./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label46.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_66c378a0-fc89-45a6-9e5b-76f617b19e55/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_66c378a0-fc89-45a6-9e5b-76f617b19e55/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_66c378a0-fc89-45a6-9e5b-76f617b19e55/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_66c378a0-fc89-45a6-9e5b-76f617b19e55/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label46.c -s /tmp/vcloud-vcloud-master/worker/run_dir_66c378a0-fc89-45a6-9e5b-76f617b19e55/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_66c378a0-fc89-45a6-9e5b-76f617b19e55/bin/utaipan --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 86d50476b0a5ff5d2cfee5f4f0e078a14c6aba43 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 12:33:35,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 12:33:35,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 12:33:35,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 12:33:35,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 12:33:35,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 12:33:35,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 12:33:35,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 12:33:35,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 12:33:35,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 12:33:35,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 12:33:35,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 12:33:35,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 12:33:35,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 12:33:35,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 12:33:35,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 12:33:35,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 12:33:35,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 12:33:35,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 12:33:35,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 12:33:35,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 12:33:35,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 12:33:35,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 12:33:35,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 12:33:35,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 12:33:35,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 12:33:35,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 12:33:35,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 12:33:35,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 12:33:35,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 12:33:35,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 12:33:35,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 12:33:35,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 12:33:35,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 12:33:35,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 12:33:35,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 12:33:35,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 12:33:35,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 12:33:35,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 12:33:35,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 12:33:35,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 12:33:35,895 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_66c378a0-fc89-45a6-9e5b-76f617b19e55/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 12:33:35,911 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 12:33:35,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 12:33:35,912 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 12:33:35,912 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 12:33:35,912 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 12:33:35,912 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 12:33:35,912 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 12:33:35,913 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 12:33:35,913 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 12:33:35,913 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 12:33:35,913 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 12:33:35,913 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 12:33:35,913 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 12:33:35,914 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 12:33:35,914 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 12:33:35,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 12:33:35,914 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 12:33:35,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 12:33:35,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 12:33:35,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 12:33:35,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 12:33:35,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 12:33:35,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 12:33:35,915 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 12:33:35,915 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 12:33:35,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 12:33:35,916 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 12:33:35,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 12:33:35,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 12:33:35,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 12:33:35,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:33:35,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 12:33:35,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 12:33:35,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 12:33:35,917 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 12:33:35,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 12:33:35,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 12:33:35,917 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 12:33:35,917 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 12:33:35,917 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-vcloud-master/worker/run_dir_66c378a0-fc89-45a6-9e5b-76f617b19e55/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_66c378a0-fc89-45a6-9e5b-76f617b19e55/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86d50476b0a5ff5d2cfee5f4f0e078a14c6aba43 [2020-12-09 12:33:36,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 12:33:36,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 12:33:36,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 12:33:36,112 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 12:33:36,113 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 12:33:36,114 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_66c378a0-fc89-45a6-9e5b-76f617b19e55/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label46.c [2020-12-09 12:33:36,155 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66c378a0-fc89-45a6-9e5b-76f617b19e55/bin/utaipan/data/6c7ef73b8/7abb34e6274c4be09aebd9955042e0fb/FLAG7552ed6e6 [2020-12-09 12:33:36,593 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 12:33:36,593 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_66c378a0-fc89-45a6-9e5b-76f617b19e55/sv-benchmarks/c/eca-rers2012/Problem01_label46.c [2020-12-09 12:33:36,601 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66c378a0-fc89-45a6-9e5b-76f617b19e55/bin/utaipan/data/6c7ef73b8/7abb34e6274c4be09aebd9955042e0fb/FLAG7552ed6e6 [2020-12-09 12:33:36,618 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_66c378a0-fc89-45a6-9e5b-76f617b19e55/bin/utaipan/data/6c7ef73b8/7abb34e6274c4be09aebd9955042e0fb [2020-12-09 12:33:36,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 12:33:36,622 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 12:33:36,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 12:33:36,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 12:33:36,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 12:33:36,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:33:36" (1/1) ... [2020-12-09 12:33:36,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d4dec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:36, skipping insertion in model container [2020-12-09 12:33:36,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:33:36" (1/1) ... [2020-12-09 12:33:36,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 12:33:36,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 12:33:36,928 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_66c378a0-fc89-45a6-9e5b-76f617b19e55/sv-benchmarks/c/eca-rers2012/Problem01_label46.c[19475,19488] [2020-12-09 12:33:36,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:33:36,961 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 12:33:37,038 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_66c378a0-fc89-45a6-9e5b-76f617b19e55/sv-benchmarks/c/eca-rers2012/Problem01_label46.c[19475,19488] [2020-12-09 12:33:37,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:33:37,063 INFO L208 MainTranslator]: Completed translation [2020-12-09 12:33:37,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:37 WrapperNode [2020-12-09 12:33:37,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 12:33:37,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 12:33:37,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 12:33:37,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 12:33:37,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:37" (1/1) ... [2020-12-09 12:33:37,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:37" (1/1) ... [2020-12-09 12:33:37,135 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 12:33:37,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 12:33:37,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 12:33:37,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 12:33:37,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:37" (1/1) ... [2020-12-09 12:33:37,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:37" (1/1) ... [2020-12-09 12:33:37,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:37" (1/1) ... [2020-12-09 12:33:37,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:37" (1/1) ... [2020-12-09 12:33:37,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:37" (1/1) ... [2020-12-09 12:33:37,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:37" (1/1) ... [2020-12-09 12:33:37,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:37" (1/1) ... [2020-12-09 12:33:37,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 12:33:37,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 12:33:37,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 12:33:37,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 12:33:37,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66c378a0-fc89-45a6-9e5b-76f617b19e55/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:33:37,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 12:33:37,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 12:33:37,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 12:33:37,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 12:33:38,498 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 12:33:38,498 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 12:33:38,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:33:38 BoogieIcfgContainer [2020-12-09 12:33:38,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 12:33:38,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 12:33:38,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 12:33:38,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 12:33:38,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:33:36" (1/3) ... [2020-12-09 12:33:38,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5b471c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:33:38, skipping insertion in model container [2020-12-09 12:33:38,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:33:37" (2/3) ... [2020-12-09 12:33:38,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5b471c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:33:38, skipping insertion in model container [2020-12-09 12:33:38,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:33:38" (3/3) ... [2020-12-09 12:33:38,506 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label46.c [2020-12-09 12:33:38,517 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 12:33:38,520 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 12:33:38,529 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 12:33:38,548 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 12:33:38,549 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 12:33:38,549 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 12:33:38,549 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 12:33:38,549 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 12:33:38,549 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 12:33:38,549 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 12:33:38,549 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 12:33:38,560 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-12-09 12:33:38,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-09 12:33:38,567 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:33:38,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:33:38,568 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:33:38,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:33:38,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1323233689, now seen corresponding path program 1 times [2020-12-09 12:33:38,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:33:38,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294431805] [2020-12-09 12:33:38,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:33:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:33:38,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:33:38,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294431805] [2020-12-09 12:33:38,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:33:38,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:33:38,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382569071] [2020-12-09 12:33:38,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:33:38,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:33:38,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:33:38,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:33:38,864 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-12-09 12:33:39,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:33:39,189 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-12-09 12:33:39,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:33:39,190 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-09 12:33:39,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:33:39,202 INFO L225 Difference]: With dead ends: 224 [2020-12-09 12:33:39,202 INFO L226 Difference]: Without dead ends: 145 [2020-12-09 12:33:39,205 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:33:39,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-09 12:33:39,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-12-09 12:33:39,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-12-09 12:33:39,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 253 transitions. [2020-12-09 12:33:39,248 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 253 transitions. Word has length 71 [2020-12-09 12:33:39,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:33:39,249 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 253 transitions. [2020-12-09 12:33:39,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:33:39,249 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 253 transitions. [2020-12-09 12:33:39,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-09 12:33:39,252 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:33:39,252 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:33:39,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 12:33:39,253 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:33:39,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:33:39,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1129616543, now seen corresponding path program 1 times [2020-12-09 12:33:39,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:33:39,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481404402] [2020-12-09 12:33:39,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:33:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:33:39,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 12:33:39,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481404402] [2020-12-09 12:33:39,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:33:39,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:33:39,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533055974] [2020-12-09 12:33:39,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:33:39,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:33:39,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:33:39,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:33:39,357 INFO L87 Difference]: Start difference. First operand 145 states and 253 transitions. Second operand 3 states. [2020-12-09 12:33:39,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:33:39,640 INFO L93 Difference]: Finished difference Result 431 states and 756 transitions. [2020-12-09 12:33:39,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:33:39,640 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-09 12:33:39,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:33:39,644 INFO L225 Difference]: With dead ends: 431 [2020-12-09 12:33:39,645 INFO L226 Difference]: Without dead ends: 287 [2020-12-09 12:33:39,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:33:39,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-12-09 12:33:39,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-12-09 12:33:39,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-12-09 12:33:39,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 479 transitions. [2020-12-09 12:33:39,666 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 479 transitions. Word has length 75 [2020-12-09 12:33:39,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:33:39,667 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 479 transitions. [2020-12-09 12:33:39,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:33:39,667 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 479 transitions. [2020-12-09 12:33:39,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-09 12:33:39,670 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:33:39,670 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:33:39,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 12:33:39,671 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:33:39,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:33:39,671 INFO L82 PathProgramCache]: Analyzing trace with hash 585784031, now seen corresponding path program 1 times [2020-12-09 12:33:39,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:33:39,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860101624] [2020-12-09 12:33:39,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:33:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:33:39,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:33:39,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860101624] [2020-12-09 12:33:39,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:33:39,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:33:39,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794194830] [2020-12-09 12:33:39,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:33:39,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:33:39,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:33:39,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:33:39,715 INFO L87 Difference]: Start difference. First operand 287 states and 479 transitions. Second operand 3 states. [2020-12-09 12:33:39,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:33:39,918 INFO L93 Difference]: Finished difference Result 859 states and 1435 transitions. [2020-12-09 12:33:39,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:33:39,918 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-09 12:33:39,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:33:39,921 INFO L225 Difference]: With dead ends: 859 [2020-12-09 12:33:39,921 INFO L226 Difference]: Without dead ends: 573 [2020-12-09 12:33:39,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:33:39,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-12-09 12:33:39,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 571. [2020-12-09 12:33:39,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-12-09 12:33:39,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 884 transitions. [2020-12-09 12:33:39,942 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 884 transitions. Word has length 76 [2020-12-09 12:33:39,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:33:39,942 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 884 transitions. [2020-12-09 12:33:39,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:33:39,943 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 884 transitions. [2020-12-09 12:33:39,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-09 12:33:39,946 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:33:39,946 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:33:39,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 12:33:39,947 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:33:39,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:33:39,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1341155980, now seen corresponding path program 1 times [2020-12-09 12:33:39,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:33:39,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553192363] [2020-12-09 12:33:39,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:33:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:33:39,998 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:33:39,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553192363] [2020-12-09 12:33:39,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:33:39,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 12:33:39,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214755805] [2020-12-09 12:33:40,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 12:33:40,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:33:40,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 12:33:40,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 12:33:40,001 INFO L87 Difference]: Start difference. First operand 571 states and 884 transitions. Second operand 4 states. [2020-12-09 12:33:40,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:33:40,296 INFO L93 Difference]: Finished difference Result 1425 states and 2183 transitions. [2020-12-09 12:33:40,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 12:33:40,296 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-12-09 12:33:40,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:33:40,301 INFO L225 Difference]: With dead ends: 1425 [2020-12-09 12:33:40,301 INFO L226 Difference]: Without dead ends: 855 [2020-12-09 12:33:40,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 12:33:40,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-12-09 12:33:40,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 713. [2020-12-09 12:33:40,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-12-09 12:33:40,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1056 transitions. [2020-12-09 12:33:40,323 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1056 transitions. Word has length 83 [2020-12-09 12:33:40,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:33:40,323 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1056 transitions. [2020-12-09 12:33:40,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 12:33:40,323 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1056 transitions. [2020-12-09 12:33:40,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-09 12:33:40,325 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:33:40,326 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:33:40,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 12:33:40,326 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:33:40,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:33:40,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1330249501, now seen corresponding path program 1 times [2020-12-09 12:33:40,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:33:40,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163936432] [2020-12-09 12:33:40,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:33:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:33:40,367 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:33:40,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163936432] [2020-12-09 12:33:40,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:33:40,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 12:33:40,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001329171] [2020-12-09 12:33:40,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:33:40,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:33:40,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:33:40,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:33:40,370 INFO L87 Difference]: Start difference. First operand 713 states and 1056 transitions. Second operand 3 states. [2020-12-09 12:33:40,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:33:40,621 INFO L93 Difference]: Finished difference Result 1922 states and 2886 transitions. [2020-12-09 12:33:40,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:33:40,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-12-09 12:33:40,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:33:40,627 INFO L225 Difference]: With dead ends: 1922 [2020-12-09 12:33:40,627 INFO L226 Difference]: Without dead ends: 1210 [2020-12-09 12:33:40,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:33:40,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-12-09 12:33:40,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 997. [2020-12-09 12:33:40,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-12-09 12:33:40,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1508 transitions. [2020-12-09 12:33:40,653 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1508 transitions. Word has length 84 [2020-12-09 12:33:40,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:33:40,653 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1508 transitions. [2020-12-09 12:33:40,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:33:40,653 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1508 transitions. [2020-12-09 12:33:40,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-09 12:33:40,655 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:33:40,656 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:33:40,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 12:33:40,656 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:33:40,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:33:40,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1554338006, now seen corresponding path program 1 times [2020-12-09 12:33:40,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:33:40,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851980256] [2020-12-09 12:33:40,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:33:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:33:40,694 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-09 12:33:40,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851980256] [2020-12-09 12:33:40,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:33:40,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:33:40,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473061245] [2020-12-09 12:33:40,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:33:40,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:33:40,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:33:40,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:33:40,696 INFO L87 Difference]: Start difference. First operand 997 states and 1508 transitions. Second operand 3 states. [2020-12-09 12:33:40,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:33:40,944 INFO L93 Difference]: Finished difference Result 2206 states and 3300 transitions. [2020-12-09 12:33:40,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:33:40,944 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-12-09 12:33:40,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:33:40,950 INFO L225 Difference]: With dead ends: 2206 [2020-12-09 12:33:40,950 INFO L226 Difference]: Without dead ends: 1210 [2020-12-09 12:33:40,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:33:40,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-12-09 12:33:40,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1210. [2020-12-09 12:33:40,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-12-09 12:33:40,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1739 transitions. [2020-12-09 12:33:40,973 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1739 transitions. Word has length 87 [2020-12-09 12:33:40,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:33:40,974 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1739 transitions. [2020-12-09 12:33:40,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:33:40,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1739 transitions. [2020-12-09 12:33:40,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-09 12:33:40,976 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:33:40,976 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:33:40,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 12:33:40,976 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:33:40,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:33:40,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1204459762, now seen corresponding path program 1 times [2020-12-09 12:33:40,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:33:40,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084131324] [2020-12-09 12:33:40,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:33:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:33:41,016 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-09 12:33:41,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084131324] [2020-12-09 12:33:41,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:33:41,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 12:33:41,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313948250] [2020-12-09 12:33:41,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 12:33:41,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:33:41,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 12:33:41,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 12:33:41,018 INFO L87 Difference]: Start difference. First operand 1210 states and 1739 transitions. Second operand 4 states. [2020-12-09 12:33:41,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:33:41,387 INFO L93 Difference]: Finished difference Result 2490 states and 3566 transitions. [2020-12-09 12:33:41,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 12:33:41,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-12-09 12:33:41,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:33:41,394 INFO L225 Difference]: With dead ends: 2490 [2020-12-09 12:33:41,394 INFO L226 Difference]: Without dead ends: 1281 [2020-12-09 12:33:41,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 12:33:41,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-12-09 12:33:41,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1139. [2020-12-09 12:33:41,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-12-09 12:33:41,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1596 transitions. [2020-12-09 12:33:41,424 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1596 transitions. Word has length 91 [2020-12-09 12:33:41,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:33:41,424 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1596 transitions. [2020-12-09 12:33:41,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 12:33:41,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1596 transitions. [2020-12-09 12:33:41,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-09 12:33:41,427 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:33:41,428 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:33:41,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 12:33:41,428 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:33:41,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:33:41,429 INFO L82 PathProgramCache]: Analyzing trace with hash -49411434, now seen corresponding path program 1 times [2020-12-09 12:33:41,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:33:41,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388065486] [2020-12-09 12:33:41,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:33:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:33:41,486 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-09 12:33:41,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388065486] [2020-12-09 12:33:41,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:33:41,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 12:33:41,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806429438] [2020-12-09 12:33:41,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:33:41,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:33:41,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:33:41,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:33:41,489 INFO L87 Difference]: Start difference. First operand 1139 states and 1596 transitions. Second operand 3 states. [2020-12-09 12:33:41,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:33:41,716 INFO L93 Difference]: Finished difference Result 2703 states and 3761 transitions. [2020-12-09 12:33:41,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:33:41,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2020-12-09 12:33:41,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:33:41,722 INFO L225 Difference]: With dead ends: 2703 [2020-12-09 12:33:41,722 INFO L226 Difference]: Without dead ends: 1281 [2020-12-09 12:33:41,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:33:41,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-12-09 12:33:41,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1139. [2020-12-09 12:33:41,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-12-09 12:33:41,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1388 transitions. [2020-12-09 12:33:41,743 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1388 transitions. Word has length 112 [2020-12-09 12:33:41,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:33:41,743 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1388 transitions. [2020-12-09 12:33:41,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:33:41,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1388 transitions. [2020-12-09 12:33:41,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-09 12:33:41,745 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:33:41,745 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:33:41,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 12:33:41,745 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:33:41,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:33:41,746 INFO L82 PathProgramCache]: Analyzing trace with hash 887314962, now seen corresponding path program 1 times [2020-12-09 12:33:41,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:33:41,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293958753] [2020-12-09 12:33:41,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:33:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:33:41,799 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-12-09 12:33:41,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293958753] [2020-12-09 12:33:41,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:33:41,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:33:41,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508490387] [2020-12-09 12:33:41,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:33:41,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:33:41,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:33:41,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:33:41,801 INFO L87 Difference]: Start difference. First operand 1139 states and 1388 transitions. Second operand 3 states. [2020-12-09 12:33:41,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:33:41,982 INFO L93 Difference]: Finished difference Result 2419 states and 2945 transitions. [2020-12-09 12:33:41,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:33:41,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 116 [2020-12-09 12:33:41,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:33:41,989 INFO L225 Difference]: With dead ends: 2419 [2020-12-09 12:33:41,989 INFO L226 Difference]: Without dead ends: 1281 [2020-12-09 12:33:41,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:33:41,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-12-09 12:33:42,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1210. [2020-12-09 12:33:42,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-12-09 12:33:42,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1466 transitions. [2020-12-09 12:33:42,020 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1466 transitions. Word has length 116 [2020-12-09 12:33:42,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:33:42,020 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1466 transitions. [2020-12-09 12:33:42,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:33:42,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1466 transitions. [2020-12-09 12:33:42,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-12-09 12:33:42,022 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:33:42,023 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:33:42,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 12:33:42,023 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:33:42,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:33:42,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1071156954, now seen corresponding path program 1 times [2020-12-09 12:33:42,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:33:42,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616781398] [2020-12-09 12:33:42,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:33:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:33:42,083 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 54 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-12-09 12:33:42,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616781398] [2020-12-09 12:33:42,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898588268] [2020-12-09 12:33:42,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66c378a0-fc89-45a6-9e5b-76f617b19e55/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 12:33:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:33:42,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 12:33:42,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:33:42,249 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-09 12:33:42,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:33:42,336 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-09 12:33:42,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 12:33:42,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2020-12-09 12:33:42,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505834029] [2020-12-09 12:33:42,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 12:33:42,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:33:42,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 12:33:42,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 12:33:42,338 INFO L87 Difference]: Start difference. First operand 1210 states and 1466 transitions. Second operand 4 states. [2020-12-09 12:33:42,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:33:42,659 INFO L93 Difference]: Finished difference Result 2630 states and 3222 transitions. [2020-12-09 12:33:42,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 12:33:42,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-12-09 12:33:42,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:33:42,660 INFO L225 Difference]: With dead ends: 2630 [2020-12-09 12:33:42,660 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 12:33:42,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 12:33:42,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 12:33:42,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 12:33:42,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 12:33:42,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 12:33:42,663 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 120 [2020-12-09 12:33:42,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:33:42,663 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 12:33:42,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 12:33:42,663 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 12:33:42,663 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 12:33:42,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-09 12:33:42,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 12:33:42,979 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-12-09 12:33:42,979 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-12-09 12:33:42,979 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-12-09 12:33:42,979 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-12-09 12:33:42,979 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-12-09 12:33:42,979 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-12-09 12:33:42,980 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-12-09 12:33:42,980 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-12-09 12:33:42,980 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-12-09 12:33:42,980 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-12-09 12:33:42,980 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-12-09 12:33:42,980 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-12-09 12:33:42,980 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-12-09 12:33:42,980 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-12-09 12:33:42,980 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-12-09 12:33:42,980 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-12-09 12:33:42,980 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-12-09 12:33:42,980 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-12-09 12:33:42,980 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-12-09 12:33:42,981 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-12-09 12:33:42,981 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-12-09 12:33:42,981 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-12-09 12:33:42,981 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-12-09 12:33:42,981 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-12-09 12:33:42,981 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-12-09 12:33:42,981 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-12-09 12:33:42,981 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-12-09 12:33:42,981 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-12-09 12:33:42,981 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-12-09 12:33:42,981 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-12-09 12:33:42,981 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-12-09 12:33:42,981 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-12-09 12:33:42,981 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-12-09 12:33:42,982 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-12-09 12:33:42,982 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-12-09 12:33:42,982 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-12-09 12:33:42,982 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 12:33:42,982 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-12-09 12:33:42,982 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-12-09 12:33:42,982 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-12-09 12:33:42,982 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a20~0 1))) (or (<= ~a16~0 5) (and .cse0 (<= ~a8~0 13)) (and (= ~a21~0 1) .cse0) (<= 15 ~a8~0))) [2020-12-09 12:33:42,982 INFO L262 CegarLoopResult]: For program point L518-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 12:33:42,982 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-12-09 12:33:42,983 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-12-09 12:33:42,983 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-12-09 12:33:42,983 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-12-09 12:33:42,983 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-12-09 12:33:42,983 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-12-09 12:33:42,983 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-12-09 12:33:42,983 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 12:33:42,983 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-12-09 12:33:42,983 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-12-09 12:33:42,983 INFO L262 CegarLoopResult]: For program point L521-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 12:33:42,983 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-12-09 12:33:42,983 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-12-09 12:33:42,983 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-12-09 12:33:42,983 INFO L262 CegarLoopResult]: For program point L522(line 522) no Hoare annotation was computed. [2020-12-09 12:33:42,984 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-12-09 12:33:42,984 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-12-09 12:33:42,984 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-12-09 12:33:42,984 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-12-09 12:33:42,984 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-12-09 12:33:42,984 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-12-09 12:33:42,984 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-12-09 12:33:42,984 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-12-09 12:33:42,984 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-12-09 12:33:42,984 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-12-09 12:33:42,984 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a20~0 1))) (or (<= ~a16~0 5) (and .cse0 (<= ~a8~0 13)) (and (= ~a21~0 1) .cse0) (<= 15 ~a8~0))) [2020-12-09 12:33:42,984 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-12-09 12:33:42,985 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 522) no Hoare annotation was computed. [2020-12-09 12:33:42,985 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-12-09 12:33:42,985 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-12-09 12:33:42,985 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-12-09 12:33:42,985 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-12-09 12:33:42,985 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-12-09 12:33:42,985 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-12-09 12:33:42,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:33:42 BoogieIcfgContainer [2020-12-09 12:33:42,997 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 12:33:42,997 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 12:33:42,997 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 12:33:42,997 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 12:33:42,998 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:33:38" (3/4) ... [2020-12-09 12:33:43,000 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 12:33:43,017 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-12-09 12:33:43,018 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 12:33:43,019 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-12-09 12:33:43,021 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 12:33:43,110 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_66c378a0-fc89-45a6-9e5b-76f617b19e55/bin/utaipan/witness.graphml [2020-12-09 12:33:43,111 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 12:33:43,112 INFO L168 Benchmark]: Toolchain (without parser) took 6489.33 ms. Allocated memory was 81.8 MB in the beginning and 211.8 MB in the end (delta: 130.0 MB). Free memory was 60.8 MB in the beginning and 150.3 MB in the end (delta: -89.5 MB). Peak memory consumption was 39.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:33:43,112 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 81.8 MB. Free memory was 57.6 MB in the beginning and 57.5 MB in the end (delta: 115.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:33:43,112 INFO L168 Benchmark]: CACSL2BoogieTranslator took 440.67 ms. Allocated memory is still 81.8 MB. Free memory was 60.6 MB in the beginning and 55.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 28.2 MB. Max. memory is 16.1 GB. [2020-12-09 12:33:43,113 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.85 ms. Allocated memory is still 81.8 MB. Free memory was 55.6 MB in the beginning and 50.1 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 12:33:43,113 INFO L168 Benchmark]: Boogie Preprocessor took 44.60 ms. Allocated memory is still 81.8 MB. Free memory was 50.1 MB in the beginning and 45.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 12:33:43,113 INFO L168 Benchmark]: RCFGBuilder took 1319.34 ms. Allocated memory was 81.8 MB in the beginning and 121.6 MB in the end (delta: 39.8 MB). Free memory was 45.5 MB in the beginning and 54.4 MB in the end (delta: -8.9 MB). Peak memory consumption was 36.2 MB. Max. memory is 16.1 GB. [2020-12-09 12:33:43,113 INFO L168 Benchmark]: TraceAbstraction took 4495.50 ms. Allocated memory was 121.6 MB in the beginning and 211.8 MB in the end (delta: 90.2 MB). Free memory was 54.4 MB in the beginning and 166.0 MB in the end (delta: -111.6 MB). Peak memory consumption was 86.4 MB. Max. memory is 16.1 GB. [2020-12-09 12:33:43,114 INFO L168 Benchmark]: Witness Printer took 113.55 ms. Allocated memory is still 211.8 MB. Free memory was 166.0 MB in the beginning and 150.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 12:33:43,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 81.8 MB. Free memory was 57.6 MB in the beginning and 57.5 MB in the end (delta: 115.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 440.67 ms. Allocated memory is still 81.8 MB. Free memory was 60.6 MB in the beginning and 55.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 28.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.85 ms. Allocated memory is still 81.8 MB. Free memory was 55.6 MB in the beginning and 50.1 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.60 ms. Allocated memory is still 81.8 MB. Free memory was 50.1 MB in the beginning and 45.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1319.34 ms. Allocated memory was 81.8 MB in the beginning and 121.6 MB in the end (delta: 39.8 MB). Free memory was 45.5 MB in the beginning and 54.4 MB in the end (delta: -8.9 MB). Peak memory consumption was 36.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4495.50 ms. Allocated memory was 121.6 MB in the beginning and 211.8 MB in the end (delta: 90.2 MB). Free memory was 54.4 MB in the beginning and 166.0 MB in the end (delta: -111.6 MB). Peak memory consumption was 86.4 MB. Max. memory is 16.1 GB. * Witness Printer took 113.55 ms. Allocated memory is still 211.8 MB. Free memory was 166.0 MB in the beginning and 150.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 522]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((a16 <= 5 || (a20 == 1 && a8 <= 13)) || (a21 == 1 && a20 == 1)) || 15 <= a8 - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((a16 <= 5 || (a20 == 1 && a8 <= 13)) || (a21 == 1 && a20 == 1)) || 15 <= a8 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 10, TraceHistogramMax: 5, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 421 SDtfs, 791 SDslu, 49 SDs, 0 SdLazy, 2409 SolverSat, 698 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 263 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1210occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 712 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 57 NumberOfFragments, 43 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1554 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 68 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 1035 NumberOfCodeBlocks, 1035 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1143 ConstructedInterpolants, 0 QuantifiedInterpolants, 235720 SizeOfPredicates, 0 NumberOfNonLiveVariables, 366 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 12 InterpolantComputations, 11 PerfectInterpolantSequences, 435/438 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...