./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/Addition01-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cab518-54c3-4c87-a33f-2831fc3c6b0f/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cab518-54c3-4c87-a33f-2831fc3c6b0f/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cab518-54c3-4c87-a33f-2831fc3c6b0f/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cab518-54c3-4c87-a33f-2831fc3c6b0f/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/Addition01-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cab518-54c3-4c87-a33f-2831fc3c6b0f/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cab518-54c3-4c87-a33f-2831fc3c6b0f/bin/utaipan-vmNK8stdcF --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 4af9e26294eb81d37b6ccb692d0b40e4bed5b0d6d3dd72d6af1a80634692c297 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:21:32,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:21:32,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:21:32,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:21:32,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:21:32,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:21:32,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:21:32,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:21:32,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:21:32,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:21:32,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:21:32,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:21:32,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:21:32,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:21:32,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:21:32,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:21:32,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:21:32,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:21:32,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:21:32,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:21:32,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:21:32,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:21:32,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:21:32,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:21:32,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:21:32,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:21:32,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:21:32,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:21:32,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:21:32,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:21:32,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:21:32,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:21:32,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:21:32,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:21:32,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:21:32,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:21:32,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:21:32,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:21:32,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:21:32,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:21:32,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:21:32,187 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cab518-54c3-4c87-a33f-2831fc3c6b0f/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:21:32,234 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:21:32,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:21:32,237 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:21:32,237 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:21:32,238 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:21:32,238 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:21:32,238 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:21:32,239 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:21:32,249 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:21:32,249 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:21:32,250 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:21:32,250 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:21:32,251 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:21:32,251 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:21:32,251 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:21:32,251 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:21:32,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:21:32,252 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:21:32,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:21:32,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:21:32,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:21:32,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:21:32,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:21:32,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:21:32,254 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:21:32,254 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:21:32,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:21:32,255 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:21:32,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:21:32,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:21:32,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:21:32,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:21:32,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:21:32,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:21:32,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:21:32,258 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:21:32,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:21:32,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:21:32,259 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:21:32,259 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:21:32,259 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_b2cab518-54c3-4c87-a33f-2831fc3c6b0f/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cab518-54c3-4c87-a33f-2831fc3c6b0f/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4af9e26294eb81d37b6ccb692d0b40e4bed5b0d6d3dd72d6af1a80634692c297 [2021-11-12 22:21:32,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:21:32,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:21:32,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:21:32,642 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:21:32,642 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:21:32,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cab518-54c3-4c87-a33f-2831fc3c6b0f/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/recursive/Addition01-2.c [2021-11-12 22:21:32,731 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cab518-54c3-4c87-a33f-2831fc3c6b0f/bin/utaipan-vmNK8stdcF/data/525fbac30/10ae2c29030c4d4ba8a61847fb40e538/FLAGcbdaa7365 [2021-11-12 22:21:33,215 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:21:33,216 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cab518-54c3-4c87-a33f-2831fc3c6b0f/sv-benchmarks/c/recursive/Addition01-2.c [2021-11-12 22:21:33,225 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cab518-54c3-4c87-a33f-2831fc3c6b0f/bin/utaipan-vmNK8stdcF/data/525fbac30/10ae2c29030c4d4ba8a61847fb40e538/FLAGcbdaa7365 [2021-11-12 22:21:33,575 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cab518-54c3-4c87-a33f-2831fc3c6b0f/bin/utaipan-vmNK8stdcF/data/525fbac30/10ae2c29030c4d4ba8a61847fb40e538 [2021-11-12 22:21:33,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:21:33,579 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:21:33,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:21:33,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:21:33,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:21:33,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:21:33" (1/1) ... [2021-11-12 22:21:33,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55b8c66e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:33, skipping insertion in model container [2021-11-12 22:21:33,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:21:33" (1/1) ... [2021-11-12 22:21:33,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:21:33,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:21:33,783 WARN L228 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_b2cab518-54c3-4c87-a33f-2831fc3c6b0f/sv-benchmarks/c/recursive/Addition01-2.c[1126,1139] [2021-11-12 22:21:33,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:21:33,802 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:21:33,820 WARN L228 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_b2cab518-54c3-4c87-a33f-2831fc3c6b0f/sv-benchmarks/c/recursive/Addition01-2.c[1126,1139] [2021-11-12 22:21:33,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:21:33,835 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:21:33,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:33 WrapperNode [2021-11-12 22:21:33,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:21:33,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:21:33,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:21:33,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:21:33,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:33" (1/1) ... [2021-11-12 22:21:33,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:33" (1/1) ... [2021-11-12 22:21:33,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:21:33,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:21:33,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:21:33,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:21:33,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:33" (1/1) ... [2021-11-12 22:21:33,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:33" (1/1) ... [2021-11-12 22:21:33,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:33" (1/1) ... [2021-11-12 22:21:33,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:33" (1/1) ... [2021-11-12 22:21:33,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:33" (1/1) ... [2021-11-12 22:21:33,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:33" (1/1) ... [2021-11-12 22:21:33,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:33" (1/1) ... [2021-11-12 22:21:33,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:21:33,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:21:33,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:21:33,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:21:33,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:33" (1/1) ... [2021-11-12 22:21:33,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:21:33,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cab518-54c3-4c87-a33f-2831fc3c6b0f/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:21:33,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cab518-54c3-4c87-a33f-2831fc3c6b0f/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:21:33,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cab518-54c3-4c87-a33f-2831fc3c6b0f/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:21:33,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:21:33,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:21:33,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:21:33,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:21:33,987 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2021-11-12 22:21:33,987 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2021-11-12 22:21:34,194 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:21:34,194 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 22:21:34,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:21:34 BoogieIcfgContainer [2021-11-12 22:21:34,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:21:34,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:21:34,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:21:34,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:21:34,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:21:33" (1/3) ... [2021-11-12 22:21:34,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c59fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:21:34, skipping insertion in model container [2021-11-12 22:21:34,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:21:33" (2/3) ... [2021-11-12 22:21:34,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c59fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:21:34, skipping insertion in model container [2021-11-12 22:21:34,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:21:34" (3/3) ... [2021-11-12 22:21:34,228 INFO L111 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2021-11-12 22:21:34,234 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:21:34,234 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:21:34,308 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:21:34,321 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:21:34,321 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:21:34,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 22:21:34,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 22:21:34,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:34,378 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:34,379 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:21:34,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:34,398 INFO L85 PathProgramCache]: Analyzing trace with hash 731430453, now seen corresponding path program 1 times [2021-11-12 22:21:34,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:21:34,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970590864] [2021-11-12 22:21:34,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:34,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:21:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:34,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:34,903 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:21:34,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970590864] [2021-11-12 22:21:34,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970590864] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:21:34,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:21:34,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-12 22:21:34,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158590963] [2021-11-12 22:21:34,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:21:34,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:21:34,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:21:34,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:21:34,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:21:34,957 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:21:35,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:35,166 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2021-11-12 22:21:35,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:21:35,169 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-12 22:21:35,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:35,185 INFO L225 Difference]: With dead ends: 30 [2021-11-12 22:21:35,185 INFO L226 Difference]: Without dead ends: 20 [2021-11-12 22:21:35,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:21:35,199 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 12 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 115.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.25ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 139.14ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:35,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 83 Unknown, 0 Unchecked, 5.25ms Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 139.14ms Time] [2021-11-12 22:21:35,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-12 22:21:35,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-12 22:21:35,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-12 22:21:35,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2021-11-12 22:21:35,281 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 11 [2021-11-12 22:21:35,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:35,282 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2021-11-12 22:21:35,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:21:35,283 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2021-11-12 22:21:35,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 22:21:35,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:35,306 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:35,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 22:21:35,307 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:21:35,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:35,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1703056242, now seen corresponding path program 1 times [2021-11-12 22:21:35,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:21:35,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069046664] [2021-11-12 22:21:35,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:35,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:21:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:35,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:35,494 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:21:35,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069046664] [2021-11-12 22:21:35,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069046664] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:21:35,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:21:35,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-12 22:21:35,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733716425] [2021-11-12 22:21:35,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:21:35,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 22:21:35,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:21:35,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 22:21:35,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:21:35,502 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:21:35,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:35,624 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2021-11-12 22:21:35,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:21:35,628 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-12 22:21:35,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:35,629 INFO L225 Difference]: With dead ends: 31 [2021-11-12 22:21:35,629 INFO L226 Difference]: Without dead ends: 17 [2021-11-12 22:21:35,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:21:35,632 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.35ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 110.33ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:35,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 38 Invalid, 61 Unknown, 0 Unchecked, 2.35ms Time], IncrementalHoareTripleChecker [6 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 110.33ms Time] [2021-11-12 22:21:35,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-12 22:21:35,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-12 22:21:35,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-12 22:21:35,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-11-12 22:21:35,643 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2021-11-12 22:21:35,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:35,644 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-11-12 22:21:35,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 22:21:35,646 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-11-12 22:21:35,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-12 22:21:35,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:35,650 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:35,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 22:21:35,651 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:21:35,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:35,652 INFO L85 PathProgramCache]: Analyzing trace with hash 280210265, now seen corresponding path program 1 times [2021-11-12 22:21:35,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:21:35,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749526050] [2021-11-12 22:21:35,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:35,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:21:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:35,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:21:35,880 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:21:35,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749526050] [2021-11-12 22:21:35,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749526050] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:21:35,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130657939] [2021-11-12 22:21:35,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:35,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:21:35,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cab518-54c3-4c87-a33f-2831fc3c6b0f/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:21:35,885 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cab518-54c3-4c87-a33f-2831fc3c6b0f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:21:35,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cab518-54c3-4c87-a33f-2831fc3c6b0f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-12 22:21:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:35,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-12 22:21:35,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:36,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:21:36,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:36,797 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:21:36,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130657939] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:21:36,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2134726838] [2021-11-12 22:21:36,827 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-12 22:21:36,827 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:21:36,834 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 22:21:36,841 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:21:36,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2021-11-12 22:21:36,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133339841] [2021-11-12 22:21:36,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 22:21:36,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-12 22:21:36,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:21:36,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-12 22:21:36,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-11-12 22:21:36,850 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 20 states, 17 states have (on average 1.588235294117647) internal successors, (27), 16 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-12 22:21:37,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:37,113 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-11-12 22:21:37,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-12 22:21:37,114 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 1.588235294117647) internal successors, (27), 16 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 18 [2021-11-12 22:21:37,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:37,115 INFO L225 Difference]: With dead ends: 22 [2021-11-12 22:21:37,116 INFO L226 Difference]: Without dead ends: 0 [2021-11-12 22:21:37,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2021-11-12 22:21:37,119 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 18 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 101.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.91ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 121.76ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:37,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 48 Invalid, 144 Unknown, 0 Unchecked, 5.91ms Time], IncrementalHoareTripleChecker [20 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 121.76ms Time] [2021-11-12 22:21:37,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-12 22:21:37,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-12 22:21:37,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:37,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-12 22:21:37,122 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-11-12 22:21:37,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:37,122 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-12 22:21:37,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 1.588235294117647) internal successors, (27), 16 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-12 22:21:37,123 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-12 22:21:37,123 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-12 22:21:37,125 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 22:21:37,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cab518-54c3-4c87-a33f-2831fc3c6b0f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:21:37,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cab518-54c3-4c87-a33f-2831fc3c6b0f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:21:37,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-12 22:21:37,369 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-12 22:21:37,370 INFO L858 garLoopResultBuilder]: For program point L30(lines 30 34) no Hoare annotation was computed. [2021-11-12 22:21:37,370 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-12 22:21:37,370 INFO L861 garLoopResultBuilder]: At program point L28(lines 28 47) the Hoare annotation is: true [2021-11-12 22:21:37,374 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 45) no Hoare annotation was computed. [2021-11-12 22:21:37,374 INFO L858 garLoopResultBuilder]: For program point L45(line 45) no Hoare annotation was computed. [2021-11-12 22:21:37,375 INFO L858 garLoopResultBuilder]: For program point L42(lines 42 46) no Hoare annotation was computed. [2021-11-12 22:21:37,376 INFO L854 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (or (< 0 |ULTIMATE.start_main_~n~0#1|) (= |ULTIMATE.start_main_~n~0#1| 0)) [2021-11-12 22:21:37,376 INFO L858 garLoopResultBuilder]: For program point L41-1(line 41) no Hoare annotation was computed. [2021-11-12 22:21:37,376 INFO L858 garLoopResultBuilder]: For program point L36(lines 36 40) no Hoare annotation was computed. [2021-11-12 22:21:37,376 INFO L854 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: (and (<= addition_~n 0) (<= |addition_#in~m| addition_~m) (<= addition_~m |addition_#in~m|) (not (= |addition_#in~n| 0)) (= |addition_#in~n| addition_~n)) [2021-11-12 22:21:37,377 INFO L858 garLoopResultBuilder]: For program point L22(lines 22 24) no Hoare annotation was computed. [2021-11-12 22:21:37,377 INFO L858 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-11-12 22:21:37,377 INFO L858 garLoopResultBuilder]: For program point additionFINAL(lines 15 25) no Hoare annotation was computed. [2021-11-12 22:21:37,379 INFO L854 garLoopResultBuilder]: At program point L20(line 20) the Hoare annotation is: (and (<= |addition_#in~m| addition_~m) (<= addition_~m |addition_#in~m|) (= |addition_#in~n| addition_~n) (< 0 addition_~n)) [2021-11-12 22:21:37,379 INFO L858 garLoopResultBuilder]: For program point L19(lines 19 21) no Hoare annotation was computed. [2021-11-12 22:21:37,379 INFO L858 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-11-12 22:21:37,379 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2021-11-12 22:21:37,382 INFO L861 garLoopResultBuilder]: At program point additionENTRY(lines 15 25) the Hoare annotation is: true [2021-11-12 22:21:37,383 INFO L858 garLoopResultBuilder]: For program point additionEXIT(lines 15 25) no Hoare annotation was computed. [2021-11-12 22:21:37,386 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-12 22:21:37,388 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:21:37,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:21:37 BoogieIcfgContainer [2021-11-12 22:21:37,401 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:21:37,402 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:21:37,402 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:21:37,403 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:21:37,403 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:21:34" (3/4) ... [2021-11-12 22:21:37,406 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-12 22:21:37,413 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure addition [2021-11-12 22:21:37,419 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-12 22:21:37,419 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-12 22:21:37,420 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-12 22:21:37,420 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-12 22:21:37,464 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cab518-54c3-4c87-a33f-2831fc3c6b0f/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 22:21:37,464 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:21:37,465 INFO L158 Benchmark]: Toolchain (without parser) took 3886.29ms. Allocated memory was 86.0MB in the beginning and 109.1MB in the end (delta: 23.1MB). Free memory was 49.5MB in the beginning and 70.1MB in the end (delta: -20.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:21:37,469 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 86.0MB. Free memory is still 65.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:21:37,470 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.52ms. Allocated memory was 86.0MB in the beginning and 109.1MB in the end (delta: 23.1MB). Free memory was 49.3MB in the beginning and 85.5MB in the end (delta: -36.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 22:21:37,470 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.74ms. Allocated memory is still 109.1MB. Free memory was 85.5MB in the beginning and 84.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:21:37,471 INFO L158 Benchmark]: Boogie Preprocessor took 20.86ms. Allocated memory is still 109.1MB. Free memory was 84.2MB in the beginning and 83.2MB in the end (delta: 969.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:21:37,471 INFO L158 Benchmark]: RCFGBuilder took 300.52ms. Allocated memory is still 109.1MB. Free memory was 82.9MB in the beginning and 73.0MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:21:37,472 INFO L158 Benchmark]: TraceAbstraction took 3202.16ms. Allocated memory is still 109.1MB. Free memory was 72.3MB in the beginning and 73.0MB in the end (delta: -658.2kB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2021-11-12 22:21:37,472 INFO L158 Benchmark]: Witness Printer took 62.12ms. Allocated memory is still 109.1MB. Free memory was 72.2MB in the beginning and 70.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:21:37,475 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 86.0MB. Free memory is still 65.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 255.52ms. Allocated memory was 86.0MB in the beginning and 109.1MB in the end (delta: 23.1MB). Free memory was 49.3MB in the beginning and 85.5MB in the end (delta: -36.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.74ms. Allocated memory is still 109.1MB. Free memory was 85.5MB in the beginning and 84.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.86ms. Allocated memory is still 109.1MB. Free memory was 84.2MB in the beginning and 83.2MB in the end (delta: 969.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 300.52ms. Allocated memory is still 109.1MB. Free memory was 82.9MB in the beginning and 73.0MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3202.16ms. Allocated memory is still 109.1MB. Free memory was 72.3MB in the beginning and 73.0MB in the end (delta: -658.2kB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. * Witness Printer took 62.12ms. Allocated memory is still 109.1MB. Free memory was 72.2MB in the beginning and 70.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 45]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.1s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 59 SdHoareTripleChecker+Valid, 371.24ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 124 SdHoareTripleChecker+Invalid, 304.38ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 112 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 262 IncrementalHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 34 mSDtfsCounter, 262 mSolverCounterSat, 13.51ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 11 PreInvPairs, 13 NumberOfFragments, 39 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 531 SizeOfPredicates, 8 NumberOfNonLiveVariables, 83 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 3/12 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-12 22:21:37,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2cab518-54c3-4c87-a33f-2831fc3c6b0f/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE