./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/nested6.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_d475d6d2-c91a-43f8-9a47-56fb9c590d92/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d475d6d2-c91a-43f8-9a47-56fb9c590d92/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d475d6d2-c91a-43f8-9a47-56fb9c590d92/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d475d6d2-c91a-43f8-9a47-56fb9c590d92/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/loop-invgen/nested6.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d475d6d2-c91a-43f8-9a47-56fb9c590d92/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d475d6d2-c91a-43f8-9a47-56fb9c590d92/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 b3a725921be8310e882457f7f33c9ff7dbee0bc2 ............................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:12:46,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:12:46,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:12:46,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:12:46,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:12:46,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:12:46,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:12:46,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:12:46,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:12:46,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:12:46,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:12:46,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:12:46,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:12:46,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:12:46,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:12:47,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:12:47,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:12:47,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:12:47,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:12:47,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:12:47,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:12:47,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:12:47,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:12:47,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:12:47,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:12:47,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:12:47,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:12:47,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:12:47,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:12:47,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:12:47,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:12:47,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:12:47,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:12:47,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:12:47,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:12:47,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:12:47,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:12:47,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:12:47,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:12:47,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:12:47,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:12:47,072 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d475d6d2-c91a-43f8-9a47-56fb9c590d92/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-30 00:12:47,120 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:12:47,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:12:47,122 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 00:12:47,123 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-30 00:12:47,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:12:47,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:12:47,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:12:47,124 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:12:47,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:12:47,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:12:47,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:12:47,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:12:47,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:12:47,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:12:47,125 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:12:47,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:12:47,126 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:12:47,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:12:47,126 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-30 00:12:47,127 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-30 00:12:47,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:12:47,127 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:12:47,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-30 00:12:47,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:12:47,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:12:47,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:12:47,129 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-30 00:12:47,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:12:47,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:12:47,129 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_d475d6d2-c91a-43f8-9a47-56fb9c590d92/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d475d6d2-c91a-43f8-9a47-56fb9c590d92/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3a725921be8310e882457f7f33c9ff7dbee0bc2 [2020-11-30 00:12:47,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:12:47,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:12:47,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:12:47,461 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:12:47,463 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:12:47,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d475d6d2-c91a-43f8-9a47-56fb9c590d92/bin/ukojak/../../sv-benchmarks/c/loop-invgen/nested6.i [2020-11-30 00:12:47,561 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d475d6d2-c91a-43f8-9a47-56fb9c590d92/bin/ukojak/data/677043391/1b883ca7741a4d8d9c6d138ff6b12e80/FLAG4636878eb [2020-11-30 00:12:48,155 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:12:48,156 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d475d6d2-c91a-43f8-9a47-56fb9c590d92/sv-benchmarks/c/loop-invgen/nested6.i [2020-11-30 00:12:48,168 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d475d6d2-c91a-43f8-9a47-56fb9c590d92/bin/ukojak/data/677043391/1b883ca7741a4d8d9c6d138ff6b12e80/FLAG4636878eb [2020-11-30 00:12:48,508 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d475d6d2-c91a-43f8-9a47-56fb9c590d92/bin/ukojak/data/677043391/1b883ca7741a4d8d9c6d138ff6b12e80 [2020-11-30 00:12:48,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:12:48,517 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:12:48,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:12:48,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:12:48,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:12:48,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:12:48" (1/1) ... [2020-11-30 00:12:48,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@255403cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:48, skipping insertion in model container [2020-11-30 00:12:48,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:12:48" (1/1) ... [2020-11-30 00:12:48,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:12:48,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:12:48,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:12:48,872 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:12:48,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:12:48,912 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:12:48,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:48 WrapperNode [2020-11-30 00:12:48,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:12:48,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:12:48,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:12:48,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:12:48,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:48" (1/1) ... [2020-11-30 00:12:48,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:48" (1/1) ... [2020-11-30 00:12:48,977 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:12:48,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:12:48,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:12:48,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:12:48,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:48" (1/1) ... [2020-11-30 00:12:48,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:48" (1/1) ... [2020-11-30 00:12:49,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:48" (1/1) ... [2020-11-30 00:12:49,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:48" (1/1) ... [2020-11-30 00:12:49,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:48" (1/1) ... [2020-11-30 00:12:49,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:48" (1/1) ... [2020-11-30 00:12:49,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:48" (1/1) ... [2020-11-30 00:12:49,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:12:49,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:12:49,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:12:49,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:12:49,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d475d6d2-c91a-43f8-9a47-56fb9c590d92/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 [2020-11-30 00:12:49,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:12:49,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:12:49,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:12:49,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:12:49,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-30 00:12:49,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-30 00:12:49,642 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:12:49,642 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 00:12:49,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:12:49 BoogieIcfgContainer [2020-11-30 00:12:49,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:12:49,646 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-30 00:12:49,647 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-30 00:12:49,674 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-30 00:12:49,675 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:12:49" (1/1) ... [2020-11-30 00:12:49,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:49,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:12:49,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 23 states and 32 transitions. [2020-11-30 00:12:49,742 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2020-11-30 00:12:49,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:12:49,750 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:12:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:50,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:12:50,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:12:50,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 28 states and 40 transitions. [2020-11-30 00:12:50,251 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2020-11-30 00:12:50,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:12:50,254 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:12:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:12:50,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:12:50,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 32 states and 49 transitions. [2020-11-30 00:12:50,687 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 49 transitions. [2020-11-30 00:12:50,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:12:50,689 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:12:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:50,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:12:51,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:12:51,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 37 states and 60 transitions. [2020-11-30 00:12:51,157 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 60 transitions. [2020-11-30 00:12:51,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:12:51,159 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:12:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:51,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:12:51,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:12:51,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 38 states and 61 transitions. [2020-11-30 00:12:51,236 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 61 transitions. [2020-11-30 00:12:51,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:12:51,237 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:12:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:51,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:12:51,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:12:51,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 41 states and 70 transitions. [2020-11-30 00:12:51,947 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 70 transitions. [2020-11-30 00:12:51,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 00:12:51,949 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:12:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:52,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:12:52,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:12:52,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 41 states and 69 transitions. [2020-11-30 00:12:52,139 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 69 transitions. [2020-11-30 00:12:52,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 00:12:52,140 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:12:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 00:12:52,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:12:52,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 36 states and 58 transitions. [2020-11-30 00:12:52,666 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 58 transitions. [2020-11-30 00:12:52,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 00:12:52,667 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:12:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:52,920 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:12:54,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:12:54,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 42 states and 70 transitions. [2020-11-30 00:12:54,121 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 70 transitions. [2020-11-30 00:12:54,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 00:12:54,122 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:12:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:54,220 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-30 00:12:54,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:12:54,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 45 states and 78 transitions. [2020-11-30 00:12:54,627 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 78 transitions. [2020-11-30 00:12:54,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 00:12:54,629 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:12:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:54,676 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-30 00:12:55,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:12:55,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 47 states and 82 transitions. [2020-11-30 00:12:55,332 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 82 transitions. [2020-11-30 00:12:55,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-30 00:12:55,336 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:12:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:55,365 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 00:12:55,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:12:55,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 48 states and 83 transitions. [2020-11-30 00:12:55,664 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 83 transitions. [2020-11-30 00:12:55,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-30 00:12:55,666 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:12:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:55,713 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-30 00:12:55,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:12:55,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 49 states and 83 transitions. [2020-11-30 00:12:55,961 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 83 transitions. [2020-11-30 00:12:55,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-30 00:12:55,962 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:12:55,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:56,024 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-30 00:12:56,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:12:56,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 42 states and 65 transitions. [2020-11-30 00:12:56,941 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 65 transitions. [2020-11-30 00:12:56,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-30 00:12:56,942 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 00:12:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:56,999 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-30 00:12:57,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 00:12:57,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 28 states and 43 transitions. [2020-11-30 00:12:57,469 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 43 transitions. [2020-11-30 00:12:57,469 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:12:57,470 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 15 iterations. [2020-11-30 00:12:57,479 INFO L765 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2020-11-30 00:12:57,711 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-11-30 00:12:57,715 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-11-30 00:12:57,716 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-11-30 00:12:57,716 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-11-30 00:12:57,716 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-11-30 00:12:57,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 30.11 12:12:57 ImpRootNode [2020-11-30 00:12:57,717 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-30 00:12:57,718 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:12:57,718 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:12:57,719 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:12:57,720 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:12:49" (3/4) ... [2020-11-30 00:12:57,724 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:12:57,732 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2020-11-30 00:12:57,737 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-30 00:12:57,738 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-30 00:12:57,738 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:12:57,739 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:12:57,823 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d475d6d2-c91a-43f8-9a47-56fb9c590d92/bin/ukojak/witness.graphml [2020-11-30 00:12:57,824 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:12:57,826 INFO L168 Benchmark]: Toolchain (without parser) took 9308.35 ms. Allocated memory was 81.8 MB in the beginning and 176.2 MB in the end (delta: 94.4 MB). Free memory was 52.3 MB in the beginning and 94.1 MB in the end (delta: -41.8 MB). Peak memory consumption was 53.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:57,827 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 81.8 MB. Free memory was 41.5 MB in the beginning and 41.5 MB in the end (delta: 41.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:12:57,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.67 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 52.0 MB in the beginning and 78.5 MB in the end (delta: -26.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:57,829 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.59 ms. Allocated memory is still 100.7 MB. Free memory was 78.5 MB in the beginning and 77.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:57,830 INFO L168 Benchmark]: Boogie Preprocessor took 60.21 ms. Allocated memory is still 100.7 MB. Free memory was 77.4 MB in the beginning and 76.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:12:57,831 INFO L168 Benchmark]: RCFGBuilder took 605.44 ms. Allocated memory is still 100.7 MB. Free memory was 76.3 MB in the beginning and 59.1 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:57,832 INFO L168 Benchmark]: CodeCheck took 8071.01 ms. Allocated memory was 100.7 MB in the beginning and 176.2 MB in the end (delta: 75.5 MB). Free memory was 59.1 MB in the beginning and 97.2 MB in the end (delta: -38.1 MB). Peak memory consumption was 39.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:57,833 INFO L168 Benchmark]: Witness Printer took 106.01 ms. Allocated memory is still 176.2 MB. Free memory was 97.2 MB in the beginning and 94.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:57,838 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, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.7s, OverallIterations: 15, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 164352 SDtfs, 134684 SDslu, 78528 SDs, 0 SdLazy, 606062 SolverSat, 148150 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2738 GetRequests, 2561 SyntacticMatches, 63 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4619 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 310 NumberOfCodeBlocks, 310 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 296 ConstructedInterpolants, 0 QuantifiedInterpolants, 16160 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 110/132 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 - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 81.8 MB. Free memory was 41.5 MB in the beginning and 41.5 MB in the end (delta: 41.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 388.67 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 52.0 MB in the beginning and 78.5 MB in the end (delta: -26.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.59 ms. Allocated memory is still 100.7 MB. Free memory was 78.5 MB in the beginning and 77.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.21 ms. Allocated memory is still 100.7 MB. Free memory was 77.4 MB in the beginning and 76.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 605.44 ms. Allocated memory is still 100.7 MB. Free memory was 76.3 MB in the beginning and 59.1 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * CodeCheck took 8071.01 ms. Allocated memory was 100.7 MB in the beginning and 176.2 MB in the end (delta: 75.5 MB). Free memory was 59.1 MB in the beginning and 97.2 MB in the end (delta: -38.1 MB). Peak memory consumption was 39.5 MB. Max. memory is 16.1 GB. * Witness Printer took 106.01 ms. Allocated memory is still 176.2 MB. Free memory was 97.2 MB in the beginning and 94.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...