./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/recHanoi02-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f0f9a53-40a9-44b7-af7b-716b6d18a845/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f0f9a53-40a9-44b7-af7b-716b6d18a845/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f0f9a53-40a9-44b7-af7b-716b6d18a845/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f0f9a53-40a9-44b7-af7b-716b6d18a845/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/recHanoi02-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f0f9a53-40a9-44b7-af7b-716b6d18a845/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f0f9a53-40a9-44b7-af7b-716b6d18a845/bin/utaipan-WLngWcDbfI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 47fcb479d933beca049827d7d80a7b2ad5309684 ........................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:22:07,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:22:07,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:22:07,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:22:07,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:22:07,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:22:07,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:22:07,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:22:07,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:22:07,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:22:07,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:22:07,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:22:07,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:22:07,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:22:07,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:22:07,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:22:07,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:22:07,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:22:07,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:22:07,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:22:07,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:22:07,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:22:07,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:22:07,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:22:07,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:22:07,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:22:07,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:22:07,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:22:07,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:22:07,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:22:07,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:22:07,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:22:07,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:22:07,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:22:07,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:22:07,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:22:07,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:22:07,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:22:07,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:22:07,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:22:07,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:22:07,145 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f0f9a53-40a9-44b7-af7b-716b6d18a845/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:22:07,195 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:22:07,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:22:07,197 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:22:07,197 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:22:07,197 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:22:07,197 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:22:07,197 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:22:07,198 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:22:07,204 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:22:07,204 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:22:07,205 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:22:07,206 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:22:07,206 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:22:07,206 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:22:07,206 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:22:07,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:22:07,207 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:22:07,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:22:07,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:22:07,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:22:07,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:22:07,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:22:07,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:22:07,208 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:22:07,208 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:22:07,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:22:07,209 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:22:07,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:22:07,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:22:07,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:22:07,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:07,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:22:07,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:22:07,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:22:07,210 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:22:07,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:22:07,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:22:07,211 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:22:07,211 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:22:07,211 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_worker_vcloud-master_on_vcloud-master/run_dir_5f0f9a53-40a9-44b7-af7b-716b6d18a845/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f0f9a53-40a9-44b7-af7b-716b6d18a845/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47fcb479d933beca049827d7d80a7b2ad5309684 [2021-10-11 02:22:07,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:22:07,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:22:07,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:22:07,516 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:22:07,517 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:22:07,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f0f9a53-40a9-44b7-af7b-716b6d18a845/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/recursive/recHanoi02-2.c [2021-10-11 02:22:07,619 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f0f9a53-40a9-44b7-af7b-716b6d18a845/bin/utaipan-WLngWcDbfI/data/36388e686/ac7cbc21c19b42ce8bfb26107d309a80/FLAG198a948df [2021-10-11 02:22:08,041 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:22:08,041 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f0f9a53-40a9-44b7-af7b-716b6d18a845/sv-benchmarks/c/recursive/recHanoi02-2.c [2021-10-11 02:22:08,048 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f0f9a53-40a9-44b7-af7b-716b6d18a845/bin/utaipan-WLngWcDbfI/data/36388e686/ac7cbc21c19b42ce8bfb26107d309a80/FLAG198a948df [2021-10-11 02:22:08,455 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f0f9a53-40a9-44b7-af7b-716b6d18a845/bin/utaipan-WLngWcDbfI/data/36388e686/ac7cbc21c19b42ce8bfb26107d309a80 [2021-10-11 02:22:08,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:22:08,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:22:08,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:08,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:22:08,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:22:08,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:08" (1/1) ... [2021-10-11 02:22:08,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fd0a31a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:08, skipping insertion in model container [2021-10-11 02:22:08,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:08" (1/1) ... [2021-10-11 02:22:08,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:22:08,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:22:08,688 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f0f9a53-40a9-44b7-af7b-716b6d18a845/sv-benchmarks/c/recursive/recHanoi02-2.c[839,852] [2021-10-11 02:22:08,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:08,714 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:22:08,743 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f0f9a53-40a9-44b7-af7b-716b6d18a845/sv-benchmarks/c/recursive/recHanoi02-2.c[839,852] [2021-10-11 02:22:08,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:08,759 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:22:08,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:08 WrapperNode [2021-10-11 02:22:08,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:08,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:08,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:22:08,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:22:08,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:08" (1/1) ... [2021-10-11 02:22:08,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:08" (1/1) ... [2021-10-11 02:22:08,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:08,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:22:08,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:22:08,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:22:08,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:08" (1/1) ... [2021-10-11 02:22:08,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:08" (1/1) ... [2021-10-11 02:22:08,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:08" (1/1) ... [2021-10-11 02:22:08,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:08" (1/1) ... [2021-10-11 02:22:08,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:08" (1/1) ... [2021-10-11 02:22:08,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:08" (1/1) ... [2021-10-11 02:22:08,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:08" (1/1) ... [2021-10-11 02:22:08,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:22:08,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:22:08,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:22:08,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:22:08,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:08" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f0f9a53-40a9-44b7-af7b-716b6d18a845/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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:2000 [2021-10-11 02:22:08,914 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2021-10-11 02:22:08,914 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2021-10-11 02:22:08,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:22:08,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:22:08,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:22:08,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:22:09,176 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:22:09,187 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-11 02:22:09,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:09 BoogieIcfgContainer [2021-10-11 02:22:09,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:22:09,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:22:09,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:22:09,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:22:09,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:22:08" (1/3) ... [2021-10-11 02:22:09,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53756d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:09, skipping insertion in model container [2021-10-11 02:22:09,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:08" (2/3) ... [2021-10-11 02:22:09,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53756d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:09, skipping insertion in model container [2021-10-11 02:22:09,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:09" (3/3) ... [2021-10-11 02:22:09,207 INFO L111 eAbstractionObserver]: Analyzing ICFG recHanoi02-2.c [2021-10-11 02:22:09,235 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:22:09,238 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:22:09,259 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:22:09,286 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:22:09,287 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:22:09,287 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:22:09,287 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:22:09,287 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:22:09,288 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:22:09,288 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:22:09,288 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:22:09,303 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2021-10-11 02:22:09,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:22:09,309 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:09,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:09,310 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:09,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:09,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1546859687, now seen corresponding path program 1 times [2021-10-11 02:22:09,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:09,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77837371] [2021-10-11 02:22:09,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:09,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:09,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77837371] [2021-10-11 02:22:09,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:09,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:22:09,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653887815] [2021-10-11 02:22:09,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:22:09,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:09,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:22:09,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:09,541 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 5 states. [2021-10-11 02:22:09,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:09,588 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-10-11 02:22:09,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:22:09,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-10-11 02:22:09,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:09,599 INFO L225 Difference]: With dead ends: 25 [2021-10-11 02:22:09,599 INFO L226 Difference]: Without dead ends: 15 [2021-10-11 02:22:09,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:22:09,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-11 02:22:09,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-11 02:22:09,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 02:22:09,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-11 02:22:09,702 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2021-10-11 02:22:09,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:09,703 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-11 02:22:09,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:22:09,704 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-10-11 02:22:09,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:22:09,705 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:09,706 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:09,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:22:09,706 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:09,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:09,708 INFO L82 PathProgramCache]: Analyzing trace with hash -797183849, now seen corresponding path program 1 times [2021-10-11 02:22:09,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:09,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827856201] [2021-10-11 02:22:09,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:09,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:22:09,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827856201] [2021-10-11 02:22:09,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281700438] [2021-10-11 02:22:09,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f0f9a53-40a9-44b7-af7b-716b6d18a845/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:09,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:22:09,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:09,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:22:09,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:22:10,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:22:10,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:22:10,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [7] total 13 [2021-10-11 02:22:10,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128969310] [2021-10-11 02:22:10,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 02:22:10,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:10,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 02:22:10,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:22:10,159 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 11 states. [2021-10-11 02:22:10,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:10,182 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-10-11 02:22:10,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:22:10,183 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2021-10-11 02:22:10,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:10,183 INFO L225 Difference]: With dead ends: 15 [2021-10-11 02:22:10,183 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:22:10,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:22:10,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:22:10,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:22:10,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:22:10,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:22:10,186 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-11 02:22:10,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:10,187 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:22:10,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 02:22:10,187 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:22:10,188 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:22:10,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 02:22:10,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:22:10,439 INFO L262 CegarLoopResult]: For program point hanoiEXIT(lines 20 25) no Hoare annotation was computed. [2021-10-11 02:22:10,439 INFO L265 CegarLoopResult]: At program point hanoiENTRY(lines 20 25) the Hoare annotation is: true [2021-10-11 02:22:10,439 INFO L262 CegarLoopResult]: For program point hanoiFINAL(lines 20 25) no Hoare annotation was computed. [2021-10-11 02:22:10,439 INFO L265 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: true [2021-10-11 02:22:10,439 INFO L262 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2021-10-11 02:22:10,439 INFO L262 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2021-10-11 02:22:10,440 INFO L265 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: true [2021-10-11 02:22:10,440 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:22:10,440 INFO L262 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2021-10-11 02:22:10,440 INFO L262 CegarLoopResult]: For program point L30(lines 30 32) no Hoare annotation was computed. [2021-10-11 02:22:10,440 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:22:10,440 INFO L265 CegarLoopResult]: At program point L28(lines 28 39) the Hoare annotation is: true [2021-10-11 02:22:10,441 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 37) no Hoare annotation was computed. [2021-10-11 02:22:10,441 INFO L262 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2021-10-11 02:22:10,441 INFO L262 CegarLoopResult]: For program point L34(lines 34 38) no Hoare annotation was computed. [2021-10-11 02:22:10,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:22:10 BoogieIcfgContainer [2021-10-11 02:22:10,448 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:22:10,449 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:22:10,449 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:22:10,449 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:22:10,450 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:09" (3/4) ... [2021-10-11 02:22:10,453 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:22:10,459 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure hanoi [2021-10-11 02:22:10,464 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-11 02:22:10,464 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:22:10,464 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:22:10,464 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:22:10,504 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f0f9a53-40a9-44b7-af7b-716b6d18a845/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:22:10,504 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:22:10,506 INFO L168 Benchmark]: Toolchain (without parser) took 2045.64 ms. Allocated memory was 88.1 MB in the beginning and 127.9 MB in the end (delta: 39.8 MB). Free memory was 51.2 MB in the beginning and 55.1 MB in the end (delta: -3.9 MB). Peak memory consumption was 37.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:10,507 INFO L168 Benchmark]: CDTParser took 7.45 ms. Allocated memory is still 88.1 MB. Free memory was 67.3 MB in the beginning and 67.3 MB in the end (delta: 38.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:10,508 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.58 ms. Allocated memory was 88.1 MB in the beginning and 127.9 MB in the end (delta: 39.8 MB). Free memory was 51.0 MB in the beginning and 106.9 MB in the end (delta: -55.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:10,509 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.06 ms. Allocated memory is still 127.9 MB. Free memory was 106.8 MB in the beginning and 105.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:10,510 INFO L168 Benchmark]: Boogie Preprocessor took 37.92 ms. Allocated memory is still 127.9 MB. Free memory was 105.5 MB in the beginning and 104.6 MB in the end (delta: 903.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:10,511 INFO L168 Benchmark]: RCFGBuilder took 351.87 ms. Allocated memory is still 127.9 MB. Free memory was 104.5 MB in the beginning and 94.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:10,512 INFO L168 Benchmark]: TraceAbstraction took 1257.28 ms. Allocated memory is still 127.9 MB. Free memory was 94.3 MB in the beginning and 57.2 MB in the end (delta: 37.1 MB). Peak memory consumption was 35.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:10,513 INFO L168 Benchmark]: Witness Printer took 55.02 ms. Allocated memory is still 127.9 MB. Free memory was 57.2 MB in the beginning and 55.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:10,518 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 7.45 ms. Allocated memory is still 88.1 MB. Free memory was 67.3 MB in the beginning and 67.3 MB in the end (delta: 38.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 292.58 ms. Allocated memory was 88.1 MB in the beginning and 127.9 MB in the end (delta: 39.8 MB). Free memory was 51.0 MB in the beginning and 106.9 MB in the end (delta: -55.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.06 ms. Allocated memory is still 127.9 MB. Free memory was 106.8 MB in the beginning and 105.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.92 ms. Allocated memory is still 127.9 MB. Free memory was 105.5 MB in the beginning and 104.6 MB in the end (delta: 903.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 351.87 ms. Allocated memory is still 127.9 MB. Free memory was 104.5 MB in the beginning and 94.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1257.28 ms. Allocated memory is still 127.9 MB. Free memory was 94.3 MB in the beginning and 57.2 MB in the end (delta: 37.1 MB). Peak memory consumption was 35.1 MB. Max. memory is 16.1 GB. * Witness Printer took 55.02 ms. Allocated memory is still 127.9 MB. Free memory was 57.2 MB in the beginning and 55.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 37]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 2 SDslu, 92 SDs, 0 SdLazy, 24 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 6 PreInvPairs, 8 NumberOfFragments, 4 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1518 SizeOfPredicates, 0 NumberOfNonLiveVariables, 68 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 10/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...