./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label40.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_926d8b03-0183-4c90-b3f5-58ef63a53413/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_926d8b03-0183-4c90-b3f5-58ef63a53413/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_926d8b03-0183-4c90-b3f5-58ef63a53413/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_926d8b03-0183-4c90-b3f5-58ef63a53413/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label40.c -s /tmp/vcloud-vcloud-master/worker/run_dir_926d8b03-0183-4c90-b3f5-58ef63a53413/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_926d8b03-0183-4c90-b3f5-58ef63a53413/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 3a21c5eb9fc4f935ebf465a8f7311e942072e793 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 18:17:59,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:17:59,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:17:59,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:17:59,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:17:59,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:17:59,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:17:59,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:17:59,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:17:59,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:17:59,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:17:59,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:17:59,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:17:59,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:17:59,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:17:59,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:17:59,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:17:59,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:17:59,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:17:59,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:17:59,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:17:59,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:17:59,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:17:59,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:17:59,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:17:59,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:17:59,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:17:59,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:17:59,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:17:59,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:17:59,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:17:59,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:17:59,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:17:59,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:17:59,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:17:59,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:17:59,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:17:59,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:17:59,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:17:59,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:17:59,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:17:59,172 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_926d8b03-0183-4c90-b3f5-58ef63a53413/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 18:17:59,189 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:17:59,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:17:59,189 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:17:59,190 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:17:59,190 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:17:59,190 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:17:59,190 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 18:17:59,190 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:17:59,190 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:17:59,190 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 18:17:59,190 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 18:17:59,190 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:17:59,191 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 18:17:59,191 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 18:17:59,191 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 18:17:59,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:17:59,191 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:17:59,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 18:17:59,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:17:59,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:17:59,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:17:59,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:17:59,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:17:59,192 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:17:59,192 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:17:59,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:17:59,192 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:17:59,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:17:59,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:17:59,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:17:59,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:17:59,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:17:59,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:17:59,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:17:59,193 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 18:17:59,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 18:17:59,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:17:59,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:17:59,194 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:17:59,194 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_926d8b03-0183-4c90-b3f5-58ef63a53413/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_926d8b03-0183-4c90-b3f5-58ef63a53413/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a21c5eb9fc4f935ebf465a8f7311e942072e793 [2020-12-09 18:17:59,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:17:59,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:17:59,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:17:59,398 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:17:59,399 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:17:59,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_926d8b03-0183-4c90-b3f5-58ef63a53413/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label40.c [2020-12-09 18:17:59,446 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_926d8b03-0183-4c90-b3f5-58ef63a53413/bin/utaipan/data/7f51a4f1a/504eee1c010f423d92a761b59b27e052/FLAG743edb991 [2020-12-09 18:17:59,879 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:17:59,880 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_926d8b03-0183-4c90-b3f5-58ef63a53413/sv-benchmarks/c/eca-rers2012/Problem02_label40.c [2020-12-09 18:17:59,888 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_926d8b03-0183-4c90-b3f5-58ef63a53413/bin/utaipan/data/7f51a4f1a/504eee1c010f423d92a761b59b27e052/FLAG743edb991 [2020-12-09 18:17:59,898 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_926d8b03-0183-4c90-b3f5-58ef63a53413/bin/utaipan/data/7f51a4f1a/504eee1c010f423d92a761b59b27e052 [2020-12-09 18:17:59,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:17:59,901 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:17:59,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:17:59,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:17:59,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:17:59,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:17:59" (1/1) ... [2020-12-09 18:17:59,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e4af6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:17:59, skipping insertion in model container [2020-12-09 18:17:59,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:17:59" (1/1) ... [2020-12-09 18:17:59,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:17:59,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:18:00,164 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_926d8b03-0183-4c90-b3f5-58ef63a53413/sv-benchmarks/c/eca-rers2012/Problem02_label40.c[15538,15551] [2020-12-09 18:18:00,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:18:00,196 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 18:18:00,244 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_926d8b03-0183-4c90-b3f5-58ef63a53413/sv-benchmarks/c/eca-rers2012/Problem02_label40.c[15538,15551] [2020-12-09 18:18:00,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:18:00,268 INFO L208 MainTranslator]: Completed translation [2020-12-09 18:18:00,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:18:00 WrapperNode [2020-12-09 18:18:00,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:18:00,269 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 18:18:00,269 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 18:18:00,270 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 18:18:00,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:18:00" (1/1) ... [2020-12-09 18:18:00,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:18:00" (1/1) ... [2020-12-09 18:18:00,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 18:18:00,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 18:18:00,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 18:18:00,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 18:18:00,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:18:00" (1/1) ... [2020-12-09 18:18:00,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:18:00" (1/1) ... [2020-12-09 18:18:00,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:18:00" (1/1) ... [2020-12-09 18:18:00,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:18:00" (1/1) ... [2020-12-09 18:18:00,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:18:00" (1/1) ... [2020-12-09 18:18:00,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:18:00" (1/1) ... [2020-12-09 18:18:00,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:18:00" (1/1) ... [2020-12-09 18:18:00,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 18:18:00,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 18:18:00,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 18:18:00,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 18:18:00,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:18:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_926d8b03-0183-4c90-b3f5-58ef63a53413/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 18:18:00,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 18:18:00,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 18:18:00,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 18:18:00,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 18:18:01,776 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 18:18:01,777 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 18:18:01,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:18:01 BoogieIcfgContainer [2020-12-09 18:18:01,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 18:18:01,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 18:18:01,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 18:18:01,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 18:18:01,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:17:59" (1/3) ... [2020-12-09 18:18:01,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e20982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:18:01, skipping insertion in model container [2020-12-09 18:18:01,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:18:00" (2/3) ... [2020-12-09 18:18:01,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e20982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:18:01, skipping insertion in model container [2020-12-09 18:18:01,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:18:01" (3/3) ... [2020-12-09 18:18:01,787 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label40.c [2020-12-09 18:18:01,801 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 18:18:01,805 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 18:18:01,815 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 18:18:01,839 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 18:18:01,839 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 18:18:01,839 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 18:18:01,839 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 18:18:01,839 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 18:18:01,840 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 18:18:01,840 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 18:18:01,840 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 18:18:01,851 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-12-09 18:18:01,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 18:18:01,857 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:18:01,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:18:01,858 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:18:01,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:18:01,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1497170960, now seen corresponding path program 1 times [2020-12-09 18:18:01,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:18:01,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65598222] [2020-12-09 18:18:01,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:18:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:18:02,176 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 18:18:02,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65598222] [2020-12-09 18:18:02,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:18:02,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:18:02,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838167095] [2020-12-09 18:18:02,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:18:02,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:18:02,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:18:02,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:18:02,192 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-12-09 18:18:02,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:18:02,528 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-12-09 18:18:02,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:18:02,529 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 18:18:02,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:18:02,538 INFO L225 Difference]: With dead ends: 251 [2020-12-09 18:18:02,538 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 18:18:02,540 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 18:18:02,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 18:18:02,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 18:18:02,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 18:18:02,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2020-12-09 18:18:02,576 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2020-12-09 18:18:02,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:18:02,577 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2020-12-09 18:18:02,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:18:02,577 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2020-12-09 18:18:02,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-09 18:18:02,580 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:18:02,580 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:18:02,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 18:18:02,580 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:18:02,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:18:02,581 INFO L82 PathProgramCache]: Analyzing trace with hash -179277691, now seen corresponding path program 1 times [2020-12-09 18:18:02,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:18:02,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839532080] [2020-12-09 18:18:02,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:18:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:18:02,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:18:02,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839532080] [2020-12-09 18:18:02,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:18:02,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:18:02,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110358973] [2020-12-09 18:18:02,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:18:02,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:18:02,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:18:02,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:18:02,767 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand 4 states. [2020-12-09 18:18:03,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:18:03,235 INFO L93 Difference]: Finished difference Result 563 states and 1044 transitions. [2020-12-09 18:18:03,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:18:03,236 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-12-09 18:18:03,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:18:03,239 INFO L225 Difference]: With dead ends: 563 [2020-12-09 18:18:03,239 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 18:18:03,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:18:03,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 18:18:03,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 18:18:03,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 18:18:03,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 523 transitions. [2020-12-09 18:18:03,262 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 523 transitions. Word has length 84 [2020-12-09 18:18:03,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:18:03,262 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 523 transitions. [2020-12-09 18:18:03,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:18:03,263 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 523 transitions. [2020-12-09 18:18:03,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-09 18:18:03,267 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:18:03,268 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:18:03,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 18:18:03,268 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:18:03,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:18:03,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1174921839, now seen corresponding path program 1 times [2020-12-09 18:18:03,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:18:03,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158342740] [2020-12-09 18:18:03,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:18:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:18:03,331 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:18:03,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158342740] [2020-12-09 18:18:03,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:18:03,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:18:03,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579289640] [2020-12-09 18:18:03,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:18:03,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:18:03,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:18:03,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:18:03,334 INFO L87 Difference]: Start difference. First operand 323 states and 523 transitions. Second operand 3 states. [2020-12-09 18:18:03,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:18:03,594 INFO L93 Difference]: Finished difference Result 965 states and 1566 transitions. [2020-12-09 18:18:03,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:18:03,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-09 18:18:03,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:18:03,598 INFO L225 Difference]: With dead ends: 965 [2020-12-09 18:18:03,598 INFO L226 Difference]: Without dead ends: 643 [2020-12-09 18:18:03,600 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 18:18:03,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-12-09 18:18:03,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2020-12-09 18:18:03,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-12-09 18:18:03,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 880 transitions. [2020-12-09 18:18:03,631 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 880 transitions. Word has length 98 [2020-12-09 18:18:03,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:18:03,631 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 880 transitions. [2020-12-09 18:18:03,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:18:03,631 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 880 transitions. [2020-12-09 18:18:03,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-09 18:18:03,634 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:18:03,635 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:18:03,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 18:18:03,635 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:18:03,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:18:03,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1029717734, now seen corresponding path program 1 times [2020-12-09 18:18:03,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:18:03,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117104424] [2020-12-09 18:18:03,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:18:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:18:03,674 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:18:03,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117104424] [2020-12-09 18:18:03,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:18:03,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:18:03,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862764890] [2020-12-09 18:18:03,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:18:03,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:18:03,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:18:03,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:18:03,676 INFO L87 Difference]: Start difference. First operand 643 states and 880 transitions. Second operand 3 states. [2020-12-09 18:18:03,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:18:03,951 INFO L93 Difference]: Finished difference Result 1605 states and 2280 transitions. [2020-12-09 18:18:03,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:18:03,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-09 18:18:03,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:18:03,958 INFO L225 Difference]: With dead ends: 1605 [2020-12-09 18:18:03,958 INFO L226 Difference]: Without dead ends: 963 [2020-12-09 18:18:03,960 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 18:18:03,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-12-09 18:18:03,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2020-12-09 18:18:03,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-12-09 18:18:03,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1361 transitions. [2020-12-09 18:18:03,997 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1361 transitions. Word has length 103 [2020-12-09 18:18:03,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:18:03,998 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1361 transitions. [2020-12-09 18:18:03,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:18:03,998 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1361 transitions. [2020-12-09 18:18:04,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-09 18:18:04,000 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:18:04,001 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:18:04,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 18:18:04,001 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:18:04,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:18:04,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1100208432, now seen corresponding path program 1 times [2020-12-09 18:18:04,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:18:04,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859606920] [2020-12-09 18:18:04,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:18:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:18:04,139 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:18:04,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859606920] [2020-12-09 18:18:04,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959714608] [2020-12-09 18:18:04,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_926d8b03-0183-4c90-b3f5-58ef63a53413/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 18:18:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:18:04,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 18:18:04,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:18:04,304 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 18:18:04,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:18:04,388 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 18:18:04,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 18:18:04,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 18:18:04,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741287326] [2020-12-09 18:18:04,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:18:04,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:18:04,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:18:04,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 18:18:04,390 INFO L87 Difference]: Start difference. First operand 963 states and 1361 transitions. Second operand 3 states. [2020-12-09 18:18:04,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:18:04,698 INFO L93 Difference]: Finished difference Result 2245 states and 3227 transitions. [2020-12-09 18:18:04,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:18:04,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-09 18:18:04,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:18:04,706 INFO L225 Difference]: With dead ends: 2245 [2020-12-09 18:18:04,706 INFO L226 Difference]: Without dead ends: 1283 [2020-12-09 18:18:04,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 18:18:04,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2020-12-09 18:18:04,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1203. [2020-12-09 18:18:04,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-12-09 18:18:04,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1649 transitions. [2020-12-09 18:18:04,738 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1649 transitions. Word has length 107 [2020-12-09 18:18:04,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:18:04,738 INFO L481 AbstractCegarLoop]: Abstraction has 1203 states and 1649 transitions. [2020-12-09 18:18:04,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:18:04,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1649 transitions. [2020-12-09 18:18:04,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-12-09 18:18:04,740 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:18:04,741 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:18:04,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:18:04,941 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:18:04,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:18:04,942 INFO L82 PathProgramCache]: Analyzing trace with hash -423683794, now seen corresponding path program 1 times [2020-12-09 18:18:04,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:18:04,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198121248] [2020-12-09 18:18:04,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:18:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:18:04,989 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:18:04,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198121248] [2020-12-09 18:18:04,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:18:04,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:18:04,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366730632] [2020-12-09 18:18:04,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:18:04,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:18:04,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:18:04,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:18:04,991 INFO L87 Difference]: Start difference. First operand 1203 states and 1649 transitions. Second operand 3 states. [2020-12-09 18:18:05,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:18:05,282 INFO L93 Difference]: Finished difference Result 3205 states and 4367 transitions. [2020-12-09 18:18:05,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:18:05,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2020-12-09 18:18:05,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:18:05,289 INFO L225 Difference]: With dead ends: 3205 [2020-12-09 18:18:05,289 INFO L226 Difference]: Without dead ends: 1843 [2020-12-09 18:18:05,291 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 18:18:05,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2020-12-09 18:18:05,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1763. [2020-12-09 18:18:05,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2020-12-09 18:18:05,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2318 transitions. [2020-12-09 18:18:05,320 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2318 transitions. Word has length 120 [2020-12-09 18:18:05,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:18:05,320 INFO L481 AbstractCegarLoop]: Abstraction has 1763 states and 2318 transitions. [2020-12-09 18:18:05,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:18:05,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2318 transitions. [2020-12-09 18:18:05,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-12-09 18:18:05,323 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:18:05,323 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 18:18:05,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 18:18:05,323 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:18:05,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:18:05,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1268602772, now seen corresponding path program 1 times [2020-12-09 18:18:05,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:18:05,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23331986] [2020-12-09 18:18:05,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:18:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:18:05,376 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 18:18:05,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23331986] [2020-12-09 18:18:05,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:18:05,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:18:05,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705091127] [2020-12-09 18:18:05,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:18:05,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:18:05,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:18:05,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:18:05,379 INFO L87 Difference]: Start difference. First operand 1763 states and 2318 transitions. Second operand 3 states. [2020-12-09 18:18:05,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:18:05,643 INFO L93 Difference]: Finished difference Result 4005 states and 5302 transitions. [2020-12-09 18:18:05,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:18:05,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2020-12-09 18:18:05,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:18:05,649 INFO L225 Difference]: With dead ends: 4005 [2020-12-09 18:18:05,650 INFO L226 Difference]: Without dead ends: 1523 [2020-12-09 18:18:05,652 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 18:18:05,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2020-12-09 18:18:05,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1523. [2020-12-09 18:18:05,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1523 states. [2020-12-09 18:18:05,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1873 transitions. [2020-12-09 18:18:05,674 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1873 transitions. Word has length 124 [2020-12-09 18:18:05,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:18:05,675 INFO L481 AbstractCegarLoop]: Abstraction has 1523 states and 1873 transitions. [2020-12-09 18:18:05,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:18:05,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1873 transitions. [2020-12-09 18:18:05,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-09 18:18:05,677 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:18:05,677 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:18:05,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 18:18:05,678 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:18:05,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:18:05,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1410424660, now seen corresponding path program 1 times [2020-12-09 18:18:05,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:18:05,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231940095] [2020-12-09 18:18:05,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:18:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:18:05,719 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-12-09 18:18:05,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231940095] [2020-12-09 18:18:05,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:18:05,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:18:05,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913281244] [2020-12-09 18:18:05,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 18:18:05,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:18:05,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 18:18:05,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 18:18:05,721 INFO L87 Difference]: Start difference. First operand 1523 states and 1873 transitions. Second operand 3 states. [2020-12-09 18:18:05,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:18:05,982 INFO L93 Difference]: Finished difference Result 3605 states and 4436 transitions. [2020-12-09 18:18:05,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 18:18:05,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 145 [2020-12-09 18:18:05,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:18:05,989 INFO L225 Difference]: With dead ends: 3605 [2020-12-09 18:18:05,989 INFO L226 Difference]: Without dead ends: 1763 [2020-12-09 18:18:05,991 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 18:18:05,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2020-12-09 18:18:06,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1443. [2020-12-09 18:18:06,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1443 states. [2020-12-09 18:18:06,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1634 transitions. [2020-12-09 18:18:06,015 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1634 transitions. Word has length 145 [2020-12-09 18:18:06,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:18:06,015 INFO L481 AbstractCegarLoop]: Abstraction has 1443 states and 1634 transitions. [2020-12-09 18:18:06,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 18:18:06,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1634 transitions. [2020-12-09 18:18:06,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-09 18:18:06,017 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:18:06,018 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-09 18:18:06,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 18:18:06,018 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:18:06,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:18:06,018 INFO L82 PathProgramCache]: Analyzing trace with hash 2063284536, now seen corresponding path program 1 times [2020-12-09 18:18:06,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:18:06,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041810271] [2020-12-09 18:18:06,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:18:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:18:06,211 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 65 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:18:06,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041810271] [2020-12-09 18:18:06,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688898134] [2020-12-09 18:18:06,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_926d8b03-0183-4c90-b3f5-58ef63a53413/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 18:18:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:18:06,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 18:18:06,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:18:06,366 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 18:18:06,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:18:06,458 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 18:18:06,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 18:18:06,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 7 [2020-12-09 18:18:06,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522492403] [2020-12-09 18:18:06,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:18:06,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:18:06,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:18:06,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 18:18:06,460 INFO L87 Difference]: Start difference. First operand 1443 states and 1634 transitions. Second operand 4 states. [2020-12-09 18:18:06,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:18:06,726 INFO L93 Difference]: Finished difference Result 3445 states and 3940 transitions. [2020-12-09 18:18:06,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:18:06,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-12-09 18:18:06,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:18:06,733 INFO L225 Difference]: With dead ends: 3445 [2020-12-09 18:18:06,734 INFO L226 Difference]: Without dead ends: 1843 [2020-12-09 18:18:06,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 18:18:06,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2020-12-09 18:18:06,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1363. [2020-12-09 18:18:06,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1363 states. [2020-12-09 18:18:06,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1541 transitions. [2020-12-09 18:18:06,755 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1541 transitions. Word has length 154 [2020-12-09 18:18:06,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:18:06,756 INFO L481 AbstractCegarLoop]: Abstraction has 1363 states and 1541 transitions. [2020-12-09 18:18:06,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:18:06,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1541 transitions. [2020-12-09 18:18:06,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-12-09 18:18:06,760 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:18:06,760 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 18:18:06,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:18:06,961 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:18:06,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:18:06,962 INFO L82 PathProgramCache]: Analyzing trace with hash 216999313, now seen corresponding path program 1 times [2020-12-09 18:18:06,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:18:06,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905655776] [2020-12-09 18:18:06,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:18:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:18:07,170 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 175 proven. 96 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-09 18:18:07,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905655776] [2020-12-09 18:18:07,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662330101] [2020-12-09 18:18:07,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_926d8b03-0183-4c90-b3f5-58ef63a53413/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 18:18:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:18:07,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 18:18:07,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:18:07,380 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 229 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-12-09 18:18:07,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:18:07,532 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 229 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-12-09 18:18:07,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [558337899] [2020-12-09 18:18:07,550 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2020-12-09 18:18:07,550 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 18:18:07,554 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 18:18:07,557 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 18:18:07,558 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 18:18:14,131 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 18:18:14,258 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 18:18:14,419 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 18:18:14,546 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 18:18:14,740 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 148 [2020-12-09 18:18:14,867 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 18:18:15,001 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 18:18:15,127 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 18:18:15,265 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-12-09 18:18:18,421 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 145 [2020-12-09 18:18:22,852 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 10 [2020-12-09 18:18:22,886 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 10 [2020-12-09 18:18:22,988 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 10 [2020-12-09 18:18:26,081 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 18:18:26,396 WARN L197 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 96 [2020-12-09 18:18:26,588 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-12-09 18:18:26,935 WARN L197 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 101 [2020-12-09 18:18:27,165 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2020-12-09 18:18:27,448 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 109 [2020-12-09 18:18:27,825 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2020-12-09 18:18:30,219 WARN L197 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 112 [2020-12-09 18:18:35,652 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 18:18:35,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 18:18:35,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2020-12-09 18:18:35,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104267745] [2020-12-09 18:18:35,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 18:18:35,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:18:35,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 18:18:35,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-12-09 18:18:35,654 INFO L87 Difference]: Start difference. First operand 1363 states and 1541 transitions. Second operand 8 states. [2020-12-09 18:18:36,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:18:36,387 INFO L93 Difference]: Finished difference Result 2518 states and 2812 transitions. [2020-12-09 18:18:36,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 18:18:36,388 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 223 [2020-12-09 18:18:36,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:18:36,390 INFO L225 Difference]: With dead ends: 2518 [2020-12-09 18:18:36,391 INFO L226 Difference]: Without dead ends: 741 [2020-12-09 18:18:36,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 480 SyntacticMatches, 182 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1852 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-12-09 18:18:36,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-12-09 18:18:36,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 723. [2020-12-09 18:18:36,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-12-09 18:18:36,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 763 transitions. [2020-12-09 18:18:36,404 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 763 transitions. Word has length 223 [2020-12-09 18:18:36,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:18:36,404 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 763 transitions. [2020-12-09 18:18:36,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 18:18:36,405 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 763 transitions. [2020-12-09 18:18:36,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-12-09 18:18:36,407 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:18:36,407 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:18:36,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-09 18:18:36,608 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:18:36,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:18:36,609 INFO L82 PathProgramCache]: Analyzing trace with hash -709734642, now seen corresponding path program 1 times [2020-12-09 18:18:36,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:18:36,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156030584] [2020-12-09 18:18:36,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:18:36,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:18:36,870 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 207 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:18:36,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156030584] [2020-12-09 18:18:36,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090129499] [2020-12-09 18:18:36,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_926d8b03-0183-4c90-b3f5-58ef63a53413/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 18:18:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:18:36,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 18:18:36,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:18:37,305 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2020-12-09 18:18:37,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:18:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2020-12-09 18:18:37,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 18:18:37,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7] total 10 [2020-12-09 18:18:37,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961742352] [2020-12-09 18:18:37,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 18:18:37,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:18:37,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 18:18:37,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-12-09 18:18:37,653 INFO L87 Difference]: Start difference. First operand 723 states and 763 transitions. Second operand 5 states. [2020-12-09 18:18:37,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:18:37,985 INFO L93 Difference]: Finished difference Result 803 states and 844 transitions. [2020-12-09 18:18:37,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 18:18:37,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 273 [2020-12-09 18:18:37,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:18:37,986 INFO L225 Difference]: With dead ends: 803 [2020-12-09 18:18:37,986 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 18:18:37,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-12-09 18:18:37,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 18:18:37,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 18:18:37,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 18:18:37,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 18:18:37,987 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 273 [2020-12-09 18:18:37,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:18:37,988 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 18:18:37,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 18:18:37,988 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 18:18:37,988 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 18:18:38,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1232,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:18:38,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 18:18:38,600 WARN L197 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-12-09 18:18:38,895 WARN L197 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-12-09 18:18:38,897 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-12-09 18:18:38,897 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-12-09 18:18:38,897 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-12-09 18:18:38,898 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-12-09 18:18:38,898 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-12-09 18:18:38,898 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-12-09 18:18:38,898 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-12-09 18:18:38,898 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-12-09 18:18:38,898 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-12-09 18:18:38,898 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-12-09 18:18:38,898 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-12-09 18:18:38,898 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-12-09 18:18:38,898 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-12-09 18:18:38,898 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-12-09 18:18:38,898 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-12-09 18:18:38,898 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-12-09 18:18:38,898 INFO L262 CegarLoopResult]: For program point L445-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 18:18:38,898 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-12-09 18:18:38,898 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-12-09 18:18:38,898 INFO L262 CegarLoopResult]: For program point L448-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 18:18:38,899 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-12-09 18:18:38,899 INFO L262 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-12-09 18:18:38,899 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-12-09 18:18:38,899 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-12-09 18:18:38,899 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-12-09 18:18:38,899 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-12-09 18:18:38,899 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-12-09 18:18:38,899 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-12-09 18:18:38,899 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-12-09 18:18:38,899 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 18:18:38,899 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-12-09 18:18:38,899 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-12-09 18:18:38,899 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-12-09 18:18:38,899 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-12-09 18:18:38,899 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-12-09 18:18:38,899 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-12-09 18:18:38,899 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-12-09 18:18:38,899 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-12-09 18:18:38,900 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-12-09 18:18:38,900 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 449) no Hoare annotation was computed. [2020-12-09 18:18:38,900 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-12-09 18:18:38,900 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-12-09 18:18:38,900 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-12-09 18:18:38,900 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-12-09 18:18:38,900 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-12-09 18:18:38,900 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-12-09 18:18:38,900 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-12-09 18:18:38,900 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-12-09 18:18:38,900 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-12-09 18:18:38,900 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-12-09 18:18:38,900 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-12-09 18:18:38,900 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-12-09 18:18:38,900 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-12-09 18:18:38,900 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-12-09 18:18:38,900 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-12-09 18:18:38,901 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-12-09 18:18:38,901 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse8 (= ~a11~0 1))) (let ((.cse0 (<= ~a11~0 0)) (.cse1 (= ~a19~0 1)) (.cse9 (<= ~a19~0 0)) (.cse2 (= ~a25~0 0)) (.cse5 (<= ~a28~0 10)) (.cse3 (= ~a21~0 1)) (.cse4 (= ~a17~0 8)) (.cse6 (= ~a25~0 1)) (.cse10 (not .cse8)) (.cse7 (<= ~a28~0 7))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse1 .cse3 .cse4 .cse6 .cse7) (and .cse2 .cse3 .cse4 .cse5 (< 7 ~a28~0)) (and .cse2 .cse3 .cse4 (not .cse1) (= 7 ~a28~0) .cse8) (and .cse0 .cse9 .cse2 .cse3 .cse4) (and .cse1 .cse3 .cse4 .cse6 .cse10) (and .cse1 (<= 10 ~a28~0) .cse3 .cse4 .cse5) (and .cse3 .cse4 .cse6 .cse10 (= ~a28~0 10)) (and (<= 9 ~a28~0) .cse1 .cse3 .cse4 .cse6 .cse5) (and .cse9 .cse2 .cse3 .cse4 .cse5) (and .cse3 .cse4 .cse6 .cse10 .cse7) (<= ~a17~0 7)))) [2020-12-09 18:18:38,901 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-12-09 18:18:38,901 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-12-09 18:18:38,901 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-12-09 18:18:38,901 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-12-09 18:18:38,901 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-12-09 18:18:38,901 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-12-09 18:18:38,901 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-12-09 18:18:38,901 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-12-09 18:18:38,901 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 18:18:38,902 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-12-09 18:18:38,902 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-12-09 18:18:38,902 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse8 (= ~a11~0 1))) (let ((.cse0 (<= ~a11~0 0)) (.cse1 (= ~a19~0 1)) (.cse9 (<= ~a19~0 0)) (.cse2 (= ~a25~0 0)) (.cse5 (<= ~a28~0 10)) (.cse3 (= ~a21~0 1)) (.cse4 (= ~a17~0 8)) (.cse6 (= ~a25~0 1)) (.cse10 (not .cse8)) (.cse7 (<= ~a28~0 7))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse1 .cse3 .cse4 .cse6 .cse7) (and .cse2 .cse3 .cse4 .cse5 (< 7 ~a28~0)) (and .cse2 .cse3 .cse4 (not .cse1) (= 7 ~a28~0) .cse8) (and .cse0 .cse9 .cse2 .cse3 .cse4) (and .cse1 .cse3 .cse4 .cse6 .cse10) (and .cse1 (<= 10 ~a28~0) .cse3 .cse4 .cse5) (and .cse3 .cse4 .cse6 .cse10 (= ~a28~0 10)) (and (<= 9 ~a28~0) .cse1 .cse3 .cse4 .cse6 .cse5) (and .cse9 .cse2 .cse3 .cse4 .cse5) (and .cse3 .cse4 .cse6 .cse10 .cse7) (<= ~a17~0 7)))) [2020-12-09 18:18:38,902 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-12-09 18:18:38,902 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-12-09 18:18:38,902 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-12-09 18:18:38,902 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-12-09 18:18:38,902 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-12-09 18:18:38,902 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-12-09 18:18:38,902 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-12-09 18:18:38,902 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-12-09 18:18:38,902 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-12-09 18:18:38,902 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-12-09 18:18:38,902 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-12-09 18:18:38,902 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-12-09 18:18:38,903 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-12-09 18:18:38,903 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-12-09 18:18:38,903 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-12-09 18:18:38,903 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-12-09 18:18:38,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:18:38 BoogieIcfgContainer [2020-12-09 18:18:38,919 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 18:18:38,919 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 18:18:38,919 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 18:18:38,919 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 18:18:38,920 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:18:01" (3/4) ... [2020-12-09 18:18:38,922 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 18:18:38,938 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-12-09 18:18:38,939 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 18:18:38,941 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 18:18:38,942 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 18:18:39,017 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_926d8b03-0183-4c90-b3f5-58ef63a53413/bin/utaipan/witness.graphml [2020-12-09 18:18:39,017 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 18:18:39,018 INFO L168 Benchmark]: Toolchain (without parser) took 39116.46 ms. Allocated memory was 136.3 MB in the beginning and 591.4 MB in the end (delta: 455.1 MB). Free memory was 105.9 MB in the beginning and 329.4 MB in the end (delta: -223.6 MB). Peak memory consumption was 232.3 MB. Max. memory is 16.1 GB. [2020-12-09 18:18:39,018 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 73.4 MB. Free memory was 39.8 MB in the beginning and 39.8 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:18:39,018 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.26 ms. Allocated memory is still 136.3 MB. Free memory was 105.7 MB in the beginning and 79.5 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-12-09 18:18:39,019 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.24 ms. Allocated memory is still 136.3 MB. Free memory was 79.5 MB in the beginning and 74.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 18:18:39,019 INFO L168 Benchmark]: Boogie Preprocessor took 44.82 ms. Allocated memory is still 136.3 MB. Free memory was 74.2 MB in the beginning and 69.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 18:18:39,019 INFO L168 Benchmark]: RCFGBuilder took 1405.84 ms. Allocated memory was 136.3 MB in the beginning and 190.8 MB in the end (delta: 54.5 MB). Free memory was 69.7 MB in the beginning and 61.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 68.8 MB. Max. memory is 16.1 GB. [2020-12-09 18:18:39,019 INFO L168 Benchmark]: TraceAbstraction took 37137.75 ms. Allocated memory was 190.8 MB in the beginning and 591.4 MB in the end (delta: 400.6 MB). Free memory was 61.0 MB in the beginning and 344.1 MB in the end (delta: -283.1 MB). Peak memory consumption was 117.5 MB. Max. memory is 16.1 GB. [2020-12-09 18:18:39,020 INFO L168 Benchmark]: Witness Printer took 98.24 ms. Allocated memory is still 591.4 MB. Free memory was 344.1 MB in the beginning and 329.4 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 18:18:39,021 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 73.4 MB. Free memory was 39.8 MB in the beginning and 39.8 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 366.26 ms. Allocated memory is still 136.3 MB. Free memory was 105.7 MB in the beginning and 79.5 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.24 ms. Allocated memory is still 136.3 MB. Free memory was 79.5 MB in the beginning and 74.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.82 ms. Allocated memory is still 136.3 MB. Free memory was 74.2 MB in the beginning and 69.7 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1405.84 ms. Allocated memory was 136.3 MB in the beginning and 190.8 MB in the end (delta: 54.5 MB). Free memory was 69.7 MB in the beginning and 61.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 68.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 37137.75 ms. Allocated memory was 190.8 MB in the beginning and 591.4 MB in the end (delta: 400.6 MB). Free memory was 61.0 MB in the beginning and 344.1 MB in the end (delta: -283.1 MB). Peak memory consumption was 117.5 MB. Max. memory is 16.1 GB. * Witness Printer took 98.24 ms. Allocated memory is still 591.4 MB. Free memory was 344.1 MB in the beginning and 329.4 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: 449]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((((((((((((a11 <= 0 && a19 == 1) && a25 == 0) && a21 == 1) && a17 == 8) && a28 <= 10) || ((((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1) && a28 <= 7)) || ((((a25 == 0 && a21 == 1) && a17 == 8) && a28 <= 10) && 7 < a28)) || (((((a25 == 0 && a21 == 1) && a17 == 8) && !(a19 == 1)) && 7 == a28) && a11 == 1)) || ((((a11 <= 0 && a19 <= 0) && a25 == 0) && a21 == 1) && a17 == 8)) || ((((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1) && !(a11 == 1))) || ((((a19 == 1 && 10 <= a28) && a21 == 1) && a17 == 8) && a28 <= 10)) || ((((a21 == 1 && a17 == 8) && a25 == 1) && !(a11 == 1)) && a28 == 10)) || (((((9 <= a28 && a19 == 1) && a21 == 1) && a17 == 8) && a25 == 1) && a28 <= 10)) || ((((a19 <= 0 && a25 == 0) && a21 == 1) && a17 == 8) && a28 <= 10)) || ((((a21 == 1 && a17 == 8) && a25 == 1) && !(a11 == 1)) && a28 <= 7)) || a17 <= 7 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((((((((((a11 <= 0 && a19 == 1) && a25 == 0) && a21 == 1) && a17 == 8) && a28 <= 10) || ((((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1) && a28 <= 7)) || ((((a25 == 0 && a21 == 1) && a17 == 8) && a28 <= 10) && 7 < a28)) || (((((a25 == 0 && a21 == 1) && a17 == 8) && !(a19 == 1)) && 7 == a28) && a11 == 1)) || ((((a11 <= 0 && a19 <= 0) && a25 == 0) && a21 == 1) && a17 == 8)) || ((((a19 == 1 && a21 == 1) && a17 == 8) && a25 == 1) && !(a11 == 1))) || ((((a19 == 1 && 10 <= a28) && a21 == 1) && a17 == 8) && a28 <= 10)) || ((((a21 == 1 && a17 == 8) && a25 == 1) && !(a11 == 1)) && a28 == 10)) || (((((9 <= a28 && a19 == 1) && a21 == 1) && a17 == 8) && a25 == 1) && a28 <= 10)) || ((((a19 <= 0 && a25 == 0) && a21 == 1) && a17 == 8) && a28 <= 10)) || ((((a21 == 1 && a17 == 8) && a25 == 1) && !(a11 == 1)) && a28 <= 7)) || a17 <= 7 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 36.3s, OverallIterations: 11, TraceHistogramMax: 6, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 863 SDtfs, 892 SDslu, 116 SDs, 0 SdLazy, 4358 SolverSat, 755 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1780 GetRequests, 1549 SyntacticMatches, 183 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1874 ImplicationChecksByTransitivity, 9.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1763occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 978 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 79 NumberOfFragments, 387 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2034 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 556 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 2268 NumberOfCodeBlocks, 2268 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 3006 ConstructedInterpolants, 0 QuantifiedInterpolants, 3511538 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1461 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 19 InterpolantComputations, 13 PerfectInterpolantSequences, 2338/2714 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...