./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label23.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_f3c452f5-695d-46de-ad6c-8f8e372df326/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f3c452f5-695d-46de-ad6c-8f8e372df326/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f3c452f5-695d-46de-ad6c-8f8e372df326/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f3c452f5-695d-46de-ad6c-8f8e372df326/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label23.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f3c452f5-695d-46de-ad6c-8f8e372df326/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f3c452f5-695d-46de-ad6c-8f8e372df326/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 b121c0464c557212174d50c3c43859d1b7172e79 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 18:15:31,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:15:31,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:15:31,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:15:31,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:15:31,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:15:31,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:15:31,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:15:31,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:15:31,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:15:31,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:15:31,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:15:31,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:15:31,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:15:31,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:15:31,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:15:31,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:15:31,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:15:31,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:15:31,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:15:31,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:15:31,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:15:31,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:15:31,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:15:31,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:15:31,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:15:31,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:15:31,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:15:31,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:15:31,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:15:31,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:15:31,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:15:31,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:15:31,150 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:15:31,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:15:31,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:15:31,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:15:31,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:15:31,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:15:31,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:15:31,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:15:31,154 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f3c452f5-695d-46de-ad6c-8f8e372df326/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 18:15:31,174 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:15:31,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:15:31,175 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:15:31,175 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:15:31,175 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:15:31,176 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:15:31,176 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 18:15:31,176 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:15:31,176 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:15:31,176 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 18:15:31,176 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 18:15:31,176 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:15:31,176 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 18:15:31,177 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 18:15:31,177 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 18:15:31,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:15:31,177 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:15:31,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 18:15:31,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:15:31,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:15:31,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:15:31,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:15:31,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:15:31,178 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:15:31,178 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:15:31,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:15:31,178 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:15:31,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:15:31,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:15:31,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:15:31,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:15:31,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:15:31,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:15:31,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:15:31,180 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 18:15:31,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 18:15:31,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:15:31,180 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:15:31,180 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:15:31,181 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_f3c452f5-695d-46de-ad6c-8f8e372df326/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f3c452f5-695d-46de-ad6c-8f8e372df326/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b121c0464c557212174d50c3c43859d1b7172e79 [2020-12-09 18:15:31,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:15:31,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:15:31,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:15:31,392 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:15:31,393 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:15:31,394 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f3c452f5-695d-46de-ad6c-8f8e372df326/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label23.c [2020-12-09 18:15:31,441 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f3c452f5-695d-46de-ad6c-8f8e372df326/bin/utaipan/data/a121350d8/4d324ceae9b9491fa01c3a2a5acebc04/FLAGf6b3d0972 [2020-12-09 18:15:31,849 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:15:31,849 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f3c452f5-695d-46de-ad6c-8f8e372df326/sv-benchmarks/c/eca-rers2012/Problem01_label23.c [2020-12-09 18:15:31,858 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f3c452f5-695d-46de-ad6c-8f8e372df326/bin/utaipan/data/a121350d8/4d324ceae9b9491fa01c3a2a5acebc04/FLAGf6b3d0972 [2020-12-09 18:15:31,867 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f3c452f5-695d-46de-ad6c-8f8e372df326/bin/utaipan/data/a121350d8/4d324ceae9b9491fa01c3a2a5acebc04 [2020-12-09 18:15:31,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:15:31,870 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:15:31,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:15:31,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:15:31,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:15:31,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:15:31" (1/1) ... [2020-12-09 18:15:31,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b86a53e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:15:31, skipping insertion in model container [2020-12-09 18:15:31,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:15:31" (1/1) ... [2020-12-09 18:15:31,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:15:31,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:15:32,121 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_f3c452f5-695d-46de-ad6c-8f8e372df326/sv-benchmarks/c/eca-rers2012/Problem01_label23.c[17363,17376] [2020-12-09 18:15:32,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:15:32,151 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 18:15:32,202 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_f3c452f5-695d-46de-ad6c-8f8e372df326/sv-benchmarks/c/eca-rers2012/Problem01_label23.c[17363,17376] [2020-12-09 18:15:32,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:15:32,225 INFO L208 MainTranslator]: Completed translation [2020-12-09 18:15:32,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:15:32 WrapperNode [2020-12-09 18:15:32,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:15:32,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 18:15:32,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 18:15:32,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 18:15:32,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:15:32" (1/1) ... [2020-12-09 18:15:32,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:15:32" (1/1) ... [2020-12-09 18:15:32,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 18:15:32,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 18:15:32,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 18:15:32,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 18:15:32,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:15:32" (1/1) ... [2020-12-09 18:15:32,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:15:32" (1/1) ... [2020-12-09 18:15:32,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:15:32" (1/1) ... [2020-12-09 18:15:32,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:15:32" (1/1) ... [2020-12-09 18:15:32,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:15:32" (1/1) ... [2020-12-09 18:15:32,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:15:32" (1/1) ... [2020-12-09 18:15:32,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:15:32" (1/1) ... [2020-12-09 18:15:32,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 18:15:32,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 18:15:32,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 18:15:32,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 18:15:32,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:15:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3c452f5-695d-46de-ad6c-8f8e372df326/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 18:15:32,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 18:15:32,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 18:15:32,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 18:15:32,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 18:15:33,594 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 18:15:33,594 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 18:15:33,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:15:33 BoogieIcfgContainer [2020-12-09 18:15:33,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 18:15:33,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 18:15:33,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 18:15:33,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 18:15:33,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:15:31" (1/3) ... [2020-12-09 18:15:33,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52729122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:15:33, skipping insertion in model container [2020-12-09 18:15:33,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:15:32" (2/3) ... [2020-12-09 18:15:33,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52729122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:15:33, skipping insertion in model container [2020-12-09 18:15:33,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:15:33" (3/3) ... [2020-12-09 18:15:33,604 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label23.c [2020-12-09 18:15:33,617 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 18:15:33,621 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 18:15:33,628 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 18:15:33,648 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 18:15:33,648 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 18:15:33,648 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 18:15:33,648 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 18:15:33,648 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 18:15:33,648 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 18:15:33,649 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 18:15:33,649 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 18:15:33,660 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-12-09 18:15:33,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-09 18:15:33,668 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:15:33,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:15:33,669 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:15:33,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:15:33,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1323238041, now seen corresponding path program 1 times [2020-12-09 18:15:33,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:15:33,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172681837] [2020-12-09 18:15:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:15:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:15:33,958 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 18:15:33,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172681837] [2020-12-09 18:15:33,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:15:33,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:15:33,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214217137] [2020-12-09 18:15:33,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:15:33,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:15:33,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:15:33,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:15:33,980 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-12-09 18:15:34,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:15:34,321 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-12-09 18:15:34,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:15:34,322 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-09 18:15:34,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:15:34,330 INFO L225 Difference]: With dead ends: 224 [2020-12-09 18:15:34,331 INFO L226 Difference]: Without dead ends: 145 [2020-12-09 18:15:34,333 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 18:15:34,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-09 18:15:34,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-12-09 18:15:34,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-12-09 18:15:34,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 265 transitions. [2020-12-09 18:15:34,366 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 265 transitions. Word has length 71 [2020-12-09 18:15:34,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:15:34,367 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 265 transitions. [2020-12-09 18:15:34,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:15:34,367 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 265 transitions. [2020-12-09 18:15:34,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-09 18:15:34,370 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:15:34,370 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:15:34,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 18:15:34,370 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:15:34,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:15:34,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1048390662, now seen corresponding path program 1 times [2020-12-09 18:15:34,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:15:34,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884677825] [2020-12-09 18:15:34,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:15:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:15:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:15:34,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884677825] [2020-12-09 18:15:34,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:15:34,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:15:34,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171781144] [2020-12-09 18:15:34,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:15:34,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:15:34,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:15:34,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:15:34,420 INFO L87 Difference]: Start difference. First operand 145 states and 265 transitions. Second operand 3 states. [2020-12-09 18:15:34,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:15:34,671 INFO L93 Difference]: Finished difference Result 431 states and 792 transitions. [2020-12-09 18:15:34,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:15:34,672 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-09 18:15:34,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:15:34,674 INFO L225 Difference]: With dead ends: 431 [2020-12-09 18:15:34,674 INFO L226 Difference]: Without dead ends: 287 [2020-12-09 18:15:34,676 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 18:15:34,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-12-09 18:15:34,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-12-09 18:15:34,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-12-09 18:15:34,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 486 transitions. [2020-12-09 18:15:34,692 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 486 transitions. Word has length 77 [2020-12-09 18:15:34,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:15:34,693 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 486 transitions. [2020-12-09 18:15:34,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:15:34,693 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 486 transitions. [2020-12-09 18:15:34,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-09 18:15:34,695 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:15:34,695 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 18:15:34,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 18:15:34,696 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:15:34,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:15:34,696 INFO L82 PathProgramCache]: Analyzing trace with hash -2123295334, now seen corresponding path program 1 times [2020-12-09 18:15:34,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:15:34,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433140474] [2020-12-09 18:15:34,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:15:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:15:34,776 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:15:34,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433140474] [2020-12-09 18:15:34,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:15:34,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:15:34,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933224362] [2020-12-09 18:15:34,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:15:34,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:15:34,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:15:34,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:15:34,778 INFO L87 Difference]: Start difference. First operand 287 states and 486 transitions. Second operand 3 states. [2020-12-09 18:15:35,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:15:35,027 INFO L93 Difference]: Finished difference Result 786 states and 1330 transitions. [2020-12-09 18:15:35,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:15:35,027 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-09 18:15:35,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:15:35,030 INFO L225 Difference]: With dead ends: 786 [2020-12-09 18:15:35,030 INFO L226 Difference]: Without dead ends: 500 [2020-12-09 18:15:35,032 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 18:15:35,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-12-09 18:15:35,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 358. [2020-12-09 18:15:35,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-12-09 18:15:35,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 581 transitions. [2020-12-09 18:15:35,046 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 581 transitions. Word has length 78 [2020-12-09 18:15:35,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:15:35,047 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 581 transitions. [2020-12-09 18:15:35,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:15:35,047 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 581 transitions. [2020-12-09 18:15:35,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-09 18:15:35,049 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:15:35,049 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 18:15:35,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 18:15:35,049 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:15:35,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:15:35,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1566183221, now seen corresponding path program 1 times [2020-12-09 18:15:35,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:15:35,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546845044] [2020-12-09 18:15:35,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:15:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:15:35,093 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:15:35,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546845044] [2020-12-09 18:15:35,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:15:35,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:15:35,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646033966] [2020-12-09 18:15:35,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:15:35,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:15:35,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:15:35,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:15:35,094 INFO L87 Difference]: Start difference. First operand 358 states and 581 transitions. Second operand 3 states. [2020-12-09 18:15:35,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:15:35,302 INFO L93 Difference]: Finished difference Result 786 states and 1256 transitions. [2020-12-09 18:15:35,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:15:35,303 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-12-09 18:15:35,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:15:35,304 INFO L225 Difference]: With dead ends: 786 [2020-12-09 18:15:35,304 INFO L226 Difference]: Without dead ends: 358 [2020-12-09 18:15:35,305 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 18:15:35,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-12-09 18:15:35,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2020-12-09 18:15:35,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-12-09 18:15:35,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 476 transitions. [2020-12-09 18:15:35,316 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 476 transitions. Word has length 84 [2020-12-09 18:15:35,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:15:35,317 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 476 transitions. [2020-12-09 18:15:35,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:15:35,317 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 476 transitions. [2020-12-09 18:15:35,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-09 18:15:35,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:15:35,319 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 18:15:35,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 18:15:35,319 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:15:35,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:15:35,320 INFO L82 PathProgramCache]: Analyzing trace with hash -77576813, now seen corresponding path program 1 times [2020-12-09 18:15:35,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:15:35,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558961041] [2020-12-09 18:15:35,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:15:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:15:35,376 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 18:15:35,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558961041] [2020-12-09 18:15:35,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:15:35,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:15:35,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235442272] [2020-12-09 18:15:35,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:15:35,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:15:35,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:15:35,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:15:35,378 INFO L87 Difference]: Start difference. First operand 358 states and 476 transitions. Second operand 3 states. [2020-12-09 18:15:35,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:15:35,563 INFO L93 Difference]: Finished difference Result 999 states and 1333 transitions. [2020-12-09 18:15:35,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:15:35,564 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-12-09 18:15:35,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:15:35,566 INFO L225 Difference]: With dead ends: 999 [2020-12-09 18:15:35,566 INFO L226 Difference]: Without dead ends: 642 [2020-12-09 18:15:35,567 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 18:15:35,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-12-09 18:15:35,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2020-12-09 18:15:35,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-12-09 18:15:35,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 722 transitions. [2020-12-09 18:15:35,583 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 722 transitions. Word has length 88 [2020-12-09 18:15:35,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:15:35,583 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 722 transitions. [2020-12-09 18:15:35,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:15:35,583 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 722 transitions. [2020-12-09 18:15:35,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-09 18:15:35,585 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:15:35,585 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:15:35,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 18:15:35,585 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:15:35,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:15:35,585 INFO L82 PathProgramCache]: Analyzing trace with hash -969910315, now seen corresponding path program 1 times [2020-12-09 18:15:35,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:15:35,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038420021] [2020-12-09 18:15:35,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:15:35,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:15:35,615 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-09 18:15:35,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038420021] [2020-12-09 18:15:35,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:15:35,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:15:35,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230811957] [2020-12-09 18:15:35,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:15:35,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:15:35,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:15:35,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:15:35,616 INFO L87 Difference]: Start difference. First operand 571 states and 722 transitions. Second operand 3 states. [2020-12-09 18:15:35,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:15:35,821 INFO L93 Difference]: Finished difference Result 1425 states and 1805 transitions. [2020-12-09 18:15:35,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:15:35,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-09 18:15:35,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:15:35,827 INFO L225 Difference]: With dead ends: 1425 [2020-12-09 18:15:35,827 INFO L226 Difference]: Without dead ends: 855 [2020-12-09 18:15:35,828 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 18:15:35,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-12-09 18:15:35,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 713. [2020-12-09 18:15:35,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-12-09 18:15:35,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 910 transitions. [2020-12-09 18:15:35,849 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 910 transitions. Word has length 97 [2020-12-09 18:15:35,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:15:35,850 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 910 transitions. [2020-12-09 18:15:35,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:15:35,850 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 910 transitions. [2020-12-09 18:15:35,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-09 18:15:35,852 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:15:35,852 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, 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] [2020-12-09 18:15:35,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 18:15:35,852 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:15:35,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:15:35,853 INFO L82 PathProgramCache]: Analyzing trace with hash 397475491, now seen corresponding path program 1 times [2020-12-09 18:15:35,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:15:35,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245549434] [2020-12-09 18:15:35,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:15:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:15:35,910 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:15:35,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245549434] [2020-12-09 18:15:35,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:15:35,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:15:35,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46608993] [2020-12-09 18:15:35,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:15:35,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:15:35,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:15:35,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:15:35,911 INFO L87 Difference]: Start difference. First operand 713 states and 910 transitions. Second operand 3 states. [2020-12-09 18:15:36,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:15:36,147 INFO L93 Difference]: Finished difference Result 1567 states and 1989 transitions. [2020-12-09 18:15:36,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:15:36,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-12-09 18:15:36,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:15:36,150 INFO L225 Difference]: With dead ends: 1567 [2020-12-09 18:15:36,151 INFO L226 Difference]: Without dead ends: 855 [2020-12-09 18:15:36,151 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 18:15:36,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-12-09 18:15:36,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 855. [2020-12-09 18:15:36,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-12-09 18:15:36,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1066 transitions. [2020-12-09 18:15:36,168 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1066 transitions. Word has length 100 [2020-12-09 18:15:36,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:15:36,169 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1066 transitions. [2020-12-09 18:15:36,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:15:36,169 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1066 transitions. [2020-12-09 18:15:36,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-09 18:15:36,170 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:15:36,170 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:15:36,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 18:15:36,170 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:15:36,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:15:36,171 INFO L82 PathProgramCache]: Analyzing trace with hash 2113454955, now seen corresponding path program 1 times [2020-12-09 18:15:36,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:15:36,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358684946] [2020-12-09 18:15:36,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:15:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:15:36,243 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:15:36,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358684946] [2020-12-09 18:15:36,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869542465] [2020-12-09 18:15:36,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3c452f5-695d-46de-ad6c-8f8e372df326/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 18:15:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:15:36,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 18:15:36,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:15:36,429 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-09 18:15:36,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:15:36,543 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-09 18:15:36,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 18:15:36,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-12-09 18:15:36,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737288086] [2020-12-09 18:15:36,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:15:36,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:15:36,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:15:36,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:15:36,545 INFO L87 Difference]: Start difference. First operand 855 states and 1066 transitions. Second operand 3 states. [2020-12-09 18:15:36,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:15:36,802 INFO L93 Difference]: Finished difference Result 2277 states and 2886 transitions. [2020-12-09 18:15:36,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:15:36,802 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-12-09 18:15:36,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:15:36,811 INFO L225 Difference]: With dead ends: 2277 [2020-12-09 18:15:36,811 INFO L226 Difference]: Without dead ends: 1494 [2020-12-09 18:15:36,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:15:36,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2020-12-09 18:15:36,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1352. [2020-12-09 18:15:36,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2020-12-09 18:15:36,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1667 transitions. [2020-12-09 18:15:36,841 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1667 transitions. Word has length 104 [2020-12-09 18:15:36,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:15:36,841 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 1667 transitions. [2020-12-09 18:15:36,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:15:36,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1667 transitions. [2020-12-09 18:15:36,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-09 18:15:36,844 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:15:36,844 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 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] [2020-12-09 18:15:37,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-12-09 18:15:37,045 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:15:37,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:15:37,045 INFO L82 PathProgramCache]: Analyzing trace with hash -637028942, now seen corresponding path program 1 times [2020-12-09 18:15:37,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:15:37,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644615274] [2020-12-09 18:15:37,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:15:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:15:37,127 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 70 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-12-09 18:15:37,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644615274] [2020-12-09 18:15:37,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128166755] [2020-12-09 18:15:37,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3c452f5-695d-46de-ad6c-8f8e372df326/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 [2020-12-09 18:15:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:15:37,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 18:15:37,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:15:37,323 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-12-09 18:15:37,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:15:37,423 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-12-09 18:15:37,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 18:15:37,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 18:15:37,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745465195] [2020-12-09 18:15:37,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:15:37,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:15:37,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:15:37,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:15:37,425 INFO L87 Difference]: Start difference. First operand 1352 states and 1667 transitions. Second operand 3 states. [2020-12-09 18:15:37,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:15:37,659 INFO L93 Difference]: Finished difference Result 2774 states and 3425 transitions. [2020-12-09 18:15:37,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:15:37,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 136 [2020-12-09 18:15:37,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:15:37,667 INFO L225 Difference]: With dead ends: 2774 [2020-12-09 18:15:37,667 INFO L226 Difference]: Without dead ends: 1423 [2020-12-09 18:15:37,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 269 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:15:37,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2020-12-09 18:15:37,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1352. [2020-12-09 18:15:37,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2020-12-09 18:15:37,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1599 transitions. [2020-12-09 18:15:37,697 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1599 transitions. Word has length 136 [2020-12-09 18:15:37,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:15:37,697 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 1599 transitions. [2020-12-09 18:15:37,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:15:37,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1599 transitions. [2020-12-09 18:15:37,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-12-09 18:15:37,701 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:15:37,701 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:15:37,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:15:37,902 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:15:37,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:15:37,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1676368931, now seen corresponding path program 1 times [2020-12-09 18:15:37,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:15:37,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732558136] [2020-12-09 18:15:37,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:15:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:15:38,114 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 96 proven. 3 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-12-09 18:15:38,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732558136] [2020-12-09 18:15:38,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028710229] [2020-12-09 18:15:38,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3c452f5-695d-46de-ad6c-8f8e372df326/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:15:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:15:38,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 18:15:38,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:15:38,352 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-09 18:15:38,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:15:38,454 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-09 18:15:38,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 18:15:38,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 18:15:38,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629929729] [2020-12-09 18:15:38,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:15:38,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:15:38,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:15:38,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:15:38,456 INFO L87 Difference]: Start difference. First operand 1352 states and 1599 transitions. Second operand 3 states. [2020-12-09 18:15:38,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:15:38,650 INFO L93 Difference]: Finished difference Result 3200 states and 3800 transitions. [2020-12-09 18:15:38,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:15:38,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2020-12-09 18:15:38,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:15:38,656 INFO L225 Difference]: With dead ends: 3200 [2020-12-09 18:15:38,656 INFO L226 Difference]: Without dead ends: 1636 [2020-12-09 18:15:38,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 383 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:15:38,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2020-12-09 18:15:38,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1352. [2020-12-09 18:15:38,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2020-12-09 18:15:38,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1577 transitions. [2020-12-09 18:15:38,678 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1577 transitions. Word has length 193 [2020-12-09 18:15:38,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:15:38,678 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 1577 transitions. [2020-12-09 18:15:38,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:15:38,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1577 transitions. [2020-12-09 18:15:38,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-12-09 18:15:38,681 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:15:38,681 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:15:38,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-09 18:15:38,882 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:15:38,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:15:38,882 INFO L82 PathProgramCache]: Analyzing trace with hash -758044968, now seen corresponding path program 1 times [2020-12-09 18:15:38,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:15:38,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292806192] [2020-12-09 18:15:38,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:15:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:15:38,971 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 115 proven. 3 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-12-09 18:15:38,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292806192] [2020-12-09 18:15:38,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955391949] [2020-12-09 18:15:38,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3c452f5-695d-46de-ad6c-8f8e372df326/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:15:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:15:39,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 18:15:39,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:15:39,188 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-12-09 18:15:39,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:15:39,302 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-12-09 18:15:39,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 18:15:39,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 18:15:39,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349713009] [2020-12-09 18:15:39,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:15:39,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:15:39,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:15:39,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:15:39,303 INFO L87 Difference]: Start difference. First operand 1352 states and 1577 transitions. Second operand 3 states. [2020-12-09 18:15:39,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:15:39,481 INFO L93 Difference]: Finished difference Result 2488 states and 2904 transitions. [2020-12-09 18:15:39,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:15:39,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2020-12-09 18:15:39,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:15:39,482 INFO L225 Difference]: With dead ends: 2488 [2020-12-09 18:15:39,482 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 18:15:39,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 407 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:15:39,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 18:15:39,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 18:15:39,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 18:15:39,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 18:15:39,484 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 205 [2020-12-09 18:15:39,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:15:39,484 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 18:15:39,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:15:39,484 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 18:15:39,484 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 18:15:39,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:15:39,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 18:15:39,922 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-12-09 18:15:40,054 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-12-09 18:15:40,056 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-12-09 18:15:40,056 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-12-09 18:15:40,056 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-12-09 18:15:40,056 INFO L262 CegarLoopResult]: For program point L467-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 18:15:40,056 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-12-09 18:15:40,056 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-12-09 18:15:40,056 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-12-09 18:15:40,056 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-12-09 18:15:40,056 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-12-09 18:15:40,056 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-12-09 18:15:40,057 INFO L262 CegarLoopResult]: For program point L470-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 18:15:40,057 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-12-09 18:15:40,057 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-12-09 18:15:40,057 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-12-09 18:15:40,057 INFO L262 CegarLoopResult]: For program point L471(line 471) no Hoare annotation was computed. [2020-12-09 18:15:40,057 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-12-09 18:15:40,057 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-12-09 18:15:40,057 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-12-09 18:15:40,057 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-12-09 18:15:40,057 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-12-09 18:15:40,057 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-12-09 18:15:40,057 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-12-09 18:15:40,057 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-12-09 18:15:40,057 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-12-09 18:15:40,057 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-12-09 18:15:40,057 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-12-09 18:15:40,057 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-12-09 18:15:40,057 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-12-09 18:15:40,057 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-12-09 18:15:40,057 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-12-09 18:15:40,057 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-12-09 18:15:40,057 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-12-09 18:15:40,057 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-12-09 18:15:40,058 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-12-09 18:15:40,058 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-12-09 18:15:40,058 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-12-09 18:15:40,058 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-12-09 18:15:40,058 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-12-09 18:15:40,058 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-12-09 18:15:40,058 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 18:15:40,058 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-12-09 18:15:40,058 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-12-09 18:15:40,058 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-12-09 18:15:40,058 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse4 (<= ~a16~0 5)) (.cse2 (= ~a17~0 1)) (.cse3 (<= ~a20~0 0)) (.cse1 (<= ~a7~0 0)) (.cse8 (<= ~a8~0 13)) (.cse7 (<= ~a8~0 14)) (.cse0 (= ~a21~0 1)) (.cse5 (<= ~a17~0 0)) (.cse6 (= ~a20~0 1)) (.cse9 (<= 5 ~a16~0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse3) (and .cse0 .cse1 .cse6 .cse2) (and .cse7 .cse4 .cse3) (and .cse0 .cse6 .cse8) (and .cse8 .cse3) (and .cse5 .cse1 .cse3) (and .cse6 .cse8 .cse2) (and .cse7 .cse0 .cse1 .cse6) (and .cse0 .cse4 .cse2 .cse3) (and .cse0 .cse5 .cse1 .cse6) (and .cse5 .cse8) (and .cse7 .cse0 .cse6 .cse9) (and .cse0 .cse5 .cse6 .cse9))) [2020-12-09 18:15:40,058 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-12-09 18:15:40,058 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-12-09 18:15:40,058 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-12-09 18:15:40,058 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-12-09 18:15:40,058 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-12-09 18:15:40,059 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-12-09 18:15:40,059 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-12-09 18:15:40,059 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 18:15:40,059 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-12-09 18:15:40,059 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-12-09 18:15:40,059 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-12-09 18:15:40,059 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-12-09 18:15:40,059 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-12-09 18:15:40,059 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-12-09 18:15:40,059 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-12-09 18:15:40,059 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-12-09 18:15:40,059 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-12-09 18:15:40,059 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-12-09 18:15:40,059 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-12-09 18:15:40,059 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-12-09 18:15:40,059 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-12-09 18:15:40,059 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-12-09 18:15:40,059 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-12-09 18:15:40,059 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse4 (<= ~a16~0 5)) (.cse2 (= ~a17~0 1)) (.cse3 (<= ~a20~0 0)) (.cse1 (<= ~a7~0 0)) (.cse8 (<= ~a8~0 13)) (.cse7 (<= ~a8~0 14)) (.cse0 (= ~a21~0 1)) (.cse5 (<= ~a17~0 0)) (.cse6 (= ~a20~0 1)) (.cse9 (<= 5 ~a16~0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse3) (and .cse0 .cse1 .cse6 .cse2) (and .cse7 .cse4 .cse3) (and .cse0 .cse6 .cse8) (and .cse8 .cse3) (and .cse5 .cse1 .cse3) (and .cse6 .cse8 .cse2) (and .cse7 .cse0 .cse1 .cse6) (and .cse0 .cse4 .cse2 .cse3) (and .cse0 .cse5 .cse1 .cse6) (and .cse5 .cse8) (and .cse7 .cse0 .cse6 .cse9) (and .cse0 .cse5 .cse6 .cse9))) [2020-12-09 18:15:40,059 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-12-09 18:15:40,059 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 471) no Hoare annotation was computed. [2020-12-09 18:15:40,060 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-12-09 18:15:40,060 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-12-09 18:15:40,060 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-12-09 18:15:40,060 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-12-09 18:15:40,060 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-12-09 18:15:40,060 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-12-09 18:15:40,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:15:40 BoogieIcfgContainer [2020-12-09 18:15:40,076 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 18:15:40,077 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 18:15:40,077 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 18:15:40,077 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 18:15:40,077 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:15:33" (3/4) ... [2020-12-09 18:15:40,080 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 18:15:40,099 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-12-09 18:15:40,100 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 18:15:40,101 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 18:15:40,102 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 18:15:40,185 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f3c452f5-695d-46de-ad6c-8f8e372df326/bin/utaipan/witness.graphml [2020-12-09 18:15:40,185 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 18:15:40,186 INFO L168 Benchmark]: Toolchain (without parser) took 8315.60 ms. Allocated memory was 81.8 MB in the beginning and 239.1 MB in the end (delta: 157.3 MB). Free memory was 50.5 MB in the beginning and 144.3 MB in the end (delta: -93.8 MB). Peak memory consumption was 64.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:15:40,186 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 81.8 MB. Free memory is still 40.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:15:40,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.51 ms. Allocated memory was 81.8 MB in the beginning and 102.8 MB in the end (delta: 21.0 MB). Free memory was 50.2 MB in the beginning and 63.1 MB in the end (delta: -12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 18:15:40,187 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.50 ms. Allocated memory is still 102.8 MB. Free memory was 63.1 MB in the beginning and 57.4 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 18:15:40,187 INFO L168 Benchmark]: Boogie Preprocessor took 57.36 ms. Allocated memory is still 102.8 MB. Free memory was 57.4 MB in the beginning and 53.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 18:15:40,187 INFO L168 Benchmark]: RCFGBuilder took 1246.44 ms. Allocated memory was 102.8 MB in the beginning and 127.9 MB in the end (delta: 25.2 MB). Free memory was 53.2 MB in the beginning and 81.6 MB in the end (delta: -28.4 MB). Peak memory consumption was 39.3 MB. Max. memory is 16.1 GB. [2020-12-09 18:15:40,187 INFO L168 Benchmark]: TraceAbstraction took 6477.76 ms. Allocated memory was 127.9 MB in the beginning and 239.1 MB in the end (delta: 111.1 MB). Free memory was 81.6 MB in the beginning and 158.9 MB in the end (delta: -77.4 MB). Peak memory consumption was 126.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:15:40,188 INFO L168 Benchmark]: Witness Printer took 108.59 ms. Allocated memory is still 239.1 MB. Free memory was 158.9 MB in the beginning and 144.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 18:15:40,189 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 81.8 MB. Free memory is still 40.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 354.51 ms. Allocated memory was 81.8 MB in the beginning and 102.8 MB in the end (delta: 21.0 MB). Free memory was 50.2 MB in the beginning and 63.1 MB in the end (delta: -12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.50 ms. Allocated memory is still 102.8 MB. Free memory was 63.1 MB in the beginning and 57.4 MB in the end (delta: 5.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.36 ms. Allocated memory is still 102.8 MB. Free memory was 57.4 MB in the beginning and 53.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1246.44 ms. Allocated memory was 102.8 MB in the beginning and 127.9 MB in the end (delta: 25.2 MB). Free memory was 53.2 MB in the beginning and 81.6 MB in the end (delta: -28.4 MB). Peak memory consumption was 39.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6477.76 ms. Allocated memory was 127.9 MB in the beginning and 239.1 MB in the end (delta: 111.1 MB). Free memory was 81.6 MB in the beginning and 158.9 MB in the end (delta: -77.4 MB). Peak memory consumption was 126.1 MB. Max. memory is 16.1 GB. * Witness Printer took 108.59 ms. Allocated memory is still 239.1 MB. Free memory was 158.9 MB in the beginning and 144.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 471]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((((((((((a21 == 1 && a7 <= 0) && a17 == 1) && a20 <= 0) || ((a16 <= 5 && a17 <= 0) && a20 <= 0)) || (((a21 == 1 && a7 <= 0) && a20 == 1) && a17 == 1)) || ((a8 <= 14 && a16 <= 5) && a20 <= 0)) || ((a21 == 1 && a20 == 1) && a8 <= 13)) || (a8 <= 13 && a20 <= 0)) || ((a17 <= 0 && a7 <= 0) && a20 <= 0)) || ((a20 == 1 && a8 <= 13) && a17 == 1)) || (((a8 <= 14 && a21 == 1) && a7 <= 0) && a20 == 1)) || (((a21 == 1 && a16 <= 5) && a17 == 1) && a20 <= 0)) || (((a21 == 1 && a17 <= 0) && a7 <= 0) && a20 == 1)) || (a17 <= 0 && a8 <= 13)) || (((a8 <= 14 && a21 == 1) && a20 == 1) && 5 <= a16)) || (((a21 == 1 && a17 <= 0) && a20 == 1) && 5 <= a16) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((((((((((a21 == 1 && a7 <= 0) && a17 == 1) && a20 <= 0) || ((a16 <= 5 && a17 <= 0) && a20 <= 0)) || (((a21 == 1 && a7 <= 0) && a20 == 1) && a17 == 1)) || ((a8 <= 14 && a16 <= 5) && a20 <= 0)) || ((a21 == 1 && a20 == 1) && a8 <= 13)) || (a8 <= 13 && a20 <= 0)) || ((a17 <= 0 && a7 <= 0) && a20 <= 0)) || ((a20 == 1 && a8 <= 13) && a17 == 1)) || (((a8 <= 14 && a21 == 1) && a7 <= 0) && a20 == 1)) || (((a21 == 1 && a16 <= 5) && a17 == 1) && a20 <= 0)) || (((a21 == 1 && a17 <= 0) && a7 <= 0) && a20 == 1)) || (a17 <= 0 && a8 <= 13)) || (((a8 <= 14 && a21 == 1) && a20 == 1) && 5 <= a16)) || (((a21 == 1 && a17 <= 0) && a20 == 1) && 5 <= a16) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 11, TraceHistogramMax: 7, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 657 SDtfs, 421 SDslu, 40 SDs, 0 SdLazy, 2163 SolverSat, 498 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1296 GetRequests, 1273 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1352occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 852 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 47 NumberOfFragments, 313 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1324 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 150 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 1871 NumberOfCodeBlocks, 1871 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2490 ConstructedInterpolants, 0 QuantifiedInterpolants, 731696 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1550 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 19 InterpolantComputations, 15 PerfectInterpolantSequences, 2099/2111 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...