./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e854e644-5ffc-4da7-972c-ea011f9dbe50/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e854e644-5ffc-4da7-972c-ea011f9dbe50/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e854e644-5ffc-4da7-972c-ea011f9dbe50/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e854e644-5ffc-4da7-972c-ea011f9dbe50/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label09.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e854e644-5ffc-4da7-972c-ea011f9dbe50/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e854e644-5ffc-4da7-972c-ea011f9dbe50/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 7b7b3008966aab2f6e68e04cbadc5c02c50b9074 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:01:41,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:01:41,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:01:41,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:01:41,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:01:41,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:01:41,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:01:41,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:01:41,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:01:41,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:01:41,146 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:01:41,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:01:41,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:01:41,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:01:41,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:01:41,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:01:41,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:01:41,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:01:41,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:01:41,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:01:41,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:01:41,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:01:41,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:01:41,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:01:41,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:01:41,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:01:41,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:01:41,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:01:41,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:01:41,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:01:41,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:01:41,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:01:41,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:01:41,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:01:41,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:01:41,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:01:41,189 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:01:41,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:01:41,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:01:41,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:01:41,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:01:41,193 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e854e644-5ffc-4da7-972c-ea011f9dbe50/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:01:41,219 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:01:41,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:01:41,220 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:01:41,220 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:01:41,221 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:01:41,221 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:01:41,221 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:01:41,221 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:01:41,222 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:01:41,222 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:01:41,222 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:01:41,222 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:01:41,223 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:01:41,223 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:01:41,223 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:01:41,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:01:41,224 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:01:41,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:01:41,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:01:41,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:01:41,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:01:41,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:01:41,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:01:41,226 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:01:41,226 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:01:41,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:01:41,227 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:01:41,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:01:41,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:01:41,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:01:41,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:01:41,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:01:41,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:01:41,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:01:41,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:01:41,229 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:01:41,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:01:41,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:01:41,230 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:01:41,230 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:01:41,230 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_e854e644-5ffc-4da7-972c-ea011f9dbe50/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e854e644-5ffc-4da7-972c-ea011f9dbe50/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b7b3008966aab2f6e68e04cbadc5c02c50b9074 [2020-11-22 13:01:41,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:01:41,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:01:41,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:01:41,526 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:01:41,527 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:01:41,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e854e644-5ffc-4da7-972c-ea011f9dbe50/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label09.c [2020-11-22 13:01:41,594 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e854e644-5ffc-4da7-972c-ea011f9dbe50/bin/utaipan/data/99b7c4916/b4e808624e814464aee1958ef2a4c192/FLAGd59473ab8 [2020-11-22 13:01:42,188 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:01:42,189 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e854e644-5ffc-4da7-972c-ea011f9dbe50/sv-benchmarks/c/eca-rers2012/Problem02_label09.c [2020-11-22 13:01:42,207 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e854e644-5ffc-4da7-972c-ea011f9dbe50/bin/utaipan/data/99b7c4916/b4e808624e814464aee1958ef2a4c192/FLAGd59473ab8 [2020-11-22 13:01:42,451 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e854e644-5ffc-4da7-972c-ea011f9dbe50/bin/utaipan/data/99b7c4916/b4e808624e814464aee1958ef2a4c192 [2020-11-22 13:01:42,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:01:42,455 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:01:42,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:01:42,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:01:42,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:01:42,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:01:42" (1/1) ... [2020-11-22 13:01:42,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48b6dbbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:42, skipping insertion in model container [2020-11-22 13:01:42,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:01:42" (1/1) ... [2020-11-22 13:01:42,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:01:42,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:01:42,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:01:42,928 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:01:43,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:01:43,051 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:01:43,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:43 WrapperNode [2020-11-22 13:01:43,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:01:43,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:01:43,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:01:43,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:01:43,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:43" (1/1) ... [2020-11-22 13:01:43,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:43" (1/1) ... [2020-11-22 13:01:43,154 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:01:43,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:01:43,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:01:43,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:01:43,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:43" (1/1) ... [2020-11-22 13:01:43,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:43" (1/1) ... [2020-11-22 13:01:43,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:43" (1/1) ... [2020-11-22 13:01:43,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:43" (1/1) ... [2020-11-22 13:01:43,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:43" (1/1) ... [2020-11-22 13:01:43,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:43" (1/1) ... [2020-11-22 13:01:43,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:43" (1/1) ... [2020-11-22 13:01:43,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:01:43,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:01:43,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:01:43,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:01:43,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e854e644-5ffc-4da7-972c-ea011f9dbe50/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 [2020-11-22 13:01:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:01:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:01:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:01:43,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:01:45,648 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:01:45,649 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 13:01:45,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:01:45 BoogieIcfgContainer [2020-11-22 13:01:45,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:01:45,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:01:45,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:01:45,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:01:45,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:01:42" (1/3) ... [2020-11-22 13:01:45,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41fd71d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:01:45, skipping insertion in model container [2020-11-22 13:01:45,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:01:43" (2/3) ... [2020-11-22 13:01:45,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41fd71d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:01:45, skipping insertion in model container [2020-11-22 13:01:45,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:01:45" (3/3) ... [2020-11-22 13:01:45,659 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label09.c [2020-11-22 13:01:45,670 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:01:45,675 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:01:45,686 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:01:45,710 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:01:45,711 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:01:45,711 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:01:45,711 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:01:45,711 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:01:45,711 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:01:45,712 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:01:45,712 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:01:45,727 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-22 13:01:45,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-22 13:01:45,734 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:45,735 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] [2020-11-22 13:01:45,735 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:01:45,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:45,741 INFO L82 PathProgramCache]: Analyzing trace with hash -216540912, now seen corresponding path program 1 times [2020-11-22 13:01:45,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:45,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462535318] [2020-11-22 13:01:45,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:46,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:46,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462535318] [2020-11-22 13:01:46,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:46,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:01:46,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339610114] [2020-11-22 13:01:46,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:01:46,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:46,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:01:46,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:01:46,128 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-22 13:01:46,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:46,762 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-22 13:01:46,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:01:46,765 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-22 13:01:46,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:46,790 INFO L225 Difference]: With dead ends: 251 [2020-11-22 13:01:46,790 INFO L226 Difference]: Without dead ends: 163 [2020-11-22 13:01:46,793 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 [2020-11-22 13:01:46,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-22 13:01:46,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-22 13:01:46,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-22 13:01:46,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2020-11-22 13:01:46,854 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2020-11-22 13:01:46,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:46,855 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2020-11-22 13:01:46,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:01:46,856 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2020-11-22 13:01:46,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-22 13:01:46,860 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:46,860 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] [2020-11-22 13:01:46,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:01:46,861 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:01:46,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:46,870 INFO L82 PathProgramCache]: Analyzing trace with hash -215852838, now seen corresponding path program 1 times [2020-11-22 13:01:46,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:46,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196122828] [2020-11-22 13:01:46,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:47,007 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:47,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196122828] [2020-11-22 13:01:47,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:47,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:01:47,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528496504] [2020-11-22 13:01:47,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:01:47,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:47,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:01:47,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:01:47,017 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand 3 states. [2020-11-22 13:01:47,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:47,338 INFO L93 Difference]: Finished difference Result 325 states and 625 transitions. [2020-11-22 13:01:47,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:01:47,338 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-11-22 13:01:47,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:47,340 INFO L225 Difference]: With dead ends: 325 [2020-11-22 13:01:47,340 INFO L226 Difference]: Without dead ends: 163 [2020-11-22 13:01:47,342 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 [2020-11-22 13:01:47,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-22 13:01:47,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-22 13:01:47,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-22 13:01:47,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 283 transitions. [2020-11-22 13:01:47,362 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 283 transitions. Word has length 91 [2020-11-22 13:01:47,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:47,362 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 283 transitions. [2020-11-22 13:01:47,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:01:47,363 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 283 transitions. [2020-11-22 13:01:47,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-22 13:01:47,367 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:47,367 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] [2020-11-22 13:01:47,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:01:47,367 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:01:47,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:47,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1467823597, now seen corresponding path program 1 times [2020-11-22 13:01:47,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:47,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858365267] [2020-11-22 13:01:47,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:47,462 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:47,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858365267] [2020-11-22 13:01:47,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:47,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:01:47,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891809973] [2020-11-22 13:01:47,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:01:47,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:47,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:01:47,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:01:47,465 INFO L87 Difference]: Start difference. First operand 163 states and 283 transitions. Second operand 3 states. [2020-11-22 13:01:47,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:47,944 INFO L93 Difference]: Finished difference Result 485 states and 846 transitions. [2020-11-22 13:01:47,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:01:47,945 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-11-22 13:01:47,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:47,947 INFO L225 Difference]: With dead ends: 485 [2020-11-22 13:01:47,947 INFO L226 Difference]: Without dead ends: 323 [2020-11-22 13:01:47,949 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 [2020-11-22 13:01:47,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-22 13:01:47,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-11-22 13:01:47,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-11-22 13:01:47,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 464 transitions. [2020-11-22 13:01:47,973 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 464 transitions. Word has length 98 [2020-11-22 13:01:47,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:47,973 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 464 transitions. [2020-11-22 13:01:47,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:01:47,973 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 464 transitions. [2020-11-22 13:01:47,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-11-22 13:01:47,987 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:47,987 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2020-11-22 13:01:47,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:01:47,988 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:01:47,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:47,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1297383415, now seen corresponding path program 1 times [2020-11-22 13:01:47,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:47,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125291840] [2020-11-22 13:01:47,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:48,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125291840] [2020-11-22 13:01:48,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:48,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:01:48,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359630403] [2020-11-22 13:01:48,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:01:48,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:48,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:01:48,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:01:48,059 INFO L87 Difference]: Start difference. First operand 323 states and 464 transitions. Second operand 3 states. [2020-11-22 13:01:48,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:48,508 INFO L93 Difference]: Finished difference Result 885 states and 1298 transitions. [2020-11-22 13:01:48,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:01:48,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2020-11-22 13:01:48,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:48,514 INFO L225 Difference]: With dead ends: 885 [2020-11-22 13:01:48,514 INFO L226 Difference]: Without dead ends: 563 [2020-11-22 13:01:48,515 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 [2020-11-22 13:01:48,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-22 13:01:48,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 403. [2020-11-22 13:01:48,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-11-22 13:01:48,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 573 transitions. [2020-11-22 13:01:48,547 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 573 transitions. Word has length 102 [2020-11-22 13:01:48,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:48,548 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 573 transitions. [2020-11-22 13:01:48,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:01:48,548 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 573 transitions. [2020-11-22 13:01:48,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-22 13:01:48,553 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:48,553 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] [2020-11-22 13:01:48,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 13:01:48,554 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:01:48,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:48,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1373213704, now seen corresponding path program 1 times [2020-11-22 13:01:48,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:48,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044258589] [2020-11-22 13:01:48,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:48,636 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:48,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044258589] [2020-11-22 13:01:48,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:48,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:01:48,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442020257] [2020-11-22 13:01:48,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:01:48,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:48,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:01:48,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:01:48,639 INFO L87 Difference]: Start difference. First operand 403 states and 573 transitions. Second operand 3 states. [2020-11-22 13:01:49,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:49,039 INFO L93 Difference]: Finished difference Result 885 states and 1260 transitions. [2020-11-22 13:01:49,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:01:49,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-11-22 13:01:49,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:49,051 INFO L225 Difference]: With dead ends: 885 [2020-11-22 13:01:49,051 INFO L226 Difference]: Without dead ends: 483 [2020-11-22 13:01:49,052 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 [2020-11-22 13:01:49,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-11-22 13:01:49,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2020-11-22 13:01:49,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-11-22 13:01:49,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 658 transitions. [2020-11-22 13:01:49,072 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 658 transitions. Word has length 103 [2020-11-22 13:01:49,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:49,073 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 658 transitions. [2020-11-22 13:01:49,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:01:49,073 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 658 transitions. [2020-11-22 13:01:49,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-11-22 13:01:49,075 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:49,075 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] [2020-11-22 13:01:49,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 13:01:49,075 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:01:49,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:49,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1281004754, now seen corresponding path program 1 times [2020-11-22 13:01:49,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:49,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240320482] [2020-11-22 13:01:49,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:49,356 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:01:49,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240320482] [2020-11-22 13:01:49,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730316645] [2020-11-22 13:01:49,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e854e644-5ffc-4da7-972c-ea011f9dbe50/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 [2020-11-22 13:01:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:49,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:01:49,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:01:49,620 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-22 13:01:49,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:01:49,684 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-22 13:01:49,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 13:01:49,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-22 13:01:49,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837303305] [2020-11-22 13:01:49,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:01:49,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:49,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:01:49,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:01:49,687 INFO L87 Difference]: Start difference. First operand 483 states and 658 transitions. Second operand 3 states. [2020-11-22 13:01:50,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:50,156 INFO L93 Difference]: Finished difference Result 1365 states and 1856 transitions. [2020-11-22 13:01:50,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:01:50,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-11-22 13:01:50,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:50,163 INFO L225 Difference]: With dead ends: 1365 [2020-11-22 13:01:50,163 INFO L226 Difference]: Without dead ends: 883 [2020-11-22 13:01:50,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:01:50,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2020-11-22 13:01:50,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 803. [2020-11-22 13:01:50,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-11-22 13:01:50,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1053 transitions. [2020-11-22 13:01:50,200 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1053 transitions. Word has length 107 [2020-11-22 13:01:50,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:50,201 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 1053 transitions. [2020-11-22 13:01:50,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:01:50,201 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1053 transitions. [2020-11-22 13:01:50,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-11-22 13:01:50,204 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:50,204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:01:50,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-22 13:01:50,432 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:01:50,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:50,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1989621949, now seen corresponding path program 1 times [2020-11-22 13:01:50,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:50,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463074794] [2020-11-22 13:01:50,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:50,548 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-22 13:01:50,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463074794] [2020-11-22 13:01:50,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:01:50,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:01:50,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900163668] [2020-11-22 13:01:50,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:01:50,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:50,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:01:50,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:01:50,553 INFO L87 Difference]: Start difference. First operand 803 states and 1053 transitions. Second operand 3 states. [2020-11-22 13:01:51,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:51,057 INFO L93 Difference]: Finished difference Result 1845 states and 2475 transitions. [2020-11-22 13:01:51,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:01:51,060 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-11-22 13:01:51,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:51,065 INFO L225 Difference]: With dead ends: 1845 [2020-11-22 13:01:51,065 INFO L226 Difference]: Without dead ends: 963 [2020-11-22 13:01:51,066 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 [2020-11-22 13:01:51,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-11-22 13:01:51,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2020-11-22 13:01:51,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-11-22 13:01:51,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1131 transitions. [2020-11-22 13:01:51,111 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1131 transitions. Word has length 133 [2020-11-22 13:01:51,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:51,111 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1131 transitions. [2020-11-22 13:01:51,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:01:51,112 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1131 transitions. [2020-11-22 13:01:51,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-11-22 13:01:51,115 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:01:51,116 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:01:51,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 13:01:51,116 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:01:51,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:01:51,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1266112378, now seen corresponding path program 1 times [2020-11-22 13:01:51,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:01:51,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702798067] [2020-11-22 13:01:51,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:01:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:51,290 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 87 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-11-22 13:01:51,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702798067] [2020-11-22 13:01:51,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595002873] [2020-11-22 13:01:51,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e854e644-5ffc-4da7-972c-ea011f9dbe50/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:01:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:01:51,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:01:51,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:01:51,554 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-11-22 13:01:51,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:01:51,613 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-11-22 13:01:51,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 13:01:51,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 7 [2020-11-22 13:01:51,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050420405] [2020-11-22 13:01:51,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:01:51,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:01:51,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:01:51,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:01:51,617 INFO L87 Difference]: Start difference. First operand 963 states and 1131 transitions. Second operand 4 states. [2020-11-22 13:01:52,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:01:52,248 INFO L93 Difference]: Finished difference Result 2003 states and 2379 transitions. [2020-11-22 13:01:52,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:01:52,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-11-22 13:01:52,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:01:52,250 INFO L225 Difference]: With dead ends: 2003 [2020-11-22 13:01:52,250 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:01:52,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:01:52,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:01:52,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:01:52,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:01:52,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:01:52,253 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 154 [2020-11-22 13:01:52,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:01:52,253 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:01:52,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:01:52,253 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:01:52,253 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:01:52,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:01:52,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:01:52,704 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-22 13:01:52,705 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-22 13:01:52,705 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-22 13:01:52,705 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-22 13:01:52,705 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-22 13:01:52,705 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-22 13:01:52,705 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-22 13:01:52,705 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-22 13:01:52,705 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-22 13:01:52,705 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-22 13:01:52,705 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-22 13:01:52,705 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-22 13:01:52,705 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-22 13:01:52,705 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-22 13:01:52,706 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-22 13:01:52,706 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-22 13:01:52,706 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-22 13:01:52,706 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-22 13:01:52,706 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-22 13:01:52,706 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-22 13:01:52,706 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-22 13:01:52,706 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-22 13:01:52,706 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-22 13:01:52,706 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-22 13:01:52,706 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-22 13:01:52,706 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-22 13:01:52,706 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:01:52,706 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-22 13:01:52,707 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-22 13:01:52,707 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-22 13:01:52,707 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-22 13:01:52,707 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-22 13:01:52,707 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-22 13:01:52,707 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-22 13:01:52,707 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-22 13:01:52,707 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-22 13:01:52,707 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 13:01:52,707 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-22 13:01:52,707 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-22 13:01:52,707 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-22 13:01:52,708 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-22 13:01:52,708 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-22 13:01:52,708 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-22 13:01:52,708 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-22 13:01:52,708 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-22 13:01:52,708 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-22 13:01:52,708 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-22 13:01:52,708 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-22 13:01:52,708 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-22 13:01:52,708 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-22 13:01:52,708 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-22 13:01:52,708 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-22 13:01:52,708 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-22 13:01:52,709 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8)) (.cse1 (<= ~a28~0 10))) (or (and (<= 8 ~a17~0) (<= ~a28~0 7) .cse0) (and (<= 9 ~a28~0) .cse0 .cse1) (and (= ~a19~0 1) .cse0) (and .cse0 (<= ~a25~0 0) .cse1 (< 7 ~a28~0)))) [2020-11-22 13:01:52,709 INFO L274 CegarLoopResult]: For program point L541-1(lines 39 608) no Hoare annotation was computed. [2020-11-22 13:01:52,709 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-22 13:01:52,709 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-22 13:01:52,709 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-22 13:01:52,709 INFO L274 CegarLoopResult]: For program point L544-1(lines 39 608) no Hoare annotation was computed. [2020-11-22 13:01:52,709 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-22 13:01:52,710 INFO L274 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-11-22 13:01:52,710 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-22 13:01:52,710 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-22 13:01:52,710 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-22 13:01:52,710 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-22 13:01:52,710 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:01:52,710 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-22 13:01:52,710 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-22 13:01:52,710 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8)) (.cse1 (<= ~a28~0 10))) (or (and (<= 8 ~a17~0) (<= ~a28~0 7) .cse0) (and (<= 9 ~a28~0) .cse0 .cse1) (and (= ~a19~0 1) .cse0) (and .cse0 (<= ~a25~0 0) .cse1 (< 7 ~a28~0)))) [2020-11-22 13:01:52,710 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-22 13:01:52,710 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-22 13:01:52,710 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-22 13:01:52,710 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-22 13:01:52,711 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-22 13:01:52,711 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-22 13:01:52,711 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-22 13:01:52,711 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-22 13:01:52,711 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-22 13:01:52,711 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-22 13:01:52,711 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-22 13:01:52,711 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-22 13:01:52,718 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-22 13:01:52,718 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-22 13:01:52,719 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-22 13:01:52,719 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-22 13:01:52,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:01:52 BoogieIcfgContainer [2020-11-22 13:01:52,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:01:52,745 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:01:52,745 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:01:52,745 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:01:52,745 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:01:45" (3/4) ... [2020-11-22 13:01:52,748 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:01:52,780 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-11-22 13:01:52,781 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-22 13:01:52,783 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-22 13:01:52,785 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 13:01:53,017 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e854e644-5ffc-4da7-972c-ea011f9dbe50/bin/utaipan/witness.graphml [2020-11-22 13:01:53,017 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:01:53,019 INFO L168 Benchmark]: Toolchain (without parser) took 10562.94 ms. Allocated memory was 107.0 MB in the beginning and 226.5 MB in the end (delta: 119.5 MB). Free memory was 76.2 MB in the beginning and 144.2 MB in the end (delta: -68.0 MB). Peak memory consumption was 50.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:53,020 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 79.7 MB. Free memory was 37.6 MB in the beginning and 37.5 MB in the end (delta: 41.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:01:53,020 INFO L168 Benchmark]: CACSL2BoogieTranslator took 580.07 ms. Allocated memory is still 107.0 MB. Free memory was 75.9 MB in the beginning and 69.2 MB in the end (delta: 6.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:53,021 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.76 ms. Allocated memory is still 107.0 MB. Free memory was 69.2 MB in the beginning and 63.4 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:53,021 INFO L168 Benchmark]: Boogie Preprocessor took 93.30 ms. Allocated memory is still 107.0 MB. Free memory was 63.4 MB in the beginning and 59.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:53,022 INFO L168 Benchmark]: RCFGBuilder took 2401.98 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 59.2 MB in the beginning and 92.7 MB in the end (delta: -33.5 MB). Peak memory consumption was 41.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:53,022 INFO L168 Benchmark]: TraceAbstraction took 7091.34 ms. Allocated memory was 130.0 MB in the beginning and 226.5 MB in the end (delta: 96.5 MB). Free memory was 92.7 MB in the beginning and 159.9 MB in the end (delta: -67.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:53,022 INFO L168 Benchmark]: Witness Printer took 272.88 ms. Allocated memory is still 226.5 MB. Free memory was 159.9 MB in the beginning and 144.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:01:53,025 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 79.7 MB. Free memory was 37.6 MB in the beginning and 37.5 MB in the end (delta: 41.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 580.07 ms. Allocated memory is still 107.0 MB. Free memory was 75.9 MB in the beginning and 69.2 MB in the end (delta: 6.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 101.76 ms. Allocated memory is still 107.0 MB. Free memory was 69.2 MB in the beginning and 63.4 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 93.30 ms. Allocated memory is still 107.0 MB. Free memory was 63.4 MB in the beginning and 59.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2401.98 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 59.2 MB in the beginning and 92.7 MB in the end (delta: -33.5 MB). Peak memory consumption was 41.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7091.34 ms. Allocated memory was 130.0 MB in the beginning and 226.5 MB in the end (delta: 96.5 MB). Free memory was 92.7 MB in the beginning and 159.9 MB in the end (delta: -67.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 16.1 GB. * Witness Printer took 272.88 ms. Allocated memory is still 226.5 MB. Free memory was 159.9 MB in the beginning and 144.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() 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 && a28 <= 7) && a17 <= 8) || ((9 <= a28 && a17 <= 8) && a28 <= 10)) || (a19 == 1 && a17 <= 8)) || (((a17 <= 8 && a25 <= 0) && a28 <= 10) && 7 < a28) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((8 <= a17 && a28 <= 7) && a17 <= 8) || ((9 <= a28 && a17 <= 8) && a28 <= 10)) || (a19 == 1 && a17 <= 8)) || (((a17 <= 8 && a25 <= 0) && a28 <= 10) && 7 < a28) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.7s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 367 SDtfs, 508 SDslu, 43 SDs, 0 SdLazy, 1836 SolverSat, 443 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 540 GetRequests, 524 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=963occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 240 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 37 NumberOfFragments, 83 HoareAnnotationTreeSize, 3 FomulaSimplifications, 506 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 154 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 1129 NumberOfCodeBlocks, 1129 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1378 ConstructedInterpolants, 0 QuantifiedInterpolants, 523790 SizeOfPredicates, 3 NumberOfNonLiveVariables, 673 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 12 InterpolantComputations, 10 PerfectInterpolantSequences, 691/715 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...