./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label28.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ec38de-8ff6-4fe2-bd98-a51eb220f15e/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ec38de-8ff6-4fe2-bd98-a51eb220f15e/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ec38de-8ff6-4fe2-bd98-a51eb220f15e/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ec38de-8ff6-4fe2-bd98-a51eb220f15e/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label28.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ec38de-8ff6-4fe2-bd98-a51eb220f15e/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ec38de-8ff6-4fe2-bd98-a51eb220f15e/bin/utaipan-WLngWcDbfI --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 dafba940bcb700dc5bab41ac332b469176c57bc7 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:27:03,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:03,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:03,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:03,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:03,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:03,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:03,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:03,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:03,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:03,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:03,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:03,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:03,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:03,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:03,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:03,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:03,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:03,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:03,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:03,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:03,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:03,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:03,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:03,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:03,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:03,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:03,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:03,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:03,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:03,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:03,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:03,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:03,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:03,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:03,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:03,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:03,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:03,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:03,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:03,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:03,915 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ec38de-8ff6-4fe2-bd98-a51eb220f15e/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:27:03,960 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:03,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:03,963 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:03,963 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:03,963 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:03,964 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:03,964 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:03,964 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:03,965 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:03,965 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:03,966 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:03,967 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:03,967 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:03,967 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:03,968 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:03,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:03,969 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:03,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:03,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:03,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:03,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:03,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:03,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:03,971 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:03,972 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:03,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:03,972 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:03,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:03,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:03,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:03,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:03,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:03,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:03,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:03,977 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:03,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:03,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:03,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:03,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:03,979 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_12ec38de-8ff6-4fe2-bd98-a51eb220f15e/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ec38de-8ff6-4fe2-bd98-a51eb220f15e/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dafba940bcb700dc5bab41ac332b469176c57bc7 [2021-10-11 02:27:04,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:04,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:04,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:04,338 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:04,345 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:04,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ec38de-8ff6-4fe2-bd98-a51eb220f15e/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label28.c [2021-10-11 02:27:04,432 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ec38de-8ff6-4fe2-bd98-a51eb220f15e/bin/utaipan-WLngWcDbfI/data/8be7f2b9f/c9cc2ac99a1e42e18b4451c963c7a3eb/FLAG6c6785fca [2021-10-11 02:27:05,094 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:05,095 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ec38de-8ff6-4fe2-bd98-a51eb220f15e/sv-benchmarks/c/eca-rers2012/Problem01_label28.c [2021-10-11 02:27:05,118 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ec38de-8ff6-4fe2-bd98-a51eb220f15e/bin/utaipan-WLngWcDbfI/data/8be7f2b9f/c9cc2ac99a1e42e18b4451c963c7a3eb/FLAG6c6785fca [2021-10-11 02:27:05,381 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ec38de-8ff6-4fe2-bd98-a51eb220f15e/bin/utaipan-WLngWcDbfI/data/8be7f2b9f/c9cc2ac99a1e42e18b4451c963c7a3eb [2021-10-11 02:27:05,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:05,387 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:05,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:05,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:05,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:05,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:05" (1/1) ... [2021-10-11 02:27:05,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75c8ec2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:05, skipping insertion in model container [2021-10-11 02:27:05,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:05" (1/1) ... [2021-10-11 02:27:05,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:05,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:05,984 WARN L226 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_12ec38de-8ff6-4fe2-bd98-a51eb220f15e/sv-benchmarks/c/eca-rers2012/Problem01_label28.c[17117,17130] [2021-10-11 02:27:06,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:06,064 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:06,191 WARN L226 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_12ec38de-8ff6-4fe2-bd98-a51eb220f15e/sv-benchmarks/c/eca-rers2012/Problem01_label28.c[17117,17130] [2021-10-11 02:27:06,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:06,243 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:06,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:06 WrapperNode [2021-10-11 02:27:06,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:06,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:06,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:06,246 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:06,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:06" (1/1) ... [2021-10-11 02:27:06,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:06" (1/1) ... [2021-10-11 02:27:06,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:06,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:06,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:06,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:06,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:06" (1/1) ... [2021-10-11 02:27:06,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:06" (1/1) ... [2021-10-11 02:27:06,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:06" (1/1) ... [2021-10-11 02:27:06,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:06" (1/1) ... [2021-10-11 02:27:06,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:06" (1/1) ... [2021-10-11 02:27:06,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:06" (1/1) ... [2021-10-11 02:27:06,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:06" (1/1) ... [2021-10-11 02:27:06,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:06,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:06,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:06,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:06,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:06" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ec38de-8ff6-4fe2-bd98-a51eb220f15e/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:06,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:27:06,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:27:06,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:06,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:08,765 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:08,766 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:27:08,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:08 BoogieIcfgContainer [2021-10-11 02:27:08,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:08,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:08,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:08,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:08,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:05" (1/3) ... [2021-10-11 02:27:08,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118cc763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:08, skipping insertion in model container [2021-10-11 02:27:08,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:06" (2/3) ... [2021-10-11 02:27:08,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@118cc763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:08, skipping insertion in model container [2021-10-11 02:27:08,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:08" (3/3) ... [2021-10-11 02:27:08,778 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label28.c [2021-10-11 02:27:08,792 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:08,796 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:27:08,808 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:27:08,847 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:08,847 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:27:08,847 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:08,847 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:08,847 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:08,847 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:08,848 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:08,848 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:08,866 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:27:08,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:27:08,876 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:08,877 INFO L422 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] [2021-10-11 02:27:08,878 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:08,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:08,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1806913880, now seen corresponding path program 1 times [2021-10-11 02:27:08,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:08,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150194272] [2021-10-11 02:27:08,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:09,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:09,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150194272] [2021-10-11 02:27:09,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:09,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:09,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226735759] [2021-10-11 02:27:09,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:09,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:09,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:09,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:09,416 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2021-10-11 02:27:10,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:10,008 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-11 02:27:10,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:10,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2021-10-11 02:27:10,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:10,035 INFO L225 Difference]: With dead ends: 224 [2021-10-11 02:27:10,036 INFO L226 Difference]: Without dead ends: 145 [2021-10-11 02:27:10,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:10,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-11 02:27:10,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-11 02:27:10,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2021-10-11 02:27:10,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2021-10-11 02:27:10,111 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2021-10-11 02:27:10,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:10,112 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2021-10-11 02:27:10,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:10,113 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2021-10-11 02:27:10,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-11 02:27:10,118 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:10,119 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:10,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:27:10,119 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:10,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:10,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1694594366, now seen corresponding path program 1 times [2021-10-11 02:27:10,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:10,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452482392] [2021-10-11 02:27:10,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:10,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:10,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452482392] [2021-10-11 02:27:10,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:10,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:10,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878034292] [2021-10-11 02:27:10,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:10,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:10,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:10,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:10,242 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2021-10-11 02:27:10,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:10,680 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2021-10-11 02:27:10,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:10,681 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2021-10-11 02:27:10,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:10,684 INFO L225 Difference]: With dead ends: 431 [2021-10-11 02:27:10,684 INFO L226 Difference]: Without dead ends: 287 [2021-10-11 02:27:10,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:10,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-11 02:27:10,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-11 02:27:10,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-10-11 02:27:10,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 479 transitions. [2021-10-11 02:27:10,702 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 479 transitions. Word has length 76 [2021-10-11 02:27:10,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:10,703 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 479 transitions. [2021-10-11 02:27:10,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:10,703 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 479 transitions. [2021-10-11 02:27:10,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-11 02:27:10,706 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:10,706 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2021-10-11 02:27:10,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:27:10,707 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:10,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:10,707 INFO L82 PathProgramCache]: Analyzing trace with hash -202238783, now seen corresponding path program 1 times [2021-10-11 02:27:10,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:10,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489478392] [2021-10-11 02:27:10,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:10,758 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-11 02:27:10,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489478392] [2021-10-11 02:27:10,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:10,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:10,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249739048] [2021-10-11 02:27:10,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:10,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:10,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:10,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:10,772 INFO L87 Difference]: Start difference. First operand 287 states and 479 transitions. Second operand 3 states. [2021-10-11 02:27:11,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:11,195 INFO L93 Difference]: Finished difference Result 857 states and 1434 transitions. [2021-10-11 02:27:11,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:11,200 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2021-10-11 02:27:11,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:11,203 INFO L225 Difference]: With dead ends: 857 [2021-10-11 02:27:11,203 INFO L226 Difference]: Without dead ends: 571 [2021-10-11 02:27:11,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:11,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-10-11 02:27:11,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2021-10-11 02:27:11,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2021-10-11 02:27:11,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 884 transitions. [2021-10-11 02:27:11,229 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 884 transitions. Word has length 86 [2021-10-11 02:27:11,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:11,229 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 884 transitions. [2021-10-11 02:27:11,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:11,229 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 884 transitions. [2021-10-11 02:27:11,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-11 02:27:11,234 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:11,234 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:11,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:27:11,235 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:11,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:11,235 INFO L82 PathProgramCache]: Analyzing trace with hash 289048459, now seen corresponding path program 1 times [2021-10-11 02:27:11,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:11,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695343800] [2021-10-11 02:27:11,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:11,296 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-11 02:27:11,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695343800] [2021-10-11 02:27:11,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:11,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:11,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505174146] [2021-10-11 02:27:11,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:11,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:11,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:11,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:11,298 INFO L87 Difference]: Start difference. First operand 571 states and 884 transitions. Second operand 3 states. [2021-10-11 02:27:11,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:11,819 INFO L93 Difference]: Finished difference Result 1567 states and 2441 transitions. [2021-10-11 02:27:11,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:11,820 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2021-10-11 02:27:11,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:11,833 INFO L225 Difference]: With dead ends: 1567 [2021-10-11 02:27:11,834 INFO L226 Difference]: Without dead ends: 997 [2021-10-11 02:27:11,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:11,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-11 02:27:11,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 642. [2021-10-11 02:27:11,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2021-10-11 02:27:11,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 949 transitions. [2021-10-11 02:27:11,880 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 949 transitions. Word has length 91 [2021-10-11 02:27:11,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:11,880 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 949 transitions. [2021-10-11 02:27:11,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:11,881 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 949 transitions. [2021-10-11 02:27:11,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-10-11 02:27:11,887 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:11,887 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:11,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:27:11,888 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:11,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:11,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1324170643, now seen corresponding path program 1 times [2021-10-11 02:27:11,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:11,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734142929] [2021-10-11 02:27:11,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:11,982 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:11,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734142929] [2021-10-11 02:27:11,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:11,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:11,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683192757] [2021-10-11 02:27:11,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:11,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:11,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:11,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:11,988 INFO L87 Difference]: Start difference. First operand 642 states and 949 transitions. Second operand 3 states. [2021-10-11 02:27:12,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:12,516 INFO L93 Difference]: Finished difference Result 1922 states and 2844 transitions. [2021-10-11 02:27:12,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:12,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2021-10-11 02:27:12,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:12,534 INFO L225 Difference]: With dead ends: 1922 [2021-10-11 02:27:12,534 INFO L226 Difference]: Without dead ends: 1281 [2021-10-11 02:27:12,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:12,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-10-11 02:27:12,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1139. [2021-10-11 02:27:12,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2021-10-11 02:27:12,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1608 transitions. [2021-10-11 02:27:12,630 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1608 transitions. Word has length 94 [2021-10-11 02:27:12,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:12,632 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1608 transitions. [2021-10-11 02:27:12,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:12,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1608 transitions. [2021-10-11 02:27:12,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-11 02:27:12,637 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:12,638 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:12,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:27:12,639 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:12,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:12,639 INFO L82 PathProgramCache]: Analyzing trace with hash -720011895, now seen corresponding path program 1 times [2021-10-11 02:27:12,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:12,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641182142] [2021-10-11 02:27:12,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:12,735 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-11 02:27:12,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641182142] [2021-10-11 02:27:12,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:12,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:12,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117776202] [2021-10-11 02:27:12,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:12,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:12,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:12,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:12,738 INFO L87 Difference]: Start difference. First operand 1139 states and 1608 transitions. Second operand 3 states. [2021-10-11 02:27:13,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:13,158 INFO L93 Difference]: Finished difference Result 2419 states and 3375 transitions. [2021-10-11 02:27:13,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:13,160 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2021-10-11 02:27:13,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:13,167 INFO L225 Difference]: With dead ends: 2419 [2021-10-11 02:27:13,167 INFO L226 Difference]: Without dead ends: 1210 [2021-10-11 02:27:13,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:13,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-11 02:27:13,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1210. [2021-10-11 02:27:13,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2021-10-11 02:27:13,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1473 transitions. [2021-10-11 02:27:13,203 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1473 transitions. Word has length 98 [2021-10-11 02:27:13,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:13,204 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1473 transitions. [2021-10-11 02:27:13,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:13,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1473 transitions. [2021-10-11 02:27:13,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-11 02:27:13,207 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:13,207 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:13,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:27:13,208 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:13,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:13,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1815696175, now seen corresponding path program 1 times [2021-10-11 02:27:13,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:13,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089841992] [2021-10-11 02:27:13,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:13,295 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-11 02:27:13,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089841992] [2021-10-11 02:27:13,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:13,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:13,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282034867] [2021-10-11 02:27:13,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:13,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:13,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:13,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:13,297 INFO L87 Difference]: Start difference. First operand 1210 states and 1473 transitions. Second operand 3 states. [2021-10-11 02:27:13,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:13,626 INFO L93 Difference]: Finished difference Result 2348 states and 2867 transitions. [2021-10-11 02:27:13,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:13,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2021-10-11 02:27:13,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:13,634 INFO L225 Difference]: With dead ends: 2348 [2021-10-11 02:27:13,634 INFO L226 Difference]: Without dead ends: 1210 [2021-10-11 02:27:13,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:13,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-11 02:27:13,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1139. [2021-10-11 02:27:13,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2021-10-11 02:27:13,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1353 transitions. [2021-10-11 02:27:13,665 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1353 transitions. Word has length 102 [2021-10-11 02:27:13,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:13,665 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1353 transitions. [2021-10-11 02:27:13,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:13,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1353 transitions. [2021-10-11 02:27:13,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-11 02:27:13,669 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:13,669 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:13,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:27:13,669 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:13,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:13,670 INFO L82 PathProgramCache]: Analyzing trace with hash -785769163, now seen corresponding path program 1 times [2021-10-11 02:27:13,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:13,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88589112] [2021-10-11 02:27:13,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-11 02:27:13,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88589112] [2021-10-11 02:27:13,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:13,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:13,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279931072] [2021-10-11 02:27:13,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:13,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:13,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:13,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:13,721 INFO L87 Difference]: Start difference. First operand 1139 states and 1353 transitions. Second operand 3 states. [2021-10-11 02:27:14,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:14,122 INFO L93 Difference]: Finished difference Result 2703 states and 3256 transitions. [2021-10-11 02:27:14,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:14,123 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2021-10-11 02:27:14,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:14,133 INFO L225 Difference]: With dead ends: 2703 [2021-10-11 02:27:14,133 INFO L226 Difference]: Without dead ends: 1636 [2021-10-11 02:27:14,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:14,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-10-11 02:27:14,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1494. [2021-10-11 02:27:14,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2021-10-11 02:27:14,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1805 transitions. [2021-10-11 02:27:14,177 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1805 transitions. Word has length 111 [2021-10-11 02:27:14,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:14,177 INFO L481 AbstractCegarLoop]: Abstraction has 1494 states and 1805 transitions. [2021-10-11 02:27:14,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:14,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1805 transitions. [2021-10-11 02:27:14,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-10-11 02:27:14,181 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:14,182 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:14,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:27:14,182 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:14,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:14,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1606303230, now seen corresponding path program 1 times [2021-10-11 02:27:14,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:14,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86614053] [2021-10-11 02:27:14,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:14,258 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-10-11 02:27:14,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86614053] [2021-10-11 02:27:14,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:14,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:27:14,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007466469] [2021-10-11 02:27:14,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:14,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:14,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:14,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:14,265 INFO L87 Difference]: Start difference. First operand 1494 states and 1805 transitions. Second operand 3 states. [2021-10-11 02:27:14,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:14,617 INFO L93 Difference]: Finished difference Result 3129 states and 3785 transitions. [2021-10-11 02:27:14,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:14,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2021-10-11 02:27:14,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:14,628 INFO L225 Difference]: With dead ends: 3129 [2021-10-11 02:27:14,628 INFO L226 Difference]: Without dead ends: 1636 [2021-10-11 02:27:14,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:14,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-10-11 02:27:14,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1636. [2021-10-11 02:27:14,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1636 states. [2021-10-11 02:27:14,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 1961 transitions. [2021-10-11 02:27:14,682 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 1961 transitions. Word has length 142 [2021-10-11 02:27:14,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:14,684 INFO L481 AbstractCegarLoop]: Abstraction has 1636 states and 1961 transitions. [2021-10-11 02:27:14,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:14,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 1961 transitions. [2021-10-11 02:27:14,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-10-11 02:27:14,692 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:14,692 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:14,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:27:14,692 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:14,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:14,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1713659578, now seen corresponding path program 1 times [2021-10-11 02:27:14,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:14,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088427449] [2021-10-11 02:27:14,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:14,843 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-10-11 02:27:14,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088427449] [2021-10-11 02:27:14,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:14,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:14,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021658422] [2021-10-11 02:27:14,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:14,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:14,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:14,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:14,846 INFO L87 Difference]: Start difference. First operand 1636 states and 1961 transitions. Second operand 4 states. [2021-10-11 02:27:15,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:15,326 INFO L93 Difference]: Finished difference Result 3271 states and 3933 transitions. [2021-10-11 02:27:15,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:15,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2021-10-11 02:27:15,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:15,338 INFO L225 Difference]: With dead ends: 3271 [2021-10-11 02:27:15,338 INFO L226 Difference]: Without dead ends: 1707 [2021-10-11 02:27:15,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:15,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-10-11 02:27:15,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1636. [2021-10-11 02:27:15,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1636 states. [2021-10-11 02:27:15,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 1941 transitions. [2021-10-11 02:27:15,382 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 1941 transitions. Word has length 146 [2021-10-11 02:27:15,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:15,383 INFO L481 AbstractCegarLoop]: Abstraction has 1636 states and 1941 transitions. [2021-10-11 02:27:15,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:15,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 1941 transitions. [2021-10-11 02:27:15,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-10-11 02:27:15,425 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:15,425 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:15,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:27:15,426 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:15,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:15,426 INFO L82 PathProgramCache]: Analyzing trace with hash -798087413, now seen corresponding path program 1 times [2021-10-11 02:27:15,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:15,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214461628] [2021-10-11 02:27:15,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:15,583 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 125 proven. 11 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-10-11 02:27:15,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214461628] [2021-10-11 02:27:15,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718238465] [2021-10-11 02:27:15,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ec38de-8ff6-4fe2-bd98-a51eb220f15e/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:15,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:27:15,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:15,968 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-10-11 02:27:15,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:16,203 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-10-11 02:27:16,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:27:16,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-11 02:27:16,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391256386] [2021-10-11 02:27:16,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:16,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:16,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:16,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:16,222 INFO L87 Difference]: Start difference. First operand 1636 states and 1941 transitions. Second operand 3 states. [2021-10-11 02:27:16,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:16,589 INFO L93 Difference]: Finished difference Result 2772 states and 3304 transitions. [2021-10-11 02:27:16,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:16,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2021-10-11 02:27:16,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:16,590 INFO L225 Difference]: With dead ends: 2772 [2021-10-11 02:27:16,590 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:27:16,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:16,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:27:16,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:27:16,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:27:16,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:27:16,595 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 163 [2021-10-11 02:27:16,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:16,595 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:27:16,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:16,595 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:27:16,595 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:27:16,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-11 02:27:16,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:27:16,901 INFO L262 CegarLoopResult]: For program point L465(line 465) no Hoare annotation was computed. [2021-10-11 02:27:16,901 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:27:16,901 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:27:16,902 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:27:16,902 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:27:16,902 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:27:16,902 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:27:16,902 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:27:16,902 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:27:16,902 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:27:16,903 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:27:16,903 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:27:16,903 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:27:16,903 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:27:16,904 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:27:16,904 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:27:16,904 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:27:16,904 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:27:16,904 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:27:16,905 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:27:16,905 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:27:16,909 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:27:16,909 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:27:16,909 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:27:16,909 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:27:16,910 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:27:16,911 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:27:16,911 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:27:16,911 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:27:16,911 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:27:16,911 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:27:16,911 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:27:16,912 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:27:16,912 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:27:16,912 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:27:16,912 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:27:16,914 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:27:16,915 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:27:16,915 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:27:16,915 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:27:16,916 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:27:16,916 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a7~0 1)) (.cse1 (<= ~a8~0 13))) (or (and .cse0 (<= ~a16~0 5)) (and (= ~a21~0 1) (<= ~a16~0 4) (= ~a20~0 1) .cse1) (<= ~a7~0 0) (and .cse0 .cse1))) [2021-10-11 02:27:16,916 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:27:16,916 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:27:16,917 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:27:16,917 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:27:16,917 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:27:16,917 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:27:16,917 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:27:16,917 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:27:16,917 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:27:16,919 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:27:16,919 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:27:16,919 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:27:16,919 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:27:16,919 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:27:16,919 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:27:16,919 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:27:16,920 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:27:16,920 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:27:16,920 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:27:16,920 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:27:16,920 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:27:16,920 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:27:16,921 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:27:16,922 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a7~0 1)) (.cse1 (<= ~a8~0 13))) (or (and .cse0 (<= ~a16~0 5)) (and (= ~a21~0 1) (<= ~a16~0 4) (= ~a20~0 1) .cse1) (<= ~a7~0 0) (and .cse0 .cse1))) [2021-10-11 02:27:16,922 INFO L262 CegarLoopResult]: For program point L461-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:27:16,922 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:27:16,922 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 465) no Hoare annotation was computed. [2021-10-11 02:27:16,923 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:27:16,923 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:27:16,923 INFO L262 CegarLoopResult]: For program point L464-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:27:16,923 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:27:16,923 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:27:16,923 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:27:16,923 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:27:16,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:16 BoogieIcfgContainer [2021-10-11 02:27:16,950 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:16,950 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:16,950 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:16,950 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:16,951 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:08" (3/4) ... [2021-10-11 02:27:16,954 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:27:16,984 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2021-10-11 02:27:16,985 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:27:16,987 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:27:16,989 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:27:17,176 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12ec38de-8ff6-4fe2-bd98-a51eb220f15e/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:27:17,177 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:17,179 INFO L168 Benchmark]: Toolchain (without parser) took 11791.58 ms. Allocated memory was 100.7 MB in the beginning and 260.0 MB in the end (delta: 159.4 MB). Free memory was 67.1 MB in the beginning and 87.4 MB in the end (delta: -20.3 MB). Peak memory consumption was 138.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:17,180 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 100.7 MB. Free memory is still 54.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:17,181 INFO L168 Benchmark]: CACSL2BoogieTranslator took 854.01 ms. Allocated memory was 100.7 MB in the beginning and 132.1 MB in the end (delta: 31.5 MB). Free memory was 66.9 MB in the beginning and 91.0 MB in the end (delta: -24.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:17,181 INFO L168 Benchmark]: Boogie Procedure Inliner took 106.13 ms. Allocated memory is still 132.1 MB. Free memory was 91.0 MB in the beginning and 85.5 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:17,181 INFO L168 Benchmark]: Boogie Preprocessor took 70.95 ms. Allocated memory is still 132.1 MB. Free memory was 85.5 MB in the beginning and 80.8 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:17,182 INFO L168 Benchmark]: RCFGBuilder took 2345.40 ms. Allocated memory was 132.1 MB in the beginning and 167.8 MB in the end (delta: 35.7 MB). Free memory was 80.8 MB in the beginning and 116.3 MB in the end (delta: -35.5 MB). Peak memory consumption was 45.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:17,182 INFO L168 Benchmark]: TraceAbstraction took 8178.28 ms. Allocated memory was 167.8 MB in the beginning and 260.0 MB in the end (delta: 92.3 MB). Free memory was 116.3 MB in the beginning and 103.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 106.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:17,183 INFO L168 Benchmark]: Witness Printer took 226.83 ms. Allocated memory is still 260.0 MB. Free memory was 103.2 MB in the beginning and 87.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:17,185 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 100.7 MB. Free memory is still 54.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 854.01 ms. Allocated memory was 100.7 MB in the beginning and 132.1 MB in the end (delta: 31.5 MB). Free memory was 66.9 MB in the beginning and 91.0 MB in the end (delta: -24.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 106.13 ms. Allocated memory is still 132.1 MB. Free memory was 91.0 MB in the beginning and 85.5 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.95 ms. Allocated memory is still 132.1 MB. Free memory was 85.5 MB in the beginning and 80.8 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2345.40 ms. Allocated memory was 132.1 MB in the beginning and 167.8 MB in the end (delta: 35.7 MB). Free memory was 80.8 MB in the beginning and 116.3 MB in the end (delta: -35.5 MB). Peak memory consumption was 45.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8178.28 ms. Allocated memory was 167.8 MB in the beginning and 260.0 MB in the end (delta: 92.3 MB). Free memory was 116.3 MB in the beginning and 103.2 MB in the end (delta: 13.1 MB). Peak memory consumption was 106.4 MB. Max. memory is 16.1 GB. * Witness Printer took 226.83 ms. Allocated memory is still 260.0 MB. Free memory was 103.2 MB in the beginning and 87.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 465]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((a7 == 1 && a16 <= 5) || (((a21 == 1 && a16 <= 4) && a20 == 1) && a8 <= 13)) || a7 <= 0) || (a7 == 1 && a8 <= 13) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((a7 == 1 && a16 <= 5) || (((a21 == 1 && a16 <= 4) && a20 == 1) && a8 <= 13)) || a7 <= 0) || (a7 == 1 && a8 <= 13) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.9s, OverallIterations: 11, TraceHistogramMax: 6, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 622 SDtfs, 814 SDslu, 46 SDs, 0 SdLazy, 2299 SolverSat, 543 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 352 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1636occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 781 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 45 NumberOfFragments, 63 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1422 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 1343 NumberOfCodeBlocks, 1343 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1493 ConstructedInterpolants, 0 QuantifiedInterpolants, 343999 SizeOfPredicates, 0 NumberOfNonLiveVariables, 418 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 13 InterpolantComputations, 12 PerfectInterpolantSequences, 1089/1100 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...