./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label24.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d18d367d-692e-4ac2-ae1b-d1f74384ac79/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d18d367d-692e-4ac2-ae1b-d1f74384ac79/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d18d367d-692e-4ac2-ae1b-d1f74384ac79/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d18d367d-692e-4ac2-ae1b-d1f74384ac79/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label24.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d18d367d-692e-4ac2-ae1b-d1f74384ac79/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d18d367d-692e-4ac2-ae1b-d1f74384ac79/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2a6634174770c2d78435b26741915661650ffd8b51b8148a319e19b0e5237d4f ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:51:32,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:51:32,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:51:32,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:51:32,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:51:32,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:51:32,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:51:32,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:51:32,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:51:32,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:51:32,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:51:32,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:51:32,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:51:32,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:51:32,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:51:32,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:51:32,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:51:32,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:51:32,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:51:32,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:51:32,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:51:32,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:51:32,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:51:32,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:51:32,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:51:32,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:51:32,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:51:32,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:51:32,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:51:32,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:51:32,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:51:32,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:51:32,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:51:32,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:51:32,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:51:32,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:51:32,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:51:32,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:51:32,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:51:32,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:51:32,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:51:32,884 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d18d367d-692e-4ac2-ae1b-d1f74384ac79/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:51:32,912 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:51:32,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:51:32,913 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:51:32,913 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:51:32,914 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:51:32,914 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:51:32,915 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:51:32,915 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:51:32,915 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:51:32,916 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:51:32,916 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:51:32,917 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:51:32,917 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:51:32,917 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:51:32,918 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:51:32,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:51:32,919 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:51:32,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:51:32,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:51:32,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:51:32,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:51:32,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:51:32,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:51:32,922 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:51:32,922 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:51:32,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:51:32,923 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:51:32,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:51:32,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:51:32,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:51:32,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:51:32,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:51:32,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:51:32,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:51:32,926 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:51:32,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:51:32,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:51:32,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:51:32,927 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:51:32,927 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_d18d367d-692e-4ac2-ae1b-d1f74384ac79/bin/utaipan-SDwSMHVbGG/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d18d367d-692e-4ac2-ae1b-d1f74384ac79/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a6634174770c2d78435b26741915661650ffd8b51b8148a319e19b0e5237d4f [2021-10-29 04:51:33,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:51:33,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:51:33,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:51:33,238 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:51:33,239 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:51:33,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d18d367d-692e-4ac2-ae1b-d1f74384ac79/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/eca-rers2012/Problem02_label24.c [2021-10-29 04:51:33,317 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d18d367d-692e-4ac2-ae1b-d1f74384ac79/bin/utaipan-SDwSMHVbGG/data/c5e70f273/5b7eea36b64f4a0695fbe0cf3170c821/FLAGc4da171f8 [2021-10-29 04:51:33,915 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:51:33,916 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d18d367d-692e-4ac2-ae1b-d1f74384ac79/sv-benchmarks/c/eca-rers2012/Problem02_label24.c [2021-10-29 04:51:33,952 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d18d367d-692e-4ac2-ae1b-d1f74384ac79/bin/utaipan-SDwSMHVbGG/data/c5e70f273/5b7eea36b64f4a0695fbe0cf3170c821/FLAGc4da171f8 [2021-10-29 04:51:34,174 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d18d367d-692e-4ac2-ae1b-d1f74384ac79/bin/utaipan-SDwSMHVbGG/data/c5e70f273/5b7eea36b64f4a0695fbe0cf3170c821 [2021-10-29 04:51:34,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:51:34,179 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:51:34,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:51:34,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:51:34,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:51:34,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:51:34" (1/1) ... [2021-10-29 04:51:34,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60456321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:34, skipping insertion in model container [2021-10-29 04:51:34,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:51:34" (1/1) ... [2021-10-29 04:51:34,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:51:34,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:51:34,677 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d18d367d-692e-4ac2-ae1b-d1f74384ac79/sv-benchmarks/c/eca-rers2012/Problem02_label24.c[18375,18388] [2021-10-29 04:51:34,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:51:34,707 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:51:34,813 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d18d367d-692e-4ac2-ae1b-d1f74384ac79/sv-benchmarks/c/eca-rers2012/Problem02_label24.c[18375,18388] [2021-10-29 04:51:34,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:51:34,846 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:51:34,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:34 WrapperNode [2021-10-29 04:51:34,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:51:34,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:51:34,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:51:34,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:51:34,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:34" (1/1) ... [2021-10-29 04:51:34,881 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:34" (1/1) ... [2021-10-29 04:51:34,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:51:34,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:51:34,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:51:34,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:51:34,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:34" (1/1) ... [2021-10-29 04:51:34,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:34" (1/1) ... [2021-10-29 04:51:34,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:34" (1/1) ... [2021-10-29 04:51:34,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:34" (1/1) ... [2021-10-29 04:51:34,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:34" (1/1) ... [2021-10-29 04:51:35,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:34" (1/1) ... [2021-10-29 04:51:35,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:34" (1/1) ... [2021-10-29 04:51:35,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:51:35,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:51:35,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:51:35,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:51:35,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:34" (1/1) ... [2021-10-29 04:51:35,036 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:51:35,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d18d367d-692e-4ac2-ae1b-d1f74384ac79/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:51:35,072 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d18d367d-692e-4ac2-ae1b-d1f74384ac79/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:51:35,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d18d367d-692e-4ac2-ae1b-d1f74384ac79/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:51:35,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:51:35,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:51:35,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:51:35,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:51:37,185 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:51:37,186 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-29 04:51:37,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:51:37 BoogieIcfgContainer [2021-10-29 04:51:37,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:51:37,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:51:37,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:51:37,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:51:37,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:51:34" (1/3) ... [2021-10-29 04:51:37,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d1d75c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:51:37, skipping insertion in model container [2021-10-29 04:51:37,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:51:34" (2/3) ... [2021-10-29 04:51:37,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d1d75c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:51:37, skipping insertion in model container [2021-10-29 04:51:37,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:51:37" (3/3) ... [2021-10-29 04:51:37,204 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label24.c [2021-10-29 04:51:37,217 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:51:37,217 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 04:51:37,269 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:51:37,277 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 04:51:37,277 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 04:51:37,297 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:37,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-29 04:51:37,308 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:51:37,308 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:51:37,309 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:51:37,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:51:37,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1814579991, now seen corresponding path program 1 times [2021-10-29 04:51:37,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:51:37,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583982088] [2021-10-29 04:51:37,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:51:37,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:51:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:51:37,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:51:37,847 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:51:37,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583982088] [2021-10-29 04:51:37,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583982088] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:51:37,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:51:37,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:51:37,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761089090] [2021-10-29 04:51:37,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:51:37,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:51:37,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:51:37,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:51:37,889 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:38,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:51:38,415 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-29 04:51:38,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:51:38,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-29 04:51:38,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:51:38,444 INFO L225 Difference]: With dead ends: 251 [2021-10-29 04:51:38,445 INFO L226 Difference]: Without dead ends: 163 [2021-10-29 04:51:38,450 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:51:38,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-29 04:51:38,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-29 04:51:38,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.9320987654320987) internal successors, (313), 162 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:38,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2021-10-29 04:51:38,544 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2021-10-29 04:51:38,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:51:38,546 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2021-10-29 04:51:38,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:38,547 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2021-10-29 04:51:38,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-29 04:51:38,554 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:51:38,555 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:51:38,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 04:51:38,556 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:51:38,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:51:38,560 INFO L85 PathProgramCache]: Analyzing trace with hash -329017879, now seen corresponding path program 1 times [2021-10-29 04:51:38,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:51:38,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231284030] [2021-10-29 04:51:38,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:51:38,562 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:51:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:51:38,689 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 04:51:38,690 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:51:38,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231284030] [2021-10-29 04:51:38,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231284030] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:51:38,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:51:38,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:51:38,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244671313] [2021-10-29 04:51:38,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:51:38,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:51:38,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:51:38,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:51:38,703 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:39,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:51:39,206 INFO L93 Difference]: Finished difference Result 487 states and 937 transitions. [2021-10-29 04:51:39,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:51:39,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-10-29 04:51:39,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:51:39,211 INFO L225 Difference]: With dead ends: 487 [2021-10-29 04:51:39,212 INFO L226 Difference]: Without dead ends: 325 [2021-10-29 04:51:39,214 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:51:39,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-10-29 04:51:39,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2021-10-29 04:51:39,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.84472049689441) internal successors, (594), 322 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:39,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 594 transitions. [2021-10-29 04:51:39,259 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 594 transitions. Word has length 91 [2021-10-29 04:51:39,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:51:39,262 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 594 transitions. [2021-10-29 04:51:39,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:39,263 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 594 transitions. [2021-10-29 04:51:39,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-29 04:51:39,275 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:51:39,276 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:51:39,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 04:51:39,277 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:51:39,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:51:39,279 INFO L85 PathProgramCache]: Analyzing trace with hash -87620780, now seen corresponding path program 1 times [2021-10-29 04:51:39,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:51:39,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842109192] [2021-10-29 04:51:39,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:51:39,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:51:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:51:39,407 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-29 04:51:39,408 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:51:39,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842109192] [2021-10-29 04:51:39,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842109192] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:51:39,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:51:39,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:51:39,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446032285] [2021-10-29 04:51:39,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:51:39,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:51:39,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:51:39,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:51:39,414 INFO L87 Difference]: Start difference. First operand 323 states and 594 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:39,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:51:39,801 INFO L93 Difference]: Finished difference Result 885 states and 1638 transitions. [2021-10-29 04:51:39,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:51:39,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-29 04:51:39,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:51:39,806 INFO L225 Difference]: With dead ends: 885 [2021-10-29 04:51:39,806 INFO L226 Difference]: Without dead ends: 563 [2021-10-29 04:51:39,808 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:51:39,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-10-29 04:51:39,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2021-10-29 04:51:39,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.616182572614108) internal successors, (779), 482 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:39,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 779 transitions. [2021-10-29 04:51:39,835 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 779 transitions. Word has length 95 [2021-10-29 04:51:39,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:51:39,836 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 779 transitions. [2021-10-29 04:51:39,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:39,836 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 779 transitions. [2021-10-29 04:51:39,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-29 04:51:39,838 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:51:39,839 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:51:39,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 04:51:39,839 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:51:39,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:51:39,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1540150481, now seen corresponding path program 1 times [2021-10-29 04:51:39,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:51:39,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060988615] [2021-10-29 04:51:39,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:51:39,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:51:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:51:39,909 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-29 04:51:39,910 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:51:39,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060988615] [2021-10-29 04:51:39,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060988615] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:51:39,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:51:39,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:51:39,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807376837] [2021-10-29 04:51:39,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:51:39,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:51:39,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:51:39,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:51:39,913 INFO L87 Difference]: Start difference. First operand 483 states and 779 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:40,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:51:40,323 INFO L93 Difference]: Finished difference Result 1205 states and 2008 transitions. [2021-10-29 04:51:40,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:51:40,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-29 04:51:40,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:51:40,327 INFO L225 Difference]: With dead ends: 1205 [2021-10-29 04:51:40,327 INFO L226 Difference]: Without dead ends: 723 [2021-10-29 04:51:40,329 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:51:40,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-10-29 04:51:40,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 643. [2021-10-29 04:51:40,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 642 states have (on average 1.5093457943925233) internal successors, (969), 642 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:40,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 969 transitions. [2021-10-29 04:51:40,352 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 969 transitions. Word has length 100 [2021-10-29 04:51:40,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:51:40,352 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 969 transitions. [2021-10-29 04:51:40,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:40,354 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 969 transitions. [2021-10-29 04:51:40,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-29 04:51:40,358 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:51:40,358 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:51:40,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 04:51:40,359 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:51:40,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:51:40,359 INFO L85 PathProgramCache]: Analyzing trace with hash -163973979, now seen corresponding path program 1 times [2021-10-29 04:51:40,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:51:40,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531684417] [2021-10-29 04:51:40,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:51:40,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:51:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:51:40,440 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-29 04:51:40,440 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:51:40,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531684417] [2021-10-29 04:51:40,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531684417] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:51:40,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:51:40,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:51:40,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689941235] [2021-10-29 04:51:40,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:51:40,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:51:40,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:51:40,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:51:40,443 INFO L87 Difference]: Start difference. First operand 643 states and 969 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:40,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:51:40,793 INFO L93 Difference]: Finished difference Result 1765 states and 2719 transitions. [2021-10-29 04:51:40,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:51:40,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-10-29 04:51:40,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:51:40,801 INFO L225 Difference]: With dead ends: 1765 [2021-10-29 04:51:40,801 INFO L226 Difference]: Without dead ends: 1123 [2021-10-29 04:51:40,802 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:51:40,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2021-10-29 04:51:40,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2021-10-29 04:51:40,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.4536541889483066) internal successors, (1631), 1122 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:40,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1631 transitions. [2021-10-29 04:51:40,840 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1631 transitions. Word has length 101 [2021-10-29 04:51:40,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:51:40,840 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1631 transitions. [2021-10-29 04:51:40,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:40,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1631 transitions. [2021-10-29 04:51:40,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-29 04:51:40,844 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:51:40,844 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:51:40,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 04:51:40,845 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:51:40,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:51:40,846 INFO L85 PathProgramCache]: Analyzing trace with hash -742241849, now seen corresponding path program 1 times [2021-10-29 04:51:40,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:51:40,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427922871] [2021-10-29 04:51:40,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:51:40,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:51:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:51:40,888 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-29 04:51:40,889 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:51:40,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427922871] [2021-10-29 04:51:40,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427922871] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:51:40,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:51:40,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:51:40,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025727198] [2021-10-29 04:51:40,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:51:40,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:51:40,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:51:40,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:51:40,892 INFO L87 Difference]: Start difference. First operand 1123 states and 1631 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:41,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:51:41,255 INFO L93 Difference]: Finished difference Result 2645 states and 3802 transitions. [2021-10-29 04:51:41,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:51:41,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-10-29 04:51:41,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:51:41,265 INFO L225 Difference]: With dead ends: 2645 [2021-10-29 04:51:41,266 INFO L226 Difference]: Without dead ends: 1523 [2021-10-29 04:51:41,268 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:51:41,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2021-10-29 04:51:41,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1443. [2021-10-29 04:51:41,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1442 states have (on average 1.3703190013869626) internal successors, (1976), 1442 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:41,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1976 transitions. [2021-10-29 04:51:41,320 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1976 transitions. Word has length 104 [2021-10-29 04:51:41,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:51:41,320 INFO L470 AbstractCegarLoop]: Abstraction has 1443 states and 1976 transitions. [2021-10-29 04:51:41,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:41,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1976 transitions. [2021-10-29 04:51:41,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-10-29 04:51:41,328 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:51:41,328 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:51:41,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-29 04:51:41,329 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:51:41,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:51:41,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1486178021, now seen corresponding path program 1 times [2021-10-29 04:51:41,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:51:41,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450030867] [2021-10-29 04:51:41,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:51:41,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:51:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:51:41,420 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-29 04:51:41,421 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:51:41,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450030867] [2021-10-29 04:51:41,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450030867] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:51:41,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:51:41,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:51:41,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336468267] [2021-10-29 04:51:41,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:51:41,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:51:41,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:51:41,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:51:41,426 INFO L87 Difference]: Start difference. First operand 1443 states and 1976 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:41,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:51:41,773 INFO L93 Difference]: Finished difference Result 2885 states and 3951 transitions. [2021-10-29 04:51:41,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:51:41,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2021-10-29 04:51:41,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:51:41,782 INFO L225 Difference]: With dead ends: 2885 [2021-10-29 04:51:41,782 INFO L226 Difference]: Without dead ends: 1443 [2021-10-29 04:51:41,784 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:51:41,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2021-10-29 04:51:41,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1443. [2021-10-29 04:51:41,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1442 states have (on average 1.3044382801664356) internal successors, (1881), 1442 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:41,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1881 transitions. [2021-10-29 04:51:41,826 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1881 transitions. Word has length 135 [2021-10-29 04:51:41,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:51:41,826 INFO L470 AbstractCegarLoop]: Abstraction has 1443 states and 1881 transitions. [2021-10-29 04:51:41,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:41,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1881 transitions. [2021-10-29 04:51:41,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-10-29 04:51:41,831 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:51:41,831 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:51:41,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-29 04:51:41,832 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:51:41,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:51:41,832 INFO L85 PathProgramCache]: Analyzing trace with hash 497086565, now seen corresponding path program 1 times [2021-10-29 04:51:41,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:51:41,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301568241] [2021-10-29 04:51:41,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:51:41,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:51:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:51:41,904 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-29 04:51:41,904 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:51:41,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301568241] [2021-10-29 04:51:41,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301568241] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:51:41,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:51:41,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:51:41,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324286754] [2021-10-29 04:51:41,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:51:41,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:51:41,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:51:41,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:51:41,907 INFO L87 Difference]: Start difference. First operand 1443 states and 1881 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:42,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:51:42,292 INFO L93 Difference]: Finished difference Result 3205 states and 4261 transitions. [2021-10-29 04:51:42,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:51:42,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-10-29 04:51:42,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:51:42,303 INFO L225 Difference]: With dead ends: 3205 [2021-10-29 04:51:42,304 INFO L226 Difference]: Without dead ends: 1763 [2021-10-29 04:51:42,306 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:51:42,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2021-10-29 04:51:42,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1683. [2021-10-29 04:51:42,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 1.2841854934601664) internal successors, (2160), 1682 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:42,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2160 transitions. [2021-10-29 04:51:42,359 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2160 transitions. Word has length 139 [2021-10-29 04:51:42,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:51:42,359 INFO L470 AbstractCegarLoop]: Abstraction has 1683 states and 2160 transitions. [2021-10-29 04:51:42,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:42,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2160 transitions. [2021-10-29 04:51:42,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-10-29 04:51:42,365 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:51:42,365 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-29 04:51:42,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-29 04:51:42,366 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:51:42,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:51:42,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1123873355, now seen corresponding path program 1 times [2021-10-29 04:51:42,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:51:42,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334076354] [2021-10-29 04:51:42,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:51:42,367 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:51:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:51:42,446 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 04:51:42,446 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:51:42,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334076354] [2021-10-29 04:51:42,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334076354] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:51:42,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:51:42,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 04:51:42,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806241832] [2021-10-29 04:51:42,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:51:42,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:51:42,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:51:42,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:51:42,449 INFO L87 Difference]: Start difference. First operand 1683 states and 2160 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:42,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:51:42,845 INFO L93 Difference]: Finished difference Result 3845 states and 5034 transitions. [2021-10-29 04:51:42,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:51:42,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2021-10-29 04:51:42,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:51:42,859 INFO L225 Difference]: With dead ends: 3845 [2021-10-29 04:51:42,859 INFO L226 Difference]: Without dead ends: 2163 [2021-10-29 04:51:42,862 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:51:42,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2021-10-29 04:51:42,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 2163. [2021-10-29 04:51:42,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2163 states, 2162 states have (on average 1.2719703977798336) internal successors, (2750), 2162 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:42,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 2750 transitions. [2021-10-29 04:51:42,949 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 2750 transitions. Word has length 166 [2021-10-29 04:51:42,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:51:42,950 INFO L470 AbstractCegarLoop]: Abstraction has 2163 states and 2750 transitions. [2021-10-29 04:51:42,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:42,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 2750 transitions. [2021-10-29 04:51:42,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-10-29 04:51:42,956 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:51:42,956 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-29 04:51:42,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-29 04:51:42,957 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:51:42,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:51:42,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1505145455, now seen corresponding path program 1 times [2021-10-29 04:51:42,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:51:42,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787798810] [2021-10-29 04:51:42,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:51:42,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:51:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:51:43,020 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-29 04:51:43,020 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:51:43,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787798810] [2021-10-29 04:51:43,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787798810] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:51:43,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:51:43,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 04:51:43,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876113864] [2021-10-29 04:51:43,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 04:51:43,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:51:43,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 04:51:43,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:51:43,024 INFO L87 Difference]: Start difference. First operand 2163 states and 2750 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:43,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:51:43,239 INFO L93 Difference]: Finished difference Result 3763 states and 4780 transitions. [2021-10-29 04:51:43,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 04:51:43,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2021-10-29 04:51:43,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:51:43,241 INFO L225 Difference]: With dead ends: 3763 [2021-10-29 04:51:43,241 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 04:51:43,245 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 04:51:43,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 04:51:43,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 04:51:43,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:43,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 04:51:43,246 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 172 [2021-10-29 04:51:43,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:51:43,247 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 04:51:43,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:51:43,247 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 04:51:43,247 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 04:51:43,250 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:51:43,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-29 04:51:43,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 04:51:43,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:51:43,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:51:43,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 04:51:43,430 INFO L857 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-29 04:51:43,430 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-29 04:51:43,431 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-29 04:51:43,431 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-29 04:51:43,431 INFO L857 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-29 04:51:43,431 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-29 04:51:43,431 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-29 04:51:43,431 INFO L857 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-29 04:51:43,431 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-29 04:51:43,431 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-29 04:51:43,431 INFO L857 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-29 04:51:43,432 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-29 04:51:43,432 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-29 04:51:43,432 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-29 04:51:43,432 INFO L857 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-29 04:51:43,432 INFO L857 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-29 04:51:43,432 INFO L857 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-29 04:51:43,432 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-29 04:51:43,432 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-29 04:51:43,433 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-29 04:51:43,433 INFO L857 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-29 04:51:43,433 INFO L857 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-29 04:51:43,433 INFO L857 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-29 04:51:43,433 INFO L857 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-29 04:51:43,433 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-29 04:51:43,433 INFO L857 garLoopResultBuilder]: For program point L520-1(lines 39 608) no Hoare annotation was computed. [2021-10-29 04:51:43,433 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-29 04:51:43,433 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 04:51:43,434 INFO L857 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-29 04:51:43,434 INFO L857 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-29 04:51:43,434 INFO L857 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-29 04:51:43,434 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-29 04:51:43,434 INFO L857 garLoopResultBuilder]: For program point L523-1(lines 39 608) no Hoare annotation was computed. [2021-10-29 04:51:43,434 INFO L857 garLoopResultBuilder]: For program point L524(line 524) no Hoare annotation was computed. [2021-10-29 04:51:43,434 INFO L857 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-29 04:51:43,434 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-29 04:51:43,434 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-29 04:51:43,435 INFO L857 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-29 04:51:43,436 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-29 04:51:43,436 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 524) no Hoare annotation was computed. [2021-10-29 04:51:43,436 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-29 04:51:43,436 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-29 04:51:43,436 INFO L857 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-29 04:51:43,437 INFO L857 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-29 04:51:43,437 INFO L857 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-29 04:51:43,437 INFO L857 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-29 04:51:43,437 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-29 04:51:43,437 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-29 04:51:43,437 INFO L857 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-29 04:51:43,438 INFO L857 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-29 04:51:43,438 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-29 04:51:43,438 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-29 04:51:43,438 INFO L857 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-29 04:51:43,438 INFO L857 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-29 04:51:43,438 INFO L857 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-29 04:51:43,439 INFO L857 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-29 04:51:43,439 INFO L853 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse1 (<= 8 ~a17~0)) (.cse4 (<= ~a28~0 10)) (.cse0 (= ~a25~0 1)) (.cse2 (<= ~a17~0 8)) (.cse3 (= ~a19~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and (<= 10 ~a28~0) .cse2 .cse4) (and .cse0 .cse2 .cse4) (and .cse1 .cse2 .cse4) (and .cse0 (= ~a11~0 0) .cse2 .cse3))) [2021-10-29 04:51:43,439 INFO L857 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-29 04:51:43,439 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-29 04:51:43,440 INFO L860 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-29 04:51:43,440 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-29 04:51:43,440 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-29 04:51:43,440 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-29 04:51:43,440 INFO L857 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-29 04:51:43,441 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-29 04:51:43,441 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 04:51:43,441 INFO L857 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-29 04:51:43,441 INFO L857 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-29 04:51:43,441 INFO L853 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse1 (<= 8 ~a17~0)) (.cse4 (<= ~a28~0 10)) (.cse0 (= ~a25~0 1)) (.cse2 (<= ~a17~0 8)) (.cse3 (= ~a19~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (and (<= 10 ~a28~0) .cse2 .cse4) (and .cse0 .cse2 .cse4) (and .cse1 .cse2 .cse4) (and .cse0 (= ~a11~0 0) .cse2 .cse3))) [2021-10-29 04:51:43,442 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-29 04:51:43,442 INFO L857 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-29 04:51:43,442 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-29 04:51:43,442 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-29 04:51:43,442 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-29 04:51:43,443 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-29 04:51:43,443 INFO L857 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-29 04:51:43,443 INFO L857 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-29 04:51:43,443 INFO L857 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-29 04:51:43,443 INFO L857 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-29 04:51:43,443 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-29 04:51:43,444 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-29 04:51:43,444 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-29 04:51:43,444 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-29 04:51:43,444 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-29 04:51:43,444 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-29 04:51:43,448 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:51:43,450 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:51:43,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:51:43 BoogieIcfgContainer [2021-10-29 04:51:43,467 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:51:43,468 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:51:43,468 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:51:43,468 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:51:43,469 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:51:37" (3/4) ... [2021-10-29 04:51:43,472 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 04:51:43,495 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 115 nodes and edges [2021-10-29 04:51:43,497 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-29 04:51:43,499 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-29 04:51:43,501 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-29 04:51:43,661 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d18d367d-692e-4ac2-ae1b-d1f74384ac79/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:51:43,661 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:51:43,663 INFO L168 Benchmark]: Toolchain (without parser) took 9483.23 ms. Allocated memory was 90.2 MB in the beginning and 184.5 MB in the end (delta: 94.4 MB). Free memory was 68.2 MB in the beginning and 77.7 MB in the end (delta: -9.6 MB). Peak memory consumption was 84.8 MB. Max. memory is 16.1 GB. [2021-10-29 04:51:43,664 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 90.2 MB. Free memory is still 65.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:51:43,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 666.37 ms. Allocated memory is still 90.2 MB. Free memory was 67.9 MB in the beginning and 50.0 MB in the end (delta: 17.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-29 04:51:43,665 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.69 ms. Allocated memory is still 90.2 MB. Free memory was 50.0 MB in the beginning and 44.5 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:51:43,666 INFO L168 Benchmark]: Boogie Preprocessor took 74.69 ms. Allocated memory is still 90.2 MB. Free memory was 44.5 MB in the beginning and 40.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 04:51:43,666 INFO L168 Benchmark]: RCFGBuilder took 2167.69 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 40.3 MB in the beginning and 60.3 MB in the end (delta: -20.1 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. [2021-10-29 04:51:43,667 INFO L168 Benchmark]: TraceAbstraction took 6273.38 ms. Allocated memory was 109.1 MB in the beginning and 184.5 MB in the end (delta: 75.5 MB). Free memory was 59.7 MB in the beginning and 93.6 MB in the end (delta: -33.9 MB). Peak memory consumption was 41.6 MB. Max. memory is 16.1 GB. [2021-10-29 04:51:43,667 INFO L168 Benchmark]: Witness Printer took 193.67 ms. Allocated memory is still 184.5 MB. Free memory was 93.6 MB in the beginning and 77.7 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-29 04:51:43,670 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 90.2 MB. Free memory is still 65.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 666.37 ms. Allocated memory is still 90.2 MB. Free memory was 67.9 MB in the beginning and 50.0 MB in the end (delta: 17.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 98.69 ms. Allocated memory is still 90.2 MB. Free memory was 50.0 MB in the beginning and 44.5 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.69 ms. Allocated memory is still 90.2 MB. Free memory was 44.5 MB in the beginning and 40.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2167.69 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 40.3 MB in the beginning and 60.3 MB in the end (delta: -20.1 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6273.38 ms. Allocated memory was 109.1 MB in the beginning and 184.5 MB in the end (delta: 75.5 MB). Free memory was 59.7 MB in the beginning and 93.6 MB in the end (delta: -33.9 MB). Peak memory consumption was 41.6 MB. Max. memory is 16.1 GB. * Witness Printer took 193.67 ms. Allocated memory is still 184.5 MB. Free memory was 93.6 MB in the beginning and 77.7 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 524]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.1s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 716 SDtfs, 803 SDslu, 45 SDs, 0 SdLazy, 2284 SolverSat, 607 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2163occurred in iteration=9, InterpolantAutomatonStates: 30, 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, 10 MinimizatonAttempts, 322 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 45 NumberOfFragments, 115 HoareAnnotationTreeSize, 3 FomulaSimplifications, 698 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 38 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 1183 NumberOfCodeBlocks, 1183 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1173 ConstructedInterpolants, 0 QuantifiedInterpolants, 1699 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 571/571 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((a25 == 1 && 8 <= a17) && a17 <= 8) && a19 == 1) || ((10 <= a28 && a17 <= 8) && a28 <= 10)) || ((a25 == 1 && a17 <= 8) && a28 <= 10)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (((a25 == 1 && a11 == 0) && a17 <= 8) && a19 == 1) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((a25 == 1 && 8 <= a17) && a17 <= 8) && a19 == 1) || ((10 <= a28 && a17 <= 8) && a28 <= 10)) || ((a25 == 1 && a17 <= 8) && a28 <= 10)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (((a25 == 1 && a11 == 0) && a17 <= 8) && a19 == 1) RESULT: Ultimate proved your program to be correct! [2021-10-29 04:51:43,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d18d367d-692e-4ac2-ae1b-d1f74384ac79/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...