./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label36.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_0baa6bde-190c-4f52-847e-920ea4b3f4e9/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0baa6bde-190c-4f52-847e-920ea4b3f4e9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0baa6bde-190c-4f52-847e-920ea4b3f4e9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0baa6bde-190c-4f52-847e-920ea4b3f4e9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label36.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0baa6bde-190c-4f52-847e-920ea4b3f4e9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0baa6bde-190c-4f52-847e-920ea4b3f4e9/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 0fa76a6c7489c66a6823a63202c7e3f27a163183 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:02:53,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:02:53,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:02:53,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:02:53,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:02:53,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:02:53,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:02:53,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:02:53,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:02:53,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:02:53,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:02:53,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:02:53,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:02:53,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:02:53,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:02:53,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:02:53,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:02:53,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:02:53,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:02:53,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:02:53,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:02:53,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:02:53,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:02:53,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:02:53,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:02:53,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:02:53,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:02:53,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:02:53,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:02:53,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:02:53,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:02:53,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:02:53,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:02:53,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:02:53,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:02:53,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:02:53,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:02:53,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:02:53,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:02:53,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:02:53,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:02:53,172 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0baa6bde-190c-4f52-847e-920ea4b3f4e9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 19:02:53,189 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:02:53,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:02:53,190 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:02:53,190 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:02:53,190 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:02:53,190 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:02:53,190 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 19:02:53,190 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:02:53,190 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:02:53,191 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 19:02:53,191 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 19:02:53,191 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:02:53,191 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 19:02:53,191 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 19:02:53,191 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 19:02:53,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:02:53,192 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:02:53,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 19:02:53,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:02:53,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:02:53,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:02:53,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:02:53,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:02:53,193 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:02:53,193 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:02:53,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:02:53,193 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:02:53,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:02:53,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:02:53,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:02:53,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:02:53,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:02:53,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:02:53,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:02:53,194 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 19:02:53,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 19:02:53,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:02:53,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:02:53,195 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:02:53,195 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_0baa6bde-190c-4f52-847e-920ea4b3f4e9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0baa6bde-190c-4f52-847e-920ea4b3f4e9/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fa76a6c7489c66a6823a63202c7e3f27a163183 [2020-12-09 19:02:53,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:02:53,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:02:53,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:02:53,400 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:02:53,401 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:02:53,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0baa6bde-190c-4f52-847e-920ea4b3f4e9/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label36.c [2020-12-09 19:02:53,442 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0baa6bde-190c-4f52-847e-920ea4b3f4e9/bin/utaipan/data/0e33eeaf6/612e7f9a1ab7454a8c3ac1749b1ae680/FLAGa7e8f83ad [2020-12-09 19:02:53,873 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:02:53,873 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0baa6bde-190c-4f52-847e-920ea4b3f4e9/sv-benchmarks/c/eca-rers2012/Problem02_label36.c [2020-12-09 19:02:53,883 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0baa6bde-190c-4f52-847e-920ea4b3f4e9/bin/utaipan/data/0e33eeaf6/612e7f9a1ab7454a8c3ac1749b1ae680/FLAGa7e8f83ad [2020-12-09 19:02:53,895 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0baa6bde-190c-4f52-847e-920ea4b3f4e9/bin/utaipan/data/0e33eeaf6/612e7f9a1ab7454a8c3ac1749b1ae680 [2020-12-09 19:02:53,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:02:53,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:02:53,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:02:53,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:02:53,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:02:53,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:02:53" (1/1) ... [2020-12-09 19:02:53,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f60dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:53, skipping insertion in model container [2020-12-09 19:02:53,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:02:53" (1/1) ... [2020-12-09 19:02:53,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:02:53,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:02:54,186 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_0baa6bde-190c-4f52-847e-920ea4b3f4e9/sv-benchmarks/c/eca-rers2012/Problem02_label36.c[20425,20438] [2020-12-09 19:02:54,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:02:54,210 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:02:54,281 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_0baa6bde-190c-4f52-847e-920ea4b3f4e9/sv-benchmarks/c/eca-rers2012/Problem02_label36.c[20425,20438] [2020-12-09 19:02:54,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:02:54,301 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:02:54,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:54 WrapperNode [2020-12-09 19:02:54,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:02:54,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:02:54,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:02:54,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:02:54,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:54" (1/1) ... [2020-12-09 19:02:54,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:54" (1/1) ... [2020-12-09 19:02:54,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:02:54,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:02:54,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:02:54,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:02:54,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:54" (1/1) ... [2020-12-09 19:02:54,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:54" (1/1) ... [2020-12-09 19:02:54,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:54" (1/1) ... [2020-12-09 19:02:54,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:54" (1/1) ... [2020-12-09 19:02:54,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:54" (1/1) ... [2020-12-09 19:02:54,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:54" (1/1) ... [2020-12-09 19:02:54,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:54" (1/1) ... [2020-12-09 19:02:54,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:02:54,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:02:54,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:02:54,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:02:54,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0baa6bde-190c-4f52-847e-920ea4b3f4e9/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 19:02:54,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 19:02:54,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:02:54,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:02:54,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:02:55,795 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:02:55,795 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 19:02:55,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:02:55 BoogieIcfgContainer [2020-12-09 19:02:55,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:02:55,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:02:55,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:02:55,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:02:55,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:02:53" (1/3) ... [2020-12-09 19:02:55,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44577557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:02:55, skipping insertion in model container [2020-12-09 19:02:55,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:02:54" (2/3) ... [2020-12-09 19:02:55,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44577557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:02:55, skipping insertion in model container [2020-12-09 19:02:55,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:02:55" (3/3) ... [2020-12-09 19:02:55,804 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label36.c [2020-12-09 19:02:55,814 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:02:55,817 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 19:02:55,824 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 19:02:55,843 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:02:55,844 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:02:55,844 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:02:55,844 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:02:55,844 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:02:55,844 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:02:55,844 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:02:55,845 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:02:55,856 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-12-09 19:02:55,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 19:02:55,862 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:02:55,862 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 19:02:55,863 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:02:55,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:02:55,867 INFO L82 PathProgramCache]: Analyzing trace with hash 925961487, now seen corresponding path program 1 times [2020-12-09 19:02:55,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:02:55,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792712909] [2020-12-09 19:02:55,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:02:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:02:56,135 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 19:02:56,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792712909] [2020-12-09 19:02:56,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:02:56,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:02:56,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716834873] [2020-12-09 19:02:56,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:02:56,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:02:56,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:02:56,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:02:56,157 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-12-09 19:02:56,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:02:56,498 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-12-09 19:02:56,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:02:56,499 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 19:02:56,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:02:56,507 INFO L225 Difference]: With dead ends: 251 [2020-12-09 19:02:56,508 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 19:02:56,510 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 19:02:56,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 19:02:56,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 19:02:56,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 19:02:56,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 253 transitions. [2020-12-09 19:02:56,546 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 253 transitions. Word has length 80 [2020-12-09 19:02:56,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:02:56,547 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 253 transitions. [2020-12-09 19:02:56,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:02:56,547 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 253 transitions. [2020-12-09 19:02:56,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-09 19:02:56,551 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:02:56,551 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:02:56,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 19:02:56,552 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:02:56,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:02:56,552 INFO L82 PathProgramCache]: Analyzing trace with hash -859410200, now seen corresponding path program 1 times [2020-12-09 19:02:56,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:02:56,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767427394] [2020-12-09 19:02:56,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:02:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:02:56,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 19:02:56,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767427394] [2020-12-09 19:02:56,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:02:56,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:02:56,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504130358] [2020-12-09 19:02:56,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:02:56,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:02:56,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:02:56,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:02:56,668 INFO L87 Difference]: Start difference. First operand 163 states and 253 transitions. Second operand 3 states. [2020-12-09 19:02:56,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:02:56,963 INFO L93 Difference]: Finished difference Result 325 states and 505 transitions. [2020-12-09 19:02:56,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:02:56,963 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-12-09 19:02:56,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:02:56,966 INFO L225 Difference]: With dead ends: 325 [2020-12-09 19:02:56,966 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 19:02:56,967 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 19:02:56,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 19:02:56,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 243. [2020-12-09 19:02:56,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-12-09 19:02:56,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 408 transitions. [2020-12-09 19:02:56,983 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 408 transitions. Word has length 85 [2020-12-09 19:02:56,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:02:56,984 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 408 transitions. [2020-12-09 19:02:56,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:02:56,984 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 408 transitions. [2020-12-09 19:02:56,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-09 19:02:56,987 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:02:56,987 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 19:02:56,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 19:02:56,988 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:02:56,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:02:56,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1427735721, now seen corresponding path program 1 times [2020-12-09 19:02:56,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:02:56,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66242261] [2020-12-09 19:02:56,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:02:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:02:57,044 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 19:02:57,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66242261] [2020-12-09 19:02:57,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:02:57,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:02:57,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659718554] [2020-12-09 19:02:57,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:02:57,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:02:57,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:02:57,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:02:57,046 INFO L87 Difference]: Start difference. First operand 243 states and 408 transitions. Second operand 3 states. [2020-12-09 19:02:57,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:02:57,178 INFO L93 Difference]: Finished difference Result 485 states and 815 transitions. [2020-12-09 19:02:57,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:02:57,178 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-09 19:02:57,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:02:57,179 INFO L225 Difference]: With dead ends: 485 [2020-12-09 19:02:57,180 INFO L226 Difference]: Without dead ends: 243 [2020-12-09 19:02:57,181 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 19:02:57,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-12-09 19:02:57,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2020-12-09 19:02:57,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-12-09 19:02:57,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 373 transitions. [2020-12-09 19:02:57,190 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 373 transitions. Word has length 91 [2020-12-09 19:02:57,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:02:57,190 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 373 transitions. [2020-12-09 19:02:57,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:02:57,190 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 373 transitions. [2020-12-09 19:02:57,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-09 19:02:57,192 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:02:57,192 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 19:02:57,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 19:02:57,193 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:02:57,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:02:57,193 INFO L82 PathProgramCache]: Analyzing trace with hash -2134421177, now seen corresponding path program 1 times [2020-12-09 19:02:57,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:02:57,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166465394] [2020-12-09 19:02:57,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:02:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:02:57,242 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 19:02:57,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166465394] [2020-12-09 19:02:57,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:02:57,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 19:02:57,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387977455] [2020-12-09 19:02:57,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:02:57,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:02:57,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:02:57,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:02:57,244 INFO L87 Difference]: Start difference. First operand 243 states and 373 transitions. Second operand 3 states. [2020-12-09 19:02:57,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:02:57,474 INFO L93 Difference]: Finished difference Result 565 states and 885 transitions. [2020-12-09 19:02:57,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:02:57,475 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-09 19:02:57,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:02:57,476 INFO L225 Difference]: With dead ends: 565 [2020-12-09 19:02:57,476 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 19:02:57,477 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 19:02:57,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 19:02:57,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 19:02:57,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 19:02:57,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 493 transitions. [2020-12-09 19:02:57,487 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 493 transitions. Word has length 103 [2020-12-09 19:02:57,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:02:57,487 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 493 transitions. [2020-12-09 19:02:57,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:02:57,487 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 493 transitions. [2020-12-09 19:02:57,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-09 19:02:57,489 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:02:57,489 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 19:02:57,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 19:02:57,489 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:02:57,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:02:57,489 INFO L82 PathProgramCache]: Analyzing trace with hash -2118163695, now seen corresponding path program 1 times [2020-12-09 19:02:57,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:02:57,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856461876] [2020-12-09 19:02:57,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:02:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:02:57,630 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 19:02:57,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856461876] [2020-12-09 19:02:57,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735489701] [2020-12-09 19:02:57,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0baa6bde-190c-4f52-847e-920ea4b3f4e9/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 19:02:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:02:57,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 19:02:57,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:02:57,829 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 19:02:57,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:02:57,909 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 19:02:57,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 19:02:57,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 19:02:57,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668002593] [2020-12-09 19:02:57,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:02:57,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:02:57,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:02:57,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 19:02:57,912 INFO L87 Difference]: Start difference. First operand 323 states and 493 transitions. Second operand 3 states. [2020-12-09 19:02:58,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:02:58,161 INFO L93 Difference]: Finished difference Result 803 states and 1204 transitions. [2020-12-09 19:02:58,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:02:58,162 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-09 19:02:58,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:02:58,162 INFO L225 Difference]: With dead ends: 803 [2020-12-09 19:02:58,162 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 19:02:58,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 19:02:58,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 19:02:58,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 19:02:58,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 19:02:58,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 19:02:58,164 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 107 [2020-12-09 19:02:58,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:02:58,164 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 19:02:58,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:02:58,165 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 19:02:58,165 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 19:02:58,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:02:58,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 19:02:58,458 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-12-09 19:02:58,458 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-12-09 19:02:58,458 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-12-09 19:02:58,458 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-12-09 19:02:58,458 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-12-09 19:02:58,458 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-12-09 19:02:58,459 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-12-09 19:02:58,459 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-12-09 19:02:58,459 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-12-09 19:02:58,459 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-12-09 19:02:58,459 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-12-09 19:02:58,459 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-12-09 19:02:58,459 INFO L262 CegarLoopResult]: For program point L574-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 19:02:58,459 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-12-09 19:02:58,459 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-12-09 19:02:58,459 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-12-09 19:02:58,459 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-12-09 19:02:58,459 INFO L262 CegarLoopResult]: For program point L577-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 19:02:58,459 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-12-09 19:02:58,459 INFO L262 CegarLoopResult]: For program point L578(line 578) no Hoare annotation was computed. [2020-12-09 19:02:58,459 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-12-09 19:02:58,459 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-12-09 19:02:58,460 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-12-09 19:02:58,460 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-12-09 19:02:58,460 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-12-09 19:02:58,460 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-12-09 19:02:58,460 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-12-09 19:02:58,460 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-12-09 19:02:58,460 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-12-09 19:02:58,460 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 19:02:58,460 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-12-09 19:02:58,460 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-12-09 19:02:58,460 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-12-09 19:02:58,460 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-12-09 19:02:58,460 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-12-09 19:02:58,460 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-12-09 19:02:58,460 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-12-09 19:02:58,460 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-12-09 19:02:58,460 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-12-09 19:02:58,461 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 578) no Hoare annotation was computed. [2020-12-09 19:02:58,461 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-12-09 19:02:58,461 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-12-09 19:02:58,461 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-12-09 19:02:58,461 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-12-09 19:02:58,461 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-12-09 19:02:58,461 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-12-09 19:02:58,461 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-12-09 19:02:58,461 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-12-09 19:02:58,461 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-12-09 19:02:58,461 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-12-09 19:02:58,461 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-12-09 19:02:58,461 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-12-09 19:02:58,461 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-12-09 19:02:58,461 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-12-09 19:02:58,461 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-12-09 19:02:58,461 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-12-09 19:02:58,462 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8))) (or (and (<= 8 ~a17~0) .cse0) (and (<= ~a28~0 7) .cse0) (and (= ~a11~0 1) .cse0 (<= ~a28~0 10)))) [2020-12-09 19:02:58,462 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-12-09 19:02:58,462 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-12-09 19:02:58,462 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-12-09 19:02:58,462 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-12-09 19:02:58,462 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-12-09 19:02:58,462 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-12-09 19:02:58,462 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-12-09 19:02:58,462 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-12-09 19:02:58,462 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 19:02:58,462 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-12-09 19:02:58,462 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-12-09 19:02:58,462 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8))) (or (and (<= 8 ~a17~0) .cse0) (and (<= ~a28~0 7) .cse0) (and (= ~a11~0 1) .cse0 (<= ~a28~0 10)))) [2020-12-09 19:02:58,462 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-12-09 19:02:58,462 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-12-09 19:02:58,463 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-12-09 19:02:58,463 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-12-09 19:02:58,463 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-12-09 19:02:58,463 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-12-09 19:02:58,463 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-12-09 19:02:58,463 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-12-09 19:02:58,463 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-12-09 19:02:58,463 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-12-09 19:02:58,463 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-12-09 19:02:58,463 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-12-09 19:02:58,463 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-12-09 19:02:58,463 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-12-09 19:02:58,463 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-12-09 19:02:58,463 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-12-09 19:02:58,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:02:58 BoogieIcfgContainer [2020-12-09 19:02:58,475 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:02:58,475 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:02:58,475 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:02:58,476 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:02:58,476 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:02:55" (3/4) ... [2020-12-09 19:02:58,478 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 19:02:58,493 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-12-09 19:02:58,495 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 19:02:58,496 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 19:02:58,497 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 19:02:58,598 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0baa6bde-190c-4f52-847e-920ea4b3f4e9/bin/utaipan/witness.graphml [2020-12-09 19:02:58,598 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:02:58,599 INFO L168 Benchmark]: Toolchain (without parser) took 4699.89 ms. Allocated memory was 98.6 MB in the beginning and 186.6 MB in the end (delta: 88.1 MB). Free memory was 66.3 MB in the beginning and 140.3 MB in the end (delta: -74.0 MB). Peak memory consumption was 49.6 MB. Max. memory is 16.1 GB. [2020-12-09 19:02:58,599 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 98.6 MB. Free memory is still 75.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:02:58,600 INFO L168 Benchmark]: CACSL2BoogieTranslator took 401.09 ms. Allocated memory is still 98.6 MB. Free memory was 66.1 MB in the beginning and 64.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. [2020-12-09 19:02:58,600 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.16 ms. Allocated memory is still 98.6 MB. Free memory was 64.7 MB in the beginning and 58.8 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 19:02:58,600 INFO L168 Benchmark]: Boogie Preprocessor took 40.23 ms. Allocated memory is still 98.6 MB. Free memory was 58.8 MB in the beginning and 54.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 19:02:58,600 INFO L168 Benchmark]: RCFGBuilder took 1400.62 ms. Allocated memory was 98.6 MB in the beginning and 155.2 MB in the end (delta: 56.6 MB). Free memory was 54.6 MB in the beginning and 117.2 MB in the end (delta: -62.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 16.1 GB. [2020-12-09 19:02:58,601 INFO L168 Benchmark]: TraceAbstraction took 2676.86 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 117.2 MB in the beginning and 111.7 MB in the end (delta: 5.5 MB). Peak memory consumption was 35.9 MB. Max. memory is 16.1 GB. [2020-12-09 19:02:58,601 INFO L168 Benchmark]: Witness Printer took 122.76 ms. Allocated memory is still 186.6 MB. Free memory was 111.7 MB in the beginning and 140.3 MB in the end (delta: -28.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 19:02:58,602 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 98.6 MB. Free memory is still 75.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 401.09 ms. Allocated memory is still 98.6 MB. Free memory was 66.1 MB in the beginning and 64.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.16 ms. Allocated memory is still 98.6 MB. Free memory was 64.7 MB in the beginning and 58.8 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.23 ms. Allocated memory is still 98.6 MB. Free memory was 58.8 MB in the beginning and 54.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1400.62 ms. Allocated memory was 98.6 MB in the beginning and 155.2 MB in the end (delta: 56.6 MB). Free memory was 54.6 MB in the beginning and 117.2 MB in the end (delta: -62.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2676.86 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 117.2 MB in the beginning and 111.7 MB in the end (delta: 5.5 MB). Peak memory consumption was 35.9 MB. Max. memory is 16.1 GB. * Witness Printer took 122.76 ms. Allocated memory is still 186.6 MB. Free memory was 111.7 MB in the beginning and 140.3 MB in the end (delta: -28.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 578]: 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: ((8 <= a17 && a17 <= 8) || (a28 <= 7 && a17 <= 8)) || ((a11 == 1 && a17 <= 8) && a28 <= 10) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((8 <= a17 && a17 <= 8) || (a28 <= 7 && a17 <= 8)) || ((a11 == 1 && a17 <= 8) && a28 <= 10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 239 SDtfs, 268 SDslu, 16 SDs, 0 SdLazy, 1020 SolverSat, 328 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 225 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=323occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 80 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 17 NumberOfFragments, 51 HoareAnnotationTreeSize, 3 FomulaSimplifications, 104 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 573 NumberOfCodeBlocks, 573 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 673 ConstructedInterpolants, 0 QuantifiedInterpolants, 305009 SizeOfPredicates, 0 NumberOfNonLiveVariables, 300 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 126/142 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...