./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label23.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label23.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9f1cd2841a16dfe2f8fe839faac013546a2b72431aadffbb7fe449f6c6dcaf65 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:41:04,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:41:04,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:41:04,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:41:04,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:41:04,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:41:04,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:41:04,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:41:04,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:41:04,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:41:04,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:41:04,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:41:04,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:41:04,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:41:04,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:41:04,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:41:04,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:41:04,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:41:04,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:41:04,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:41:04,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:41:04,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:41:04,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:41:04,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:41:04,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:41:04,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:41:04,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:41:04,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:41:04,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:41:04,414 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:41:04,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:41:04,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:41:04,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:41:04,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:41:04,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:41:04,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:41:04,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:41:04,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:41:04,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:41:04,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:41:04,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:41:04,425 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 09:41:04,461 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:41:04,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:41:04,467 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:41:04,467 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:41:04,468 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:41:04,468 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:41:04,468 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:41:04,474 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:41:04,475 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:41:04,475 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:41:04,476 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:41:04,477 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:41:04,477 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:41:04,477 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:41:04,477 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:41:04,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:41:04,478 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:41:04,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:41:04,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:41:04,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:41:04,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:41:04,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:41:04,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:41:04,480 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:41:04,480 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:41:04,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:41:04,481 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:41:04,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:41:04,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:41:04,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:41:04,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:41:04,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:41:04,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:41:04,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:41:04,483 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:41:04,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:41:04,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:41:04,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:41:04,484 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:41:04,484 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_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f1cd2841a16dfe2f8fe839faac013546a2b72431aadffbb7fe449f6c6dcaf65 [2021-10-24 09:41:04,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:41:04,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:41:04,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:41:04,796 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:41:04,797 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:41:04,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/eca-rers2012/Problem01_label23.c [2021-10-24 09:41:04,892 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/data/421016a22/0908c4f3c3bd4f6582766739a2f41547/FLAGc46ccb82c [2021-10-24 09:41:05,438 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:41:05,438 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/sv-benchmarks/c/eca-rers2012/Problem01_label23.c [2021-10-24 09:41:05,463 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/data/421016a22/0908c4f3c3bd4f6582766739a2f41547/FLAGc46ccb82c [2021-10-24 09:41:05,684 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/data/421016a22/0908c4f3c3bd4f6582766739a2f41547 [2021-10-24 09:41:05,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:41:05,695 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:41:05,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:41:05,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:41:05,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:41:05,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:41:05" (1/1) ... [2021-10-24 09:41:05,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73fdfc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:05, skipping insertion in model container [2021-10-24 09:41:05,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:41:05" (1/1) ... [2021-10-24 09:41:05,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:41:05,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:41:06,122 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_3b6285d8-9116-4f21-b90d-42942b074c21/sv-benchmarks/c/eca-rers2012/Problem01_label23.c[17363,17376] [2021-10-24 09:41:06,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:41:06,173 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:41:06,326 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_3b6285d8-9116-4f21-b90d-42942b074c21/sv-benchmarks/c/eca-rers2012/Problem01_label23.c[17363,17376] [2021-10-24 09:41:06,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:41:06,393 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:41:06,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:06 WrapperNode [2021-10-24 09:41:06,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:41:06,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:41:06,395 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:41:06,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:41:06,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:06" (1/1) ... [2021-10-24 09:41:06,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:06" (1/1) ... [2021-10-24 09:41:06,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:41:06,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:41:06,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:41:06,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:41:06,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:06" (1/1) ... [2021-10-24 09:41:06,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:06" (1/1) ... [2021-10-24 09:41:06,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:06" (1/1) ... [2021-10-24 09:41:06,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:06" (1/1) ... [2021-10-24 09:41:06,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:06" (1/1) ... [2021-10-24 09:41:06,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:06" (1/1) ... [2021-10-24 09:41:06,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:06" (1/1) ... [2021-10-24 09:41:06,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:41:06,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:41:06,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:41:06,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:41:06,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:06" (1/1) ... [2021-10-24 09:41:06,632 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:41:06,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:41:06,662 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:41:06,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:41:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 09:41:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:41:06,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:41:06,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:41:08,452 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:41:08,452 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-24 09:41:08,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:41:08 BoogieIcfgContainer [2021-10-24 09:41:08,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:41:08,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:41:08,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:41:08,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:41:08,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:41:05" (1/3) ... [2021-10-24 09:41:08,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c68af69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:41:08, skipping insertion in model container [2021-10-24 09:41:08,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:06" (2/3) ... [2021-10-24 09:41:08,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c68af69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:41:08, skipping insertion in model container [2021-10-24 09:41:08,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:41:08" (3/3) ... [2021-10-24 09:41:08,471 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label23.c [2021-10-24 09:41:08,477 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:41:08,477 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 09:41:08,526 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:41:08,533 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 09:41:08,533 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 09:41:08,549 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) [2021-10-24 09:41:08,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-24 09:41:08,557 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:08,558 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:08,558 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:08,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:08,564 INFO L82 PathProgramCache]: Analyzing trace with hash 379012030, now seen corresponding path program 1 times [2021-10-24 09:41:08,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:41:08,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815228216] [2021-10-24 09:41:08,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:08,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:41:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:08,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:08,983 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:41:08,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815228216] [2021-10-24 09:41:08,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815228216] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:08,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:08,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:41:08,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601133081] [2021-10-24 09:41:09,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:41:09,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:41:09,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:41:09,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:41:09,023 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) [2021-10-24 09:41:09,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:09,474 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-24 09:41:09,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:41:09,476 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 [2021-10-24 09:41:09,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:09,489 INFO L225 Difference]: With dead ends: 224 [2021-10-24 09:41:09,489 INFO L226 Difference]: Without dead ends: 145 [2021-10-24 09:41:09,493 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:41:09,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-24 09:41:09,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-24 09:41:09,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.8402777777777777) internal successors, (265), 144 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:09,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 265 transitions. [2021-10-24 09:41:09,543 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 265 transitions. Word has length 71 [2021-10-24 09:41:09,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:09,544 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 265 transitions. [2021-10-24 09:41:09,544 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) [2021-10-24 09:41:09,544 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 265 transitions. [2021-10-24 09:41:09,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-24 09:41:09,548 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:09,549 INFO L512 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] [2021-10-24 09:41:09,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 09:41:09,549 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:09,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:09,550 INFO L82 PathProgramCache]: Analyzing trace with hash -615349679, now seen corresponding path program 1 times [2021-10-24 09:41:09,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:41:09,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7431353] [2021-10-24 09:41:09,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:09,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:41:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:09,602 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:09,603 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:41:09,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7431353] [2021-10-24 09:41:09,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7431353] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:09,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:09,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:41:09,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548051284] [2021-10-24 09:41:09,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:41:09,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:41:09,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:41:09,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:41:09,607 INFO L87 Difference]: Start difference. First operand 145 states and 265 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) [2021-10-24 09:41:09,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:09,961 INFO L93 Difference]: Finished difference Result 431 states and 792 transitions. [2021-10-24 09:41:09,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:41:09,961 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 [2021-10-24 09:41:09,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:09,964 INFO L225 Difference]: With dead ends: 431 [2021-10-24 09:41:09,964 INFO L226 Difference]: Without dead ends: 287 [2021-10-24 09:41:09,965 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:41:09,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-24 09:41:10,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-24 09:41:10,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.6993006993006994) internal successors, (486), 286 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:10,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 486 transitions. [2021-10-24 09:41:10,009 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 486 transitions. Word has length 77 [2021-10-24 09:41:10,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:10,010 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 486 transitions. [2021-10-24 09:41:10,011 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) [2021-10-24 09:41:10,011 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 486 transitions. [2021-10-24 09:41:10,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-24 09:41:10,020 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:10,020 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:10,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 09:41:10,021 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:10,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:10,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1583667279, now seen corresponding path program 1 times [2021-10-24 09:41:10,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:41:10,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264034706] [2021-10-24 09:41:10,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:10,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:41:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:10,158 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:10,159 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:41:10,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264034706] [2021-10-24 09:41:10,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264034706] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:10,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:10,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:41:10,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033476296] [2021-10-24 09:41:10,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:41:10,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:41:10,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:41:10,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:41:10,175 INFO L87 Difference]: Start difference. First operand 287 states and 486 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:10,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:10,553 INFO L93 Difference]: Finished difference Result 786 states and 1330 transitions. [2021-10-24 09:41:10,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:41:10,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2021-10-24 09:41:10,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:10,557 INFO L225 Difference]: With dead ends: 786 [2021-10-24 09:41:10,558 INFO L226 Difference]: Without dead ends: 500 [2021-10-24 09:41:10,559 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:41:10,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-10-24 09:41:10,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 358. [2021-10-24 09:41:10,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6274509803921569) internal successors, (581), 357 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:10,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 581 transitions. [2021-10-24 09:41:10,588 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 581 transitions. Word has length 78 [2021-10-24 09:41:10,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:10,589 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 581 transitions. [2021-10-24 09:41:10,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:10,589 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 581 transitions. [2021-10-24 09:41:10,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-24 09:41:10,591 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:10,591 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:10,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 09:41:10,592 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:10,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:10,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1567515934, now seen corresponding path program 1 times [2021-10-24 09:41:10,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:41:10,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693494558] [2021-10-24 09:41:10,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:10,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:41:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:10,696 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:10,697 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:41:10,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693494558] [2021-10-24 09:41:10,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693494558] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:10,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:10,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:41:10,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145889852] [2021-10-24 09:41:10,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:41:10,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:41:10,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:41:10,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:41:10,700 INFO L87 Difference]: Start difference. First operand 358 states and 581 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:11,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:11,026 INFO L93 Difference]: Finished difference Result 1070 states and 1740 transitions. [2021-10-24 09:41:11,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:41:11,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 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 84 [2021-10-24 09:41:11,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:11,039 INFO L225 Difference]: With dead ends: 1070 [2021-10-24 09:41:11,039 INFO L226 Difference]: Without dead ends: 642 [2021-10-24 09:41:11,041 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:41:11,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-10-24 09:41:11,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2021-10-24 09:41:11,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.3213728549141965) internal successors, (847), 641 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:11,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 847 transitions. [2021-10-24 09:41:11,084 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 847 transitions. Word has length 84 [2021-10-24 09:41:11,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:11,084 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 847 transitions. [2021-10-24 09:41:11,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:11,085 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 847 transitions. [2021-10-24 09:41:11,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-10-24 09:41:11,087 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:11,087 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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] [2021-10-24 09:41:11,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-24 09:41:11,087 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:11,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:11,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1122585044, now seen corresponding path program 1 times [2021-10-24 09:41:11,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:41:11,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151673481] [2021-10-24 09:41:11,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:11,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:41:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:11,150 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-24 09:41:11,151 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:41:11,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151673481] [2021-10-24 09:41:11,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151673481] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:11,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:11,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:41:11,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344892692] [2021-10-24 09:41:11,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:41:11,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:41:11,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:41:11,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:41:11,154 INFO L87 Difference]: Start difference. First operand 642 states and 847 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:11,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:11,475 INFO L93 Difference]: Finished difference Result 1496 states and 2001 transitions. [2021-10-24 09:41:11,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:41:11,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-10-24 09:41:11,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:11,481 INFO L225 Difference]: With dead ends: 1496 [2021-10-24 09:41:11,482 INFO L226 Difference]: Without dead ends: 926 [2021-10-24 09:41:11,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:41:11,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-24 09:41:11,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2021-10-24 09:41:11,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.3231162196679438) internal successors, (1036), 783 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:11,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1036 transitions. [2021-10-24 09:41:11,510 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1036 transitions. Word has length 97 [2021-10-24 09:41:11,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:11,510 INFO L470 AbstractCegarLoop]: Abstraction has 784 states and 1036 transitions. [2021-10-24 09:41:11,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:11,511 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1036 transitions. [2021-10-24 09:41:11,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-10-24 09:41:11,513 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:11,513 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:11,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-24 09:41:11,513 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:11,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:11,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1326613091, now seen corresponding path program 1 times [2021-10-24 09:41:11,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:41:11,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787052535] [2021-10-24 09:41:11,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:11,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:41:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:11,592 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-24 09:41:11,592 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:41:11,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787052535] [2021-10-24 09:41:11,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787052535] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:11,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:11,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:41:11,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737851548] [2021-10-24 09:41:11,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:41:11,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:41:11,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:41:11,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:41:11,595 INFO L87 Difference]: Start difference. First operand 784 states and 1036 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:11,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:11,876 INFO L93 Difference]: Finished difference Result 1567 states and 2086 transitions. [2021-10-24 09:41:11,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:41:11,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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 99 [2021-10-24 09:41:11,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:11,882 INFO L225 Difference]: With dead ends: 1567 [2021-10-24 09:41:11,882 INFO L226 Difference]: Without dead ends: 855 [2021-10-24 09:41:11,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:41:11,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-24 09:41:11,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 855. [2021-10-24 09:41:11,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.3056206088992974) internal successors, (1115), 854 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:11,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1115 transitions. [2021-10-24 09:41:11,920 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1115 transitions. Word has length 99 [2021-10-24 09:41:11,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:11,920 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1115 transitions. [2021-10-24 09:41:11,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:11,921 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1115 transitions. [2021-10-24 09:41:11,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-24 09:41:11,923 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:11,924 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:11,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-24 09:41:11,924 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:11,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:11,925 INFO L82 PathProgramCache]: Analyzing trace with hash -681446245, now seen corresponding path program 1 times [2021-10-24 09:41:11,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:41:11,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313877809] [2021-10-24 09:41:11,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:11,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:41:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:12,034 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-24 09:41:12,034 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:41:12,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313877809] [2021-10-24 09:41:12,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313877809] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:12,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:12,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:41:12,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805684435] [2021-10-24 09:41:12,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:41:12,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:41:12,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:41:12,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:41:12,039 INFO L87 Difference]: Start difference. First operand 855 states and 1115 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:12,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:12,462 INFO L93 Difference]: Finished difference Result 1780 states and 2335 transitions. [2021-10-24 09:41:12,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:41:12,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-10-24 09:41:12,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:12,469 INFO L225 Difference]: With dead ends: 1780 [2021-10-24 09:41:12,469 INFO L226 Difference]: Without dead ends: 997 [2021-10-24 09:41:12,470 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:41:12,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-24 09:41:12,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2021-10-24 09:41:12,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.2854054054054054) internal successors, (1189), 925 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:12,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1189 transitions. [2021-10-24 09:41:12,499 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1189 transitions. Word has length 103 [2021-10-24 09:41:12,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:12,499 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 1189 transitions. [2021-10-24 09:41:12,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:12,500 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1189 transitions. [2021-10-24 09:41:12,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-24 09:41:12,502 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:12,503 INFO L512 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:12,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-24 09:41:12,503 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:12,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:12,504 INFO L82 PathProgramCache]: Analyzing trace with hash 2040989690, now seen corresponding path program 1 times [2021-10-24 09:41:12,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:41:12,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245340491] [2021-10-24 09:41:12,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:12,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:41:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:12,570 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:12,571 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:41:12,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245340491] [2021-10-24 09:41:12,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245340491] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:12,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:12,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:41:12,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319709841] [2021-10-24 09:41:12,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:41:12,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:41:12,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:41:12,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:41:12,574 INFO L87 Difference]: Start difference. First operand 926 states and 1189 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:12,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:12,976 INFO L93 Difference]: Finished difference Result 1993 states and 2589 transitions. [2021-10-24 09:41:12,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:41:12,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 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 121 [2021-10-24 09:41:12,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:12,983 INFO L225 Difference]: With dead ends: 1993 [2021-10-24 09:41:12,983 INFO L226 Difference]: Without dead ends: 1068 [2021-10-24 09:41:12,985 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:41:12,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-10-24 09:41:13,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 926. [2021-10-24 09:41:13,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 1.2572972972972973) internal successors, (1163), 925 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:13,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1163 transitions. [2021-10-24 09:41:13,012 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1163 transitions. Word has length 121 [2021-10-24 09:41:13,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:13,013 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 1163 transitions. [2021-10-24 09:41:13,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:13,014 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1163 transitions. [2021-10-24 09:41:13,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-10-24 09:41:13,017 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:13,017 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-24 09:41:13,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-24 09:41:13,018 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:13,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:13,018 INFO L82 PathProgramCache]: Analyzing trace with hash 433137106, now seen corresponding path program 1 times [2021-10-24 09:41:13,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:41:13,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887481843] [2021-10-24 09:41:13,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:13,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:41:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:13,211 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 64 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:13,211 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:41:13,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887481843] [2021-10-24 09:41:13,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887481843] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 09:41:13,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601198442] [2021-10-24 09:41:13,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:13,214 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:41:13,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:41:13,220 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:41:13,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 09:41:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:13,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 09:41:13,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:13,868 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-10-24 09:41:13,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:14,237 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-10-24 09:41:14,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601198442] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:14,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-24 09:41:14,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [4] total 5 [2021-10-24 09:41:14,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711914902] [2021-10-24 09:41:14,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:41:14,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:41:14,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:41:14,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:41:14,242 INFO L87 Difference]: Start difference. First operand 926 states and 1163 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:14,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:14,542 INFO L93 Difference]: Finished difference Result 2490 states and 3145 transitions. [2021-10-24 09:41:14,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:41:14,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 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 137 [2021-10-24 09:41:14,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:14,553 INFO L225 Difference]: With dead ends: 2490 [2021-10-24 09:41:14,553 INFO L226 Difference]: Without dead ends: 1565 [2021-10-24 09:41:14,555 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 272 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.2ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:41:14,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2021-10-24 09:41:14,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1565. [2021-10-24 09:41:14,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1564 states have (on average 1.223145780051151) internal successors, (1913), 1564 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:14,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1913 transitions. [2021-10-24 09:41:14,602 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1913 transitions. Word has length 137 [2021-10-24 09:41:14,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:14,603 INFO L470 AbstractCegarLoop]: Abstraction has 1565 states and 1913 transitions. [2021-10-24 09:41:14,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:14,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1913 transitions. [2021-10-24 09:41:14,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-10-24 09:41:14,607 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:14,607 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:14,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:14,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:41:14,832 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:14,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:14,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1862876140, now seen corresponding path program 1 times [2021-10-24 09:41:14,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:41:14,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257632448] [2021-10-24 09:41:14,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:14,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:41:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:14,947 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 101 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-24 09:41:14,948 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:41:14,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257632448] [2021-10-24 09:41:14,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257632448] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 09:41:14,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480175192] [2021-10-24 09:41:14,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:14,949 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:41:14,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:41:14,950 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:41:14,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 09:41:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:15,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 09:41:15,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:15,514 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-10-24 09:41:15,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:15,876 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-10-24 09:41:15,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480175192] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:15,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-24 09:41:15,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-24 09:41:15,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408554579] [2021-10-24 09:41:15,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:41:15,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:41:15,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:41:15,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:41:15,879 INFO L87 Difference]: Start difference. First operand 1565 states and 1913 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:16,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:16,170 INFO L93 Difference]: Finished difference Result 3200 states and 3917 transitions. [2021-10-24 09:41:16,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:41:16,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 153 [2021-10-24 09:41:16,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:16,182 INFO L225 Difference]: With dead ends: 3200 [2021-10-24 09:41:16,182 INFO L226 Difference]: Without dead ends: 1636 [2021-10-24 09:41:16,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 304 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.6ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:41:16,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-10-24 09:41:16,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1494. [2021-10-24 09:41:16,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1493 states have (on average 1.1654387139986604) internal successors, (1740), 1493 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:16,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1740 transitions. [2021-10-24 09:41:16,230 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1740 transitions. Word has length 153 [2021-10-24 09:41:16,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:16,231 INFO L470 AbstractCegarLoop]: Abstraction has 1494 states and 1740 transitions. [2021-10-24 09:41:16,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:16,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1740 transitions. [2021-10-24 09:41:16,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-10-24 09:41:16,235 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:16,236 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:16,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:16,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-24 09:41:16,465 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:16,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:16,465 INFO L82 PathProgramCache]: Analyzing trace with hash 165050277, now seen corresponding path program 1 times [2021-10-24 09:41:16,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:41:16,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630081546] [2021-10-24 09:41:16,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:16,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:41:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:16,559 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 132 proven. 11 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-10-24 09:41:16,559 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:41:16,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630081546] [2021-10-24 09:41:16,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630081546] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 09:41:16,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50095915] [2021-10-24 09:41:16,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:16,560 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:41:16,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:41:16,565 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:41:16,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-24 09:41:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:16,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 09:41:16,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:17,384 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-10-24 09:41:17,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:17,719 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-10-24 09:41:17,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50095915] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:17,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-24 09:41:17,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-24 09:41:17,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2601658] [2021-10-24 09:41:17,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:41:17,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:41:17,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:41:17,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:41:17,722 INFO L87 Difference]: Start difference. First operand 1494 states and 1740 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:17,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:17,980 INFO L93 Difference]: Finished difference Result 2914 states and 3410 transitions. [2021-10-24 09:41:17,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:41:17,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 170 [2021-10-24 09:41:17,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:17,981 INFO L225 Difference]: With dead ends: 2914 [2021-10-24 09:41:17,981 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 09:41:17,984 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 338 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.6ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:41:17,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 09:41:17,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 09:41:17,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:17,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 09:41:17,987 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 170 [2021-10-24 09:41:17,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:17,988 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 09:41:17,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:17,988 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 09:41:17,988 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 09:41:17,991 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:41:18,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:18,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:41:18,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 09:41:18,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:41:18,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:41:18,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:41:18,556 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-24 09:41:18,556 INFO L857 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-24 09:41:18,556 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-24 09:41:18,556 INFO L857 garLoopResultBuilder]: For program point L467-1(lines 40 585) no Hoare annotation was computed. [2021-10-24 09:41:18,556 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-24 09:41:18,557 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-24 09:41:18,557 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-24 09:41:18,557 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-24 09:41:18,557 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-24 09:41:18,557 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-24 09:41:18,557 INFO L857 garLoopResultBuilder]: For program point L470-1(lines 40 585) no Hoare annotation was computed. [2021-10-24 09:41:18,557 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-24 09:41:18,557 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-24 09:41:18,557 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-24 09:41:18,558 INFO L857 garLoopResultBuilder]: For program point L471(line 471) no Hoare annotation was computed. [2021-10-24 09:41:18,558 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-24 09:41:18,558 INFO L857 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-24 09:41:18,558 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-24 09:41:18,558 INFO L857 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-24 09:41:18,558 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-24 09:41:18,558 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-24 09:41:18,558 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-24 09:41:18,558 INFO L857 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-24 09:41:18,559 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-24 09:41:18,559 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-24 09:41:18,559 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-24 09:41:18,559 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-24 09:41:18,559 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-24 09:41:18,559 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-24 09:41:18,559 INFO L857 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-24 09:41:18,559 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-24 09:41:18,559 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-24 09:41:18,560 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-24 09:41:18,560 INFO L857 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-24 09:41:18,560 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-24 09:41:18,560 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-24 09:41:18,560 INFO L857 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-24 09:41:18,560 INFO L857 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-24 09:41:18,560 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-24 09:41:18,560 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 09:41:18,560 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-24 09:41:18,561 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-24 09:41:18,561 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-24 09:41:18,561 INFO L853 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse7 (<= ~a17~0 0)) (.cse1 (<= ~a20~0 0)) (.cse5 (<= ~a8~0 13)) (.cse0 (<= ~a7~0 0)) (.cse2 (= ~a21~0 1)) (.cse3 (= ~a17~0 1)) (.cse4 (<= ~a16~0 5)) (.cse6 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse2 .cse3) (and .cse5 (not (= ~a7~0 1)) .cse6) (and .cse1 .cse7) (and .cse5 .cse3 .cse6) (and (<= 5 ~a16~0) .cse7 .cse6) (and .cse5 .cse7) (and .cse0 .cse7 .cse6) (and .cse1 .cse5) (and .cse0 .cse2 .cse3 .cse4 .cse6))) [2021-10-24 09:41:18,561 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-24 09:41:18,561 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-24 09:41:18,561 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-24 09:41:18,562 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-24 09:41:18,562 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-24 09:41:18,562 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-24 09:41:18,562 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-24 09:41:18,562 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 09:41:18,562 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-24 09:41:18,562 INFO L860 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-24 09:41:18,562 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-24 09:41:18,562 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-24 09:41:18,562 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-24 09:41:18,563 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-24 09:41:18,563 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-24 09:41:18,563 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-24 09:41:18,563 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-24 09:41:18,563 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-24 09:41:18,563 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-24 09:41:18,563 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-24 09:41:18,563 INFO L857 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-24 09:41:18,563 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-24 09:41:18,564 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-24 09:41:18,564 INFO L853 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse7 (<= ~a17~0 0)) (.cse1 (<= ~a20~0 0)) (.cse5 (<= ~a8~0 13)) (.cse0 (<= ~a7~0 0)) (.cse2 (= ~a21~0 1)) (.cse3 (= ~a17~0 1)) (.cse4 (<= ~a16~0 5)) (.cse6 (= ~a20~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse2 .cse3) (and .cse5 (not (= ~a7~0 1)) .cse6) (and .cse1 .cse7) (and .cse5 .cse3 .cse6) (and (<= 5 ~a16~0) .cse7 .cse6) (and .cse5 .cse7) (and .cse0 .cse7 .cse6) (and .cse1 .cse5) (and .cse0 .cse2 .cse3 .cse4 .cse6))) [2021-10-24 09:41:18,564 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-24 09:41:18,564 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 471) no Hoare annotation was computed. [2021-10-24 09:41:18,564 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-24 09:41:18,564 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-24 09:41:18,564 INFO L857 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-24 09:41:18,565 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-24 09:41:18,565 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-24 09:41:18,565 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-24 09:41:18,569 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:41:18,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:41:18 BoogieIcfgContainer [2021-10-24 09:41:18,587 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:41:18,588 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:41:18,588 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:41:18,588 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:41:18,589 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:41:08" (3/4) ... [2021-10-24 09:41:18,591 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 09:41:18,613 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 109 nodes and edges [2021-10-24 09:41:18,615 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-24 09:41:18,617 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-24 09:41:18,618 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 09:41:18,733 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 09:41:18,734 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:41:18,735 INFO L168 Benchmark]: Toolchain (without parser) took 13039.60 ms. Allocated memory was 86.0 MB in the beginning and 192.9 MB in the end (delta: 107.0 MB). Free memory was 48.4 MB in the beginning and 51.7 MB in the end (delta: -3.3 MB). Peak memory consumption was 102.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:18,735 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory is still 66.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:41:18,736 INFO L168 Benchmark]: CACSL2BoogieTranslator took 696.74 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 48.2 MB in the beginning and 77.3 MB in the end (delta: -29.1 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:18,736 INFO L168 Benchmark]: Boogie Procedure Inliner took 114.71 ms. Allocated memory is still 119.5 MB. Free memory was 77.3 MB in the beginning and 71.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:18,736 INFO L168 Benchmark]: Boogie Preprocessor took 102.52 ms. Allocated memory is still 119.5 MB. Free memory was 71.9 MB in the beginning and 67.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:18,737 INFO L168 Benchmark]: RCFGBuilder took 1847.57 ms. Allocated memory is still 119.5 MB. Free memory was 67.7 MB in the beginning and 57.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 40.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:18,737 INFO L168 Benchmark]: TraceAbstraction took 10123.70 ms. Allocated memory was 119.5 MB in the beginning and 192.9 MB in the end (delta: 73.4 MB). Free memory was 56.4 MB in the beginning and 66.4 MB in the end (delta: -10.0 MB). Peak memory consumption was 63.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:18,737 INFO L168 Benchmark]: Witness Printer took 145.95 ms. Allocated memory is still 192.9 MB. Free memory was 66.4 MB in the beginning and 51.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:18,739 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 86.0 MB. Free memory is still 66.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 696.74 ms. Allocated memory was 86.0 MB in the beginning and 119.5 MB in the end (delta: 33.6 MB). Free memory was 48.2 MB in the beginning and 77.3 MB in the end (delta: -29.1 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 114.71 ms. Allocated memory is still 119.5 MB. Free memory was 77.3 MB in the beginning and 71.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 102.52 ms. Allocated memory is still 119.5 MB. Free memory was 71.9 MB in the beginning and 67.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1847.57 ms. Allocated memory is still 119.5 MB. Free memory was 67.7 MB in the beginning and 57.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 40.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10123.70 ms. Allocated memory was 119.5 MB in the beginning and 192.9 MB in the end (delta: 73.4 MB). Free memory was 56.4 MB in the beginning and 66.4 MB in the end (delta: -10.0 MB). Peak memory consumption was 63.4 MB. Max. memory is 16.1 GB. * Witness Printer took 145.95 ms. Allocated memory is still 192.9 MB. Free memory was 66.4 MB in the beginning and 51.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 471]: 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: 10044.5ms, OverallIterations: 11, TraceHistogramMax: 6, EmptinessCheckTime: 45.4ms, AutomataDifference: 3940.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 338.7ms, InitialAbstractionConstructionTime: 11.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 620 SDtfs, 680 SDslu, 47 SDs, 0 SdLazy, 2401 SolverSat, 526 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2615.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 946 GetRequests, 924 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 82.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1565occurred in iteration=9, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 360.9ms AutomataMinimizationTime, 11 MinimizatonAttempts, 639 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 49 NumberOfFragments, 231 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2414 FormulaSimplificationTreeSizeReduction, 58.6ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 54 FormulaSimplificationTreeSizeReductionInter, 271.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 147.8ms SsaConstructionTime, 533.1ms SatisfiabilityAnalysisTime, 3308.9ms InterpolantComputationTime, 1650 NumberOfCodeBlocks, 1650 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2093 ConstructedInterpolants, 0 QuantifiedInterpolants, 5092 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1118 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 17 InterpolantComputations, 14 PerfectInterpolantSequences, 1431/1482 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: ((((((((((((a7 <= 0 && a20 <= 0) && a21 == 1) && a17 == 1) || (((a20 <= 0 && a21 == 1) && a17 == 1) && a16 <= 5)) || ((a8 <= 13 && a21 == 1) && a17 == 1)) || ((a8 <= 13 && !(a7 == 1)) && a20 == 1)) || (a20 <= 0 && a17 <= 0)) || ((a8 <= 13 && a17 == 1) && a20 == 1)) || ((5 <= a16 && a17 <= 0) && a20 == 1)) || (a8 <= 13 && a17 <= 0)) || ((a7 <= 0 && a17 <= 0) && a20 == 1)) || (a20 <= 0 && a8 <= 13)) || ((((a7 <= 0 && a21 == 1) && a17 == 1) && a16 <= 5) && a20 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((((a7 <= 0 && a20 <= 0) && a21 == 1) && a17 == 1) || (((a20 <= 0 && a21 == 1) && a17 == 1) && a16 <= 5)) || ((a8 <= 13 && a21 == 1) && a17 == 1)) || ((a8 <= 13 && !(a7 == 1)) && a20 == 1)) || (a20 <= 0 && a17 <= 0)) || ((a8 <= 13 && a17 == 1) && a20 == 1)) || ((5 <= a16 && a17 <= 0) && a20 == 1)) || (a8 <= 13 && a17 <= 0)) || ((a7 <= 0 && a17 <= 0) && a20 == 1)) || (a20 <= 0 && a8 <= 13)) || ((((a7 <= 0 && a21 == 1) && a17 == 1) && a16 <= 5) && a20 == 1) RESULT: Ultimate proved your program to be correct! [2021-10-24 09:41:18,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6285d8-9116-4f21-b90d-42942b074c21/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...