./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label02.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_6a52b87b-c413-453d-ae38-30e9385b6f77/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6a52b87b-c413-453d-ae38-30e9385b6f77/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6a52b87b-c413-453d-ae38-30e9385b6f77/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6a52b87b-c413-453d-ae38-30e9385b6f77/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label02.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6a52b87b-c413-453d-ae38-30e9385b6f77/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6a52b87b-c413-453d-ae38-30e9385b6f77/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 203014188672df6ecb5502efd1e8042fd4aedfd2 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 07:08:10,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 07:08:10,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 07:08:10,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 07:08:10,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 07:08:10,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 07:08:10,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 07:08:10,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 07:08:10,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 07:08:10,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 07:08:10,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 07:08:10,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 07:08:10,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 07:08:10,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 07:08:10,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 07:08:10,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 07:08:10,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 07:08:10,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 07:08:10,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 07:08:10,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 07:08:10,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 07:08:10,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 07:08:10,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 07:08:10,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 07:08:10,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 07:08:10,151 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 07:08:10,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 07:08:10,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 07:08:10,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 07:08:10,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 07:08:10,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 07:08:10,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 07:08:10,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 07:08:10,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 07:08:10,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 07:08:10,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 07:08:10,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 07:08:10,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 07:08:10,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 07:08:10,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 07:08:10,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 07:08:10,160 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6a52b87b-c413-453d-ae38-30e9385b6f77/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 07:08:10,176 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 07:08:10,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 07:08:10,177 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 07:08:10,177 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 07:08:10,177 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 07:08:10,177 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 07:08:10,177 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 07:08:10,177 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 07:08:10,178 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 07:08:10,178 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 07:08:10,178 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 07:08:10,178 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 07:08:10,178 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 07:08:10,178 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 07:08:10,178 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 07:08:10,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 07:08:10,179 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 07:08:10,179 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 07:08:10,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 07:08:10,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 07:08:10,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 07:08:10,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 07:08:10,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 07:08:10,179 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 07:08:10,180 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 07:08:10,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 07:08:10,180 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 07:08:10,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 07:08:10,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 07:08:10,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 07:08:10,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:08:10,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 07:08:10,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 07:08:10,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 07:08:10,181 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 07:08:10,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 07:08:10,181 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 07:08:10,181 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 07:08:10,181 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 07:08:10,181 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_6a52b87b-c413-453d-ae38-30e9385b6f77/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6a52b87b-c413-453d-ae38-30e9385b6f77/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 203014188672df6ecb5502efd1e8042fd4aedfd2 [2020-12-09 07:08:10,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 07:08:10,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 07:08:10,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 07:08:10,387 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 07:08:10,387 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 07:08:10,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6a52b87b-c413-453d-ae38-30e9385b6f77/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label02.c [2020-12-09 07:08:10,427 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6a52b87b-c413-453d-ae38-30e9385b6f77/bin/utaipan/data/16c14c764/919c74b6f42f4163ba1e7a545907f116/FLAGc974e18df [2020-12-09 07:08:10,865 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 07:08:10,865 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6a52b87b-c413-453d-ae38-30e9385b6f77/sv-benchmarks/c/eca-rers2012/Problem02_label02.c [2020-12-09 07:08:10,876 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6a52b87b-c413-453d-ae38-30e9385b6f77/bin/utaipan/data/16c14c764/919c74b6f42f4163ba1e7a545907f116/FLAGc974e18df [2020-12-09 07:08:11,222 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6a52b87b-c413-453d-ae38-30e9385b6f77/bin/utaipan/data/16c14c764/919c74b6f42f4163ba1e7a545907f116 [2020-12-09 07:08:11,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 07:08:11,225 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 07:08:11,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 07:08:11,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 07:08:11,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 07:08:11,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:08:11" (1/1) ... [2020-12-09 07:08:11,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@109e17b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:11, skipping insertion in model container [2020-12-09 07:08:11,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:08:11" (1/1) ... [2020-12-09 07:08:11,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 07:08:11,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 07:08:11,493 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_6a52b87b-c413-453d-ae38-30e9385b6f77/sv-benchmarks/c/eca-rers2012/Problem02_label02.c[15989,16002] [2020-12-09 07:08:11,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:08:11,527 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 07:08:11,577 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_6a52b87b-c413-453d-ae38-30e9385b6f77/sv-benchmarks/c/eca-rers2012/Problem02_label02.c[15989,16002] [2020-12-09 07:08:11,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:08:11,599 INFO L208 MainTranslator]: Completed translation [2020-12-09 07:08:11,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:11 WrapperNode [2020-12-09 07:08:11,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 07:08:11,601 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 07:08:11,601 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 07:08:11,601 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 07:08:11,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:11" (1/1) ... [2020-12-09 07:08:11,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:11" (1/1) ... [2020-12-09 07:08:11,667 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 07:08:11,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 07:08:11,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 07:08:11,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 07:08:11,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:11" (1/1) ... [2020-12-09 07:08:11,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:11" (1/1) ... [2020-12-09 07:08:11,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:11" (1/1) ... [2020-12-09 07:08:11,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:11" (1/1) ... [2020-12-09 07:08:11,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:11" (1/1) ... [2020-12-09 07:08:11,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:11" (1/1) ... [2020-12-09 07:08:11,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:11" (1/1) ... [2020-12-09 07:08:11,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 07:08:11,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 07:08:11,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 07:08:11,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 07:08:11,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a52b87b-c413-453d-ae38-30e9385b6f77/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 07:08:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 07:08:11,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 07:08:11,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 07:08:11,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 07:08:13,069 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 07:08:13,070 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 07:08:13,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:08:13 BoogieIcfgContainer [2020-12-09 07:08:13,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 07:08:13,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 07:08:13,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 07:08:13,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 07:08:13,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:08:11" (1/3) ... [2020-12-09 07:08:13,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@535acc8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:08:13, skipping insertion in model container [2020-12-09 07:08:13,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:08:11" (2/3) ... [2020-12-09 07:08:13,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@535acc8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:08:13, skipping insertion in model container [2020-12-09 07:08:13,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:08:13" (3/3) ... [2020-12-09 07:08:13,078 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label02.c [2020-12-09 07:08:13,088 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 07:08:13,091 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 07:08:13,098 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 07:08:13,115 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 07:08:13,115 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 07:08:13,116 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 07:08:13,116 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 07:08:13,116 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 07:08:13,116 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 07:08:13,116 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 07:08:13,116 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 07:08:13,126 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-12-09 07:08:13,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 07:08:13,132 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:08:13,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:08:13,133 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:08:13,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:08:13,137 INFO L82 PathProgramCache]: Analyzing trace with hash 925942854, now seen corresponding path program 1 times [2020-12-09 07:08:13,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:08:13,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245024931] [2020-12-09 07:08:13,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:08:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:08:13,400 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 07:08:13,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245024931] [2020-12-09 07:08:13,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:08:13,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:08:13,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795870150] [2020-12-09 07:08:13,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:08:13,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:08:13,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:08:13,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:08:13,420 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-12-09 07:08:13,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:08:13,785 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-12-09 07:08:13,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:08:13,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 07:08:13,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:08:13,795 INFO L225 Difference]: With dead ends: 251 [2020-12-09 07:08:13,795 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 07:08:13,797 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 07:08:13,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 07:08:13,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 07:08:13,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 07:08:13,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2020-12-09 07:08:13,833 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2020-12-09 07:08:13,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:08:13,834 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2020-12-09 07:08:13,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:08:13,834 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2020-12-09 07:08:13,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-09 07:08:13,837 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:08:13,837 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:08:13,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 07:08:13,838 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:08:13,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:08:13,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1427754354, now seen corresponding path program 1 times [2020-12-09 07:08:13,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:08:13,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667940926] [2020-12-09 07:08:13,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:08:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:08:13,889 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:08:13,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667940926] [2020-12-09 07:08:13,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:08:13,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:08:13,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133841399] [2020-12-09 07:08:13,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:08:13,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:08:13,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:08:13,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:08:13,893 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand 3 states. [2020-12-09 07:08:14,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:08:14,066 INFO L93 Difference]: Finished difference Result 325 states and 625 transitions. [2020-12-09 07:08:14,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:08:14,067 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-09 07:08:14,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:08:14,069 INFO L225 Difference]: With dead ends: 325 [2020-12-09 07:08:14,069 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 07:08:14,071 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 07:08:14,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 07:08:14,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 07:08:14,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 07:08:14,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 283 transitions. [2020-12-09 07:08:14,085 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 283 transitions. Word has length 91 [2020-12-09 07:08:14,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:08:14,086 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 283 transitions. [2020-12-09 07:08:14,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:08:14,086 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 283 transitions. [2020-12-09 07:08:14,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-09 07:08:14,088 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:08:14,088 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:08:14,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 07:08:14,089 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:08:14,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:08:14,090 INFO L82 PathProgramCache]: Analyzing trace with hash 221743333, now seen corresponding path program 1 times [2020-12-09 07:08:14,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:08:14,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100758080] [2020-12-09 07:08:14,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:08:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:08:14,158 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:08:14,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100758080] [2020-12-09 07:08:14,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:08:14,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:08:14,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013443149] [2020-12-09 07:08:14,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:08:14,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:08:14,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:08:14,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:08:14,160 INFO L87 Difference]: Start difference. First operand 163 states and 283 transitions. Second operand 3 states. [2020-12-09 07:08:14,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:08:14,417 INFO L93 Difference]: Finished difference Result 485 states and 846 transitions. [2020-12-09 07:08:14,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:08:14,418 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-09 07:08:14,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:08:14,420 INFO L225 Difference]: With dead ends: 485 [2020-12-09 07:08:14,420 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 07:08:14,421 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 07:08:14,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 07:08:14,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 243. [2020-12-09 07:08:14,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-12-09 07:08:14,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 373 transitions. [2020-12-09 07:08:14,432 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 373 transitions. Word has length 98 [2020-12-09 07:08:14,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:08:14,433 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 373 transitions. [2020-12-09 07:08:14,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:08:14,433 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 373 transitions. [2020-12-09 07:08:14,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-09 07:08:14,435 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:08:14,435 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:08:14,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 07:08:14,435 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:08:14,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:08:14,436 INFO L82 PathProgramCache]: Analyzing trace with hash -2134439810, now seen corresponding path program 1 times [2020-12-09 07:08:14,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:08:14,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606011358] [2020-12-09 07:08:14,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:08:14,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:08:14,485 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:08:14,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606011358] [2020-12-09 07:08:14,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:08:14,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:08:14,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676464171] [2020-12-09 07:08:14,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:08:14,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:08:14,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:08:14,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:08:14,487 INFO L87 Difference]: Start difference. First operand 243 states and 373 transitions. Second operand 3 states. [2020-12-09 07:08:14,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:08:14,742 INFO L93 Difference]: Finished difference Result 565 states and 885 transitions. [2020-12-09 07:08:14,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:08:14,743 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-09 07:08:14,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:08:14,744 INFO L225 Difference]: With dead ends: 565 [2020-12-09 07:08:14,744 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 07:08:14,745 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 07:08:14,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 07:08:14,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 07:08:14,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 07:08:14,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 493 transitions. [2020-12-09 07:08:14,765 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 493 transitions. Word has length 103 [2020-12-09 07:08:14,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:08:14,766 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 493 transitions. [2020-12-09 07:08:14,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:08:14,766 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 493 transitions. [2020-12-09 07:08:14,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-09 07:08:14,768 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:08:14,768 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:08:14,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 07:08:14,768 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:08:14,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:08:14,769 INFO L82 PathProgramCache]: Analyzing trace with hash -2118182328, now seen corresponding path program 1 times [2020-12-09 07:08:14,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:08:14,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864845994] [2020-12-09 07:08:14,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:08:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:08:14,916 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:08:14,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864845994] [2020-12-09 07:08:14,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216352833] [2020-12-09 07:08:14,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a52b87b-c413-453d-ae38-30e9385b6f77/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 07:08:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:08:14,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 07:08:14,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:08:15,104 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 07:08:15,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:08:15,198 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 07:08:15,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 07:08:15,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 07:08:15,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298308423] [2020-12-09 07:08:15,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:08:15,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:08:15,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:08:15,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 07:08:15,200 INFO L87 Difference]: Start difference. First operand 323 states and 493 transitions. Second operand 3 states. [2020-12-09 07:08:15,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:08:15,508 INFO L93 Difference]: Finished difference Result 885 states and 1336 transitions. [2020-12-09 07:08:15,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:08:15,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-09 07:08:15,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:08:15,512 INFO L225 Difference]: With dead ends: 885 [2020-12-09 07:08:15,512 INFO L226 Difference]: Without dead ends: 563 [2020-12-09 07:08:15,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 07:08:15,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-12-09 07:08:15,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2020-12-09 07:08:15,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-12-09 07:08:15,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 683 transitions. [2020-12-09 07:08:15,528 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 683 transitions. Word has length 107 [2020-12-09 07:08:15,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:08:15,529 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 683 transitions. [2020-12-09 07:08:15,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:08:15,529 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 683 transitions. [2020-12-09 07:08:15,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-09 07:08:15,531 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:08:15,531 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:08:15,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:08:15,733 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:08:15,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:08:15,734 INFO L82 PathProgramCache]: Analyzing trace with hash -440311406, now seen corresponding path program 1 times [2020-12-09 07:08:15,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:08:15,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668922293] [2020-12-09 07:08:15,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:08:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:08:15,873 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 07:08:15,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668922293] [2020-12-09 07:08:15,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:08:15,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:08:15,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469727956] [2020-12-09 07:08:15,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:08:15,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:08:15,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:08:15,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:08:15,875 INFO L87 Difference]: Start difference. First operand 483 states and 683 transitions. Second operand 3 states. [2020-12-09 07:08:16,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:08:16,130 INFO L93 Difference]: Finished difference Result 1205 states and 1716 transitions. [2020-12-09 07:08:16,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:08:16,131 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-12-09 07:08:16,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:08:16,135 INFO L225 Difference]: With dead ends: 1205 [2020-12-09 07:08:16,135 INFO L226 Difference]: Without dead ends: 723 [2020-12-09 07:08:16,136 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 07:08:16,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-12-09 07:08:16,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2020-12-09 07:08:16,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-12-09 07:08:16,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 954 transitions. [2020-12-09 07:08:16,153 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 954 transitions. Word has length 111 [2020-12-09 07:08:16,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:08:16,153 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 954 transitions. [2020-12-09 07:08:16,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:08:16,154 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 954 transitions. [2020-12-09 07:08:16,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-09 07:08:16,156 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:08:16,156 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-09 07:08:16,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 07:08:16,156 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:08:16,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:08:16,157 INFO L82 PathProgramCache]: Analyzing trace with hash 964810801, now seen corresponding path program 1 times [2020-12-09 07:08:16,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:08:16,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583083043] [2020-12-09 07:08:16,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:08:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:08:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 07:08:16,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583083043] [2020-12-09 07:08:16,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:08:16,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:08:16,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137470857] [2020-12-09 07:08:16,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:08:16,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:08:16,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:08:16,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:08:16,225 INFO L87 Difference]: Start difference. First operand 723 states and 954 transitions. Second operand 3 states. [2020-12-09 07:08:16,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:08:16,542 INFO L93 Difference]: Finished difference Result 1605 states and 2097 transitions. [2020-12-09 07:08:16,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:08:16,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-12-09 07:08:16,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:08:16,547 INFO L225 Difference]: With dead ends: 1605 [2020-12-09 07:08:16,547 INFO L226 Difference]: Without dead ends: 723 [2020-12-09 07:08:16,549 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 07:08:16,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-12-09 07:08:16,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 643. [2020-12-09 07:08:16,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-12-09 07:08:16,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 784 transitions. [2020-12-09 07:08:16,569 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 784 transitions. Word has length 171 [2020-12-09 07:08:16,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:08:16,569 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 784 transitions. [2020-12-09 07:08:16,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:08:16,569 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 784 transitions. [2020-12-09 07:08:16,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-12-09 07:08:16,573 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:08:16,573 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-12-09 07:08:16,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 07:08:16,573 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:08:16,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:08:16,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1743256502, now seen corresponding path program 1 times [2020-12-09 07:08:16,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:08:16,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050424879] [2020-12-09 07:08:16,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:08:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:08:16,641 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-12-09 07:08:16,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050424879] [2020-12-09 07:08:16,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:08:16,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:08:16,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6730415] [2020-12-09 07:08:16,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:08:16,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:08:16,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:08:16,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:08:16,643 INFO L87 Difference]: Start difference. First operand 643 states and 784 transitions. Second operand 3 states. [2020-12-09 07:08:16,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:08:16,942 INFO L93 Difference]: Finished difference Result 1605 states and 1979 transitions. [2020-12-09 07:08:16,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:08:16,943 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2020-12-09 07:08:16,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:08:16,947 INFO L225 Difference]: With dead ends: 1605 [2020-12-09 07:08:16,948 INFO L226 Difference]: Without dead ends: 803 [2020-12-09 07:08:16,949 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 07:08:16,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-12-09 07:08:16,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 723. [2020-12-09 07:08:16,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-12-09 07:08:16,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 810 transitions. [2020-12-09 07:08:16,967 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 810 transitions. Word has length 181 [2020-12-09 07:08:16,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:08:16,967 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 810 transitions. [2020-12-09 07:08:16,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:08:16,967 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 810 transitions. [2020-12-09 07:08:16,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-12-09 07:08:16,970 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:08:16,970 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:16,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 07:08:16,971 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:08:16,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:08:16,971 INFO L82 PathProgramCache]: Analyzing trace with hash -973981049, now seen corresponding path program 1 times [2020-12-09 07:08:16,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:08:16,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582847024] [2020-12-09 07:08:16,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:08:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:08:17,036 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2020-12-09 07:08:17,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582847024] [2020-12-09 07:08:17,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:08:17,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:08:17,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049121087] [2020-12-09 07:08:17,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:08:17,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:08:17,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:08:17,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:08:17,038 INFO L87 Difference]: Start difference. First operand 723 states and 810 transitions. Second operand 3 states. [2020-12-09 07:08:17,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:08:17,261 INFO L93 Difference]: Finished difference Result 1683 states and 1884 transitions. [2020-12-09 07:08:17,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:08:17,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-12-09 07:08:17,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:08:17,262 INFO L225 Difference]: With dead ends: 1683 [2020-12-09 07:08:17,262 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 07:08:17,263 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 07:08:17,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 07:08:17,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 07:08:17,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 07:08:17,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 07:08:17,264 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 217 [2020-12-09 07:08:17,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:08:17,264 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 07:08:17,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:08:17,264 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 07:08:17,264 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 07:08:17,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 07:08:17,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 07:08:17,434 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-12-09 07:08:17,434 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-12-09 07:08:17,435 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-12-09 07:08:17,435 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-12-09 07:08:17,435 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-12-09 07:08:17,435 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-12-09 07:08:17,435 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-12-09 07:08:17,435 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-12-09 07:08:17,435 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-12-09 07:08:17,435 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-12-09 07:08:17,435 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-12-09 07:08:17,435 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-12-09 07:08:17,436 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-12-09 07:08:17,436 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-12-09 07:08:17,436 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-12-09 07:08:17,436 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-12-09 07:08:17,436 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-12-09 07:08:17,436 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-12-09 07:08:17,436 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-12-09 07:08:17,436 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-12-09 07:08:17,436 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-12-09 07:08:17,436 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-12-09 07:08:17,437 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-12-09 07:08:17,437 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-12-09 07:08:17,437 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-12-09 07:08:17,437 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-12-09 07:08:17,437 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 07:08:17,437 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-12-09 07:08:17,437 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-12-09 07:08:17,437 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-12-09 07:08:17,437 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-12-09 07:08:17,437 INFO L262 CegarLoopResult]: For program point L457-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 07:08:17,438 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-12-09 07:08:17,438 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-12-09 07:08:17,438 INFO L262 CegarLoopResult]: For program point L460-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 07:08:17,438 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-12-09 07:08:17,438 INFO L262 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-12-09 07:08:17,438 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-12-09 07:08:17,438 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-12-09 07:08:17,438 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 461) no Hoare annotation was computed. [2020-12-09 07:08:17,438 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-12-09 07:08:17,438 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-12-09 07:08:17,438 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-12-09 07:08:17,438 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-12-09 07:08:17,439 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-12-09 07:08:17,439 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-12-09 07:08:17,439 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-12-09 07:08:17,439 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-12-09 07:08:17,439 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-12-09 07:08:17,439 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-12-09 07:08:17,439 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-12-09 07:08:17,439 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-12-09 07:08:17,439 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-12-09 07:08:17,439 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-12-09 07:08:17,439 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-12-09 07:08:17,439 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-12-09 07:08:17,440 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 7)) (.cse1 (<= ~a28~0 10)) (.cse3 (<= 8 ~a17~0)) (.cse4 (= ~a25~0 1)) (.cse2 (<= ~a17~0 8))) (or (and (<= 10 ~a28~0) .cse0 .cse1) (and (<= ~a19~0 0) .cse2 .cse1) (and .cse3 .cse2 .cse1) (and (<= ~a28~0 7) .cse2) (and .cse4 .cse0 .cse1) (and (= ~a19~0 1) .cse3 .cse4 .cse2))) [2020-12-09 07:08:17,440 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-12-09 07:08:17,440 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-12-09 07:08:17,440 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-12-09 07:08:17,440 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-12-09 07:08:17,440 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-12-09 07:08:17,440 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-12-09 07:08:17,441 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-12-09 07:08:17,441 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-12-09 07:08:17,441 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 07:08:17,441 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-12-09 07:08:17,441 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-12-09 07:08:17,441 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 7)) (.cse1 (<= ~a28~0 10)) (.cse3 (<= 8 ~a17~0)) (.cse4 (= ~a25~0 1)) (.cse2 (<= ~a17~0 8))) (or (and (<= 10 ~a28~0) .cse0 .cse1) (and (<= ~a19~0 0) .cse2 .cse1) (and .cse3 .cse2 .cse1) (and (<= ~a28~0 7) .cse2) (and .cse4 .cse0 .cse1) (and (= ~a19~0 1) .cse3 .cse4 .cse2))) [2020-12-09 07:08:17,441 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-12-09 07:08:17,441 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-12-09 07:08:17,441 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-12-09 07:08:17,441 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-12-09 07:08:17,441 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-12-09 07:08:17,442 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-12-09 07:08:17,442 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-12-09 07:08:17,442 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-12-09 07:08:17,442 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-12-09 07:08:17,442 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-12-09 07:08:17,442 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-12-09 07:08:17,442 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-12-09 07:08:17,442 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-12-09 07:08:17,442 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-12-09 07:08:17,442 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-12-09 07:08:17,442 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-12-09 07:08:17,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:08:17 BoogieIcfgContainer [2020-12-09 07:08:17,458 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 07:08:17,458 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 07:08:17,458 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 07:08:17,459 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 07:08:17,459 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:08:13" (3/4) ... [2020-12-09 07:08:17,461 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 07:08:17,481 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-12-09 07:08:17,483 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-12-09 07:08:17,484 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-12-09 07:08:17,485 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 07:08:17,582 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6a52b87b-c413-453d-ae38-30e9385b6f77/bin/utaipan/witness.graphml [2020-12-09 07:08:17,582 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 07:08:17,583 INFO L168 Benchmark]: Toolchain (without parser) took 6357.00 ms. Allocated memory was 94.4 MB in the beginning and 197.1 MB in the end (delta: 102.8 MB). Free memory was 58.4 MB in the beginning and 69.6 MB in the end (delta: -11.2 MB). Peak memory consumption was 91.8 MB. Max. memory is 16.1 GB. [2020-12-09 07:08:17,583 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 94.4 MB. Free memory is still 76.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:08:17,583 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.35 ms. Allocated memory is still 94.4 MB. Free memory was 58.3 MB in the beginning and 55.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. [2020-12-09 07:08:17,584 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.10 ms. Allocated memory is still 94.4 MB. Free memory was 55.8 MB in the beginning and 50.5 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 07:08:17,584 INFO L168 Benchmark]: Boogie Preprocessor took 45.85 ms. Allocated memory is still 94.4 MB. Free memory was 50.2 MB in the beginning and 46.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 07:08:17,584 INFO L168 Benchmark]: RCFGBuilder took 1357.86 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 46.0 MB in the beginning and 77.5 MB in the end (delta: -31.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 16.1 GB. [2020-12-09 07:08:17,584 INFO L168 Benchmark]: TraceAbstraction took 4385.11 ms. Allocated memory was 136.3 MB in the beginning and 197.1 MB in the end (delta: 60.8 MB). Free memory was 76.5 MB in the beginning and 85.5 MB in the end (delta: -9.0 MB). Peak memory consumption was 50.8 MB. Max. memory is 16.1 GB. [2020-12-09 07:08:17,585 INFO L168 Benchmark]: Witness Printer took 123.58 ms. Allocated memory is still 197.1 MB. Free memory was 85.5 MB in the beginning and 69.6 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-09 07:08:17,586 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 94.4 MB. Free memory is still 76.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 373.35 ms. Allocated memory is still 94.4 MB. Free memory was 58.3 MB in the beginning and 55.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 10.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.10 ms. Allocated memory is still 94.4 MB. Free memory was 55.8 MB in the beginning and 50.5 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.85 ms. Allocated memory is still 94.4 MB. Free memory was 50.2 MB in the beginning and 46.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1357.86 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 46.0 MB in the beginning and 77.5 MB in the end (delta: -31.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4385.11 ms. Allocated memory was 136.3 MB in the beginning and 197.1 MB in the end (delta: 60.8 MB). Free memory was 76.5 MB in the beginning and 85.5 MB in the end (delta: -9.0 MB). Peak memory consumption was 50.8 MB. Max. memory is 16.1 GB. * Witness Printer took 123.58 ms. Allocated memory is still 197.1 MB. Free memory was 85.5 MB in the beginning and 69.6 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 461]: 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: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((10 <= a28 && a17 <= 7) && a28 <= 10) || ((a19 <= 0 && a17 <= 8) && a28 <= 10)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (a28 <= 7 && a17 <= 8)) || ((a25 == 1 && a17 <= 7) && a28 <= 10)) || (((a19 == 1 && 8 <= a17) && a25 == 1) && a17 <= 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((10 <= a28 && a17 <= 7) && a28 <= 10) || ((a19 <= 0 && a17 <= 8) && a28 <= 10)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (a28 <= 7 && a17 <= 8)) || ((a25 == 1 && a17 <= 7) && a28 <= 10)) || (((a19 == 1 && 8 <= a17) && a25 == 1) && a17 <= 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.1s, OverallIterations: 9, TraceHistogramMax: 7, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 640 SDtfs, 563 SDslu, 40 SDs, 0 SdLazy, 1844 SolverSat, 491 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 236 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=723occurred 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 320 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 37 NumberOfFragments, 123 HoareAnnotationTreeSize, 3 FomulaSimplifications, 610 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 1266 NumberOfCodeBlocks, 1266 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1362 ConstructedInterpolants, 0 QuantifiedInterpolants, 467020 SizeOfPredicates, 0 NumberOfNonLiveVariables, 263 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 792/808 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...