./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label15.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4cb36d-f120-49f5-bb3c-a7c5ab24ff08/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4cb36d-f120-49f5-bb3c-a7c5ab24ff08/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4cb36d-f120-49f5-bb3c-a7c5ab24ff08/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4cb36d-f120-49f5-bb3c-a7c5ab24ff08/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label15.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4cb36d-f120-49f5-bb3c-a7c5ab24ff08/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4cb36d-f120-49f5-bb3c-a7c5ab24ff08/bin/utaipan-9zjyvhn0QE --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 303e81240b0a1989638e497fa3fbaa4e2ebd948d9aafa1986663f2c99e7f43f3 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:49:35,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:49:35,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:49:35,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:49:35,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:49:35,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:49:35,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:49:35,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:49:35,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:49:35,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:49:35,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:49:35,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:49:35,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:49:35,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:49:35,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:49:35,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:49:35,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:49:35,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:49:35,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:49:35,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:49:35,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:49:35,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:49:35,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:49:35,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:49:35,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:49:35,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:49:35,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:49:35,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:49:35,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:49:35,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:49:35,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:49:35,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:49:35,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:49:35,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:49:35,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:49:35,225 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:49:35,226 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:49:35,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:49:35,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:49:35,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:49:35,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:49:35,229 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4cb36d-f120-49f5-bb3c-a7c5ab24ff08/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 09:49:35,270 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:49:35,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:49:35,271 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:49:35,271 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:49:35,272 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:49:35,272 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:49:35,272 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:49:35,272 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:49:35,273 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:49:35,273 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:49:35,273 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:49:35,273 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:49:35,274 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:49:35,274 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:49:35,274 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:49:35,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:49:35,275 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:49:35,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:49:35,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:49:35,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:49:35,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:49:35,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:49:35,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:49:35,277 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:49:35,277 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:49:35,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:49:35,277 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:49:35,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:49:35,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:49:35,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:49:35,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:49:35,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:49:35,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:49:35,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:49:35,279 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:49:35,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:49:35,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:49:35,280 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:49:35,280 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:49:35,281 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_ed4cb36d-f120-49f5-bb3c-a7c5ab24ff08/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4cb36d-f120-49f5-bb3c-a7c5ab24ff08/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 303e81240b0a1989638e497fa3fbaa4e2ebd948d9aafa1986663f2c99e7f43f3 [2021-10-24 09:49:35,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:49:35,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:49:35,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:49:35,563 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:49:35,564 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:49:35,564 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4cb36d-f120-49f5-bb3c-a7c5ab24ff08/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/eca-rers2012/Problem02_label15.c [2021-10-24 09:49:35,632 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4cb36d-f120-49f5-bb3c-a7c5ab24ff08/bin/utaipan-9zjyvhn0QE/data/59896ea49/0494febbe401496eaadfc6a68c4d3e9b/FLAG361b415f1 [2021-10-24 09:49:36,185 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:49:36,195 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4cb36d-f120-49f5-bb3c-a7c5ab24ff08/sv-benchmarks/c/eca-rers2012/Problem02_label15.c [2021-10-24 09:49:36,210 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4cb36d-f120-49f5-bb3c-a7c5ab24ff08/bin/utaipan-9zjyvhn0QE/data/59896ea49/0494febbe401496eaadfc6a68c4d3e9b/FLAG361b415f1 [2021-10-24 09:49:36,460 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4cb36d-f120-49f5-bb3c-a7c5ab24ff08/bin/utaipan-9zjyvhn0QE/data/59896ea49/0494febbe401496eaadfc6a68c4d3e9b [2021-10-24 09:49:36,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:49:36,464 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:49:36,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:49:36,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:49:36,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:49:36,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:49:36" (1/1) ... [2021-10-24 09:49:36,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b74921f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:36, skipping insertion in model container [2021-10-24 09:49:36,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:49:36" (1/1) ... [2021-10-24 09:49:36,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:49:36,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:49:37,065 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_ed4cb36d-f120-49f5-bb3c-a7c5ab24ff08/sv-benchmarks/c/eca-rers2012/Problem02_label15.c[20193,20206] [2021-10-24 09:49:37,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:49:37,101 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:49:37,192 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_ed4cb36d-f120-49f5-bb3c-a7c5ab24ff08/sv-benchmarks/c/eca-rers2012/Problem02_label15.c[20193,20206] [2021-10-24 09:49:37,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:49:37,211 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:49:37,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:37 WrapperNode [2021-10-24 09:49:37,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:49:37,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:49:37,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:49:37,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:49:37,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:37" (1/1) ... [2021-10-24 09:49:37,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:37" (1/1) ... [2021-10-24 09:49:37,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:49:37,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:49:37,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:49:37,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:49:37,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:37" (1/1) ... [2021-10-24 09:49:37,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:37" (1/1) ... [2021-10-24 09:49:37,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:37" (1/1) ... [2021-10-24 09:49:37,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:37" (1/1) ... [2021-10-24 09:49:37,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:37" (1/1) ... [2021-10-24 09:49:37,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:37" (1/1) ... [2021-10-24 09:49:37,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:37" (1/1) ... [2021-10-24 09:49:37,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:49:37,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:49:37,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:49:37,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:49:37,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:37" (1/1) ... [2021-10-24 09:49:37,447 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:49:37,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4cb36d-f120-49f5-bb3c-a7c5ab24ff08/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:49:37,468 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4cb36d-f120-49f5-bb3c-a7c5ab24ff08/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:49:37,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4cb36d-f120-49f5-bb3c-a7c5ab24ff08/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:49:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 09:49:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:49:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:49:37,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:49:39,260 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:49:39,261 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-24 09:49:39,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:49:39 BoogieIcfgContainer [2021-10-24 09:49:39,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:49:39,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:49:39,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:49:39,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:49:39,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:49:36" (1/3) ... [2021-10-24 09:49:39,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28df0839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:49:39, skipping insertion in model container [2021-10-24 09:49:39,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:49:37" (2/3) ... [2021-10-24 09:49:39,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28df0839 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:49:39, skipping insertion in model container [2021-10-24 09:49:39,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:49:39" (3/3) ... [2021-10-24 09:49:39,272 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label15.c [2021-10-24 09:49:39,277 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:49:39,278 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 09:49:39,334 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:49:39,342 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 [2021-10-24 09:49:39,343 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 09:49:39,360 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 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) [2021-10-24 09:49:39,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-24 09:49:39,370 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:49:39,371 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:49:39,371 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:49:39,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:49:39,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1814584087, now seen corresponding path program 1 times [2021-10-24 09:49:39,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:49:39,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853629997] [2021-10-24 09:49:39,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:39,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:49:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:49:39,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:49:39,746 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:49:39,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853629997] [2021-10-24 09:49:39,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853629997] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:49:39,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:49:39,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:49:39,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729722957] [2021-10-24 09:49:39,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:49:39,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:49:39,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:49:39,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:39,776 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 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) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2021-10-24 09:49:40,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:49:40,220 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-24 09:49:40,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:49:40,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) Word has length 80 [2021-10-24 09:49:40,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:49:40,239 INFO L225 Difference]: With dead ends: 251 [2021-10-24 09:49:40,240 INFO L226 Difference]: Without dead ends: 163 [2021-10-24 09:49:40,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:40,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-24 09:49:40,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-24 09:49:40,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.9320987654320987) internal successors, (313), 162 states have internal predecessors, (313), 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) [2021-10-24 09:49:40,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2021-10-24 09:49:40,324 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2021-10-24 09:49:40,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:49:40,325 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2021-10-24 09:49:40,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2021-10-24 09:49:40,326 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2021-10-24 09:49:40,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-24 09:49:40,332 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:49:40,332 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:49:40,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 09:49:40,333 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:49:40,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:49:40,337 INFO L82 PathProgramCache]: Analyzing trace with hash -329013783, now seen corresponding path program 1 times [2021-10-24 09:49:40,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:49:40,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636237466] [2021-10-24 09:49:40,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:40,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:49:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:49:40,411 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:49:40,412 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:49:40,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636237466] [2021-10-24 09:49:40,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636237466] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:49:40,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:49:40,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:49:40,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748287294] [2021-10-24 09:49:40,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:49:40,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:49:40,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:49:40,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:40,416 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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) [2021-10-24 09:49:40,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:49:40,768 INFO L93 Difference]: Finished difference Result 485 states and 936 transitions. [2021-10-24 09:49:40,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:49:40,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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) Word has length 91 [2021-10-24 09:49:40,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:49:40,771 INFO L225 Difference]: With dead ends: 485 [2021-10-24 09:49:40,771 INFO L226 Difference]: Without dead ends: 323 [2021-10-24 09:49:40,773 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:40,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-24 09:49:40,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 243. [2021-10-24 09:49:40,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.871900826446281) internal successors, (453), 242 states have internal predecessors, (453), 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) [2021-10-24 09:49:40,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 453 transitions. [2021-10-24 09:49:40,800 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 453 transitions. Word has length 91 [2021-10-24 09:49:40,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:49:40,802 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 453 transitions. [2021-10-24 09:49:40,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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) [2021-10-24 09:49:40,803 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 453 transitions. [2021-10-24 09:49:40,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-24 09:49:40,808 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:49:40,808 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:49:40,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 09:49:40,808 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:49:40,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:49:40,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1679360758, now seen corresponding path program 1 times [2021-10-24 09:49:40,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:49:40,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121034683] [2021-10-24 09:49:40,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:40,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:49:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:49:40,936 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:49:40,937 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:49:40,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121034683] [2021-10-24 09:49:40,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121034683] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:49:40,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:49:40,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:49:40,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433468931] [2021-10-24 09:49:40,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:49:40,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:49:40,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:49:40,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:40,939 INFO L87 Difference]: Start difference. First operand 243 states and 453 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) [2021-10-24 09:49:41,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:49:41,239 INFO L93 Difference]: Finished difference Result 725 states and 1356 transitions. [2021-10-24 09:49:41,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:49:41,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) Word has length 98 [2021-10-24 09:49:41,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:49:41,245 INFO L225 Difference]: With dead ends: 725 [2021-10-24 09:49:41,245 INFO L226 Difference]: Without dead ends: 483 [2021-10-24 09:49:41,249 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:41,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-10-24 09:49:41,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 403. [2021-10-24 09:49:41,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 1.7860696517412935) internal successors, (718), 402 states have internal predecessors, (718), 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) [2021-10-24 09:49:41,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 718 transitions. [2021-10-24 09:49:41,277 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 718 transitions. Word has length 98 [2021-10-24 09:49:41,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:49:41,277 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 718 transitions. [2021-10-24 09:49:41,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) [2021-10-24 09:49:41,278 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 718 transitions. [2021-10-24 09:49:41,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-24 09:49:41,280 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:49:41,280 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:49:41,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 09:49:41,280 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:49:41,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:49:41,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1886019200, now seen corresponding path program 1 times [2021-10-24 09:49:41,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:49:41,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020165666] [2021-10-24 09:49:41,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:41,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:49:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:49:41,336 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:49:41,336 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:49:41,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020165666] [2021-10-24 09:49:41,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020165666] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:49:41,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:49:41,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:49:41,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151728371] [2021-10-24 09:49:41,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:49:41,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:49:41,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:49:41,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:41,339 INFO L87 Difference]: Start difference. First operand 403 states and 718 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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) [2021-10-24 09:49:41,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:49:41,675 INFO L93 Difference]: Finished difference Result 1205 states and 2151 transitions. [2021-10-24 09:49:41,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:49:41,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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) Word has length 102 [2021-10-24 09:49:41,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:49:41,681 INFO L225 Difference]: With dead ends: 1205 [2021-10-24 09:49:41,681 INFO L226 Difference]: Without dead ends: 803 [2021-10-24 09:49:41,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:41,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2021-10-24 09:49:41,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 723. [2021-10-24 09:49:41,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 1.6454293628808865) internal successors, (1188), 722 states have internal predecessors, (1188), 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) [2021-10-24 09:49:41,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1188 transitions. [2021-10-24 09:49:41,728 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1188 transitions. Word has length 102 [2021-10-24 09:49:41,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:49:41,729 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 1188 transitions. [2021-10-24 09:49:41,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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) [2021-10-24 09:49:41,731 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1188 transitions. [2021-10-24 09:49:41,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-10-24 09:49:41,734 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:49:41,734 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:49:41,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-24 09:49:41,735 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:49:41,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:49:41,736 INFO L82 PathProgramCache]: Analyzing trace with hash 862385438, now seen corresponding path program 1 times [2021-10-24 09:49:41,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:49:41,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417211119] [2021-10-24 09:49:41,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:41,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:49:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:49:41,816 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-10-24 09:49:41,816 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:49:41,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417211119] [2021-10-24 09:49:41,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417211119] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:49:41,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:49:41,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:49:41,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568566289] [2021-10-24 09:49:41,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:49:41,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:49:41,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:49:41,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:41,821 INFO L87 Difference]: Start difference. First operand 723 states and 1188 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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) [2021-10-24 09:49:42,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:49:42,235 INFO L93 Difference]: Finished difference Result 1605 states and 2610 transitions. [2021-10-24 09:49:42,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:49:42,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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) Word has length 128 [2021-10-24 09:49:42,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:49:42,243 INFO L225 Difference]: With dead ends: 1605 [2021-10-24 09:49:42,243 INFO L226 Difference]: Without dead ends: 883 [2021-10-24 09:49:42,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:42,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-10-24 09:49:42,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2021-10-24 09:49:42,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.5453514739229024) internal successors, (1363), 882 states have internal predecessors, (1363), 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) [2021-10-24 09:49:42,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1363 transitions. [2021-10-24 09:49:42,289 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1363 transitions. Word has length 128 [2021-10-24 09:49:42,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:49:42,290 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1363 transitions. [2021-10-24 09:49:42,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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) [2021-10-24 09:49:42,290 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1363 transitions. [2021-10-24 09:49:42,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-10-24 09:49:42,313 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:49:42,313 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:49:42,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-24 09:49:42,313 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:49:42,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:49:42,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1901983935, now seen corresponding path program 1 times [2021-10-24 09:49:42,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:49:42,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174922328] [2021-10-24 09:49:42,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:42,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:49:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:49:42,376 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-10-24 09:49:42,379 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:49:42,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174922328] [2021-10-24 09:49:42,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174922328] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:49:42,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:49:42,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:49:42,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397274137] [2021-10-24 09:49:42,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:49:42,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:49:42,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:49:42,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:42,388 INFO L87 Difference]: Start difference. First operand 883 states and 1363 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2021-10-24 09:49:42,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:49:42,753 INFO L93 Difference]: Finished difference Result 2245 states and 3460 transitions. [2021-10-24 09:49:42,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:49:42,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) Word has length 133 [2021-10-24 09:49:42,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:49:42,762 INFO L225 Difference]: With dead ends: 2245 [2021-10-24 09:49:42,762 INFO L226 Difference]: Without dead ends: 1363 [2021-10-24 09:49:42,764 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:42,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2021-10-24 09:49:42,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1363. [2021-10-24 09:49:42,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1362 states have (on average 1.4045521292217327) internal successors, (1913), 1362 states have internal predecessors, (1913), 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) [2021-10-24 09:49:42,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1913 transitions. [2021-10-24 09:49:42,811 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1913 transitions. Word has length 133 [2021-10-24 09:49:42,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:49:42,812 INFO L470 AbstractCegarLoop]: Abstraction has 1363 states and 1913 transitions. [2021-10-24 09:49:42,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2021-10-24 09:49:42,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1913 transitions. [2021-10-24 09:49:42,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-10-24 09:49:42,816 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:49:42,816 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:49:42,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-24 09:49:42,817 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:49:42,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:49:42,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1486173925, now seen corresponding path program 1 times [2021-10-24 09:49:42,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:49:42,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964226362] [2021-10-24 09:49:42,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:42,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:49:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:49:42,864 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-24 09:49:42,865 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:49:42,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964226362] [2021-10-24 09:49:42,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964226362] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:49:42,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:49:42,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:49:42,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842801969] [2021-10-24 09:49:42,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:49:42,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:49:42,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:49:42,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:42,867 INFO L87 Difference]: Start difference. First operand 1363 states and 1913 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-10-24 09:49:43,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:49:43,216 INFO L93 Difference]: Finished difference Result 3205 states and 4430 transitions. [2021-10-24 09:49:43,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:49:43,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) Word has length 135 [2021-10-24 09:49:43,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:49:43,228 INFO L225 Difference]: With dead ends: 3205 [2021-10-24 09:49:43,228 INFO L226 Difference]: Without dead ends: 1843 [2021-10-24 09:49:43,230 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:43,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2021-10-24 09:49:43,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1683. [2021-10-24 09:49:43,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 1.3394768133174793) internal successors, (2253), 1682 states have internal predecessors, (2253), 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) [2021-10-24 09:49:43,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2253 transitions. [2021-10-24 09:49:43,275 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2253 transitions. Word has length 135 [2021-10-24 09:49:43,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:49:43,276 INFO L470 AbstractCegarLoop]: Abstraction has 1683 states and 2253 transitions. [2021-10-24 09:49:43,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-10-24 09:49:43,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2253 transitions. [2021-10-24 09:49:43,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-10-24 09:49:43,280 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:49:43,281 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:49:43,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-24 09:49:43,281 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:49:43,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:49:43,282 INFO L82 PathProgramCache]: Analyzing trace with hash 497090661, now seen corresponding path program 1 times [2021-10-24 09:49:43,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:49:43,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256497426] [2021-10-24 09:49:43,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:43,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:49:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:49:43,328 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-24 09:49:43,328 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:49:43,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256497426] [2021-10-24 09:49:43,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256497426] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:49:43,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:49:43,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:49:43,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145672645] [2021-10-24 09:49:43,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:49:43,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:49:43,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:49:43,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:43,331 INFO L87 Difference]: Start difference. First operand 1683 states and 2253 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2021-10-24 09:49:43,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:49:43,648 INFO L93 Difference]: Finished difference Result 3205 states and 4325 transitions. [2021-10-24 09:49:43,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:49:43,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) Word has length 139 [2021-10-24 09:49:43,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:49:43,658 INFO L225 Difference]: With dead ends: 3205 [2021-10-24 09:49:43,658 INFO L226 Difference]: Without dead ends: 1523 [2021-10-24 09:49:43,660 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:49:43,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-10-24 09:49:43,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1523. [2021-10-24 09:49:43,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.283180026281209) internal successors, (1953), 1522 states have internal predecessors, (1953), 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) [2021-10-24 09:49:43,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1953 transitions. [2021-10-24 09:49:43,710 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1953 transitions. Word has length 139 [2021-10-24 09:49:43,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:49:43,710 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 1953 transitions. [2021-10-24 09:49:43,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2021-10-24 09:49:43,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1953 transitions. [2021-10-24 09:49:43,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-10-24 09:49:43,715 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:49:43,715 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:49:43,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-24 09:49:43,715 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:49:43,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:49:43,716 INFO L82 PathProgramCache]: Analyzing trace with hash -687530883, now seen corresponding path program 1 times [2021-10-24 09:49:43,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:49:43,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777240135] [2021-10-24 09:49:43,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:43,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:49:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:49:43,809 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 92 proven. 8 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-10-24 09:49:43,810 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:49:43,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777240135] [2021-10-24 09:49:43,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777240135] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 09:49:43,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691760619] [2021-10-24 09:49:43,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:49:43,811 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:49:43,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4cb36d-f120-49f5-bb3c-a7c5ab24ff08/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:49:43,812 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4cb36d-f120-49f5-bb3c-a7c5ab24ff08/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:49:43,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4cb36d-f120-49f5-bb3c-a7c5ab24ff08/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 09:49:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:49:43,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 09:49:43,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:49:44,483 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-10-24 09:49:44,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:49:44,860 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-10-24 09:49:44,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691760619] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:49:44,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-24 09:49:44,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-24 09:49:44,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520458706] [2021-10-24 09:49:44,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:49:44,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:49:44,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:49:44,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:49:44,862 INFO L87 Difference]: Start difference. First operand 1523 states and 1953 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2021-10-24 09:49:45,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:49:45,182 INFO L93 Difference]: Finished difference Result 3363 states and 4344 transitions. [2021-10-24 09:49:45,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:49:45,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) Word has length 157 [2021-10-24 09:49:45,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:49:45,183 INFO L225 Difference]: With dead ends: 3363 [2021-10-24 09:49:45,183 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 09:49:45,186 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 311 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.5ms TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:49:45,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 09:49:45,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 09:49:45,187 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) [2021-10-24 09:49:45,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 09:49:45,187 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 157 [2021-10-24 09:49:45,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:49:45,187 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 09:49:45,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2021-10-24 09:49:45,188 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 09:49:45,188 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 09:49:45,190 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:49:45,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4cb36d-f120-49f5-bb3c-a7c5ab24ff08/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 09:49:45,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4cb36d-f120-49f5-bb3c-a7c5ab24ff08/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:49:45,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 09:49:45,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:49:45,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:49:45,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:49:45,624 INFO L857 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-24 09:49:45,624 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-24 09:49:45,624 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-24 09:49:45,624 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-24 09:49:45,624 INFO L857 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-24 09:49:45,624 INFO L857 garLoopResultBuilder]: For program point L568-1(lines 39 608) no Hoare annotation was computed. [2021-10-24 09:49:45,624 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-24 09:49:45,624 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-24 09:49:45,624 INFO L857 garLoopResultBuilder]: For program point L571-1(lines 39 608) no Hoare annotation was computed. [2021-10-24 09:49:45,624 INFO L857 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-24 09:49:45,625 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-24 09:49:45,625 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-24 09:49:45,625 INFO L857 garLoopResultBuilder]: For program point L572(line 572) no Hoare annotation was computed. [2021-10-24 09:49:45,625 INFO L857 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-24 09:49:45,625 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-24 09:49:45,625 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-24 09:49:45,625 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-24 09:49:45,625 INFO L857 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-24 09:49:45,625 INFO L857 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-24 09:49:45,625 INFO L857 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-24 09:49:45,625 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-24 09:49:45,625 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-24 09:49:45,626 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-24 09:49:45,626 INFO L857 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-24 09:49:45,626 INFO L857 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-24 09:49:45,626 INFO L857 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-24 09:49:45,626 INFO L857 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-24 09:49:45,626 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-24 09:49:45,626 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-24 09:49:45,626 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 09:49:45,626 INFO L857 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-24 09:49:45,626 INFO L857 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-24 09:49:45,626 INFO L857 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-24 09:49:45,626 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-24 09:49:45,626 INFO L857 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-24 09:49:45,627 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-24 09:49:45,627 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-24 09:49:45,627 INFO L857 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-24 09:49:45,627 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-24 09:49:45,627 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 572) no Hoare annotation was computed. [2021-10-24 09:49:45,627 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-24 09:49:45,627 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-24 09:49:45,627 INFO L857 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-24 09:49:45,627 INFO L857 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-24 09:49:45,627 INFO L857 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-24 09:49:45,627 INFO L857 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-24 09:49:45,628 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-24 09:49:45,628 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-24 09:49:45,628 INFO L857 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-24 09:49:45,628 INFO L857 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-24 09:49:45,628 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-24 09:49:45,628 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-24 09:49:45,628 INFO L857 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-24 09:49:45,628 INFO L857 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-24 09:49:45,628 INFO L857 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-24 09:49:45,628 INFO L857 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-24 09:49:45,629 INFO L853 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse3 (= ~a11~0 0)) (.cse2 (= ~a25~0 1)) (.cse0 (= ~a19~0 1)) (.cse4 (<= ~a28~0 10)) (.cse1 (= ~a25~0 0))) (or (and .cse0 .cse1) (and .cse2 .cse3 .cse4) (and .cse2 (<= ~a28~0 9)) (and (<= 10 ~a28~0) .cse4 .cse0) (and .cse3 .cse1) (and .cse2 (<= 8 ~a17~0) .cse4) (and .cse2 .cse0) (and .cse4 .cse1))) [2021-10-24 09:49:45,629 INFO L857 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-24 09:49:45,629 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-24 09:49:45,629 INFO L860 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-24 09:49:45,629 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-24 09:49:45,629 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-24 09:49:45,629 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-24 09:49:45,629 INFO L857 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-24 09:49:45,629 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-24 09:49:45,629 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 09:49:45,629 INFO L857 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-24 09:49:45,629 INFO L857 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-24 09:49:45,630 INFO L853 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse3 (= ~a11~0 0)) (.cse2 (= ~a25~0 1)) (.cse0 (= ~a19~0 1)) (.cse4 (<= ~a28~0 10)) (.cse1 (= ~a25~0 0))) (or (and .cse0 .cse1) (and .cse2 .cse3 .cse4) (and .cse2 (<= ~a28~0 9)) (and (<= 10 ~a28~0) .cse4 .cse0) (and .cse3 .cse1) (and .cse2 (<= 8 ~a17~0) .cse4) (and .cse2 .cse0) (and .cse4 .cse1))) [2021-10-24 09:49:45,630 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-24 09:49:45,630 INFO L857 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-24 09:49:45,630 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-24 09:49:45,630 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-24 09:49:45,630 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-24 09:49:45,630 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-24 09:49:45,630 INFO L857 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-24 09:49:45,630 INFO L857 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-24 09:49:45,630 INFO L857 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-24 09:49:45,630 INFO L857 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-24 09:49:45,630 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-24 09:49:45,631 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-24 09:49:45,631 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-24 09:49:45,631 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-24 09:49:45,631 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-24 09:49:45,631 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-24 09:49:45,634 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:49:45,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:49:45 BoogieIcfgContainer [2021-10-24 09:49:45,672 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:49:45,672 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:49:45,672 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:49:45,672 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:49:45,673 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:49:39" (3/4) ... [2021-10-24 09:49:45,675 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 09:49:45,704 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2021-10-24 09:49:45,706 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-10-24 09:49:45,707 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-24 09:49:45,709 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 09:49:45,852 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4cb36d-f120-49f5-bb3c-a7c5ab24ff08/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 09:49:45,852 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:49:45,854 INFO L168 Benchmark]: Toolchain (without parser) took 9389.08 ms. Allocated memory was 86.0 MB in the beginning and 174.1 MB in the end (delta: 88.1 MB). Free memory was 46.3 MB in the beginning and 55.0 MB in the end (delta: -8.7 MB). Peak memory consumption was 78.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:49:45,854 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 86.0 MB. Free memory was 64.3 MB in the beginning and 64.2 MB in the end (delta: 53.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:49:45,855 INFO L168 Benchmark]: CACSL2BoogieTranslator took 746.40 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 46.1 MB in the beginning and 63.3 MB in the end (delta: -17.2 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:49:45,855 INFO L168 Benchmark]: Boogie Procedure Inliner took 113.59 ms. Allocated memory is still 104.9 MB. Free memory was 63.3 MB in the beginning and 57.7 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-24 09:49:45,856 INFO L168 Benchmark]: Boogie Preprocessor took 106.02 ms. Allocated memory is still 104.9 MB. Free memory was 57.7 MB in the beginning and 53.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:49:45,856 INFO L168 Benchmark]: RCFGBuilder took 1829.74 ms. Allocated memory is still 104.9 MB. Free memory was 53.5 MB in the beginning and 65.6 MB in the end (delta: -12.1 MB). Peak memory consumption was 28.8 MB. Max. memory is 16.1 GB. [2021-10-24 09:49:45,857 INFO L168 Benchmark]: TraceAbstraction took 6406.36 ms. Allocated memory was 104.9 MB in the beginning and 174.1 MB in the end (delta: 69.2 MB). Free memory was 65.0 MB in the beginning and 69.7 MB in the end (delta: -4.7 MB). Peak memory consumption was 63.7 MB. Max. memory is 16.1 GB. [2021-10-24 09:49:45,857 INFO L168 Benchmark]: Witness Printer took 180.31 ms. Allocated memory is still 174.1 MB. Free memory was 69.7 MB in the beginning and 55.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-24 09:49:45,859 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 86.0 MB. Free memory was 64.3 MB in the beginning and 64.2 MB in the end (delta: 53.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 746.40 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 46.1 MB in the beginning and 63.3 MB in the end (delta: -17.2 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 113.59 ms. Allocated memory is still 104.9 MB. Free memory was 63.3 MB in the beginning and 57.7 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 106.02 ms. Allocated memory is still 104.9 MB. Free memory was 57.7 MB in the beginning and 53.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1829.74 ms. Allocated memory is still 104.9 MB. Free memory was 53.5 MB in the beginning and 65.6 MB in the end (delta: -12.1 MB). Peak memory consumption was 28.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6406.36 ms. Allocated memory was 104.9 MB in the beginning and 174.1 MB in the end (delta: 69.2 MB). Free memory was 65.0 MB in the beginning and 69.7 MB in the end (delta: -4.7 MB). Peak memory consumption was 63.7 MB. Max. memory is 16.1 GB. * Witness Printer took 180.31 ms. Allocated memory is still 174.1 MB. Free memory was 69.7 MB in the beginning and 55.0 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 572]: 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 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6301.9ms, OverallIterations: 9, TraceHistogramMax: 5, EmptinessCheckTime: 63.6ms, AutomataDifference: 3324.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 218.9ms, InitialAbstractionConstructionTime: 14.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 560 SDtfs, 656 SDslu, 55 SDs, 0 SdLazy, 2155 SolverSat, 549 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2248.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 335 GetRequests, 322 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1683occurred in iteration=7, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 352.5ms AutomataMinimizationTime, 9 MinimizatonAttempts, 400 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 51 NumberOfFragments, 133 HoareAnnotationTreeSize, 3 FomulaSimplifications, 852 FormulaSimplificationTreeSizeReduction, 60.5ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 60 FormulaSimplificationTreeSizeReductionInter, 151.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 94.6ms SsaConstructionTime, 269.1ms SatisfiabilityAnalysisTime, 1472.3ms InterpolantComputationTime, 1220 NumberOfCodeBlocks, 1220 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1366 ConstructedInterpolants, 0 QuantifiedInterpolants, 2524 SizeOfPredicates, 0 NumberOfNonLiveVariables, 398 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 822/830 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: 616]: Loop Invariant Derived loop invariant: (((((((a19 == 1 && a25 == 0) || ((a25 == 1 && a11 == 0) && a28 <= 10)) || (a25 == 1 && a28 <= 9)) || ((10 <= a28 && a28 <= 10) && a19 == 1)) || (a11 == 0 && a25 == 0)) || ((a25 == 1 && 8 <= a17) && a28 <= 10)) || (a25 == 1 && a19 == 1)) || (a28 <= 10 && a25 == 0) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((a19 == 1 && a25 == 0) || ((a25 == 1 && a11 == 0) && a28 <= 10)) || (a25 == 1 && a28 <= 9)) || ((10 <= a28 && a28 <= 10) && a19 == 1)) || (a11 == 0 && a25 == 0)) || ((a25 == 1 && 8 <= a17) && a28 <= 10)) || (a25 == 1 && a19 == 1)) || (a28 <= 10 && a25 == 0) RESULT: Ultimate proved your program to be correct! [2021-10-24 09:49:45,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed4cb36d-f120-49f5-bb3c-a7c5ab24ff08/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...