 MB. Free memory was 67.7 MB in the beginning and 64.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:34:46,833 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, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 108 SDtfs, 16 SDslu, 16 SDs, 0 SdLazy, 78 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 317 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1232 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 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: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; [L541] COND TRUE __VERIFIER_nondet_int() [L542] COND TRUE \read(flag) [L543] p->h = 1 [L544] flag = 0 [L549] t = (List) malloc(sizeof(struct node)) [L550] COND FALSE !(t == 0) [L551] p->n = t [L552] EXPR p->n [L552] p = p->n [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 [L555] EXPR a->h [L555] COND FALSE !(a->h == 3) [L556] flag = 1 [L557] l1 = 0 [L558] l2 = 0 [L559] p = a [L560] EXPR p->h [L560] COND TRUE p->h != 3 [L561] t = p [L562] EXPR p->n [L562] p = p->n [L563] COND TRUE \read(flag) [L564] t->n = l1 [L565] l1 = t [L566] flag = 0 [L560] EXPR p->h [L560] COND FALSE !(p->h != 3) [L573] p = l1 [L574] COND TRUE p != 0 [L575] EXPR p->h [L575] COND TRUE p->h != 2 [L12] COND FALSE !(0) [L12] __assert_fail ("0", "splice-1.c", 3, __extension__ __PRETTY_FUNCTION__) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 71.3 MB. Free memory was 33.6 MB in the beginning and 33.6 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 496.51 ms. Allocated memory is still 96.5 MB. Free memory was 63.7 MB in the beginning and 60.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 76.66 ms. Allocated memory is still 96.5 MB. Free memory was 60.6 MB in the beginning and 59.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.01 ms. Allocated memory is still 96.5 MB. Free memory was 59.0 MB in the beginning and 57.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 741.54 ms. Allocated memory is still 96.5 MB. Free memory was 57.3 MB in the beginning and 73.0 MB in the end (delta: -15.7 MB). Peak memory consumption was 33.9 MB. Max. memory is 16.1 GB. * CodeCheck took 1289.10 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 73.0 MB in the beginning and 67.7 MB in the end (delta: 5.3 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. * Witness Printer took 97.66 ms. Allocated memory is still 117.4 MB. Free memory was 67.7 MB in the beginning and 64.8 MB in the end (delta: 2.9 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...