./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label05.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_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/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_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/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_ba813677-14f5-43b2-bdfa-0eded5c5fef2/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 5958333028b8f64162c92b3e987d78deaf3d77dc73071d1f6edce3e1a07212a4 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 05:12:21,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:12:21,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:12:21,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:12:21,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:12:21,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:12:21,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:12:21,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:12:21,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:12:21,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:12:21,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:12:21,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:12:21,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:12:21,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:12:21,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:12:21,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:12:21,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:12:21,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:12:21,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:12:21,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:12:21,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:12:21,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:12:21,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:12:21,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:12:21,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:12:21,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:12:21,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:12:21,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:12:21,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:12:21,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:12:21,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:12:21,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:12:21,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:12:21,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:12:21,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:12:21,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:12:21,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:12:21,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:12:21,318 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:12:21,319 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:12:21,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:12:21,320 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:12:21,358 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:12:21,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:12:21,360 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:12:21,360 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:12:21,361 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:12:21,361 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:12:21,361 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:12:21,361 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:12:21,365 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:12:21,365 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:12:21,365 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:12:21,366 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:12:21,367 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:12:21,367 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:12:21,367 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:12:21,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:12:21,368 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:12:21,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:12:21,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:12:21,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:12:21,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:12:21,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:12:21,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:12:21,370 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:12:21,370 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:12:21,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:12:21,370 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:12:21,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:12:21,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:12:21,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:12:21,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:12:21,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:12:21,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:12:21,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:12:21,374 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:12:21,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:12:21,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:12:21,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:12:21,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:12:21,375 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_ba813677-14f5-43b2-bdfa-0eded5c5fef2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5958333028b8f64162c92b3e987d78deaf3d77dc73071d1f6edce3e1a07212a4 [2021-10-29 05:12:21,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:12:21,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:12:21,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:12:21,682 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:12:21,683 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:12:21,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/eca-rers2012/Problem01_label05.c [2021-10-29 05:12:21,757 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/data/5e1aa8043/24d3dee6d9af4dd6b34b22d9acb812b2/FLAGc3c3bd2c3 [2021-10-29 05:12:22,343 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:12:22,344 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/sv-benchmarks/c/eca-rers2012/Problem01_label05.c [2021-10-29 05:12:22,373 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/data/5e1aa8043/24d3dee6d9af4dd6b34b22d9acb812b2/FLAGc3c3bd2c3 [2021-10-29 05:12:22,596 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/data/5e1aa8043/24d3dee6d9af4dd6b34b22d9acb812b2 [2021-10-29 05:12:22,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:12:22,600 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:12:22,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:12:22,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:12:22,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:12:22,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:12:22" (1/1) ... [2021-10-29 05:12:22,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18dccd79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:22, skipping insertion in model container [2021-10-29 05:12:22,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:12:22" (1/1) ... [2021-10-29 05:12:22,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:12:22,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:12:23,027 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_ba813677-14f5-43b2-bdfa-0eded5c5fef2/sv-benchmarks/c/eca-rers2012/Problem01_label05.c[17240,17253] [2021-10-29 05:12:23,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:12:23,105 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:12:23,249 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_ba813677-14f5-43b2-bdfa-0eded5c5fef2/sv-benchmarks/c/eca-rers2012/Problem01_label05.c[17240,17253] [2021-10-29 05:12:23,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:12:23,286 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:12:23,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:23 WrapperNode [2021-10-29 05:12:23,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:12:23,288 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:12:23,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:12:23,289 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:12:23,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:23" (1/1) ... [2021-10-29 05:12:23,324 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:23" (1/1) ... [2021-10-29 05:12:23,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:12:23,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:12:23,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:12:23,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:12:23,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:23" (1/1) ... [2021-10-29 05:12:23,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:23" (1/1) ... [2021-10-29 05:12:23,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:23" (1/1) ... [2021-10-29 05:12:23,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:23" (1/1) ... [2021-10-29 05:12:23,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:23" (1/1) ... [2021-10-29 05:12:23,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:23" (1/1) ... [2021-10-29 05:12:23,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:23" (1/1) ... [2021-10-29 05:12:23,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:12:23,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:12:23,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:12:23,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:12:23,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:23" (1/1) ... [2021-10-29 05:12:23,533 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:12:23,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:12:23,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:12:23,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:12:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:12:23,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:12:23,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:12:23,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:12:25,510 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:12:25,510 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-29 05:12:25,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:12:25 BoogieIcfgContainer [2021-10-29 05:12:25,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:12:25,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:12:25,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:12:25,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:12:25,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:12:22" (1/3) ... [2021-10-29 05:12:25,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4eb6c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:12:25, skipping insertion in model container [2021-10-29 05:12:25,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:12:23" (2/3) ... [2021-10-29 05:12:25,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4eb6c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:12:25, skipping insertion in model container [2021-10-29 05:12:25,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:12:25" (3/3) ... [2021-10-29 05:12:25,521 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label05.c [2021-10-29 05:12:25,526 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:12:25,526 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:12:25,574 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:12:25,580 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 05:12:25,580 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:12:25,596 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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 05:12:25,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-29 05:12:25,604 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:12:25,605 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] [2021-10-29 05:12:25,605 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:12:25,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:12:25,611 INFO L85 PathProgramCache]: Analyzing trace with hash -104663553, now seen corresponding path program 1 times [2021-10-29 05:12:25,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:12:25,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143422405] [2021-10-29 05:12:25,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:12:25,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:12:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:12:25,985 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 05:12:25,985 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:12:25,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143422405] [2021-10-29 05:12:25,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143422405] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:12:25,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:12:25,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:12:25,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129980928] [2021-10-29 05:12:25,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:12:25,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:12:26,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:12:26,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:12:26,010 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 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 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 05:12:26,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:12:26,365 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-29 05:12:26,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:12:26,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 71 [2021-10-29 05:12:26,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:12:26,378 INFO L225 Difference]: With dead ends: 224 [2021-10-29 05:12:26,378 INFO L226 Difference]: Without dead ends: 145 [2021-10-29 05:12:26,381 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 05:12:26,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-29 05:12:26,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-29 05:12:26,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7986111111111112) internal successors, (259), 144 states have internal predecessors, (259), 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 05:12:26,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2021-10-29 05:12:26,427 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2021-10-29 05:12:26,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:12:26,428 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2021-10-29 05:12:26,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 05:12:26,429 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2021-10-29 05:12:26,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-29 05:12:26,432 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:12:26,432 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-10-29 05:12:26,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:12:26,433 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:12:26,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:12:26,434 INFO L85 PathProgramCache]: Analyzing trace with hash -601817134, now seen corresponding path program 1 times [2021-10-29 05:12:26,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:12:26,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738235163] [2021-10-29 05:12:26,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:12:26,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:12:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:12:26,492 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:12:26,492 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:12:26,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738235163] [2021-10-29 05:12:26,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738235163] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:12:26,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:12:26,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:12:26,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605347409] [2021-10-29 05:12:26,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:12:26,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:12:26,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:12:26,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:12:26,496 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 05:12:26,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:12:26,880 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2021-10-29 05:12:26,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:12:26,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 77 [2021-10-29 05:12:26,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:12:26,890 INFO L225 Difference]: With dead ends: 431 [2021-10-29 05:12:26,890 INFO L226 Difference]: Without dead ends: 287 [2021-10-29 05:12:26,892 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 05:12:26,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-29 05:12:26,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-29 05:12:26,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.632867132867133) internal successors, (467), 286 states have internal predecessors, (467), 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 05:12:26,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2021-10-29 05:12:26,923 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 77 [2021-10-29 05:12:26,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:12:26,924 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2021-10-29 05:12:26,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 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 05:12:26,926 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2021-10-29 05:12:26,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-29 05:12:26,936 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:12:26,937 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-10-29 05:12:26,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:12:26,937 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:12:26,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:12:26,939 INFO L85 PathProgramCache]: Analyzing trace with hash -981084792, now seen corresponding path program 1 times [2021-10-29 05:12:26,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:12:26,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937643610] [2021-10-29 05:12:26,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:12:26,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:12:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:12:27,067 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:12:27,068 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:12:27,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937643610] [2021-10-29 05:12:27,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937643610] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:12:27,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:12:27,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:12:27,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512203165] [2021-10-29 05:12:27,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:12:27,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:12:27,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:12:27,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:12:27,081 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 05:12:27,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:12:27,402 INFO L93 Difference]: Finished difference Result 857 states and 1398 transitions. [2021-10-29 05:12:27,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:12:27,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 82 [2021-10-29 05:12:27,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:12:27,407 INFO L225 Difference]: With dead ends: 857 [2021-10-29 05:12:27,408 INFO L226 Difference]: Without dead ends: 571 [2021-10-29 05:12:27,412 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 05:12:27,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-10-29 05:12:27,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 500. [2021-10-29 05:12:27,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.4729458917835672) internal successors, (735), 499 states have internal predecessors, (735), 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 05:12:27,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 735 transitions. [2021-10-29 05:12:27,456 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 735 transitions. Word has length 82 [2021-10-29 05:12:27,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:12:27,458 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 735 transitions. [2021-10-29 05:12:27,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 05:12:27,459 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 735 transitions. [2021-10-29 05:12:27,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-10-29 05:12:27,462 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:12:27,462 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2021-10-29 05:12:27,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 05:12:27,463 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:12:27,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:12:27,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1190367402, now seen corresponding path program 1 times [2021-10-29 05:12:27,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:12:27,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028750873] [2021-10-29 05:12:27,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:12:27,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:12:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:12:27,567 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:12:27,568 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:12:27,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028750873] [2021-10-29 05:12:27,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028750873] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:12:27,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:12:27,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:12:27,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954431838] [2021-10-29 05:12:27,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:12:27,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:12:27,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:12:27,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:12:27,571 INFO L87 Difference]: Start difference. First operand 500 states and 735 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 05:12:27,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:12:27,956 INFO L93 Difference]: Finished difference Result 1425 states and 2106 transitions. [2021-10-29 05:12:27,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:12:27,956 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 94 [2021-10-29 05:12:27,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:12:27,962 INFO L225 Difference]: With dead ends: 1425 [2021-10-29 05:12:27,962 INFO L226 Difference]: Without dead ends: 926 [2021-10-29 05:12:27,963 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 05:12:27,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-29 05:12:28,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 855. [2021-10-29 05:12:28,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.4180327868852458) internal successors, (1211), 854 states have internal predecessors, (1211), 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 05:12:28,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1211 transitions. [2021-10-29 05:12:28,014 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1211 transitions. Word has length 94 [2021-10-29 05:12:28,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:12:28,014 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1211 transitions. [2021-10-29 05:12:28,014 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 05:12:28,015 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1211 transitions. [2021-10-29 05:12:28,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-29 05:12:28,017 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:12:28,018 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:12:28,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 05:12:28,018 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:12:28,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:12:28,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1157701472, now seen corresponding path program 1 times [2021-10-29 05:12:28,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:12:28,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471013391] [2021-10-29 05:12:28,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:12:28,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:12:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:12:28,109 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-29 05:12:28,110 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:12:28,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471013391] [2021-10-29 05:12:28,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471013391] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:12:28,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:12:28,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:12:28,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855637389] [2021-10-29 05:12:28,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:12:28,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:12:28,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:12:28,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:12:28,115 INFO L87 Difference]: Start difference. First operand 855 states and 1211 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 05:12:28,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:12:28,508 INFO L93 Difference]: Finished difference Result 2277 states and 3231 transitions. [2021-10-29 05:12:28,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:12:28,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-10-29 05:12:28,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:12:28,516 INFO L225 Difference]: With dead ends: 2277 [2021-10-29 05:12:28,516 INFO L226 Difference]: Without dead ends: 1281 [2021-10-29 05:12:28,518 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 05:12:28,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-10-29 05:12:28,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1210. [2021-10-29 05:12:28,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1209 states have (on average 1.2406947890818858) internal successors, (1500), 1209 states have internal predecessors, (1500), 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 05:12:28,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1500 transitions. [2021-10-29 05:12:28,554 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1500 transitions. Word has length 98 [2021-10-29 05:12:28,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:12:28,554 INFO L470 AbstractCegarLoop]: Abstraction has 1210 states and 1500 transitions. [2021-10-29 05:12:28,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 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 05:12:28,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1500 transitions. [2021-10-29 05:12:28,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-29 05:12:28,558 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:12:28,558 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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 05:12:28,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 05:12:28,559 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:12:28,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:12:28,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1373780852, now seen corresponding path program 1 times [2021-10-29 05:12:28,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:12:28,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146026848] [2021-10-29 05:12:28,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:12:28,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:12:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:12:28,614 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-29 05:12:28,614 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:12:28,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146026848] [2021-10-29 05:12:28,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146026848] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:12:28,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:12:28,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:12:28,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978459820] [2021-10-29 05:12:28,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:12:28,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:12:28,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:12:28,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:12:28,617 INFO L87 Difference]: Start difference. First operand 1210 states and 1500 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:12:28,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:12:28,917 INFO L93 Difference]: Finished difference Result 2845 states and 3580 transitions. [2021-10-29 05:12:28,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:12:28,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-10-29 05:12:28,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:12:28,927 INFO L225 Difference]: With dead ends: 2845 [2021-10-29 05:12:28,927 INFO L226 Difference]: Without dead ends: 1707 [2021-10-29 05:12:28,929 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 05:12:28,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-10-29 05:12:28,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1494. [2021-10-29 05:12:28,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1493 states have (on average 1.2572002679169458) internal successors, (1877), 1493 states have internal predecessors, (1877), 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 05:12:28,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1877 transitions. [2021-10-29 05:12:28,972 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1877 transitions. Word has length 111 [2021-10-29 05:12:28,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:12:28,972 INFO L470 AbstractCegarLoop]: Abstraction has 1494 states and 1877 transitions. [2021-10-29 05:12:28,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:12:28,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1877 transitions. [2021-10-29 05:12:28,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-29 05:12:28,976 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:12:28,976 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:12:28,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-29 05:12:28,977 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:12:28,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:12:28,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1204168637, now seen corresponding path program 1 times [2021-10-29 05:12:28,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:12:28,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487037288] [2021-10-29 05:12:28,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:12:28,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:12:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:12:29,021 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-29 05:12:29,021 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:12:29,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487037288] [2021-10-29 05:12:29,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487037288] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:12:29,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:12:29,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:12:29,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090044136] [2021-10-29 05:12:29,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:12:29,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:12:29,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:12:29,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:12:29,024 INFO L87 Difference]: Start difference. First operand 1494 states and 1877 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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 05:12:29,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:12:29,273 INFO L93 Difference]: Finished difference Result 3129 states and 3931 transitions. [2021-10-29 05:12:29,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:12:29,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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 113 [2021-10-29 05:12:29,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:12:29,282 INFO L225 Difference]: With dead ends: 3129 [2021-10-29 05:12:29,282 INFO L226 Difference]: Without dead ends: 1636 [2021-10-29 05:12:29,284 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 05:12:29,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-10-29 05:12:29,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1636. [2021-10-29 05:12:29,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1635 states have (on average 1.2428134556574923) internal successors, (2032), 1635 states have internal predecessors, (2032), 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 05:12:29,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2032 transitions. [2021-10-29 05:12:29,326 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2032 transitions. Word has length 113 [2021-10-29 05:12:29,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:12:29,327 INFO L470 AbstractCegarLoop]: Abstraction has 1636 states and 2032 transitions. [2021-10-29 05:12:29,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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 05:12:29,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2032 transitions. [2021-10-29 05:12:29,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-29 05:12:29,330 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:12:29,331 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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 05:12:29,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-29 05:12:29,331 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:12:29,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:12:29,332 INFO L85 PathProgramCache]: Analyzing trace with hash 13508603, now seen corresponding path program 1 times [2021-10-29 05:12:29,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:12:29,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146166729] [2021-10-29 05:12:29,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:12:29,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:12:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:12:29,388 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 69 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-29 05:12:29,388 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:12:29,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146166729] [2021-10-29 05:12:29,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146166729] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:12:29,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218239113] [2021-10-29 05:12:29,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:12:29,389 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:12:29,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:12:29,391 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:12:29,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 05:12:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:12:29,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:12:29,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:12:29,964 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-10-29 05:12:29,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:12:30,324 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-10-29 05:12:30,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218239113] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:12:30,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-29 05:12:30,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-29 05:12:30,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010680374] [2021-10-29 05:12:30,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:12:30,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:12:30,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:12:30,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:12:30,327 INFO L87 Difference]: Start difference. First operand 1636 states and 2032 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 05:12:30,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:12:30,605 INFO L93 Difference]: Finished difference Result 3200 states and 3989 transitions. [2021-10-29 05:12:30,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:12:30,605 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 117 [2021-10-29 05:12:30,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:12:30,617 INFO L225 Difference]: With dead ends: 3200 [2021-10-29 05:12:30,617 INFO L226 Difference]: Without dead ends: 1636 [2021-10-29 05:12:30,621 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 232 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:12:30,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-10-29 05:12:30,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1636. [2021-10-29 05:12:30,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1635 states have (on average 1.2269113149847095) internal successors, (2006), 1635 states have internal predecessors, (2006), 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 05:12:30,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2006 transitions. [2021-10-29 05:12:30,665 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2006 transitions. Word has length 117 [2021-10-29 05:12:30,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:12:30,667 INFO L470 AbstractCegarLoop]: Abstraction has 1636 states and 2006 transitions. [2021-10-29 05:12:30,667 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 05:12:30,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2006 transitions. [2021-10-29 05:12:30,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-29 05:12:30,671 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:12:30,671 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:12:30,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:12:30,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:12:30,886 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:12:30,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:12:30,887 INFO L85 PathProgramCache]: Analyzing trace with hash 650532299, now seen corresponding path program 1 times [2021-10-29 05:12:30,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:12:30,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51248584] [2021-10-29 05:12:30,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:12:30,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:12:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:12:30,957 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 69 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-29 05:12:30,958 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:12:30,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51248584] [2021-10-29 05:12:30,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51248584] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:12:30,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190393896] [2021-10-29 05:12:30,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:12:30,959 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:12:30,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:12:30,966 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:12:30,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 05:12:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:12:31,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:12:31,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:12:31,537 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-10-29 05:12:31,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:12:31,859 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-10-29 05:12:31,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190393896] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:12:31,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-29 05:12:31,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-29 05:12:31,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471204640] [2021-10-29 05:12:31,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:12:31,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:12:31,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:12:31,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:12:31,862 INFO L87 Difference]: Start difference. First operand 1636 states and 2006 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 05:12:32,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:12:32,139 INFO L93 Difference]: Finished difference Result 3271 states and 4025 transitions. [2021-10-29 05:12:32,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:12:32,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 122 [2021-10-29 05:12:32,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:12:32,150 INFO L225 Difference]: With dead ends: 3271 [2021-10-29 05:12:32,150 INFO L226 Difference]: Without dead ends: 1707 [2021-10-29 05:12:32,152 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 242 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:12:32,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-10-29 05:12:32,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1423. [2021-10-29 05:12:32,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 1422 states have (on average 1.1821378340365682) internal successors, (1681), 1422 states have internal predecessors, (1681), 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 05:12:32,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1681 transitions. [2021-10-29 05:12:32,197 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1681 transitions. Word has length 122 [2021-10-29 05:12:32,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:12:32,198 INFO L470 AbstractCegarLoop]: Abstraction has 1423 states and 1681 transitions. [2021-10-29 05:12:32,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 05:12:32,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1681 transitions. [2021-10-29 05:12:32,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-10-29 05:12:32,202 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:12:32,202 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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] [2021-10-29 05:12:32,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:12:32,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:12:32,426 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:12:32,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:12:32,426 INFO L85 PathProgramCache]: Analyzing trace with hash 801412518, now seen corresponding path program 1 times [2021-10-29 05:12:32,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:12:32,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11769730] [2021-10-29 05:12:32,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:12:32,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:12:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:12:32,486 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 98 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-10-29 05:12:32,487 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:12:32,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11769730] [2021-10-29 05:12:32,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11769730] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:12:32,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671125585] [2021-10-29 05:12:32,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:12:32,488 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:12:32,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:12:32,489 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:12:32,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-29 05:12:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:12:32,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:12:32,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:12:33,126 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-29 05:12:33,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:12:33,442 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-10-29 05:12:33,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671125585] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:12:33,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-29 05:12:33,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-29 05:12:33,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866060263] [2021-10-29 05:12:33,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:12:33,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:12:33,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:12:33,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:12:33,449 INFO L87 Difference]: Start difference. First operand 1423 states and 1681 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 05:12:33,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:12:33,876 INFO L93 Difference]: Finished difference Result 3200 states and 3821 transitions. [2021-10-29 05:12:33,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:12:33,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-10-29 05:12:33,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:12:33,886 INFO L225 Difference]: With dead ends: 3200 [2021-10-29 05:12:33,886 INFO L226 Difference]: Without dead ends: 1849 [2021-10-29 05:12:33,889 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:12:33,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2021-10-29 05:12:33,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1423. [2021-10-29 05:12:33,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 1422 states have (on average 1.1504922644163151) internal successors, (1636), 1422 states have internal predecessors, (1636), 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 05:12:33,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1636 transitions. [2021-10-29 05:12:33,930 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1636 transitions. Word has length 139 [2021-10-29 05:12:33,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:12:33,931 INFO L470 AbstractCegarLoop]: Abstraction has 1423 states and 1636 transitions. [2021-10-29 05:12:33,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 05:12:33,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1636 transitions. [2021-10-29 05:12:33,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-10-29 05:12:33,936 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:12:33,936 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:12:33,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:12:34,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:12:34,150 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:12:34,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:12:34,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1724318607, now seen corresponding path program 1 times [2021-10-29 05:12:34,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:12:34,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957253800] [2021-10-29 05:12:34,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:12:34,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:12:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:12:34,223 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 69 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-10-29 05:12:34,223 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:12:34,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957253800] [2021-10-29 05:12:34,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957253800] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:12:34,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050038772] [2021-10-29 05:12:34,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:12:34,226 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:12:34,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:12:34,230 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:12:34,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-29 05:12:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:12:34,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:12:34,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:12:35,009 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-10-29 05:12:35,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:12:35,331 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-10-29 05:12:35,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050038772] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:12:35,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-29 05:12:35,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-29 05:12:35,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120437529] [2021-10-29 05:12:35,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:12:35,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:12:35,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:12:35,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:12:35,334 INFO L87 Difference]: Start difference. First operand 1423 states and 1636 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 05:12:35,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:12:35,583 INFO L93 Difference]: Finished difference Result 1638 states and 1893 transitions. [2021-10-29 05:12:35,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:12:35,583 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 146 [2021-10-29 05:12:35,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:12:35,592 INFO L225 Difference]: With dead ends: 1638 [2021-10-29 05:12:35,592 INFO L226 Difference]: Without dead ends: 1636 [2021-10-29 05:12:35,594 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 290 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:12:35,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-10-29 05:12:35,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1494. [2021-10-29 05:12:35,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1493 states have (on average 1.1540522438044207) internal successors, (1723), 1493 states have internal predecessors, (1723), 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 05:12:35,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1723 transitions. [2021-10-29 05:12:35,633 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1723 transitions. Word has length 146 [2021-10-29 05:12:35,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:12:35,634 INFO L470 AbstractCegarLoop]: Abstraction has 1494 states and 1723 transitions. [2021-10-29 05:12:35,634 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 05:12:35,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1723 transitions. [2021-10-29 05:12:35,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-10-29 05:12:35,639 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:12:35,639 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:12:35,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:12:35,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-29 05:12:35,866 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:12:35,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:12:35,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1499042919, now seen corresponding path program 1 times [2021-10-29 05:12:35,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:12:35,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322924492] [2021-10-29 05:12:35,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:12:35,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:12:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:12:35,933 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 127 proven. 6 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-10-29 05:12:35,933 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:12:35,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322924492] [2021-10-29 05:12:35,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322924492] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:12:35,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605179347] [2021-10-29 05:12:35,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:12:35,934 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:12:35,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:12:35,935 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:12:35,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-29 05:12:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:12:36,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:12:36,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:12:36,976 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-10-29 05:12:36,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:12:37,646 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-10-29 05:12:37,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605179347] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:12:37,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-29 05:12:37,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-29 05:12:37,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828882707] [2021-10-29 05:12:37,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:12:37,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:12:37,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:12:37,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:12:37,652 INFO L87 Difference]: Start difference. First operand 1494 states and 1723 transitions. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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 05:12:38,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:12:38,041 INFO L93 Difference]: Finished difference Result 2914 states and 3358 transitions. [2021-10-29 05:12:38,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:12:38,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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 198 [2021-10-29 05:12:38,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:12:38,042 INFO L225 Difference]: With dead ends: 2914 [2021-10-29 05:12:38,042 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:12:38,044 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:12:38,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:12:38,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:12:38,045 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 05:12:38,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:12:38,045 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 198 [2021-10-29 05:12:38,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:12:38,045 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:12:38,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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 05:12:38,046 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:12:38,046 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:12:38,048 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:12:38,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-29 05:12:38,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-29 05:12:38,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 05:12:38,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:38,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:38,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:12:39,005 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-29 05:12:39,005 INFO L857 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-29 05:12:39,005 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-29 05:12:39,005 INFO L857 garLoopResultBuilder]: For program point L467-1(lines 40 585) no Hoare annotation was computed. [2021-10-29 05:12:39,005 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-29 05:12:39,005 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-29 05:12:39,006 INFO L857 garLoopResultBuilder]: For program point L468(line 468) no Hoare annotation was computed. [2021-10-29 05:12:39,006 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-29 05:12:39,006 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-29 05:12:39,006 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-29 05:12:39,006 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-29 05:12:39,006 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-29 05:12:39,006 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-29 05:12:39,007 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-29 05:12:39,007 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-29 05:12:39,007 INFO L857 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-29 05:12:39,007 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-29 05:12:39,007 INFO L857 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-29 05:12:39,007 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-29 05:12:39,007 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-29 05:12:39,007 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-29 05:12:39,008 INFO L857 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-29 05:12:39,008 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-29 05:12:39,008 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-29 05:12:39,008 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-29 05:12:39,008 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-29 05:12:39,008 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-29 05:12:39,009 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-29 05:12:39,009 INFO L857 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-29 05:12:39,009 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-29 05:12:39,009 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-29 05:12:39,009 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-29 05:12:39,009 INFO L857 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-29 05:12:39,009 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-29 05:12:39,010 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-29 05:12:39,010 INFO L857 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-29 05:12:39,010 INFO L857 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-29 05:12:39,010 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-29 05:12:39,010 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 05:12:39,010 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-29 05:12:39,011 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-29 05:12:39,011 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-29 05:12:39,011 INFO L853 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse4 (= ~a21~0 1)) (.cse6 (= ~a7~0 0)) (.cse5 (<= 15 ~a8~0)) (.cse2 (<= ~a16~0 4)) (.cse0 (<= ~a8~0 13)) (.cse9 (<= ~a21~0 0)) (.cse1 (= ~a17~0 1)) (.cse3 (= ~a20~0 1)) (.cse8 (<= 5 ~a16~0)) (.cse7 (<= ~a17~0 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse1 .cse5) (and .cse4 .cse6 .cse1 .cse2 .cse3) (and .cse7 .cse6 (<= ~a16~0 5)) (and .cse0 .cse4 .cse6 .cse1) (and .cse8 .cse9 .cse7 .cse3) (and .cse7 .cse5) (and .cse0 .cse9 .cse2) (and (not .cse3) .cse7 .cse2) (and .cse0 .cse9 .cse1 .cse3) (and .cse8 .cse7 (< 13 ~a8~0)))) [2021-10-29 05:12:39,011 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-29 05:12:39,011 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-29 05:12:39,012 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-29 05:12:39,012 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-29 05:12:39,012 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-29 05:12:39,012 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-29 05:12:39,012 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-29 05:12:39,012 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 05:12:39,013 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-29 05:12:39,013 INFO L860 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-29 05:12:39,013 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-29 05:12:39,013 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-29 05:12:39,013 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-29 05:12:39,013 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-29 05:12:39,013 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-29 05:12:39,014 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-29 05:12:39,014 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-29 05:12:39,014 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-29 05:12:39,014 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-29 05:12:39,014 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-29 05:12:39,014 INFO L857 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-29 05:12:39,015 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-29 05:12:39,015 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-29 05:12:39,015 INFO L853 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse4 (= ~a21~0 1)) (.cse6 (= ~a7~0 0)) (.cse5 (<= 15 ~a8~0)) (.cse2 (<= ~a16~0 4)) (.cse0 (<= ~a8~0 13)) (.cse9 (<= ~a21~0 0)) (.cse1 (= ~a17~0 1)) (.cse3 (= ~a20~0 1)) (.cse8 (<= 5 ~a16~0)) (.cse7 (<= ~a17~0 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse1 .cse5) (and .cse4 .cse6 .cse1 .cse2 .cse3) (and .cse7 .cse6 (<= ~a16~0 5)) (and .cse0 .cse4 .cse6 .cse1) (and .cse8 .cse9 .cse7 .cse3) (and .cse7 .cse5) (and .cse0 .cse9 .cse2) (and (not .cse3) .cse7 .cse2) (and .cse0 .cse9 .cse1 .cse3) (and .cse8 .cse7 (< 13 ~a8~0)))) [2021-10-29 05:12:39,015 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-29 05:12:39,015 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 468) no Hoare annotation was computed. [2021-10-29 05:12:39,015 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-29 05:12:39,016 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-29 05:12:39,016 INFO L857 garLoopResultBuilder]: For program point L464-1(lines 40 585) no Hoare annotation was computed. [2021-10-29 05:12:39,016 INFO L857 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-29 05:12:39,016 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-29 05:12:39,016 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-29 05:12:39,016 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-29 05:12:39,019 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:12:39,021 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:12:39,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:12:39 BoogieIcfgContainer [2021-10-29 05:12:39,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:12:39,042 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:12:39,042 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:12:39,042 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:12:39,043 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:12:25" (3/4) ... [2021-10-29 05:12:39,045 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:12:39,067 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 109 nodes and edges [2021-10-29 05:12:39,069 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-29 05:12:39,070 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-29 05:12:39,072 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:12:39,183 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:12:39,184 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:12:39,185 INFO L168 Benchmark]: Toolchain (without parser) took 16584.01 ms. Allocated memory was 113.2 MB in the beginning and 239.1 MB in the end (delta: 125.8 MB). Free memory was 69.5 MB in the beginning and 133.4 MB in the end (delta: -63.9 MB). Peak memory consumption was 61.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:12:39,185 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 113.2 MB. Free memory is still 88.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:12:39,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 685.46 ms. Allocated memory is still 113.2 MB. Free memory was 69.3 MB in the beginning and 70.5 MB in the end (delta: -1.3 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:12:39,186 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.38 ms. Allocated memory is still 113.2 MB. Free memory was 70.5 MB in the beginning and 64.7 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:12:39,187 INFO L168 Benchmark]: Boogie Preprocessor took 116.34 ms. Allocated memory is still 113.2 MB. Free memory was 64.7 MB in the beginning and 60.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:12:39,187 INFO L168 Benchmark]: RCFGBuilder took 2012.38 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 60.5 MB in the beginning and 68.5 MB in the end (delta: -8.0 MB). Peak memory consumption was 33.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:12:39,187 INFO L168 Benchmark]: TraceAbstraction took 13526.86 ms. Allocated memory was 136.3 MB in the beginning and 239.1 MB in the end (delta: 102.8 MB). Free memory was 68.5 MB in the beginning and 149.1 MB in the end (delta: -80.7 MB). Peak memory consumption was 110.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:12:39,188 INFO L168 Benchmark]: Witness Printer took 142.09 ms. Allocated memory is still 239.1 MB. Free memory was 149.1 MB in the beginning and 133.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:12:39,190 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 113.2 MB. Free memory is still 88.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 685.46 ms. Allocated memory is still 113.2 MB. Free memory was 69.3 MB in the beginning and 70.5 MB in the end (delta: -1.3 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 94.38 ms. Allocated memory is still 113.2 MB. Free memory was 70.5 MB in the beginning and 64.7 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 116.34 ms. Allocated memory is still 113.2 MB. Free memory was 64.7 MB in the beginning and 60.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2012.38 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 60.5 MB in the beginning and 68.5 MB in the end (delta: -8.0 MB). Peak memory consumption was 33.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13526.86 ms. Allocated memory was 136.3 MB in the beginning and 239.1 MB in the end (delta: 102.8 MB). Free memory was 68.5 MB in the beginning and 149.1 MB in the end (delta: -80.7 MB). Peak memory consumption was 110.8 MB. Max. memory is 16.1 GB. * Witness Printer took 142.09 ms. Allocated memory is still 239.1 MB. Free memory was 149.1 MB in the beginning and 133.4 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: 468]: 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, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.4s, OverallIterations: 12, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 680 SDtfs, 585 SDslu, 55 SDs, 0 SdLazy, 2696 SolverSat, 562 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1471 GetRequests, 1444 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1636occurred in iteration=7, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 1278 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 53 NumberOfFragments, 255 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1168 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 416 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 2090 NumberOfCodeBlocks, 2090 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 2790 ConstructedInterpolants, 0 QuantifiedInterpolants, 5655 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1945 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 22 InterpolantComputations, 17 PerfectInterpolantSequences, 2467/2497 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: 593]: Loop Invariant Derived loop invariant: ((((((((((((a8 <= 13 && a17 == 1) && a16 <= 4) && a20 == 1) || ((a21 == 1 && a17 == 1) && 15 <= a8)) || ((((a21 == 1 && a7 == 0) && a17 == 1) && a16 <= 4) && a20 == 1)) || ((a17 <= 0 && a7 == 0) && a16 <= 5)) || (((a8 <= 13 && a21 == 1) && a7 == 0) && a17 == 1)) || (((5 <= a16 && a21 <= 0) && a17 <= 0) && a20 == 1)) || (a17 <= 0 && 15 <= a8)) || ((a8 <= 13 && a21 <= 0) && a16 <= 4)) || ((!(a20 == 1) && a17 <= 0) && a16 <= 4)) || (((a8 <= 13 && a21 <= 0) && a17 == 1) && a20 == 1)) || ((5 <= a16 && a17 <= 0) && 13 < a8) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((((a8 <= 13 && a17 == 1) && a16 <= 4) && a20 == 1) || ((a21 == 1 && a17 == 1) && 15 <= a8)) || ((((a21 == 1 && a7 == 0) && a17 == 1) && a16 <= 4) && a20 == 1)) || ((a17 <= 0 && a7 == 0) && a16 <= 5)) || (((a8 <= 13 && a21 == 1) && a7 == 0) && a17 == 1)) || (((5 <= a16 && a21 <= 0) && a17 <= 0) && a20 == 1)) || (a17 <= 0 && 15 <= a8)) || ((a8 <= 13 && a21 <= 0) && a16 <= 4)) || ((!(a20 == 1) && a17 <= 0) && a16 <= 4)) || (((a8 <= 13 && a21 <= 0) && a17 == 1) && a20 == 1)) || ((5 <= a16 && a17 <= 0) && 13 < a8) RESULT: Ultimate proved your program to be correct! [2021-10-29 05:12:39,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba813677-14f5-43b2-bdfa-0eded5c5fef2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...