./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1e2b2c73-4c8d-4ee2-9fdb-e0f9e371b1cc/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1e2b2c73-4c8d-4ee2-9fdb-e0f9e371b1cc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1e2b2c73-4c8d-4ee2-9fdb-e0f9e371b1cc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1e2b2c73-4c8d-4ee2-9fdb-e0f9e371b1cc/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1e2b2c73-4c8d-4ee2-9fdb-e0f9e371b1cc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1e2b2c73-4c8d-4ee2-9fdb-e0f9e371b1cc/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 a436e4bf9da4ee1e6356d8c8c6b3cd5e98b60423 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:31:32,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:31:32,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:31:32,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:31:32,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:31:32,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:31:32,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:31:32,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:31:32,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:31:32,484 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:31:32,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:31:32,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:31:32,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:31:32,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:31:32,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:31:32,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:31:32,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:31:32,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:31:32,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:31:32,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:31:32,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:31:32,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:31:32,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:31:32,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:31:32,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:31:32,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:31:32,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:31:32,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:31:32,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:31:32,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:31:32,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:31:32,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:31:32,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:31:32,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:31:32,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:31:32,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:31:32,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:31:32,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:31:32,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:31:32,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:31:32,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:31:32,539 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1e2b2c73-4c8d-4ee2-9fdb-e0f9e371b1cc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:31:32,575 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:31:32,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:31:32,576 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:31:32,576 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:31:32,577 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:31:32,577 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:31:32,577 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:31:32,577 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:31:32,578 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:31:32,578 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:31:32,578 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:31:32,578 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:31:32,579 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:31:32,579 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:31:32,579 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:31:32,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:31:32,580 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:31:32,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:31:32,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:31:32,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:31:32,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:31:32,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:31:32,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:31:32,582 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:31:32,582 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:31:32,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:31:32,582 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:31:32,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:31:32,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:31:32,583 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:31:32,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:31:32,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:31:32,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:31:32,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:31:32,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:31:32,584 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:31:32,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:31:32,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:31:32,585 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:31:32,585 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:31:32,586 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_1e2b2c73-4c8d-4ee2-9fdb-e0f9e371b1cc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1e2b2c73-4c8d-4ee2-9fdb-e0f9e371b1cc/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a436e4bf9da4ee1e6356d8c8c6b3cd5e98b60423 [2020-11-28 07:31:32,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:31:32,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:31:32,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:31:32,871 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:31:32,871 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:31:32,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1e2b2c73-4c8d-4ee2-9fdb-e0f9e371b1cc/bin/utaipan/../../sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c [2020-11-28 07:31:32,958 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1e2b2c73-4c8d-4ee2-9fdb-e0f9e371b1cc/bin/utaipan/data/f175c56a4/83f6664161e841ac9da335d27a1e16da/FLAG9573711b1 [2020-11-28 07:31:33,352 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:31:33,353 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1e2b2c73-4c8d-4ee2-9fdb-e0f9e371b1cc/sv-benchmarks/c/systemc/pc_sfifo_1.cil-2.c [2020-11-28 07:31:33,362 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1e2b2c73-4c8d-4ee2-9fdb-e0f9e371b1cc/bin/utaipan/data/f175c56a4/83f6664161e841ac9da335d27a1e16da/FLAG9573711b1 [2020-11-28 07:31:33,731 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1e2b2c73-4c8d-4ee2-9fdb-e0f9e371b1cc/bin/utaipan/data/f175c56a4/83f6664161e841ac9da335d27a1e16da [2020-11-28 07:31:33,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:31:33,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:31:33,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:31:33,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:31:33,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:31:33,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:31:33" (1/1) ... [2020-11-28 07:31:33,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19ca0104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:33, skipping insertion in model container [2020-11-28 07:31:33,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:31:33" (1/1) ... [2020-11-28 07:31:33,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:31:33,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:31:34,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:31:34,028 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:31:34,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:31:34,085 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:31:34,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:34 WrapperNode [2020-11-28 07:31:34,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:31:34,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:31:34,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:31:34,088 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:31:34,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:34" (1/1) ... [2020-11-28 07:31:34,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:34" (1/1) ... [2020-11-28 07:31:34,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:31:34,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:31:34,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:31:34,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:31:34,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:34" (1/1) ... [2020-11-28 07:31:34,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:34" (1/1) ... [2020-11-28 07:31:34,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:34" (1/1) ... [2020-11-28 07:31:34,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:34" (1/1) ... [2020-11-28 07:31:34,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:34" (1/1) ... [2020-11-28 07:31:34,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:34" (1/1) ... [2020-11-28 07:31:34,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:34" (1/1) ... [2020-11-28 07:31:34,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:31:34,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:31:34,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:31:34,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:31:34,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1e2b2c73-4c8d-4ee2-9fdb-e0f9e371b1cc/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:31:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:31:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:31:34,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:31:34,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:31:35,168 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:31:35,169 INFO L298 CfgBuilder]: Removed 46 assume(true) statements. [2020-11-28 07:31:35,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:31:35 BoogieIcfgContainer [2020-11-28 07:31:35,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:31:35,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:31:35,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:31:35,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:31:35,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:31:33" (1/3) ... [2020-11-28 07:31:35,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f2fa72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:31:35, skipping insertion in model container [2020-11-28 07:31:35,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:31:34" (2/3) ... [2020-11-28 07:31:35,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f2fa72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:31:35, skipping insertion in model container [2020-11-28 07:31:35,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:31:35" (3/3) ... [2020-11-28 07:31:35,180 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2.c [2020-11-28 07:31:35,194 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:31:35,199 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 07:31:35,213 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 07:31:35,233 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:31:35,233 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:31:35,233 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:31:35,236 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:31:35,236 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:31:35,236 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:31:35,237 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:31:35,237 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:31:35,250 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-11-28 07:31:35,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:31:35,256 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:31:35,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:31:35,257 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:31:35,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:31:35,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1933829802, now seen corresponding path program 1 times [2020-11-28 07:31:35,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:31:35,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400709146] [2020-11-28 07:31:35,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:31:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:31:35,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:31:35,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400709146] [2020-11-28 07:31:35,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:31:35,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:31:35,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950624292] [2020-11-28 07:31:35,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:31:35,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:31:35,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:31:35,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:31:35,442 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2020-11-28 07:31:35,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:31:35,505 INFO L93 Difference]: Finished difference Result 116 states and 182 transitions. [2020-11-28 07:31:35,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:31:35,507 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-11-28 07:31:35,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:31:35,517 INFO L225 Difference]: With dead ends: 116 [2020-11-28 07:31:35,517 INFO L226 Difference]: Without dead ends: 69 [2020-11-28 07:31:35,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:31:35,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-28 07:31:35,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2020-11-28 07:31:35,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-28 07:31:35,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 96 transitions. [2020-11-28 07:31:35,578 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 96 transitions. Word has length 18 [2020-11-28 07:31:35,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:31:35,579 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 96 transitions. [2020-11-28 07:31:35,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:31:35,579 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 96 transitions. [2020-11-28 07:31:35,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 07:31:35,581 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:31:35,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:31:35,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:31:35,582 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:31:35,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:31:35,584 INFO L82 PathProgramCache]: Analyzing trace with hash -389155719, now seen corresponding path program 1 times [2020-11-28 07:31:35,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:31:35,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600251462] [2020-11-28 07:31:35,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:31:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:31:35,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:31:35,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600251462] [2020-11-28 07:31:35,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:31:35,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:31:35,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909930174] [2020-11-28 07:31:35,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:31:35,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:31:35,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:31:35,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:31:35,701 INFO L87 Difference]: Start difference. First operand 65 states and 96 transitions. Second operand 3 states. [2020-11-28 07:31:35,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:31:35,757 INFO L93 Difference]: Finished difference Result 188 states and 276 transitions. [2020-11-28 07:31:35,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:31:35,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-11-28 07:31:35,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:31:35,761 INFO L225 Difference]: With dead ends: 188 [2020-11-28 07:31:35,761 INFO L226 Difference]: Without dead ends: 124 [2020-11-28 07:31:35,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:31:35,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-28 07:31:35,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 120. [2020-11-28 07:31:35,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-11-28 07:31:35,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 174 transitions. [2020-11-28 07:31:35,792 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 174 transitions. Word has length 19 [2020-11-28 07:31:35,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:31:35,793 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 174 transitions. [2020-11-28 07:31:35,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:31:35,793 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 174 transitions. [2020-11-28 07:31:35,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 07:31:35,797 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:31:35,797 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] [2020-11-28 07:31:35,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:31:35,798 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:31:35,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:31:35,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1666242636, now seen corresponding path program 1 times [2020-11-28 07:31:35,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:31:35,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244974356] [2020-11-28 07:31:35,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:31:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:31:35,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:31:35,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244974356] [2020-11-28 07:31:35,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:31:35,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:31:35,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236181749] [2020-11-28 07:31:35,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:31:35,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:31:35,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:31:35,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:31:35,884 INFO L87 Difference]: Start difference. First operand 120 states and 174 transitions. Second operand 3 states. [2020-11-28 07:31:35,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:31:35,960 INFO L93 Difference]: Finished difference Result 290 states and 424 transitions. [2020-11-28 07:31:35,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:31:35,961 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-11-28 07:31:35,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:31:35,963 INFO L225 Difference]: With dead ends: 290 [2020-11-28 07:31:35,967 INFO L226 Difference]: Without dead ends: 171 [2020-11-28 07:31:35,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:31:35,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-11-28 07:31:35,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 155. [2020-11-28 07:31:36,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-11-28 07:31:36,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 225 transitions. [2020-11-28 07:31:36,004 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 225 transitions. Word has length 20 [2020-11-28 07:31:36,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:31:36,005 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 225 transitions. [2020-11-28 07:31:36,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:31:36,005 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 225 transitions. [2020-11-28 07:31:36,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-28 07:31:36,008 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:31:36,008 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:31:36,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:31:36,009 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:31:36,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:31:36,010 INFO L82 PathProgramCache]: Analyzing trace with hash 2105500148, now seen corresponding path program 1 times [2020-11-28 07:31:36,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:31:36,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662630940] [2020-11-28 07:31:36,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:31:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:31:36,112 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:31:36,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662630940] [2020-11-28 07:31:36,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:31:36,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:31:36,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411402197] [2020-11-28 07:31:36,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:31:36,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:31:36,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:31:36,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:31:36,115 INFO L87 Difference]: Start difference. First operand 155 states and 225 transitions. Second operand 3 states. [2020-11-28 07:31:36,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:31:36,170 INFO L93 Difference]: Finished difference Result 267 states and 386 transitions. [2020-11-28 07:31:36,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:31:36,174 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-11-28 07:31:36,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:31:36,175 INFO L225 Difference]: With dead ends: 267 [2020-11-28 07:31:36,176 INFO L226 Difference]: Without dead ends: 158 [2020-11-28 07:31:36,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:31:36,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-28 07:31:36,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 149. [2020-11-28 07:31:36,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-11-28 07:31:36,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 211 transitions. [2020-11-28 07:31:36,206 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 211 transitions. Word has length 28 [2020-11-28 07:31:36,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:31:36,206 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 211 transitions. [2020-11-28 07:31:36,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:31:36,207 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 211 transitions. [2020-11-28 07:31:36,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 07:31:36,213 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:31:36,213 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] [2020-11-28 07:31:36,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:31:36,214 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:31:36,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:31:36,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1016785542, now seen corresponding path program 1 times [2020-11-28 07:31:36,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:31:36,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457122408] [2020-11-28 07:31:36,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:31:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:31:36,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:31:36,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457122408] [2020-11-28 07:31:36,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:31:36,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:31:36,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057675390] [2020-11-28 07:31:36,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:31:36,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:31:36,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:31:36,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:31:36,274 INFO L87 Difference]: Start difference. First operand 149 states and 211 transitions. Second operand 3 states. [2020-11-28 07:31:36,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:31:36,317 INFO L93 Difference]: Finished difference Result 317 states and 444 transitions. [2020-11-28 07:31:36,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:31:36,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-11-28 07:31:36,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:31:36,320 INFO L225 Difference]: With dead ends: 317 [2020-11-28 07:31:36,320 INFO L226 Difference]: Without dead ends: 180 [2020-11-28 07:31:36,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:31:36,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-11-28 07:31:36,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2020-11-28 07:31:36,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-11-28 07:31:36,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 246 transitions. [2020-11-28 07:31:36,352 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 246 transitions. Word has length 31 [2020-11-28 07:31:36,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:31:36,352 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 246 transitions. [2020-11-28 07:31:36,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:31:36,353 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 246 transitions. [2020-11-28 07:31:36,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 07:31:36,354 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:31:36,354 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-28 07:31:36,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:31:36,355 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:31:36,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:31:36,356 INFO L82 PathProgramCache]: Analyzing trace with hash 825370165, now seen corresponding path program 1 times [2020-11-28 07:31:36,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:31:36,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125440036] [2020-11-28 07:31:36,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:31:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:31:36,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 07:31:36,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125440036] [2020-11-28 07:31:36,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:31:36,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:31:36,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067516163] [2020-11-28 07:31:36,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:31:36,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:31:36,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:31:36,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:31:36,419 INFO L87 Difference]: Start difference. First operand 180 states and 246 transitions. Second operand 3 states. [2020-11-28 07:31:36,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:31:36,447 INFO L93 Difference]: Finished difference Result 333 states and 459 transitions. [2020-11-28 07:31:36,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:31:36,451 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-11-28 07:31:36,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:31:36,452 INFO L225 Difference]: With dead ends: 333 [2020-11-28 07:31:36,452 INFO L226 Difference]: Without dead ends: 178 [2020-11-28 07:31:36,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:31:36,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-11-28 07:31:36,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2020-11-28 07:31:36,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-11-28 07:31:36,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 230 transitions. [2020-11-28 07:31:36,470 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 230 transitions. Word has length 32 [2020-11-28 07:31:36,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:31:36,471 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 230 transitions. [2020-11-28 07:31:36,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:31:36,476 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 230 transitions. [2020-11-28 07:31:36,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 07:31:36,478 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:31:36,478 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-28 07:31:36,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:31:36,479 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:31:36,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:31:36,479 INFO L82 PathProgramCache]: Analyzing trace with hash 480544918, now seen corresponding path program 1 times [2020-11-28 07:31:36,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:31:36,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777313228] [2020-11-28 07:31:36,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:31:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:31:36,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:31:36,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777313228] [2020-11-28 07:31:36,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:31:36,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:31:36,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460156340] [2020-11-28 07:31:36,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:31:36,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:31:36,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:31:36,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:31:36,539 INFO L87 Difference]: Start difference. First operand 176 states and 230 transitions. Second operand 4 states. [2020-11-28 07:31:36,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:31:36,563 INFO L93 Difference]: Finished difference Result 196 states and 254 transitions. [2020-11-28 07:31:36,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:31:36,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-11-28 07:31:36,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:31:36,565 INFO L225 Difference]: With dead ends: 196 [2020-11-28 07:31:36,565 INFO L226 Difference]: Without dead ends: 194 [2020-11-28 07:31:36,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:31:36,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-11-28 07:31:36,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 174. [2020-11-28 07:31:36,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-11-28 07:31:36,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 227 transitions. [2020-11-28 07:31:36,597 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 227 transitions. Word has length 32 [2020-11-28 07:31:36,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:31:36,597 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 227 transitions. [2020-11-28 07:31:36,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:31:36,597 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 227 transitions. [2020-11-28 07:31:36,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-28 07:31:36,598 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:31:36,598 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-28 07:31:36,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:31:36,598 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:31:36,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:31:36,599 INFO L82 PathProgramCache]: Analyzing trace with hash 2011977017, now seen corresponding path program 1 times [2020-11-28 07:31:36,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:31:36,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285801661] [2020-11-28 07:31:36,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:31:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:31:36,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:31:36,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285801661] [2020-11-28 07:31:36,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772518217] [2020-11-28 07:31:36,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1e2b2c73-4c8d-4ee2-9fdb-e0f9e371b1cc/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:31:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:31:36,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 07:31:36,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:31:36,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:31:36,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:31:36,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:31:36,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [160366478] [2020-11-28 07:31:36,976 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2020-11-28 07:31:36,976 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:31:36,984 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:31:36,989 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:31:36,989 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:31:37,764 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:31:38,414 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 92 [2020-11-28 07:31:38,746 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2020-11-28 07:31:39,088 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2020-11-28 07:31:39,501 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 86 [2020-11-28 07:31:39,920 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 92 [2020-11-28 07:31:40,253 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 94 [2020-11-28 07:31:41,210 WARN L193 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 104 [2020-11-28 07:31:41,585 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2020-11-28 07:31:41,923 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2020-11-28 07:31:42,281 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2020-11-28 07:31:42,696 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 78 [2020-11-28 07:31:43,163 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 83 [2020-11-28 07:31:43,628 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 85 [2020-11-28 07:31:43,964 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2020-11-28 07:31:44,303 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 73 [2020-11-28 07:31:44,651 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 74 [2020-11-28 07:31:45,046 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 76 [2020-11-28 07:31:45,435 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 78 [2020-11-28 07:31:45,842 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2020-11-28 07:31:46,493 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 84 [2020-11-28 07:31:46,933 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 88 [2020-11-28 07:31:47,408 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 90 [2020-11-28 07:31:47,410 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:31:47,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:31:47,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 6 [2020-11-28 07:31:47,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948977344] [2020-11-28 07:31:47,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:31:47,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:31:47,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:31:47,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=724, Unknown=0, NotChecked=0, Total=812 [2020-11-28 07:31:47,412 INFO L87 Difference]: Start difference. First operand 174 states and 227 transitions. Second operand 7 states. [2020-11-28 07:31:47,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:31:47,504 INFO L93 Difference]: Finished difference Result 431 states and 567 transitions. [2020-11-28 07:31:47,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:31:47,505 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-11-28 07:31:47,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:31:47,508 INFO L225 Difference]: With dead ends: 431 [2020-11-28 07:31:47,508 INFO L226 Difference]: Without dead ends: 429 [2020-11-28 07:31:47,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 67 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=88, Invalid=724, Unknown=0, NotChecked=0, Total=812 [2020-11-28 07:31:47,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-11-28 07:31:47,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 303. [2020-11-28 07:31:47,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-11-28 07:31:47,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 400 transitions. [2020-11-28 07:31:47,528 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 400 transitions. Word has length 33 [2020-11-28 07:31:47,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:31:47,528 INFO L481 AbstractCegarLoop]: Abstraction has 303 states and 400 transitions. [2020-11-28 07:31:47,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:31:47,528 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 400 transitions. [2020-11-28 07:31:47,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-28 07:31:47,529 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:31:47,529 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:31:47,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-11-28 07:31:47,746 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:31:47,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:31:47,747 INFO L82 PathProgramCache]: Analyzing trace with hash -706576025, now seen corresponding path program 2 times [2020-11-28 07:31:47,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:31:47,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970850497] [2020-11-28 07:31:47,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:31:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:31:47,778 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:31:47,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970850497] [2020-11-28 07:31:47,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:31:47,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:31:47,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350038149] [2020-11-28 07:31:47,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:31:47,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:31:47,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:31:47,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:31:47,779 INFO L87 Difference]: Start difference. First operand 303 states and 400 transitions. Second operand 3 states. [2020-11-28 07:31:47,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:31:47,822 INFO L93 Difference]: Finished difference Result 507 states and 675 transitions. [2020-11-28 07:31:47,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:31:47,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-11-28 07:31:47,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:31:47,824 INFO L225 Difference]: With dead ends: 507 [2020-11-28 07:31:47,824 INFO L226 Difference]: Without dead ends: 269 [2020-11-28 07:31:47,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:31:47,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-11-28 07:31:47,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 261. [2020-11-28 07:31:47,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-11-28 07:31:47,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 335 transitions. [2020-11-28 07:31:47,840 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 335 transitions. Word has length 42 [2020-11-28 07:31:47,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:31:47,841 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 335 transitions. [2020-11-28 07:31:47,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:31:47,841 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 335 transitions. [2020-11-28 07:31:47,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-28 07:31:47,842 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:31:47,842 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-28 07:31:47,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-28 07:31:47,842 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:31:47,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:31:47,843 INFO L82 PathProgramCache]: Analyzing trace with hash -681462367, now seen corresponding path program 1 times [2020-11-28 07:31:47,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:31:47,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966872970] [2020-11-28 07:31:47,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:31:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:31:47,888 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 07:31:47,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966872970] [2020-11-28 07:31:47,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:31:47,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:31:47,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525163664] [2020-11-28 07:31:47,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:31:47,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:31:47,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:31:47,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:31:47,890 INFO L87 Difference]: Start difference. First operand 261 states and 335 transitions. Second operand 3 states. [2020-11-28 07:31:47,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:31:47,919 INFO L93 Difference]: Finished difference Result 322 states and 413 transitions. [2020-11-28 07:31:47,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:31:47,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-11-28 07:31:47,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:31:47,920 INFO L225 Difference]: With dead ends: 322 [2020-11-28 07:31:47,920 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:31:47,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:31:47,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:31:47,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:31:47,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:31:47,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:31:47,921 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2020-11-28 07:31:47,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:31:47,921 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:31:47,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:31:47,921 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:31:47,921 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:31:47,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-28 07:31:47,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:31:48,334 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2020-11-28 07:31:48,529 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2020-11-28 07:31:48,812 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2020-11-28 07:31:48,948 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2020-11-28 07:31:49,101 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2020-11-28 07:31:49,104 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 07:31:49,104 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-28 07:31:49,104 INFO L274 CegarLoopResult]: For program point L53(lines 53 62) no Hoare annotation was computed. [2020-11-28 07:31:49,105 INFO L274 CegarLoopResult]: For program point L53-2(lines 53 62) no Hoare annotation was computed. [2020-11-28 07:31:49,105 INFO L274 CegarLoopResult]: For program point L53-3(lines 53 62) no Hoare annotation was computed. [2020-11-28 07:31:49,105 INFO L274 CegarLoopResult]: For program point L53-5(lines 53 62) no Hoare annotation was computed. [2020-11-28 07:31:49,105 INFO L274 CegarLoopResult]: For program point L268(lines 268 275) no Hoare annotation was computed. [2020-11-28 07:31:49,105 INFO L274 CegarLoopResult]: For program point L153(lines 152 187) no Hoare annotation was computed. [2020-11-28 07:31:49,105 INFO L274 CegarLoopResult]: For program point L54(lines 54 59) no Hoare annotation was computed. [2020-11-28 07:31:49,105 INFO L274 CegarLoopResult]: For program point L54-1(lines 54 59) no Hoare annotation was computed. [2020-11-28 07:31:49,105 INFO L274 CegarLoopResult]: For program point L253(lines 253 260) no Hoare annotation was computed. [2020-11-28 07:31:49,105 INFO L274 CegarLoopResult]: For program point L154-1(lines 154 164) no Hoare annotation was computed. [2020-11-28 07:31:49,105 INFO L274 CegarLoopResult]: For program point L322(lines 322 326) no Hoare annotation was computed. [2020-11-28 07:31:49,105 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:31:49,105 INFO L274 CegarLoopResult]: For program point L174(lines 174 186) no Hoare annotation was computed. [2020-11-28 07:31:49,105 INFO L274 CegarLoopResult]: For program point L141(lines 141 149) no Hoare annotation was computed. [2020-11-28 07:31:49,105 INFO L274 CegarLoopResult]: For program point L175(lines 175 181) no Hoare annotation was computed. [2020-11-28 07:31:49,106 INFO L270 CegarLoopResult]: At program point L109-1(lines 97 134) the Hoare annotation is: (let ((.cse7 (= ~q_free~0 0)) (.cse0 (= ~p_dw_pc~0 0)) (.cse1 (= ~p_last_write~0 ~q_buf_0~0)) (.cse2 (<= ~c_num_read~0 0)) (.cse3 (= ~c_last_read~0 ~p_last_write~0)) (.cse4 (= ~p_num_write~0 0)) (.cse5 (= ~q_free~0 1)) (.cse6 (<= 0 ~c_num_read~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ~c_dr_pc~0 0) .cse5 .cse6) (and .cse7 .cse0 (= ~p_num_write~0 1) .cse1 .cse2 .cse6) (let ((.cse8 (+ ~c_num_read~0 1))) (and .cse7 (<= .cse8 ~p_num_write~0) (<= ~p_num_write~0 .cse8) .cse1 (= ~p_dw_pc~0 1))) (and .cse0 (= ~c_dr_st~0 2) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6))) [2020-11-28 07:31:49,106 INFO L274 CegarLoopResult]: For program point L110(lines 109 129) no Hoare annotation was computed. [2020-11-28 07:31:49,106 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-11-28 07:31:49,106 INFO L274 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-11-28 07:31:49,106 INFO L270 CegarLoopResult]: At program point L144(lines 144 148) the Hoare annotation is: (let ((.cse0 (+ ~c_num_read~0 1))) (and (= ~q_free~0 0) (= 2 ~p_dw_st~0) (<= .cse0 ~p_num_write~0) (<= ~p_num_write~0 .cse0) (= ~p_last_write~0 ~q_buf_0~0) (= ~p_dw_pc~0 1))) [2020-11-28 07:31:49,106 INFO L270 CegarLoopResult]: At program point L111(lines 97 134) the Hoare annotation is: (let ((.cse0 (= ~p_last_write~0 ~q_buf_0~0))) (or (and (<= ~p_num_write~0 ~c_num_read~0) .cse0 (= ~p_dw_pc~0 1) (<= ~c_num_read~0 ~p_num_write~0)) (and (= ~p_dw_pc~0 0) .cse0 (<= ~c_num_read~0 0) (= ~p_num_write~0 0) (<= 0 ~c_num_read~0)))) [2020-11-28 07:31:49,107 INFO L270 CegarLoopResult]: At program point L45(lines 33 47) the Hoare annotation is: (let ((.cse0 (= ~q_free~0 0)) (.cse1 (= ~p_last_write~0 ~q_buf_0~0))) (or (and .cse0 (= ~p_dw_pc~0 0) (= ~p_num_write~0 1) .cse1 (<= ~c_num_read~0 0) (<= 0 ~c_num_read~0)) (let ((.cse2 (+ ~c_num_read~0 1))) (and .cse0 (<= .cse2 ~p_num_write~0) (<= ~p_num_write~0 .cse2) .cse1 (= ~p_dw_pc~0 1))))) [2020-11-28 07:31:49,107 INFO L270 CegarLoopResult]: At program point L45-1(lines 33 47) the Hoare annotation is: (and (= 2 ~p_dw_st~0) (<= ~p_num_write~0 ~c_num_read~0) (= ~p_last_write~0 ~q_buf_0~0) (= ~p_dw_pc~0 1) (= ~c_last_read~0 ~p_last_write~0) (= ~q_free~0 1) (<= ~c_num_read~0 ~p_num_write~0)) [2020-11-28 07:31:49,107 INFO L270 CegarLoopResult]: At program point L12-1(lines 140 192) the Hoare annotation is: (let ((.cse1 (= ~c_last_read~0 ~p_last_write~0)) (.cse2 (= ~q_free~0 1)) (.cse0 (= ~p_last_write~0 ~q_buf_0~0)) (.cse3 (= ~p_dw_pc~0 1))) (or (and (= ~p_dw_pc~0 0) (= ~p_dw_st~0 0) .cse0 (<= ~c_num_read~0 0) .cse1 (= ~p_num_write~0 0) .cse2 (<= 0 ~c_num_read~0)) (and (<= ~p_num_write~0 ~c_num_read~0) .cse0 .cse3 .cse1 .cse2 (<= ~c_num_read~0 ~p_num_write~0)) (let ((.cse4 (+ ~c_num_read~0 1))) (and (= ~q_free~0 0) (= 2 ~p_dw_st~0) (<= .cse4 ~p_num_write~0) (<= ~p_num_write~0 .cse4) .cse0 .cse3)))) [2020-11-28 07:31:49,107 INFO L274 CegarLoopResult]: For program point L244(lines 244 248) no Hoare annotation was computed. [2020-11-28 07:31:49,107 INFO L274 CegarLoopResult]: For program point L244-1(lines 239 279) no Hoare annotation was computed. [2020-11-28 07:31:49,107 INFO L277 CegarLoopResult]: At program point L328(lines 305 333) the Hoare annotation is: true [2020-11-28 07:31:49,107 INFO L270 CegarLoopResult]: At program point L64(lines 52 66) the Hoare annotation is: (let ((.cse0 (= ~q_free~0 0)) (.cse1 (= ~p_last_write~0 ~q_buf_0~0))) (or (and .cse0 (= ~p_dw_pc~0 0) (= ~p_num_write~0 1) .cse1 (<= ~c_num_read~0 0) (<= 0 ~c_num_read~0)) (let ((.cse2 (+ ~c_num_read~0 1))) (and .cse0 (<= .cse2 ~p_num_write~0) (<= ~p_num_write~0 .cse2) .cse1 (= ~p_dw_pc~0 1))))) [2020-11-28 07:31:49,107 INFO L270 CegarLoopResult]: At program point L64-1(lines 52 66) the Hoare annotation is: (and (<= ~p_num_write~0 ~c_num_read~0) (= ~p_last_write~0 ~q_buf_0~0) (= ~p_dw_pc~0 1) (= ~c_last_read~0 ~p_last_write~0) (= ~q_free~0 1) (<= ~c_num_read~0 ~p_num_write~0)) [2020-11-28 07:31:49,108 INFO L274 CegarLoopResult]: For program point L98(lines 98 106) no Hoare annotation was computed. [2020-11-28 07:31:49,108 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 07:31:49,108 INFO L270 CegarLoopResult]: At program point L280(lines 232 285) the Hoare annotation is: (let ((.cse2 (= ~p_dw_pc~0 1)) (.cse3 (= ~c_dr_st~0 2)) (.cse5 (= ~p_dw_pc~0 0)) (.cse6 (= ~p_dw_st~0 0)) (.cse1 (= ~p_last_write~0 ~q_buf_0~0)) (.cse7 (<= ~c_num_read~0 0)) (.cse8 (= ~c_last_read~0 ~p_last_write~0)) (.cse9 (= ~p_num_write~0 0)) (.cse4 (= ~q_free~0 1)) (.cse10 (<= 0 ~c_num_read~0))) (or (let ((.cse0 (+ ~c_num_read~0 1))) (and (= ~q_free~0 0) (= 2 ~p_dw_st~0) (<= .cse0 ~p_num_write~0) (<= ~p_num_write~0 .cse0) .cse1 .cse2)) (and .cse3 (<= ~p_num_write~0 ~c_num_read~0) .cse1 .cse2 .cse4 (<= ~c_num_read~0 ~p_num_write~0)) (and .cse5 .cse3 .cse6 .cse1 .cse7 .cse8 .cse9 .cse4 .cse10) (and .cse5 .cse6 .cse1 .cse7 .cse8 .cse9 (= ~c_dr_pc~0 0) .cse4 .cse10))) [2020-11-28 07:31:49,108 INFO L270 CegarLoopResult]: At program point L264(lines 239 279) the Hoare annotation is: (let ((.cse2 (= ~p_dw_pc~0 1)) (.cse3 (= ~c_dr_st~0 2)) (.cse5 (= ~p_dw_pc~0 0)) (.cse6 (= ~p_dw_st~0 0)) (.cse1 (= ~p_last_write~0 ~q_buf_0~0)) (.cse7 (<= ~c_num_read~0 0)) (.cse8 (= ~c_last_read~0 ~p_last_write~0)) (.cse9 (= ~p_num_write~0 0)) (.cse4 (= ~q_free~0 1)) (.cse10 (<= 0 ~c_num_read~0))) (or (let ((.cse0 (+ ~c_num_read~0 1))) (and (= ~q_free~0 0) (= 2 ~p_dw_st~0) (<= .cse0 ~p_num_write~0) (<= ~p_num_write~0 .cse0) .cse1 .cse2)) (and .cse3 (<= ~p_num_write~0 ~c_num_read~0) .cse1 .cse2 .cse4 (<= ~c_num_read~0 ~p_num_write~0)) (and .cse5 .cse3 .cse6 .cse1 .cse7 .cse8 .cse9 .cse4 .cse10) (and .cse5 .cse6 .cse1 .cse7 .cse8 .cse9 (= ~c_dr_pc~0 0) .cse4 .cse10))) [2020-11-28 07:31:49,108 INFO L274 CegarLoopResult]: For program point L34(lines 34 43) no Hoare annotation was computed. [2020-11-28 07:31:49,108 INFO L274 CegarLoopResult]: For program point L34-2(lines 34 43) no Hoare annotation was computed. [2020-11-28 07:31:49,108 INFO L274 CegarLoopResult]: For program point L34-3(lines 34 43) no Hoare annotation was computed. [2020-11-28 07:31:49,108 INFO L274 CegarLoopResult]: For program point L34-5(lines 34 43) no Hoare annotation was computed. [2020-11-28 07:31:49,108 INFO L270 CegarLoopResult]: At program point L315-1(lines 194 327) the Hoare annotation is: (let ((.cse2 (= ~p_dw_pc~0 1)) (.cse3 (= ~c_dr_st~0 2)) (.cse5 (= ~p_dw_pc~0 0)) (.cse6 (= ~p_dw_st~0 0)) (.cse1 (= ~p_last_write~0 ~q_buf_0~0)) (.cse7 (<= ~c_num_read~0 0)) (.cse8 (= ~c_last_read~0 ~p_last_write~0)) (.cse9 (= ~p_num_write~0 0)) (.cse4 (= ~q_free~0 1)) (.cse10 (<= 0 ~c_num_read~0))) (or (let ((.cse0 (+ ~c_num_read~0 1))) (and (= ~q_free~0 0) (= 2 ~p_dw_st~0) (<= .cse0 ~p_num_write~0) (<= ~p_num_write~0 .cse0) .cse1 .cse2)) (and .cse3 (<= ~p_num_write~0 ~c_num_read~0) .cse1 .cse2 .cse4 (<= ~c_num_read~0 ~p_num_write~0)) (and .cse5 .cse3 .cse6 .cse1 .cse7 .cse8 .cse9 .cse4 .cse10) (and .cse5 .cse6 .cse1 .cse7 .cse8 .cse9 (= ~c_dr_pc~0 0) .cse4 .cse10))) [2020-11-28 07:31:49,109 INFO L270 CegarLoopResult]: At program point L249(lines 239 279) the Hoare annotation is: (let ((.cse2 (= ~p_dw_pc~0 1)) (.cse3 (= ~c_dr_st~0 2)) (.cse5 (= ~p_dw_pc~0 0)) (.cse6 (= ~p_dw_st~0 0)) (.cse1 (= ~p_last_write~0 ~q_buf_0~0)) (.cse7 (<= ~c_num_read~0 0)) (.cse8 (= ~c_last_read~0 ~p_last_write~0)) (.cse9 (= ~p_num_write~0 0)) (.cse4 (= ~q_free~0 1)) (.cse10 (<= 0 ~c_num_read~0))) (or (let ((.cse0 (+ ~c_num_read~0 1))) (and (= ~q_free~0 0) (= 2 ~p_dw_st~0) (<= .cse0 ~p_num_write~0) (<= ~p_num_write~0 .cse0) .cse1 .cse2)) (and .cse3 (<= ~p_num_write~0 ~c_num_read~0) .cse1 .cse2 .cse4 (<= ~c_num_read~0 ~p_num_write~0)) (and .cse5 .cse3 .cse6 .cse1 .cse7 .cse8 .cse9 .cse4 .cse10) (and .cse5 .cse6 .cse1 .cse7 .cse8 .cse9 (= ~c_dr_pc~0 0) .cse4 .cse10))) [2020-11-28 07:31:49,109 INFO L274 CegarLoopResult]: For program point L101(lines 101 105) no Hoare annotation was computed. [2020-11-28 07:31:49,109 INFO L274 CegarLoopResult]: For program point L35(lines 35 40) no Hoare annotation was computed. [2020-11-28 07:31:49,109 INFO L274 CegarLoopResult]: For program point L35-1(lines 35 40) no Hoare annotation was computed. [2020-11-28 07:31:49,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:31:49 BoogieIcfgContainer [2020-11-28 07:31:49,139 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:31:49,140 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:31:49,140 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:31:49,140 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:31:49,140 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:31:35" (3/4) ... [2020-11-28 07:31:49,143 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:31:49,159 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2020-11-28 07:31:49,160 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 07:31:49,161 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:31:49,161 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:31:49,261 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1e2b2c73-4c8d-4ee2-9fdb-e0f9e371b1cc/bin/utaipan/witness.graphml [2020-11-28 07:31:49,261 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:31:49,264 INFO L168 Benchmark]: Toolchain (without parser) took 15525.83 ms. Allocated memory was 104.9 MB in the beginning and 287.3 MB in the end (delta: 182.5 MB). Free memory was 70.9 MB in the beginning and 225.5 MB in the end (delta: -154.6 MB). Peak memory consumption was 26.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:31:49,264 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 104.9 MB. Free memory was 77.8 MB in the beginning and 77.8 MB in the end (delta: 27.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:31:49,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.29 ms. Allocated memory is still 104.9 MB. Free memory was 70.7 MB in the beginning and 80.0 MB in the end (delta: -9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:31:49,265 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.52 ms. Allocated memory is still 104.9 MB. Free memory was 80.0 MB in the beginning and 77.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:31:49,265 INFO L168 Benchmark]: Boogie Preprocessor took 30.04 ms. Allocated memory is still 104.9 MB. Free memory was 77.9 MB in the beginning and 76.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:31:49,266 INFO L168 Benchmark]: RCFGBuilder took 1007.00 ms. Allocated memory is still 104.9 MB. Free memory was 76.4 MB in the beginning and 73.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:31:49,266 INFO L168 Benchmark]: TraceAbstraction took 13965.44 ms. Allocated memory was 104.9 MB in the beginning and 287.3 MB in the end (delta: 182.5 MB). Free memory was 73.2 MB in the beginning and 231.8 MB in the end (delta: -158.6 MB). Peak memory consumption was 167.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:31:49,267 INFO L168 Benchmark]: Witness Printer took 121.40 ms. Allocated memory is still 287.3 MB. Free memory was 231.8 MB in the beginning and 225.5 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:31:49,272 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 104.9 MB. Free memory was 77.8 MB in the beginning and 77.8 MB in the end (delta: 27.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 342.29 ms. Allocated memory is still 104.9 MB. Free memory was 70.7 MB in the beginning and 80.0 MB in the end (delta: -9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.52 ms. Allocated memory is still 104.9 MB. Free memory was 80.0 MB in the beginning and 77.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.04 ms. Allocated memory is still 104.9 MB. Free memory was 77.9 MB in the beginning and 76.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1007.00 ms. Allocated memory is still 104.9 MB. Free memory was 76.4 MB in the beginning and 73.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13965.44 ms. Allocated memory was 104.9 MB in the beginning and 287.3 MB in the end (delta: 182.5 MB). Free memory was 73.2 MB in the beginning and 231.8 MB in the end (delta: -158.6 MB). Peak memory consumption was 167.8 MB. Max. memory is 16.1 GB. * Witness Printer took 121.40 ms. Allocated memory is still 287.3 MB. Free memory was 231.8 MB in the beginning and 225.5 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 97]: Loop Invariant Derived loop invariant: (((p_num_write <= c_num_read && p_last_write == q_buf_0) && p_dw_pc == 1) && c_num_read <= p_num_write) || ((((p_dw_pc == 0 && p_last_write == q_buf_0) && c_num_read <= 0) && p_num_write == 0) && 0 <= c_num_read) - InvariantResult [Line: 144]: Loop Invariant Derived loop invariant: ((((q_free == 0 && 2 == p_dw_st) && c_num_read + 1 <= p_num_write) && p_num_write <= c_num_read + 1) && p_last_write == q_buf_0) && p_dw_pc == 1 - InvariantResult [Line: 239]: Loop Invariant Derived loop invariant: (((((((q_free == 0 && 2 == p_dw_st) && c_num_read + 1 <= p_num_write) && p_num_write <= c_num_read + 1) && p_last_write == q_buf_0) && p_dw_pc == 1) || (((((c_dr_st == 2 && p_num_write <= c_num_read) && p_last_write == q_buf_0) && p_dw_pc == 1) && q_free == 1) && c_num_read <= p_num_write)) || ((((((((p_dw_pc == 0 && c_dr_st == 2) && p_dw_st == 0) && p_last_write == q_buf_0) && c_num_read <= 0) && c_last_read == p_last_write) && p_num_write == 0) && q_free == 1) && 0 <= c_num_read)) || ((((((((p_dw_pc == 0 && p_dw_st == 0) && p_last_write == q_buf_0) && c_num_read <= 0) && c_last_read == p_last_write) && p_num_write == 0) && c_dr_pc == 0) && q_free == 1) && 0 <= c_num_read) - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: ((((p_num_write <= c_num_read && p_last_write == q_buf_0) && p_dw_pc == 1) && c_last_read == p_last_write) && q_free == 1) && c_num_read <= p_num_write - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((((q_free == 0 && p_dw_pc == 0) && p_num_write == 1) && p_last_write == q_buf_0) && c_num_read <= 0) && 0 <= c_num_read) || ((((q_free == 0 && c_num_read + 1 <= p_num_write) && p_num_write <= c_num_read + 1) && p_last_write == q_buf_0) && p_dw_pc == 1) - InvariantResult [Line: 305]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 140]: Loop Invariant Derived loop invariant: ((((((((p_dw_pc == 0 && p_dw_st == 0) && p_last_write == q_buf_0) && c_num_read <= 0) && c_last_read == p_last_write) && p_num_write == 0) && q_free == 1) && 0 <= c_num_read) || (((((p_num_write <= c_num_read && p_last_write == q_buf_0) && p_dw_pc == 1) && c_last_read == p_last_write) && q_free == 1) && c_num_read <= p_num_write)) || (((((q_free == 0 && 2 == p_dw_st) && c_num_read + 1 <= p_num_write) && p_num_write <= c_num_read + 1) && p_last_write == q_buf_0) && p_dw_pc == 1) - InvariantResult [Line: 97]: Loop Invariant Derived loop invariant: (((((((((p_dw_pc == 0 && p_last_write == q_buf_0) && c_num_read <= 0) && c_last_read == p_last_write) && p_num_write == 0) && c_dr_pc == 0) && q_free == 1) && 0 <= c_num_read) || (((((q_free == 0 && p_dw_pc == 0) && p_num_write == 1) && p_last_write == q_buf_0) && c_num_read <= 0) && 0 <= c_num_read)) || ((((q_free == 0 && c_num_read + 1 <= p_num_write) && p_num_write <= c_num_read + 1) && p_last_write == q_buf_0) && p_dw_pc == 1)) || (((((((p_dw_pc == 0 && c_dr_st == 2) && p_last_write == q_buf_0) && c_num_read <= 0) && c_last_read == p_last_write) && p_num_write == 0) && q_free == 1) && 0 <= c_num_read) - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (((((2 == p_dw_st && p_num_write <= c_num_read) && p_last_write == q_buf_0) && p_dw_pc == 1) && c_last_read == p_last_write) && q_free == 1) && c_num_read <= p_num_write - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (((((q_free == 0 && p_dw_pc == 0) && p_num_write == 1) && p_last_write == q_buf_0) && c_num_read <= 0) && 0 <= c_num_read) || ((((q_free == 0 && c_num_read + 1 <= p_num_write) && p_num_write <= c_num_read + 1) && p_last_write == q_buf_0) && p_dw_pc == 1) - InvariantResult [Line: 232]: Loop Invariant Derived loop invariant: (((((((q_free == 0 && 2 == p_dw_st) && c_num_read + 1 <= p_num_write) && p_num_write <= c_num_read + 1) && p_last_write == q_buf_0) && p_dw_pc == 1) || (((((c_dr_st == 2 && p_num_write <= c_num_read) && p_last_write == q_buf_0) && p_dw_pc == 1) && q_free == 1) && c_num_read <= p_num_write)) || ((((((((p_dw_pc == 0 && c_dr_st == 2) && p_dw_st == 0) && p_last_write == q_buf_0) && c_num_read <= 0) && c_last_read == p_last_write) && p_num_write == 0) && q_free == 1) && 0 <= c_num_read)) || ((((((((p_dw_pc == 0 && p_dw_st == 0) && p_last_write == q_buf_0) && c_num_read <= 0) && c_last_read == p_last_write) && p_num_write == 0) && c_dr_pc == 0) && q_free == 1) && 0 <= c_num_read) - InvariantResult [Line: 239]: Loop Invariant Derived loop invariant: (((((((q_free == 0 && 2 == p_dw_st) && c_num_read + 1 <= p_num_write) && p_num_write <= c_num_read + 1) && p_last_write == q_buf_0) && p_dw_pc == 1) || (((((c_dr_st == 2 && p_num_write <= c_num_read) && p_last_write == q_buf_0) && p_dw_pc == 1) && q_free == 1) && c_num_read <= p_num_write)) || ((((((((p_dw_pc == 0 && c_dr_st == 2) && p_dw_st == 0) && p_last_write == q_buf_0) && c_num_read <= 0) && c_last_read == p_last_write) && p_num_write == 0) && q_free == 1) && 0 <= c_num_read)) || ((((((((p_dw_pc == 0 && p_dw_st == 0) && p_last_write == q_buf_0) && c_num_read <= 0) && c_last_read == p_last_write) && p_num_write == 0) && c_dr_pc == 0) && q_free == 1) && 0 <= c_num_read) - InvariantResult [Line: 194]: Loop Invariant Derived loop invariant: (((((((q_free == 0 && 2 == p_dw_st) && c_num_read + 1 <= p_num_write) && p_num_write <= c_num_read + 1) && p_last_write == q_buf_0) && p_dw_pc == 1) || (((((c_dr_st == 2 && p_num_write <= c_num_read) && p_last_write == q_buf_0) && p_dw_pc == 1) && q_free == 1) && c_num_read <= p_num_write)) || ((((((((p_dw_pc == 0 && c_dr_st == 2) && p_dw_st == 0) && p_last_write == q_buf_0) && c_num_read <= 0) && c_last_read == p_last_write) && p_num_write == 0) && q_free == 1) && 0 <= c_num_read)) || ((((((((p_dw_pc == 0 && p_dw_st == 0) && p_last_write == q_buf_0) && c_num_read <= 0) && c_last_read == p_last_write) && p_num_write == 0) && c_dr_pc == 0) && q_free == 1) && 0 <= c_num_read) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.6s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 686 SDtfs, 462 SDslu, 695 SDs, 0 SdLazy, 110 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 82 SyntacticMatches, 7 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 9.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=303occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 189 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 14 PreInvPairs, 59 NumberOfFragments, 730 HoareAnnotationTreeSize, 14 FomulaSimplifications, 708 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 469 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 337 NumberOfCodeBlocks, 337 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 358 ConstructedInterpolants, 0 QuantifiedInterpolants, 41072 SizeOfPredicates, 2 NumberOfNonLiveVariables, 177 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 42/48 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...