./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5958333028b8f64162c92b3e987d78deaf3d77dc73071d1f6edce3e1a07212a4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:00:18,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:00:18,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:00:18,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:00:18,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:00:18,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:00:18,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:00:18,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:00:18,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:00:18,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:00:18,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:00:18,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:00:18,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:00:18,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:00:18,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:00:18,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:00:18,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:00:18,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:00:18,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:00:18,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:00:18,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:00:18,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:00:18,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:00:18,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:00:18,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:00:18,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:00:18,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:00:18,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:00:18,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:00:18,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:00:18,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:00:18,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:00:18,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:00:18,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:00:18,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:00:18,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:00:18,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:00:18,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:00:18,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:00:18,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:00:18,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:00:18,919 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:00:18,959 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:00:18,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:00:18,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:00:18,963 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:00:18,963 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:00:18,963 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:00:18,963 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:00:18,964 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:00:18,970 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:00:18,970 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:00:18,971 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:00:18,971 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:00:18,972 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:00:18,972 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:00:18,972 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:00:18,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:00:18,973 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:00:18,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:00:18,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:00:18,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:00:18,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:00:18,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:00:18,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:00:18,975 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:00:18,975 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:00:18,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:00:18,976 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:00:18,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:00:18,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:00:18,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:00:18,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:00:18,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:00:18,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:00:18,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:00:18,980 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:00:18,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:00:18,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:00:18,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:00:18,981 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:00:18,981 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_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5958333028b8f64162c92b3e987d78deaf3d77dc73071d1f6edce3e1a07212a4 [2021-11-03 04:00:19,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:00:19,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:00:19,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:00:19,286 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:00:19,287 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:00:19,288 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/eca-rers2012/Problem01_label05.c [2021-11-03 04:00:19,352 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/data/296626bd3/924048ded1c342fcb776037766a58db4/FLAG656c4a099 [2021-11-03 04:00:19,940 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:00:19,941 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/sv-benchmarks/c/eca-rers2012/Problem01_label05.c [2021-11-03 04:00:19,960 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/data/296626bd3/924048ded1c342fcb776037766a58db4/FLAG656c4a099 [2021-11-03 04:00:20,210 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/data/296626bd3/924048ded1c342fcb776037766a58db4 [2021-11-03 04:00:20,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:00:20,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:00:20,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:00:20,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:00:20,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:00:20,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:00:20" (1/1) ... [2021-11-03 04:00:20,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30217208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:20, skipping insertion in model container [2021-11-03 04:00:20,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:00:20" (1/1) ... [2021-11-03 04:00:20,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:00:20,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:00:20,640 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_4241522f-2365-45c5-b403-c7f23a2bddef/sv-benchmarks/c/eca-rers2012/Problem01_label05.c[17240,17253] [2021-11-03 04:00:20,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:00:20,719 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:00:20,821 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_4241522f-2365-45c5-b403-c7f23a2bddef/sv-benchmarks/c/eca-rers2012/Problem01_label05.c[17240,17253] [2021-11-03 04:00:20,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:00:20,866 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:00:20,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:20 WrapperNode [2021-11-03 04:00:20,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:00:20,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:00:20,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:00:20,868 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:00:20,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:20" (1/1) ... [2021-11-03 04:00:20,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:20" (1/1) ... [2021-11-03 04:00:20,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:00:20,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:00:20,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:00:20,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:00:20,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:20" (1/1) ... [2021-11-03 04:00:20,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:20" (1/1) ... [2021-11-03 04:00:21,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:20" (1/1) ... [2021-11-03 04:00:21,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:20" (1/1) ... [2021-11-03 04:00:21,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:20" (1/1) ... [2021-11-03 04:00:21,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:20" (1/1) ... [2021-11-03 04:00:21,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:20" (1/1) ... [2021-11-03 04:00:21,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:00:21,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:00:21,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:00:21,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:00:21,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:20" (1/1) ... [2021-11-03 04:00:21,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:00:21,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:00:21,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:00:21,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:00:21,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:00:21,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:00:21,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:00:21,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:00:22,906 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:00:22,906 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-03 04:00:22,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:00:22 BoogieIcfgContainer [2021-11-03 04:00:22,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:00:22,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:00:22,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:00:22,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:00:22,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:00:20" (1/3) ... [2021-11-03 04:00:22,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6e2e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:00:22, skipping insertion in model container [2021-11-03 04:00:22,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:20" (2/3) ... [2021-11-03 04:00:22,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c6e2e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:00:22, skipping insertion in model container [2021-11-03 04:00:22,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:00:22" (3/3) ... [2021-11-03 04:00:22,920 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label05.c [2021-11-03 04:00:22,925 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:00:22,926 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:00:22,986 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:00:22,997 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 [2021-11-03 04:00:22,997 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:00:23,016 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:23,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 04:00:23,026 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:23,026 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:23,027 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:00:23,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:23,032 INFO L85 PathProgramCache]: Analyzing trace with hash -104663553, now seen corresponding path program 1 times [2021-11-03 04:00:23,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:23,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300625070] [2021-11-03 04:00:23,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:23,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:23,540 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:23,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300625070] [2021-11-03 04:00:23,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300625070] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:23,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:23,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:00:23,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291037746] [2021-11-03 04:00:23,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:00:23,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:23,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:00:23,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:23,575 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:23,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:23,990 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-11-03 04:00:23,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:00:23,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-03 04:00:23,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:24,003 INFO L225 Difference]: With dead ends: 224 [2021-11-03 04:00:24,004 INFO L226 Difference]: Without dead ends: 145 [2021-11-03 04:00:24,007 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 [2021-11-03 04:00:24,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-03 04:00:24,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-11-03 04:00:24,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7986111111111112) internal successors, (259), 144 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:24,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2021-11-03 04:00:24,073 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2021-11-03 04:00:24,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:24,074 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2021-11-03 04:00:24,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:24,074 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2021-11-03 04:00:24,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 04:00:24,078 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:24,078 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:24,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:00:24,079 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:00:24,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:24,079 INFO L85 PathProgramCache]: Analyzing trace with hash -601817134, now seen corresponding path program 1 times [2021-11-03 04:00:24,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:24,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203855947] [2021-11-03 04:00:24,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:24,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:24,126 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:24,127 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:24,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203855947] [2021-11-03 04:00:24,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203855947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:24,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:24,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:00:24,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46716037] [2021-11-03 04:00:24,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:00:24,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:24,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:00:24,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:24,131 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:24,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:24,463 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2021-11-03 04:00:24,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:00:24,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-03 04:00:24,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:24,471 INFO L225 Difference]: With dead ends: 431 [2021-11-03 04:00:24,471 INFO L226 Difference]: Without dead ends: 287 [2021-11-03 04:00:24,473 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 [2021-11-03 04:00:24,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-03 04:00:24,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-11-03 04:00:24,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.632867132867133) internal successors, (467), 286 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:24,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2021-11-03 04:00:24,503 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 77 [2021-11-03 04:00:24,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:24,503 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2021-11-03 04:00:24,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:24,504 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2021-11-03 04:00:24,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 04:00:24,517 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:24,518 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:24,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 04:00:24,518 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:00:24,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:24,524 INFO L85 PathProgramCache]: Analyzing trace with hash -981084792, now seen corresponding path program 1 times [2021-11-03 04:00:24,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:24,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783006250] [2021-11-03 04:00:24,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:24,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:24,592 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:24,592 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:24,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783006250] [2021-11-03 04:00:24,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783006250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:24,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:24,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:00:24,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490606016] [2021-11-03 04:00:24,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:00:24,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:24,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:00:24,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:24,596 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:24,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:24,898 INFO L93 Difference]: Finished difference Result 857 states and 1398 transitions. [2021-11-03 04:00:24,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:00:24,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-03 04:00:24,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:24,902 INFO L225 Difference]: With dead ends: 857 [2021-11-03 04:00:24,902 INFO L226 Difference]: Without dead ends: 571 [2021-11-03 04:00:24,904 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 [2021-11-03 04:00:24,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-11-03 04:00:24,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 500. [2021-11-03 04:00:24,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.4729458917835672) internal successors, (735), 499 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:24,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 735 transitions. [2021-11-03 04:00:24,924 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 735 transitions. Word has length 82 [2021-11-03 04:00:24,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:24,924 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 735 transitions. [2021-11-03 04:00:24,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:24,925 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 735 transitions. [2021-11-03 04:00:24,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-03 04:00:24,928 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:24,928 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:24,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 04:00:24,929 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:00:24,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:24,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1190367402, now seen corresponding path program 1 times [2021-11-03 04:00:24,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:24,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286775418] [2021-11-03 04:00:24,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:24,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:24,990 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:24,990 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:24,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286775418] [2021-11-03 04:00:24,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286775418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:24,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:24,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:00:24,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433290118] [2021-11-03 04:00:24,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:00:24,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:24,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:00:24,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:24,994 INFO L87 Difference]: Start difference. First operand 500 states and 735 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:25,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:25,322 INFO L93 Difference]: Finished difference Result 1425 states and 2106 transitions. [2021-11-03 04:00:25,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:00:25,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-03 04:00:25,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:25,328 INFO L225 Difference]: With dead ends: 1425 [2021-11-03 04:00:25,328 INFO L226 Difference]: Without dead ends: 926 [2021-11-03 04:00:25,329 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 [2021-11-03 04:00:25,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-11-03 04:00:25,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 855. [2021-11-03 04:00:25,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.4180327868852458) internal successors, (1211), 854 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:25,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1211 transitions. [2021-11-03 04:00:25,355 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1211 transitions. Word has length 94 [2021-11-03 04:00:25,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:25,355 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1211 transitions. [2021-11-03 04:00:25,356 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) [2021-11-03 04:00:25,356 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1211 transitions. [2021-11-03 04:00:25,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-03 04:00:25,359 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:25,359 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:25,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 04:00:25,359 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:00:25,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:25,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1157701472, now seen corresponding path program 1 times [2021-11-03 04:00:25,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:25,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285871166] [2021-11-03 04:00:25,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:25,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:25,409 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-03 04:00:25,409 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:25,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285871166] [2021-11-03 04:00:25,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285871166] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:25,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:25,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:00:25,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356185573] [2021-11-03 04:00:25,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:00:25,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:25,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:00:25,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:25,413 INFO L87 Difference]: Start difference. First operand 855 states and 1211 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:25,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:25,764 INFO L93 Difference]: Finished difference Result 2277 states and 3231 transitions. [2021-11-03 04:00:25,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:00:25,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-03 04:00:25,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:25,772 INFO L225 Difference]: With dead ends: 2277 [2021-11-03 04:00:25,772 INFO L226 Difference]: Without dead ends: 1281 [2021-11-03 04:00:25,774 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 [2021-11-03 04:00:25,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-11-03 04:00:25,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1210. [2021-11-03 04:00:25,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1209 states have (on average 1.2406947890818858) internal successors, (1500), 1209 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:25,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1500 transitions. [2021-11-03 04:00:25,808 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1500 transitions. Word has length 98 [2021-11-03 04:00:25,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:25,809 INFO L470 AbstractCegarLoop]: Abstraction has 1210 states and 1500 transitions. [2021-11-03 04:00:25,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:25,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1500 transitions. [2021-11-03 04:00:25,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-03 04:00:25,812 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:25,812 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:25,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 04:00:25,813 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:00:25,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:25,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1373780852, now seen corresponding path program 1 times [2021-11-03 04:00:25,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:25,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189795190] [2021-11-03 04:00:25,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:25,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:25,866 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-03 04:00:25,866 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:25,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189795190] [2021-11-03 04:00:25,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189795190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:25,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:25,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:00:25,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051585695] [2021-11-03 04:00:25,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:00:25,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:25,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:00:25,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:25,869 INFO L87 Difference]: Start difference. First operand 1210 states and 1500 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:26,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:26,159 INFO L93 Difference]: Finished difference Result 2845 states and 3580 transitions. [2021-11-03 04:00:26,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:00:26,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-11-03 04:00:26,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:26,169 INFO L225 Difference]: With dead ends: 2845 [2021-11-03 04:00:26,169 INFO L226 Difference]: Without dead ends: 1707 [2021-11-03 04:00:26,171 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 [2021-11-03 04:00:26,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-11-03 04:00:26,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1494. [2021-11-03 04:00:26,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1493 states have (on average 1.2572002679169458) internal successors, (1877), 1493 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:26,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1877 transitions. [2021-11-03 04:00:26,216 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1877 transitions. Word has length 111 [2021-11-03 04:00:26,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:26,217 INFO L470 AbstractCegarLoop]: Abstraction has 1494 states and 1877 transitions. [2021-11-03 04:00:26,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:26,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1877 transitions. [2021-11-03 04:00:26,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 04:00:26,220 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:26,220 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:26,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 04:00:26,221 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:00:26,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:26,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1204168637, now seen corresponding path program 1 times [2021-11-03 04:00:26,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:26,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615214809] [2021-11-03 04:00:26,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:26,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:26,303 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-03 04:00:26,304 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:26,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615214809] [2021-11-03 04:00:26,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615214809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:26,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:26,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:00:26,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636626567] [2021-11-03 04:00:26,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:00:26,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:26,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:00:26,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:26,307 INFO L87 Difference]: Start difference. First operand 1494 states and 1877 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:26,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:26,554 INFO L93 Difference]: Finished difference Result 3129 states and 3931 transitions. [2021-11-03 04:00:26,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:00:26,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-03 04:00:26,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:26,563 INFO L225 Difference]: With dead ends: 3129 [2021-11-03 04:00:26,564 INFO L226 Difference]: Without dead ends: 1636 [2021-11-03 04:00:26,566 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 [2021-11-03 04:00:26,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-11-03 04:00:26,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1636. [2021-11-03 04:00:26,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1635 states have (on average 1.2428134556574923) internal successors, (2032), 1635 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:26,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2032 transitions. [2021-11-03 04:00:26,611 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2032 transitions. Word has length 113 [2021-11-03 04:00:26,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:26,611 INFO L470 AbstractCegarLoop]: Abstraction has 1636 states and 2032 transitions. [2021-11-03 04:00:26,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:26,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2032 transitions. [2021-11-03 04:00:26,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-03 04:00:26,617 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:26,618 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:26,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 04:00:26,618 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:00:26,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:26,619 INFO L85 PathProgramCache]: Analyzing trace with hash 13508603, now seen corresponding path program 1 times [2021-11-03 04:00:26,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:26,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337000940] [2021-11-03 04:00:26,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:26,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:26,724 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 69 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-03 04:00:26,724 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:26,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337000940] [2021-11-03 04:00:26,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337000940] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:00:26,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977449215] [2021-11-03 04:00:26,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:26,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:00:26,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:00:26,731 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:00:26,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 04:00:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:26,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:00:26,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:27,248 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-03 04:00:27,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:27,571 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-03 04:00:27,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977449215] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:27,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-03 04:00:27,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-11-03 04:00:27,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110961878] [2021-11-03 04:00:27,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:00:27,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:27,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:00:27,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:00:27,574 INFO L87 Difference]: Start difference. First operand 1636 states and 2032 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:27,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:27,849 INFO L93 Difference]: Finished difference Result 3200 states and 3989 transitions. [2021-11-03 04:00:27,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:00:27,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-03 04:00:27,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:27,861 INFO L225 Difference]: With dead ends: 3200 [2021-11-03 04:00:27,861 INFO L226 Difference]: Without dead ends: 1636 [2021-11-03 04:00:27,866 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 232 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:00:27,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-11-03 04:00:27,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1636. [2021-11-03 04:00:27,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1635 states have (on average 1.2269113149847095) internal successors, (2006), 1635 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:27,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2006 transitions. [2021-11-03 04:00:27,936 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2006 transitions. Word has length 117 [2021-11-03 04:00:27,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:27,937 INFO L470 AbstractCegarLoop]: Abstraction has 1636 states and 2006 transitions. [2021-11-03 04:00:27,938 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) [2021-11-03 04:00:27,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2006 transitions. [2021-11-03 04:00:27,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-03 04:00:27,942 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:27,942 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:27,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-03 04:00:28,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-03 04:00:28,158 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:00:28,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:28,159 INFO L85 PathProgramCache]: Analyzing trace with hash 650532299, now seen corresponding path program 1 times [2021-11-03 04:00:28,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:28,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098479699] [2021-11-03 04:00:28,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:28,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:28,217 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 69 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 04:00:28,217 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:28,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098479699] [2021-11-03 04:00:28,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098479699] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:00:28,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203023523] [2021-11-03 04:00:28,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:28,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:00:28,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:00:28,219 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:00:28,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 04:00:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:28,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:00:28,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:28,756 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-03 04:00:28,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:29,106 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-03 04:00:29,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203023523] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:29,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-03 04:00:29,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-11-03 04:00:29,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641023730] [2021-11-03 04:00:29,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:00:29,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:29,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:00:29,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:00:29,110 INFO L87 Difference]: Start difference. First operand 1636 states and 2006 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:29,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:29,419 INFO L93 Difference]: Finished difference Result 3271 states and 4025 transitions. [2021-11-03 04:00:29,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:00:29,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-03 04:00:29,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:29,430 INFO L225 Difference]: With dead ends: 3271 [2021-11-03 04:00:29,430 INFO L226 Difference]: Without dead ends: 1707 [2021-11-03 04:00:29,433 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 242 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:00:29,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-11-03 04:00:29,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1423. [2021-11-03 04:00:29,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 1422 states have (on average 1.1821378340365682) internal successors, (1681), 1422 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:29,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1681 transitions. [2021-11-03 04:00:29,476 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1681 transitions. Word has length 122 [2021-11-03 04:00:29,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:29,477 INFO L470 AbstractCegarLoop]: Abstraction has 1423 states and 1681 transitions. [2021-11-03 04:00:29,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:29,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1681 transitions. [2021-11-03 04:00:29,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-03 04:00:29,481 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:29,481 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:29,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:00:29,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:00:29,710 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:00:29,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:29,710 INFO L85 PathProgramCache]: Analyzing trace with hash 801412518, now seen corresponding path program 1 times [2021-11-03 04:00:29,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:29,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098168360] [2021-11-03 04:00:29,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:29,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:29,778 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 98 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-03 04:00:29,778 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:29,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098168360] [2021-11-03 04:00:29,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098168360] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:00:29,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436987162] [2021-11-03 04:00:29,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:29,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:00:29,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:00:29,782 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:00:29,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 04:00:30,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:30,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:00:30,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:30,513 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-03 04:00:30,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:30,939 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-03 04:00:30,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436987162] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:30,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-03 04:00:30,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-11-03 04:00:30,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236761028] [2021-11-03 04:00:30,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:00:30,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:30,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:00:30,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:00:30,942 INFO L87 Difference]: Start difference. First operand 1423 states and 1681 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:31,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:31,372 INFO L93 Difference]: Finished difference Result 3200 states and 3821 transitions. [2021-11-03 04:00:31,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:00:31,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-11-03 04:00:31,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:31,383 INFO L225 Difference]: With dead ends: 3200 [2021-11-03 04:00:31,384 INFO L226 Difference]: Without dead ends: 1849 [2021-11-03 04:00:31,386 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:00:31,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2021-11-03 04:00:31,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1423. [2021-11-03 04:00:31,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 1422 states have (on average 1.1504922644163151) internal successors, (1636), 1422 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:31,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1636 transitions. [2021-11-03 04:00:31,427 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1636 transitions. Word has length 139 [2021-11-03 04:00:31,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:31,427 INFO L470 AbstractCegarLoop]: Abstraction has 1423 states and 1636 transitions. [2021-11-03 04:00:31,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:31,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1636 transitions. [2021-11-03 04:00:31,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-03 04:00:31,431 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:31,432 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:31,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:00:31,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-03 04:00:31,654 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:00:31,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:31,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1724318607, now seen corresponding path program 1 times [2021-11-03 04:00:31,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:31,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081054523] [2021-11-03 04:00:31,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:31,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:31,735 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 69 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-03 04:00:31,736 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:31,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081054523] [2021-11-03 04:00:31,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081054523] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:00:31,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995061612] [2021-11-03 04:00:31,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:31,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:00:31,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:00:31,738 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:00:31,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 04:00:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:32,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:00:32,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:32,516 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 04:00:32,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:32,922 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 04:00:32,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995061612] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:32,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-03 04:00:32,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-11-03 04:00:32,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552410744] [2021-11-03 04:00:32,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:00:32,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:32,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:00:32,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:00:32,928 INFO L87 Difference]: Start difference. First operand 1423 states and 1636 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:33,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:33,194 INFO L93 Difference]: Finished difference Result 1638 states and 1893 transitions. [2021-11-03 04:00:33,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:00:33,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2021-11-03 04:00:33,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:33,203 INFO L225 Difference]: With dead ends: 1638 [2021-11-03 04:00:33,203 INFO L226 Difference]: Without dead ends: 1636 [2021-11-03 04:00:33,204 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 290 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:00:33,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-11-03 04:00:33,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1494. [2021-11-03 04:00:33,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1493 states have (on average 1.1540522438044207) internal successors, (1723), 1493 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:33,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1723 transitions. [2021-11-03 04:00:33,239 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1723 transitions. Word has length 146 [2021-11-03 04:00:33,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:33,239 INFO L470 AbstractCegarLoop]: Abstraction has 1494 states and 1723 transitions. [2021-11-03 04:00:33,240 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) [2021-11-03 04:00:33,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1723 transitions. [2021-11-03 04:00:33,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-03 04:00:33,244 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:33,244 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:33,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:00:33,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:00:33,458 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:00:33,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:33,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1499042919, now seen corresponding path program 1 times [2021-11-03 04:00:33,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:00:33,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414300186] [2021-11-03 04:00:33,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:33,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:00:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:33,555 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 127 proven. 6 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-11-03 04:00:33,555 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:00:33,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414300186] [2021-11-03 04:00:33,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414300186] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:00:33,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944757447] [2021-11-03 04:00:33,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:33,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:00:33,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:00:33,557 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:00:33,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 04:00:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:34,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:00:34,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:34,643 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-03 04:00:34,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:35,396 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-03 04:00:35,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944757447] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:35,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-03 04:00:35,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-11-03 04:00:35,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125460577] [2021-11-03 04:00:35,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:00:35,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:00:35,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:00:35,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:00:35,399 INFO L87 Difference]: Start difference. First operand 1494 states and 1723 transitions. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:35,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:35,798 INFO L93 Difference]: Finished difference Result 2914 states and 3358 transitions. [2021-11-03 04:00:35,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:00:35,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2021-11-03 04:00:35,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:35,799 INFO L225 Difference]: With dead ends: 2914 [2021-11-03 04:00:35,799 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 04:00:35,801 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:00:35,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 04:00:35,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 04:00:35,802 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) [2021-11-03 04:00:35,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 04:00:35,802 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 198 [2021-11-03 04:00:35,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:35,802 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 04:00:35,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:35,803 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 04:00:35,803 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 04:00:35,805 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:00:35,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:00:36,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-03 04:00:36,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-03 04:00:36,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:36,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:36,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:00:36,782 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-11-03 04:00:36,782 INFO L857 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-11-03 04:00:36,782 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-11-03 04:00:36,782 INFO L857 garLoopResultBuilder]: For program point L467-1(lines 40 585) no Hoare annotation was computed. [2021-11-03 04:00:36,782 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-11-03 04:00:36,783 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-11-03 04:00:36,783 INFO L857 garLoopResultBuilder]: For program point L468(line 468) no Hoare annotation was computed. [2021-11-03 04:00:36,783 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-11-03 04:00:36,784 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-11-03 04:00:36,784 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-11-03 04:00:36,784 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-11-03 04:00:36,784 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-11-03 04:00:36,784 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-11-03 04:00:36,785 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-11-03 04:00:36,785 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-11-03 04:00:36,785 INFO L857 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-11-03 04:00:36,785 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-11-03 04:00:36,785 INFO L857 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-11-03 04:00:36,785 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-11-03 04:00:36,785 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-11-03 04:00:36,786 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-11-03 04:00:36,786 INFO L857 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-11-03 04:00:36,786 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-11-03 04:00:36,786 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-11-03 04:00:36,786 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-11-03 04:00:36,786 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-11-03 04:00:36,787 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-11-03 04:00:36,787 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-11-03 04:00:36,787 INFO L857 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-11-03 04:00:36,787 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-11-03 04:00:36,787 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-11-03 04:00:36,787 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-11-03 04:00:36,788 INFO L857 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-11-03 04:00:36,788 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-11-03 04:00:36,788 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-11-03 04:00:36,788 INFO L857 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-11-03 04:00:36,788 INFO L857 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-11-03 04:00:36,788 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-11-03 04:00:36,789 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-03 04:00:36,789 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-11-03 04:00:36,789 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-11-03 04:00:36,789 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-11-03 04:00:36,790 INFO L853 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse4 (= ~a21~0 1)) (.cse6 (= ~a7~0 0)) (.cse5 (<= 15 ~a8~0)) (.cse2 (<= ~a16~0 4)) (.cse0 (<= ~a8~0 13)) (.cse9 (<= ~a21~0 0)) (.cse1 (= ~a17~0 1)) (.cse3 (= ~a20~0 1)) (.cse8 (<= 5 ~a16~0)) (.cse7 (<= ~a17~0 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse1 .cse5) (and .cse4 .cse6 .cse1 .cse2 .cse3) (and .cse7 .cse6 (<= ~a16~0 5)) (and .cse0 .cse4 .cse6 .cse1) (and .cse8 .cse9 .cse7 .cse3) (and .cse7 .cse5) (and .cse0 .cse9 .cse2) (and (not .cse3) .cse7 .cse2) (and .cse0 .cse9 .cse1 .cse3) (and .cse8 .cse7 (< 13 ~a8~0)))) [2021-11-03 04:00:36,790 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-11-03 04:00:36,790 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-11-03 04:00:36,790 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-11-03 04:00:36,790 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-11-03 04:00:36,790 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-11-03 04:00:36,791 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-11-03 04:00:36,791 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-11-03 04:00:36,791 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-03 04:00:36,791 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-11-03 04:00:36,791 INFO L860 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-11-03 04:00:36,791 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-11-03 04:00:36,792 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-11-03 04:00:36,792 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-11-03 04:00:36,792 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-11-03 04:00:36,792 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-11-03 04:00:36,792 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-11-03 04:00:36,792 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-11-03 04:00:36,793 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-11-03 04:00:36,793 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-11-03 04:00:36,793 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-11-03 04:00:36,793 INFO L857 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-11-03 04:00:36,793 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-11-03 04:00:36,793 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-11-03 04:00:36,794 INFO L853 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse4 (= ~a21~0 1)) (.cse6 (= ~a7~0 0)) (.cse5 (<= 15 ~a8~0)) (.cse2 (<= ~a16~0 4)) (.cse0 (<= ~a8~0 13)) (.cse9 (<= ~a21~0 0)) (.cse1 (= ~a17~0 1)) (.cse3 (= ~a20~0 1)) (.cse8 (<= 5 ~a16~0)) (.cse7 (<= ~a17~0 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse1 .cse5) (and .cse4 .cse6 .cse1 .cse2 .cse3) (and .cse7 .cse6 (<= ~a16~0 5)) (and .cse0 .cse4 .cse6 .cse1) (and .cse8 .cse9 .cse7 .cse3) (and .cse7 .cse5) (and .cse0 .cse9 .cse2) (and (not .cse3) .cse7 .cse2) (and .cse0 .cse9 .cse1 .cse3) (and .cse8 .cse7 (< 13 ~a8~0)))) [2021-11-03 04:00:36,794 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-11-03 04:00:36,794 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 468) no Hoare annotation was computed. [2021-11-03 04:00:36,794 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-11-03 04:00:36,794 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-11-03 04:00:36,795 INFO L857 garLoopResultBuilder]: For program point L464-1(lines 40 585) no Hoare annotation was computed. [2021-11-03 04:00:36,795 INFO L857 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-11-03 04:00:36,795 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-11-03 04:00:36,795 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-11-03 04:00:36,795 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-11-03 04:00:36,798 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:36,800 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:00:36,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:00:36 BoogieIcfgContainer [2021-11-03 04:00:36,819 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:00:36,819 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:00:36,819 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:00:36,820 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:00:36,820 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:00:22" (3/4) ... [2021-11-03 04:00:36,823 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-03 04:00:36,847 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 109 nodes and edges [2021-11-03 04:00:36,849 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-11-03 04:00:36,851 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-03 04:00:36,852 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 04:00:36,994 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 04:00:36,994 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:00:36,996 INFO L168 Benchmark]: Toolchain (without parser) took 16781.15 ms. Allocated memory was 98.6 MB in the beginning and 226.5 MB in the end (delta: 127.9 MB). Free memory was 64.5 MB in the beginning and 90.2 MB in the end (delta: -25.8 MB). Peak memory consumption was 102.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:00:36,996 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 98.6 MB. Free memory was 54.9 MB in the beginning and 54.9 MB in the end (delta: 38.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:00:36,997 INFO L168 Benchmark]: CACSL2BoogieTranslator took 649.25 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 64.3 MB in the beginning and 79.4 MB in the end (delta: -15.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:00:36,998 INFO L168 Benchmark]: Boogie Procedure Inliner took 107.88 ms. Allocated memory is still 121.6 MB. Free memory was 79.4 MB in the beginning and 73.7 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-03 04:00:36,998 INFO L168 Benchmark]: Boogie Preprocessor took 131.40 ms. Allocated memory is still 121.6 MB. Free memory was 73.7 MB in the beginning and 69.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-03 04:00:36,998 INFO L168 Benchmark]: RCFGBuilder took 1800.20 ms. Allocated memory is still 121.6 MB. Free memory was 69.5 MB in the beginning and 54.6 MB in the end (delta: 14.9 MB). Peak memory consumption was 41.2 MB. Max. memory is 16.1 GB. [2021-11-03 04:00:36,999 INFO L168 Benchmark]: TraceAbstraction took 13906.31 ms. Allocated memory was 121.6 MB in the beginning and 226.5 MB in the end (delta: 104.9 MB). Free memory was 54.6 MB in the beginning and 106.0 MB in the end (delta: -51.4 MB). Peak memory consumption was 53.0 MB. Max. memory is 16.1 GB. [2021-11-03 04:00:36,999 INFO L168 Benchmark]: Witness Printer took 175.11 ms. Allocated memory is still 226.5 MB. Free memory was 106.0 MB in the beginning and 90.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-03 04:00:37,001 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 98.6 MB. Free memory was 54.9 MB in the beginning and 54.9 MB in the end (delta: 38.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 649.25 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 64.3 MB in the beginning and 79.4 MB in the end (delta: -15.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 107.88 ms. Allocated memory is still 121.6 MB. Free memory was 79.4 MB in the beginning and 73.7 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 131.40 ms. Allocated memory is still 121.6 MB. Free memory was 73.7 MB in the beginning and 69.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1800.20 ms. Allocated memory is still 121.6 MB. Free memory was 69.5 MB in the beginning and 54.6 MB in the end (delta: 14.9 MB). Peak memory consumption was 41.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13906.31 ms. Allocated memory was 121.6 MB in the beginning and 226.5 MB in the end (delta: 104.9 MB). Free memory was 54.6 MB in the beginning and 106.0 MB in the end (delta: -51.4 MB). Peak memory consumption was 53.0 MB. Max. memory is 16.1 GB. * Witness Printer took 175.11 ms. Allocated memory is still 226.5 MB. Free memory was 106.0 MB in the beginning and 90.2 MB in the end (delta: 15.7 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: 468]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.8s, OverallIterations: 12, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 680 SDtfs, 585 SDslu, 55 SDs, 0 SdLazy, 2696 SolverSat, 562 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1471 GetRequests, 1444 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1636occurred in iteration=7, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 1278 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 53 NumberOfFragments, 255 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1168 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 416 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 2090 NumberOfCodeBlocks, 2090 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 2790 ConstructedInterpolants, 0 QuantifiedInterpolants, 5655 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1945 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 22 InterpolantComputations, 17 PerfectInterpolantSequences, 2467/2497 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((((((a8 <= 13 && a17 == 1) && a16 <= 4) && a20 == 1) || ((a21 == 1 && a17 == 1) && 15 <= a8)) || ((((a21 == 1 && a7 == 0) && a17 == 1) && a16 <= 4) && a20 == 1)) || ((a17 <= 0 && a7 == 0) && a16 <= 5)) || (((a8 <= 13 && a21 == 1) && a7 == 0) && a17 == 1)) || (((5 <= a16 && a21 <= 0) && a17 <= 0) && a20 == 1)) || (a17 <= 0 && 15 <= a8)) || ((a8 <= 13 && a21 <= 0) && a16 <= 4)) || ((!(a20 == 1) && a17 <= 0) && a16 <= 4)) || (((a8 <= 13 && a21 <= 0) && a17 == 1) && a20 == 1)) || ((5 <= a16 && a17 <= 0) && 13 < a8) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((((a8 <= 13 && a17 == 1) && a16 <= 4) && a20 == 1) || ((a21 == 1 && a17 == 1) && 15 <= a8)) || ((((a21 == 1 && a7 == 0) && a17 == 1) && a16 <= 4) && a20 == 1)) || ((a17 <= 0 && a7 == 0) && a16 <= 5)) || (((a8 <= 13 && a21 == 1) && a7 == 0) && a17 == 1)) || (((5 <= a16 && a21 <= 0) && a17 <= 0) && a20 == 1)) || (a17 <= 0 && 15 <= a8)) || ((a8 <= 13 && a21 <= 0) && a16 <= 4)) || ((!(a20 == 1) && a17 <= 0) && a16 <= 4)) || (((a8 <= 13 && a21 <= 0) && a17 == 1) && a20 == 1)) || ((5 <= a16 && a17 <= 0) && 13 < a8) RESULT: Ultimate proved your program to be correct! [2021-11-03 04:00:37,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4241522f-2365-45c5-b403-c7f23a2bddef/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE