./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label27.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff1bd47-b862-40b9-b3c8-c8078d3643e5/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff1bd47-b862-40b9-b3c8-c8078d3643e5/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff1bd47-b862-40b9-b3c8-c8078d3643e5/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff1bd47-b862-40b9-b3c8-c8078d3643e5/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label27.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff1bd47-b862-40b9-b3c8-c8078d3643e5/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff1bd47-b862-40b9-b3c8-c8078d3643e5/bin/utaipan-SDwSMHVbGG --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 f96201dbe56bea681ee5a8120406abadd3196465b4556f8bef57212ef135429f ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:54:11,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:54:11,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:54:11,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:54:11,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:54:11,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:54:11,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:54:11,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:54:11,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:54:11,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:54:11,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:54:11,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:54:11,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:54:11,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:54:11,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:54:11,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:54:11,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:54:11,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:54:11,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:54:11,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:54:11,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:54:11,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:54:11,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:54:11,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:54:11,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:54:11,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:54:11,250 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:54:11,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:54:11,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:54:11,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:54:11,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:54:11,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:54:11,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:54:11,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:54:11,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:54:11,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:54:11,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:54:11,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:54:11,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:54:11,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:54:11,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:54:11,267 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff1bd47-b862-40b9-b3c8-c8078d3643e5/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:54:11,312 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:54:11,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:54:11,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:54:11,314 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:54:11,314 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:54:11,315 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:54:11,315 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:54:11,315 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:54:11,315 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:54:11,316 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:54:11,316 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:54:11,316 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:54:11,316 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:54:11,317 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:54:11,317 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:54:11,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:54:11,322 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:54:11,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:54:11,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:54:11,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:54:11,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:54:11,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:54:11,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:54:11,324 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:54:11,324 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:54:11,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:54:11,324 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:54:11,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:54:11,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:54:11,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:54:11,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:54:11,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:54:11,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:54:11,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:54:11,329 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:54:11,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:54:11,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:54:11,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:54:11,331 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:54:11,331 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_9ff1bd47-b862-40b9-b3c8-c8078d3643e5/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff1bd47-b862-40b9-b3c8-c8078d3643e5/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f96201dbe56bea681ee5a8120406abadd3196465b4556f8bef57212ef135429f [2021-10-29 05:54:11,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:54:11,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:54:11,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:54:11,653 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:54:11,654 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:54:11,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff1bd47-b862-40b9-b3c8-c8078d3643e5/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/eca-rers2012/Problem02_label27.c [2021-10-29 05:54:11,730 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff1bd47-b862-40b9-b3c8-c8078d3643e5/bin/utaipan-SDwSMHVbGG/data/24b57218e/11942f9d8b994638a154cbd8d6df776d/FLAGe8f3a4a6a [2021-10-29 05:54:12,365 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:54:12,367 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff1bd47-b862-40b9-b3c8-c8078d3643e5/sv-benchmarks/c/eca-rers2012/Problem02_label27.c [2021-10-29 05:54:12,389 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff1bd47-b862-40b9-b3c8-c8078d3643e5/bin/utaipan-SDwSMHVbGG/data/24b57218e/11942f9d8b994638a154cbd8d6df776d/FLAGe8f3a4a6a [2021-10-29 05:54:12,603 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff1bd47-b862-40b9-b3c8-c8078d3643e5/bin/utaipan-SDwSMHVbGG/data/24b57218e/11942f9d8b994638a154cbd8d6df776d [2021-10-29 05:54:12,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:54:12,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:54:12,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:54:12,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:54:12,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:54:12,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:54:12" (1/1) ... [2021-10-29 05:54:12,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@461a07f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:12, skipping insertion in model container [2021-10-29 05:54:12,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:54:12" (1/1) ... [2021-10-29 05:54:12,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:54:12,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:54:13,055 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_9ff1bd47-b862-40b9-b3c8-c8078d3643e5/sv-benchmarks/c/eca-rers2012/Problem02_label27.c[16218,16231] [2021-10-29 05:54:13,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:54:13,143 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:54:13,293 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_9ff1bd47-b862-40b9-b3c8-c8078d3643e5/sv-benchmarks/c/eca-rers2012/Problem02_label27.c[16218,16231] [2021-10-29 05:54:13,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:54:13,359 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:54:13,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:13 WrapperNode [2021-10-29 05:54:13,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:54:13,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:54:13,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:54:13,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:54:13,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:13" (1/1) ... [2021-10-29 05:54:13,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:13" (1/1) ... [2021-10-29 05:54:13,464 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:54:13,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:54:13,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:54:13,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:54:13,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:13" (1/1) ... [2021-10-29 05:54:13,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:13" (1/1) ... [2021-10-29 05:54:13,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:13" (1/1) ... [2021-10-29 05:54:13,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:13" (1/1) ... [2021-10-29 05:54:13,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:13" (1/1) ... [2021-10-29 05:54:13,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:13" (1/1) ... [2021-10-29 05:54:13,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:13" (1/1) ... [2021-10-29 05:54:13,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:54:13,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:54:13,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:54:13,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:54:13,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:13" (1/1) ... [2021-10-29 05:54:13,579 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:54:13,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff1bd47-b862-40b9-b3c8-c8078d3643e5/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:54:13,613 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff1bd47-b862-40b9-b3c8-c8078d3643e5/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:54:13,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff1bd47-b862-40b9-b3c8-c8078d3643e5/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:54:13,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:54:13,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:54:13,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:54:13,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:54:15,928 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:54:15,929 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-29 05:54:15,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:54:15 BoogieIcfgContainer [2021-10-29 05:54:15,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:54:15,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:54:15,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:54:15,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:54:15,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:54:12" (1/3) ... [2021-10-29 05:54:15,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3cc157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:54:15, skipping insertion in model container [2021-10-29 05:54:15,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:54:13" (2/3) ... [2021-10-29 05:54:15,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3cc157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:54:15, skipping insertion in model container [2021-10-29 05:54:15,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:54:15" (3/3) ... [2021-10-29 05:54:15,943 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label27.c [2021-10-29 05:54:15,950 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:54:15,951 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:54:16,016 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:54:16,024 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 [2021-10-29 05:54:16,024 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:54:16,046 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) [2021-10-29 05:54:16,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-29 05:54:16,057 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:54:16,058 INFO L513 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] [2021-10-29 05:54:16,059 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:54:16,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:54:16,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1243321011, now seen corresponding path program 1 times [2021-10-29 05:54:16,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:54:16,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228464729] [2021-10-29 05:54:16,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:16,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:54:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:54:16,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:54:16,548 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:54:16,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228464729] [2021-10-29 05:54:16,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228464729] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:54:16,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:54:16,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:54:16,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023762883] [2021-10-29 05:54:16,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:54:16,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:54:16,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:54:16,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:54:16,588 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) [2021-10-29 05:54:17,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:54:17,160 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-29 05:54:17,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:54:17,162 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 [2021-10-29 05:54:17,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:54:17,188 INFO L225 Difference]: With dead ends: 251 [2021-10-29 05:54:17,189 INFO L226 Difference]: Without dead ends: 163 [2021-10-29 05:54:17,196 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:54:17,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-29 05:54:17,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-29 05:54:17,289 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) [2021-10-29 05:54:17,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2021-10-29 05:54:17,299 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2021-10-29 05:54:17,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:54:17,300 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2021-10-29 05:54:17,301 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) [2021-10-29 05:54:17,301 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2021-10-29 05:54:17,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-29 05:54:17,308 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:54:17,309 INFO L513 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] [2021-10-29 05:54:17,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:54:17,310 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:54:17,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:54:17,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1299316633, now seen corresponding path program 1 times [2021-10-29 05:54:17,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:54:17,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408764133] [2021-10-29 05:54:17,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:17,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:54:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:54:17,459 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:54:17,460 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:54:17,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408764133] [2021-10-29 05:54:17,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408764133] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:54:17,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:54:17,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:54:17,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836405067] [2021-10-29 05:54:17,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:54:17,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:54:17,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:54:17,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:54:17,470 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) [2021-10-29 05:54:17,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:54:17,981 INFO L93 Difference]: Finished difference Result 487 states and 937 transitions. [2021-10-29 05:54:17,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:54:17,982 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 [2021-10-29 05:54:17,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:54:17,985 INFO L225 Difference]: With dead ends: 487 [2021-10-29 05:54:17,986 INFO L226 Difference]: Without dead ends: 325 [2021-10-29 05:54:17,988 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:54:17,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-10-29 05:54:18,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2021-10-29 05:54:18,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.84472049689441) internal successors, (594), 322 states have internal predecessors, (594), 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) [2021-10-29 05:54:18,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 594 transitions. [2021-10-29 05:54:18,015 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 594 transitions. Word has length 91 [2021-10-29 05:54:18,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:54:18,016 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 594 transitions. [2021-10-29 05:54:18,016 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) [2021-10-29 05:54:18,017 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 594 transitions. [2021-10-29 05:54:18,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-29 05:54:18,021 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:54:18,021 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:54:18,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:54:18,022 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:54:18,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:54:18,023 INFO L85 PathProgramCache]: Analyzing trace with hash 588064082, now seen corresponding path program 1 times [2021-10-29 05:54:18,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:54:18,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921248265] [2021-10-29 05:54:18,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:18,030 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:54:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:54:18,162 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-29 05:54:18,162 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:54:18,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921248265] [2021-10-29 05:54:18,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921248265] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:54:18,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:54:18,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:54:18,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353035454] [2021-10-29 05:54:18,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:54:18,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:54:18,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:54:18,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:54:18,166 INFO L87 Difference]: Start difference. First operand 323 states and 594 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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) [2021-10-29 05:54:18,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:54:18,640 INFO L93 Difference]: Finished difference Result 885 states and 1638 transitions. [2021-10-29 05:54:18,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:54:18,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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 95 [2021-10-29 05:54:18,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:54:18,644 INFO L225 Difference]: With dead ends: 885 [2021-10-29 05:54:18,645 INFO L226 Difference]: Without dead ends: 563 [2021-10-29 05:54:18,647 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:54:18,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-10-29 05:54:18,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2021-10-29 05:54:18,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.616182572614108) internal successors, (779), 482 states have internal predecessors, (779), 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) [2021-10-29 05:54:18,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 779 transitions. [2021-10-29 05:54:18,669 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 779 transitions. Word has length 95 [2021-10-29 05:54:18,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:54:18,670 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 779 transitions. [2021-10-29 05:54:18,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 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) [2021-10-29 05:54:18,670 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 779 transitions. [2021-10-29 05:54:18,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-29 05:54:18,674 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:54:18,675 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:54:18,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 05:54:18,675 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:54:18,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:54:18,676 INFO L85 PathProgramCache]: Analyzing trace with hash 341407469, now seen corresponding path program 1 times [2021-10-29 05:54:18,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:54:18,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352965676] [2021-10-29 05:54:18,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:18,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:54:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:54:18,769 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-29 05:54:18,772 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:54:18,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352965676] [2021-10-29 05:54:18,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352965676] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:54:18,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:54:18,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:54:18,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136910700] [2021-10-29 05:54:18,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:54:18,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:54:18,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:54:18,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:54:18,778 INFO L87 Difference]: Start difference. First operand 483 states and 779 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2021-10-29 05:54:19,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:54:19,286 INFO L93 Difference]: Finished difference Result 1205 states and 2008 transitions. [2021-10-29 05:54:19,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:54:19,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 100 [2021-10-29 05:54:19,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:54:19,293 INFO L225 Difference]: With dead ends: 1205 [2021-10-29 05:54:19,293 INFO L226 Difference]: Without dead ends: 723 [2021-10-29 05:54:19,295 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:54:19,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-10-29 05:54:19,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 643. [2021-10-29 05:54:19,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 1.5093457943925233) internal successors, (969), 642 states have internal predecessors, (969), 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) [2021-10-29 05:54:19,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 969 transitions. [2021-10-29 05:54:19,320 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 969 transitions. Word has length 100 [2021-10-29 05:54:19,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:54:19,321 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 969 transitions. [2021-10-29 05:54:19,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2021-10-29 05:54:19,322 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 969 transitions. [2021-10-29 05:54:19,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-29 05:54:19,324 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:54:19,325 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:54:19,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 05:54:19,326 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:54:19,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:54:19,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1329930723, now seen corresponding path program 1 times [2021-10-29 05:54:19,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:54:19,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172130833] [2021-10-29 05:54:19,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:19,328 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:54:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:54:19,405 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-29 05:54:19,405 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:54:19,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172130833] [2021-10-29 05:54:19,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172130833] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:54:19,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:54:19,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:54:19,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648412082] [2021-10-29 05:54:19,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:54:19,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:54:19,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:54:19,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:54:19,409 INFO L87 Difference]: Start difference. First operand 643 states and 969 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) [2021-10-29 05:54:19,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:54:19,874 INFO L93 Difference]: Finished difference Result 1765 states and 2719 transitions. [2021-10-29 05:54:19,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:54:19,875 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 101 [2021-10-29 05:54:19,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:54:19,883 INFO L225 Difference]: With dead ends: 1765 [2021-10-29 05:54:19,883 INFO L226 Difference]: Without dead ends: 1123 [2021-10-29 05:54:19,899 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:54:19,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2021-10-29 05:54:19,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2021-10-29 05:54:19,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.4536541889483066) internal successors, (1631), 1122 states have internal predecessors, (1631), 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) [2021-10-29 05:54:19,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1631 transitions. [2021-10-29 05:54:19,967 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1631 transitions. Word has length 101 [2021-10-29 05:54:19,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:54:19,970 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1631 transitions. [2021-10-29 05:54:19,971 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) [2021-10-29 05:54:19,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1631 transitions. [2021-10-29 05:54:19,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-29 05:54:19,975 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:54:19,975 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:54:19,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 05:54:19,976 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:54:19,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:54:19,977 INFO L85 PathProgramCache]: Analyzing trace with hash -47602589, now seen corresponding path program 1 times [2021-10-29 05:54:19,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:54:19,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982160790] [2021-10-29 05:54:19,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:19,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:54:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:54:20,021 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-29 05:54:20,021 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:54:20,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982160790] [2021-10-29 05:54:20,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982160790] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:54:20,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:54:20,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:54:20,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750975537] [2021-10-29 05:54:20,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:54:20,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:54:20,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:54:20,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:54:20,025 INFO L87 Difference]: Start difference. First operand 1123 states and 1631 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2021-10-29 05:54:20,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:54:20,517 INFO L93 Difference]: Finished difference Result 2645 states and 3802 transitions. [2021-10-29 05:54:20,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:54:20,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 104 [2021-10-29 05:54:20,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:54:20,529 INFO L225 Difference]: With dead ends: 2645 [2021-10-29 05:54:20,529 INFO L226 Difference]: Without dead ends: 1523 [2021-10-29 05:54:20,531 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:54:20,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-10-29 05:54:20,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1523. [2021-10-29 05:54:20,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.3580814717477003) internal successors, (2067), 1522 states have internal predecessors, (2067), 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) [2021-10-29 05:54:20,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2067 transitions. [2021-10-29 05:54:20,584 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2067 transitions. Word has length 104 [2021-10-29 05:54:20,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:54:20,584 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 2067 transitions. [2021-10-29 05:54:20,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2021-10-29 05:54:20,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2067 transitions. [2021-10-29 05:54:20,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-29 05:54:20,590 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:54:20,590 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-29 05:54:20,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-29 05:54:20,591 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:54:20,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:54:20,592 INFO L85 PathProgramCache]: Analyzing trace with hash -2096319596, now seen corresponding path program 1 times [2021-10-29 05:54:20,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:54:20,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336493194] [2021-10-29 05:54:20,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:20,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:54:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:54:20,652 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-29 05:54:20,652 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:54:20,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336493194] [2021-10-29 05:54:20,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336493194] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:54:20,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:54:20,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:54:20,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559231241] [2021-10-29 05:54:20,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:54:20,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:54:20,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:54:20,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:54:20,656 INFO L87 Difference]: Start difference. First operand 1523 states and 2067 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) [2021-10-29 05:54:21,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:54:21,123 INFO L93 Difference]: Finished difference Result 3045 states and 4133 transitions. [2021-10-29 05:54:21,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:54:21,124 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 120 [2021-10-29 05:54:21,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:54:21,136 INFO L225 Difference]: With dead ends: 3045 [2021-10-29 05:54:21,137 INFO L226 Difference]: Without dead ends: 1523 [2021-10-29 05:54:21,139 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:54:21,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-10-29 05:54:21,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1203. [2021-10-29 05:54:21,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.221297836938436) internal successors, (1468), 1202 states have internal predecessors, (1468), 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) [2021-10-29 05:54:21,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1468 transitions. [2021-10-29 05:54:21,189 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1468 transitions. Word has length 120 [2021-10-29 05:54:21,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:54:21,190 INFO L470 AbstractCegarLoop]: Abstraction has 1203 states and 1468 transitions. [2021-10-29 05:54:21,190 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) [2021-10-29 05:54:21,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1468 transitions. [2021-10-29 05:54:21,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-10-29 05:54:21,195 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:54:21,195 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2021-10-29 05:54:21,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-29 05:54:21,196 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:54:21,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:54:21,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1786410486, now seen corresponding path program 1 times [2021-10-29 05:54:21,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:54:21,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621415715] [2021-10-29 05:54:21,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:21,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:54:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:54:21,324 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 51 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-29 05:54:21,325 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:54:21,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621415715] [2021-10-29 05:54:21,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621415715] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:54:21,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832171985] [2021-10-29 05:54:21,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:54:21,326 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:54:21,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff1bd47-b862-40b9-b3c8-c8078d3643e5/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:54:21,334 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff1bd47-b862-40b9-b3c8-c8078d3643e5/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:54:21,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff1bd47-b862-40b9-b3c8-c8078d3643e5/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 05:54:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:54:21,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:54:21,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:54:21,998 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-29 05:54:21,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:54:22,542 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-29 05:54:22,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832171985] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:54:22,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-29 05:54:22,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [4] total 5 [2021-10-29 05:54:22,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598974969] [2021-10-29 05:54:22,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:54:22,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:54:22,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:54:22,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:54:22,547 INFO L87 Difference]: Start difference. First operand 1203 states and 1468 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 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) [2021-10-29 05:54:22,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:54:22,832 INFO L93 Difference]: Finished difference Result 2243 states and 2753 transitions. [2021-10-29 05:54:22,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:54:22,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 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 124 [2021-10-29 05:54:22,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:54:22,835 INFO L225 Difference]: With dead ends: 2243 [2021-10-29 05:54:22,835 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:54:22,838 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 245 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:54:22,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:54:22,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:54:22,839 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) [2021-10-29 05:54:22,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:54:22,839 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 124 [2021-10-29 05:54:22,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:54:22,840 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:54:22,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 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) [2021-10-29 05:54:22,841 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:54:22,841 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:54:22,844 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:54:22,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff1bd47-b862-40b9-b3c8-c8078d3643e5/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:54:23,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff1bd47-b862-40b9-b3c8-c8078d3643e5/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:54:23,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 05:54:23,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:54:23,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:54:23,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:54:23,220 INFO L857 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-29 05:54:23,220 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-29 05:54:23,221 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-29 05:54:23,222 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-29 05:54:23,222 INFO L857 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-29 05:54:23,222 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-29 05:54:23,229 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-29 05:54:23,229 INFO L857 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-29 05:54:23,230 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-29 05:54:23,231 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-29 05:54:23,231 INFO L857 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-29 05:54:23,233 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-29 05:54:23,235 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-29 05:54:23,235 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-29 05:54:23,235 INFO L857 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-29 05:54:23,235 INFO L857 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-29 05:54:23,235 INFO L857 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-29 05:54:23,236 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-29 05:54:23,236 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-29 05:54:23,236 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-29 05:54:23,236 INFO L857 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-29 05:54:23,236 INFO L857 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-29 05:54:23,236 INFO L857 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-29 05:54:23,236 INFO L857 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-29 05:54:23,237 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-29 05:54:23,237 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-29 05:54:23,237 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 05:54:23,237 INFO L857 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-29 05:54:23,237 INFO L857 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-29 05:54:23,237 INFO L857 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-29 05:54:23,238 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-29 05:54:23,238 INFO L857 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-29 05:54:23,238 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-29 05:54:23,238 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-29 05:54:23,238 INFO L857 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-29 05:54:23,238 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-29 05:54:23,239 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 467) no Hoare annotation was computed. [2021-10-29 05:54:23,239 INFO L857 garLoopResultBuilder]: For program point L463-1(lines 39 608) no Hoare annotation was computed. [2021-10-29 05:54:23,239 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-29 05:54:23,239 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-29 05:54:23,239 INFO L857 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-29 05:54:23,239 INFO L857 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-29 05:54:23,240 INFO L857 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-29 05:54:23,240 INFO L857 garLoopResultBuilder]: For program point L466-1(lines 39 608) no Hoare annotation was computed. [2021-10-29 05:54:23,240 INFO L857 garLoopResultBuilder]: For program point L467(line 467) no Hoare annotation was computed. [2021-10-29 05:54:23,240 INFO L857 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-29 05:54:23,240 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-29 05:54:23,240 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-29 05:54:23,240 INFO L857 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-29 05:54:23,241 INFO L857 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-29 05:54:23,241 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-29 05:54:23,241 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-29 05:54:23,241 INFO L857 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-29 05:54:23,241 INFO L857 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-29 05:54:23,241 INFO L857 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-29 05:54:23,241 INFO L857 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-29 05:54:23,242 INFO L853 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8)) (.cse1 (= ~a19~0 1))) (or (and (<= 8 ~a17~0) .cse0 .cse1) (and .cse0 (<= ~a28~0 10)) (and .cse0 (not (= ~a25~0 1)) .cse1))) [2021-10-29 05:54:23,242 INFO L857 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-29 05:54:23,242 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-29 05:54:23,242 INFO L860 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-29 05:54:23,242 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-29 05:54:23,243 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-29 05:54:23,243 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-29 05:54:23,243 INFO L857 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-29 05:54:23,243 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-29 05:54:23,243 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 05:54:23,243 INFO L857 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-29 05:54:23,244 INFO L857 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-29 05:54:23,244 INFO L853 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8)) (.cse1 (= ~a19~0 1))) (or (and (<= 8 ~a17~0) .cse0 .cse1) (and .cse0 (<= ~a28~0 10)) (and .cse0 (not (= ~a25~0 1)) .cse1))) [2021-10-29 05:54:23,244 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-29 05:54:23,244 INFO L857 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-29 05:54:23,244 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-29 05:54:23,244 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-29 05:54:23,245 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-29 05:54:23,245 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-29 05:54:23,245 INFO L857 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-29 05:54:23,245 INFO L857 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-29 05:54:23,245 INFO L857 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-29 05:54:23,245 INFO L857 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-29 05:54:23,245 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-29 05:54:23,246 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-29 05:54:23,246 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-29 05:54:23,246 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-29 05:54:23,246 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-29 05:54:23,246 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-29 05:54:23,250 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:54:23,252 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:54:23,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:54:23 BoogieIcfgContainer [2021-10-29 05:54:23,282 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:54:23,283 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:54:23,284 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:54:23,284 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:54:23,285 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:54:15" (3/4) ... [2021-10-29 05:54:23,290 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:54:23,330 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2021-10-29 05:54:23,333 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-29 05:54:23,335 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-29 05:54:23,337 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-29 05:54:23,545 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff1bd47-b862-40b9-b3c8-c8078d3643e5/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:54:23,546 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:54:23,548 INFO L168 Benchmark]: Toolchain (without parser) took 10935.70 ms. Allocated memory was 83.9 MB in the beginning and 176.2 MB in the end (delta: 92.3 MB). Free memory was 53.3 MB in the beginning and 78.3 MB in the end (delta: -25.0 MB). Peak memory consumption was 66.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:54:23,549 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory is still 38.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:54:23,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 744.83 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 53.1 MB in the beginning and 67.9 MB in the end (delta: -14.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:54:23,551 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.21 ms. Allocated memory is still 107.0 MB. Free memory was 67.9 MB in the beginning and 62.4 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:54:23,551 INFO L168 Benchmark]: Boogie Preprocessor took 98.35 ms. Allocated memory is still 107.0 MB. Free memory was 62.4 MB in the beginning and 58.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:54:23,552 INFO L168 Benchmark]: RCFGBuilder took 2368.58 ms. Allocated memory is still 107.0 MB. Free memory was 58.2 MB in the beginning and 53.8 MB in the end (delta: 4.3 MB). Peak memory consumption was 25.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:54:23,552 INFO L168 Benchmark]: TraceAbstraction took 7346.65 ms. Allocated memory was 107.0 MB in the beginning and 176.2 MB in the end (delta: 69.2 MB). Free memory was 53.2 MB in the beginning and 94.0 MB in the end (delta: -40.8 MB). Peak memory consumption was 28.0 MB. Max. memory is 16.1 GB. [2021-10-29 05:54:23,553 INFO L168 Benchmark]: Witness Printer took 263.27 ms. Allocated memory is still 176.2 MB. Free memory was 94.0 MB in the beginning and 78.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:54:23,556 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory is still 38.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 744.83 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 53.1 MB in the beginning and 67.9 MB in the end (delta: -14.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 104.21 ms. Allocated memory is still 107.0 MB. Free memory was 67.9 MB in the beginning and 62.4 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 98.35 ms. Allocated memory is still 107.0 MB. Free memory was 62.4 MB in the beginning and 58.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2368.58 ms. Allocated memory is still 107.0 MB. Free memory was 58.2 MB in the beginning and 53.8 MB in the end (delta: 4.3 MB). Peak memory consumption was 25.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7346.65 ms. Allocated memory was 107.0 MB in the beginning and 176.2 MB in the end (delta: 69.2 MB). Free memory was 53.2 MB in the beginning and 94.0 MB in the end (delta: -40.8 MB). Peak memory consumption was 28.0 MB. Max. memory is 16.1 GB. * Witness Printer took 263.27 ms. Allocated memory is still 176.2 MB. Free memory was 94.0 MB in the beginning and 78.3 MB in the end (delta: 15.7 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 467]: 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: 7.2s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 451 SDtfs, 703 SDslu, 28 SDs, 0 SdLazy, 1836 SolverSat, 453 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 267 GetRequests, 255 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1523occurred in iteration=6, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 482 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 31 NumberOfFragments, 59 HoareAnnotationTreeSize, 3 FomulaSimplifications, 524 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 939 NumberOfCodeBlocks, 939 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1053 ConstructedInterpolants, 0 QuantifiedInterpolants, 1977 SizeOfPredicates, 0 NumberOfNonLiveVariables, 307 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 384/392 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: (((8 <= a17 && a17 <= 8) && a19 == 1) || (a17 <= 8 && a28 <= 10)) || ((a17 <= 8 && !(a25 == 1)) && a19 == 1) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((8 <= a17 && a17 <= 8) && a19 == 1) || (a17 <= 8 && a28 <= 10)) || ((a17 <= 8 && !(a25 == 1)) && a19 == 1) RESULT: Ultimate proved your program to be correct! [2021-10-29 05:54:23,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ff1bd47-b862-40b9-b3c8-c8078d3643e5/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...