./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e1815359-1b9c-4a32-bcc7-63dbbf0b4a5c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e1815359-1b9c-4a32-bcc7-63dbbf0b4a5c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e1815359-1b9c-4a32-bcc7-63dbbf0b4a5c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e1815359-1b9c-4a32-bcc7-63dbbf0b4a5c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e1815359-1b9c-4a32-bcc7-63dbbf0b4a5c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e1815359-1b9c-4a32-bcc7-63dbbf0b4a5c/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 93bb43afb01d6e3a62dc39071b7659c8b1c085d1 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-03 12:36:42,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:36:42,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:36:42,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:36:42,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:36:42,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:36:42,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:36:42,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:36:42,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:36:42,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:36:42,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:36:42,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:36:42,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:36:42,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:36:42,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:36:42,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:36:42,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:36:42,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:36:42,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:36:42,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:36:42,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:36:42,497 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:36:42,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:36:42,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:36:42,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:36:42,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:36:42,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:36:42,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:36:42,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:36:42,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:36:42,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:36:42,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:36:42,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:36:42,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:36:42,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:36:42,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:36:42,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:36:42,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:36:42,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:36:42,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:36:42,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:36:42,524 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e1815359-1b9c-4a32-bcc7-63dbbf0b4a5c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-03 12:36:42,573 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:36:42,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:36:42,575 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:36:42,575 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:36:42,575 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:36:42,575 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:36:42,576 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:36:42,576 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:36:42,576 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:36:42,576 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:36:42,577 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:36:42,578 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:36:42,578 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:36:42,578 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:36:42,578 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:36:42,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:36:42,579 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:36:42,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:36:42,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:36:42,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:36:42,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:36:42,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:36:42,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:36:42,581 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 12:36:42,581 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:36:42,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:36:42,582 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:36:42,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:36:42,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:36:42,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:36:42,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:36:42,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:36:42,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:36:42,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:36:42,584 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:36:42,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:36:42,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:36:42,584 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:36:42,585 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:36:42,585 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_e1815359-1b9c-4a32-bcc7-63dbbf0b4a5c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e1815359-1b9c-4a32-bcc7-63dbbf0b4a5c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93bb43afb01d6e3a62dc39071b7659c8b1c085d1 [2020-12-03 12:36:42,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:36:42,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:36:42,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:36:42,936 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:36:42,937 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:36:42,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e1815359-1b9c-4a32-bcc7-63dbbf0b4a5c/bin/utaipan/../../sv-benchmarks/c/loop-invgen/apache-escape-absolute.i [2020-12-03 12:36:43,012 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e1815359-1b9c-4a32-bcc7-63dbbf0b4a5c/bin/utaipan/data/00c530339/b9fa3e29331042cea8c695a810f3728a/FLAGdeb5676fb [2020-12-03 12:36:43,556 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:36:43,557 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e1815359-1b9c-4a32-bcc7-63dbbf0b4a5c/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i [2020-12-03 12:36:43,567 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e1815359-1b9c-4a32-bcc7-63dbbf0b4a5c/bin/utaipan/data/00c530339/b9fa3e29331042cea8c695a810f3728a/FLAGdeb5676fb [2020-12-03 12:36:43,926 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e1815359-1b9c-4a32-bcc7-63dbbf0b4a5c/bin/utaipan/data/00c530339/b9fa3e29331042cea8c695a810f3728a [2020-12-03 12:36:43,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:36:43,931 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:36:43,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:36:43,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:36:43,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:36:43,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:36:43" (1/1) ... [2020-12-03 12:36:43,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c2668fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:43, skipping insertion in model container [2020-12-03 12:36:43,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:36:43" (1/1) ... [2020-12-03 12:36:43,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:36:43,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:36:44,183 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e1815359-1b9c-4a32-bcc7-63dbbf0b4a5c/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i[893,906] [2020-12-03 12:36:44,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:36:44,214 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:36:44,228 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e1815359-1b9c-4a32-bcc7-63dbbf0b4a5c/sv-benchmarks/c/loop-invgen/apache-escape-absolute.i[893,906] [2020-12-03 12:36:44,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:36:44,264 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:36:44,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:44 WrapperNode [2020-12-03 12:36:44,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:36:44,266 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:36:44,267 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:36:44,267 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:36:44,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:44" (1/1) ... [2020-12-03 12:36:44,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:44" (1/1) ... [2020-12-03 12:36:44,326 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:36:44,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:36:44,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:36:44,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:36:44,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:44" (1/1) ... [2020-12-03 12:36:44,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:44" (1/1) ... [2020-12-03 12:36:44,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:44" (1/1) ... [2020-12-03 12:36:44,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:44" (1/1) ... [2020-12-03 12:36:44,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:44" (1/1) ... [2020-12-03 12:36:44,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:44" (1/1) ... [2020-12-03 12:36:44,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:44" (1/1) ... [2020-12-03 12:36:44,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:36:44,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:36:44,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:36:44,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:36:44,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1815359-1b9c-4a32-bcc7-63dbbf0b4a5c/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:36:44,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-03 12:36:44,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:36:44,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:36:44,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:36:45,074 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:36:45,077 INFO L299 CfgBuilder]: Removed 42 assume(true) statements. [2020-12-03 12:36:45,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:36:45 BoogieIcfgContainer [2020-12-03 12:36:45,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:36:45,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:36:45,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:36:45,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:36:45,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:36:43" (1/3) ... [2020-12-03 12:36:45,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae1fd00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:36:45, skipping insertion in model container [2020-12-03 12:36:45,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:36:44" (2/3) ... [2020-12-03 12:36:45,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae1fd00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:36:45, skipping insertion in model container [2020-12-03 12:36:45,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:36:45" (3/3) ... [2020-12-03 12:36:45,093 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i [2020-12-03 12:36:45,108 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:36:45,112 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 18 error locations. [2020-12-03 12:36:45,124 INFO L253 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2020-12-03 12:36:45,206 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:36:45,207 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:36:45,207 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:36:45,208 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:36:45,208 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:36:45,208 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:36:45,208 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:36:45,208 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:36:45,245 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-12-03 12:36:45,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-03 12:36:45,252 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:45,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:45,254 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:45,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:45,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1658517419, now seen corresponding path program 1 times [2020-12-03 12:36:45,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:45,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546777117] [2020-12-03 12:36:45,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:45,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:45,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546777117] [2020-12-03 12:36:45,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:45,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-03 12:36:45,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547610951] [2020-12-03 12:36:45,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:36:45,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:36:45,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:36:45,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:36:45,541 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 3 states. [2020-12-03 12:36:45,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:45,719 INFO L93 Difference]: Finished difference Result 168 states and 223 transitions. [2020-12-03 12:36:45,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:36:45,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-03 12:36:45,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:45,741 INFO L225 Difference]: With dead ends: 168 [2020-12-03 12:36:45,743 INFO L226 Difference]: Without dead ends: 83 [2020-12-03 12:36:45,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:36:45,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-03 12:36:45,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-12-03 12:36:45,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-03 12:36:45,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2020-12-03 12:36:45,804 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 10 [2020-12-03 12:36:45,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:45,804 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2020-12-03 12:36:45,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:36:45,805 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2020-12-03 12:36:45,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-03 12:36:45,806 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:45,806 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:45,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:36:45,806 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:45,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:45,810 INFO L82 PathProgramCache]: Analyzing trace with hash -402216392, now seen corresponding path program 1 times [2020-12-03 12:36:45,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:45,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383629161] [2020-12-03 12:36:45,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:45,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:45,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383629161] [2020-12-03 12:36:45,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:45,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 12:36:45,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375081636] [2020-12-03 12:36:45,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:36:45,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:36:45,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:36:45,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:36:45,917 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand 5 states. [2020-12-03 12:36:46,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:46,135 INFO L93 Difference]: Finished difference Result 83 states and 86 transitions. [2020-12-03 12:36:46,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:36:46,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-03 12:36:46,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:46,138 INFO L225 Difference]: With dead ends: 83 [2020-12-03 12:36:46,139 INFO L226 Difference]: Without dead ends: 67 [2020-12-03 12:36:46,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-03 12:36:46,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-03 12:36:46,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-12-03 12:36:46,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-03 12:36:46,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2020-12-03 12:36:46,164 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 12 [2020-12-03 12:36:46,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:46,164 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2020-12-03 12:36:46,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:36:46,164 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2020-12-03 12:36:46,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-03 12:36:46,165 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:46,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:46,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-03 12:36:46,165 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:46,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:46,166 INFO L82 PathProgramCache]: Analyzing trace with hash 535082762, now seen corresponding path program 1 times [2020-12-03 12:36:46,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:46,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849012024] [2020-12-03 12:36:46,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:46,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:46,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849012024] [2020-12-03 12:36:46,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:46,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:36:46,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418142520] [2020-12-03 12:36:46,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:36:46,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:36:46,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:36:46,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:36:46,253 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand 4 states. [2020-12-03 12:36:46,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:46,404 INFO L93 Difference]: Finished difference Result 88 states and 93 transitions. [2020-12-03 12:36:46,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:36:46,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-03 12:36:46,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:46,406 INFO L225 Difference]: With dead ends: 88 [2020-12-03 12:36:46,406 INFO L226 Difference]: Without dead ends: 80 [2020-12-03 12:36:46,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:36:46,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-03 12:36:46,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 74. [2020-12-03 12:36:46,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-03 12:36:46,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2020-12-03 12:36:46,426 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 15 [2020-12-03 12:36:46,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:46,426 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2020-12-03 12:36:46,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:36:46,427 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2020-12-03 12:36:46,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-03 12:36:46,428 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:46,428 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:46,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-03 12:36:46,429 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:46,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:46,429 INFO L82 PathProgramCache]: Analyzing trace with hash -330656293, now seen corresponding path program 1 times [2020-12-03 12:36:46,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:46,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146568253] [2020-12-03 12:36:46,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:46,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-03 12:36:46,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146568253] [2020-12-03 12:36:46,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110238615] [2020-12-03 12:36:46,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e1815359-1b9c-4a32-bcc7-63dbbf0b4a5c/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 12:36:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:46,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-03 12:36:46,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:36:46,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:46,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:36:46,845 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-03 12:36:46,846 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-03 12:36:46,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:46,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [515155741] [2020-12-03 12:36:46,933 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2020-12-03 12:36:46,933 INFO L166 IcfgInterpreter]: Building call graph [2020-12-03 12:36:46,938 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-03 12:36:46,943 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-03 12:36:46,944 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-03 12:36:47,528 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-03 12:36:47,739 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 41 [2020-12-03 12:36:48,031 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-12-03 12:36:48,182 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2020-12-03 12:36:48,342 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2020-12-03 12:36:48,571 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2020-12-03 12:36:48,760 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 50 [2020-12-03 12:36:48,950 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2020-12-03 12:36:49,166 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2020-12-03 12:36:49,629 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2020-12-03 12:36:50,106 WARN L197 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 65 [2020-12-03 12:36:50,499 WARN L197 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 74 [2020-12-03 12:36:50,816 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2020-12-03 12:36:50,992 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 12:36:50,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-03 12:36:50,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 14 [2020-12-03 12:36:50,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692945956] [2020-12-03 12:36:50,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-03 12:36:50,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:36:50,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-03 12:36:50,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2020-12-03 12:36:50,995 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand 14 states. [2020-12-03 12:36:51,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:51,305 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2020-12-03 12:36:51,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-03 12:36:51,305 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2020-12-03 12:36:51,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:51,306 INFO L225 Difference]: With dead ends: 80 [2020-12-03 12:36:51,306 INFO L226 Difference]: Without dead ends: 68 [2020-12-03 12:36:51,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 47 SyntacticMatches, 9 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=232, Invalid=890, Unknown=0, NotChecked=0, Total=1122 [2020-12-03 12:36:51,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-03 12:36:51,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 53. [2020-12-03 12:36:51,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-03 12:36:51,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2020-12-03 12:36:51,315 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 26 [2020-12-03 12:36:51,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:51,315 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2020-12-03 12:36:51,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-03 12:36:51,315 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2020-12-03 12:36:51,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-03 12:36:51,316 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:51,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:51,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2020-12-03 12:36:51,530 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:51,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:51,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1619167883, now seen corresponding path program 1 times [2020-12-03 12:36:51,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:51,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727024079] [2020-12-03 12:36:51,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:51,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:51,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727024079] [2020-12-03 12:36:51,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:51,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-03 12:36:51,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885970492] [2020-12-03 12:36:51,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:36:51,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:36:51,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:36:51,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:36:51,581 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 3 states. [2020-12-03 12:36:51,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:51,626 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2020-12-03 12:36:51,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:36:51,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-12-03 12:36:51,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:51,627 INFO L225 Difference]: With dead ends: 84 [2020-12-03 12:36:51,627 INFO L226 Difference]: Without dead ends: 53 [2020-12-03 12:36:51,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:36:51,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-03 12:36:51,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-12-03 12:36:51,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-03 12:36:51,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-12-03 12:36:51,635 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 38 [2020-12-03 12:36:51,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:51,635 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-12-03 12:36:51,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:36:51,635 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-12-03 12:36:51,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-03 12:36:51,636 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:51,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:51,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-03 12:36:51,637 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:51,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:51,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1232227253, now seen corresponding path program 1 times [2020-12-03 12:36:51,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:51,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810809395] [2020-12-03 12:36:51,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:51,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:51,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810809395] [2020-12-03 12:36:51,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:51,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 12:36:51,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301652793] [2020-12-03 12:36:51,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:36:51,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:36:51,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:36:51,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:36:51,709 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 4 states. [2020-12-03 12:36:51,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:51,775 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2020-12-03 12:36:51,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:36:51,776 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-12-03 12:36:51,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:51,778 INFO L225 Difference]: With dead ends: 55 [2020-12-03 12:36:51,779 INFO L226 Difference]: Without dead ends: 53 [2020-12-03 12:36:51,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:36:51,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-03 12:36:51,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2020-12-03 12:36:51,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-03 12:36:51,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-12-03 12:36:51,802 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 39 [2020-12-03 12:36:51,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:51,804 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-12-03 12:36:51,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:36:51,804 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-12-03 12:36:51,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-03 12:36:51,806 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:36:51,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:36:51,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-03 12:36:51,807 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:36:51,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:36:51,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1240746286, now seen corresponding path program 1 times [2020-12-03 12:36:51,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:36:51,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574402335] [2020-12-03 12:36:51,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:36:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:36:51,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:36:51,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574402335] [2020-12-03 12:36:51,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:36:51,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 12:36:51,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035190894] [2020-12-03 12:36:51,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 12:36:51,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:36:51,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 12:36:51,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 12:36:51,900 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 5 states. [2020-12-03 12:36:51,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:36:51,984 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-12-03 12:36:51,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-03 12:36:51,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-12-03 12:36:51,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:36:51,985 INFO L225 Difference]: With dead ends: 58 [2020-12-03 12:36:51,986 INFO L226 Difference]: Without dead ends: 0 [2020-12-03 12:36:51,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-03 12:36:51,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-03 12:36:51,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-03 12:36:51,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-03 12:36:51,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-03 12:36:51,987 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2020-12-03 12:36:51,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:36:51,987 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-03 12:36:51,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 12:36:51,987 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-03 12:36:51,988 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-03 12:36:51,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-03 12:36:51,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-03 12:36:52,696 INFO L258 CegarLoopResult]: At program point L18-17(lines 17 22) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~cp~0 1))) (and (<= 1 ULTIMATE.start_main_~cp~0) (<= .cse0 ULTIMATE.start_main_~urilen~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (not (= .cse0 ULTIMATE.start_main_~urilen~0)) (<= 0 ULTIMATE.start_main_~scheme~0))) [2020-12-03 12:36:52,696 INFO L262 CegarLoopResult]: For program point L18-18(lines 18 20) no Hoare annotation was computed. [2020-12-03 12:36:52,697 INFO L258 CegarLoopResult]: At program point L18-20(lines 17 22) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~cp~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~scheme~0) (< ULTIMATE.start_main_~cp~0 ULTIMATE.start_main_~urilen~0)) [2020-12-03 12:36:52,697 INFO L262 CegarLoopResult]: For program point L18-21(lines 18 20) no Hoare annotation was computed. [2020-12-03 12:36:52,697 INFO L258 CegarLoopResult]: At program point L18-23(line 55) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~cp~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~scheme~0) (< ULTIMATE.start_main_~cp~0 ULTIMATE.start_main_~urilen~0)) [2020-12-03 12:36:52,697 INFO L262 CegarLoopResult]: For program point L18-24(lines 18 20) no Hoare annotation was computed. [2020-12-03 12:36:52,697 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,697 INFO L258 CegarLoopResult]: At program point L18-26(lines 17 22) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~cp~0 1))) (and (<= 1 ULTIMATE.start_main_~cp~0) (<= .cse0 ULTIMATE.start_main_~urilen~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (not (= .cse0 ULTIMATE.start_main_~urilen~0)) (<= 0 ULTIMATE.start_main_~scheme~0))) [2020-12-03 12:36:52,697 INFO L262 CegarLoopResult]: For program point L18-27(lines 18 20) no Hoare annotation was computed. [2020-12-03 12:36:52,698 INFO L258 CegarLoopResult]: At program point L18-29(line 58) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~cp~0 1))) (and (<= 1 ULTIMATE.start_main_~cp~0) (<= .cse0 ULTIMATE.start_main_~urilen~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (not (= .cse0 ULTIMATE.start_main_~urilen~0)) (<= 0 ULTIMATE.start_main_~scheme~0))) [2020-12-03 12:36:52,698 INFO L262 CegarLoopResult]: For program point L18-30(lines 18 20) no Hoare annotation was computed. [2020-12-03 12:36:52,698 INFO L262 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,698 INFO L262 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,698 INFO L258 CegarLoopResult]: At program point L18-32(lines 17 22) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~cp~0 1))) (and (<= 1 ULTIMATE.start_main_~cp~0) (<= .cse0 ULTIMATE.start_main_~urilen~0) (= ULTIMATE.start_main_~c~0 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (not (= .cse0 ULTIMATE.start_main_~urilen~0)) (<= 0 ULTIMATE.start_main_~scheme~0))) [2020-12-03 12:36:52,698 INFO L262 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,698 INFO L262 CegarLoopResult]: For program point L18-33(lines 18 20) no Hoare annotation was computed. [2020-12-03 12:36:52,698 INFO L262 CegarLoopResult]: For program point L19-3(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,698 INFO L262 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,699 INFO L262 CegarLoopResult]: For program point L19-5(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,699 INFO L262 CegarLoopResult]: For program point L18-36(lines 18 20) no Hoare annotation was computed. [2020-12-03 12:36:52,699 INFO L262 CegarLoopResult]: For program point L19-6(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,699 INFO L262 CegarLoopResult]: For program point L19-7(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,699 INFO L258 CegarLoopResult]: At program point L18-38(lines 17 22) the Hoare annotation is: (let ((.cse6 (+ ULTIMATE.start_main_~cp~0 1))) (let ((.cse0 (<= 1 ULTIMATE.start_main_~cp~0)) (.cse1 (<= .cse6 ULTIMATE.start_main_~urilen~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (not (= .cse6 ULTIMATE.start_main_~urilen~0))) (.cse4 (<= 0 ULTIMATE.start_main_~scheme~0)) (.cse5 (<= (+ ULTIMATE.start_main_~c~0 2) ULTIMATE.start_main_~tokenlen~0))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~c~0 0) .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= 1 ULTIMATE.start_main_~c~0) .cse5)))) [2020-12-03 12:36:52,699 INFO L262 CegarLoopResult]: For program point L19-8(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,699 INFO L262 CegarLoopResult]: For program point L18-39(lines 18 20) no Hoare annotation was computed. [2020-12-03 12:36:52,699 INFO L262 CegarLoopResult]: For program point L19-9(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,699 INFO L262 CegarLoopResult]: For program point L19-10(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,699 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,700 INFO L258 CegarLoopResult]: At program point L18-41(lines 17 22) the Hoare annotation is: (let ((.cse6 (+ ULTIMATE.start_main_~cp~0 1))) (let ((.cse0 (<= 1 ULTIMATE.start_main_~cp~0)) (.cse1 (<= .cse6 ULTIMATE.start_main_~urilen~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (not (= .cse6 ULTIMATE.start_main_~urilen~0))) (.cse4 (<= 0 ULTIMATE.start_main_~scheme~0)) (.cse5 (<= (+ ULTIMATE.start_main_~c~0 2) ULTIMATE.start_main_~tokenlen~0))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~c~0 0) .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= 1 ULTIMATE.start_main_~c~0) .cse5)))) [2020-12-03 12:36:52,700 INFO L262 CegarLoopResult]: For program point L19-11(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,700 INFO L262 CegarLoopResult]: For program point L18-42(lines 18 20) no Hoare annotation was computed. [2020-12-03 12:36:52,700 INFO L262 CegarLoopResult]: For program point L19-12(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,700 INFO L262 CegarLoopResult]: For program point L19-13(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,700 INFO L258 CegarLoopResult]: At program point L18-44(lines 17 22) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~cp~0 1))) (and (<= 1 ULTIMATE.start_main_~cp~0) (<= .cse0 ULTIMATE.start_main_~urilen~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (not (= .cse0 ULTIMATE.start_main_~urilen~0)) (<= 0 ULTIMATE.start_main_~scheme~0) (<= 1 ULTIMATE.start_main_~c~0))) [2020-12-03 12:36:52,700 INFO L262 CegarLoopResult]: For program point L69(lines 69 75) no Hoare annotation was computed. [2020-12-03 12:36:52,700 INFO L262 CegarLoopResult]: For program point L19-14(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,700 INFO L262 CegarLoopResult]: For program point L18-45(lines 18 20) no Hoare annotation was computed. [2020-12-03 12:36:52,701 INFO L262 CegarLoopResult]: For program point L36(lines 25 83) no Hoare annotation was computed. [2020-12-03 12:36:52,701 INFO L262 CegarLoopResult]: For program point L19-15(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,701 INFO L258 CegarLoopResult]: At program point L69-1(lines 69 75) the Hoare annotation is: (let ((.cse5 (+ ULTIMATE.start_main_~cp~0 1))) (let ((.cse0 (<= 1 ULTIMATE.start_main_~cp~0)) (.cse1 (<= .cse5 ULTIMATE.start_main_~urilen~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (not (= .cse5 ULTIMATE.start_main_~urilen~0))) (.cse4 (<= 0 ULTIMATE.start_main_~scheme~0))) (or (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~c~0 0) .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= 1 ULTIMATE.start_main_~c~0))))) [2020-12-03 12:36:52,701 INFO L258 CegarLoopResult]: At program point L18-47(lines 17 22) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~cp~0 1))) (and (<= 1 ULTIMATE.start_main_~cp~0) (<= .cse0 ULTIMATE.start_main_~urilen~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (not (= .cse0 ULTIMATE.start_main_~urilen~0)) (<= 0 ULTIMATE.start_main_~scheme~0) (<= 1 ULTIMATE.start_main_~c~0))) [2020-12-03 12:36:52,701 INFO L262 CegarLoopResult]: For program point L19-16(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,701 INFO L262 CegarLoopResult]: For program point L18-48(lines 18 20) no Hoare annotation was computed. [2020-12-03 12:36:52,701 INFO L262 CegarLoopResult]: For program point L19-17(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,702 INFO L258 CegarLoopResult]: At program point L18-50(lines 17 22) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~cp~0 1))) (and (<= 1 ULTIMATE.start_main_~cp~0) (<= .cse0 ULTIMATE.start_main_~urilen~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (not (= .cse0 ULTIMATE.start_main_~urilen~0)) (<= 0 ULTIMATE.start_main_~scheme~0) (<= 1 ULTIMATE.start_main_~c~0))) [2020-12-03 12:36:52,702 INFO L262 CegarLoopResult]: For program point L18-51(lines 18 20) no Hoare annotation was computed. [2020-12-03 12:36:52,702 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-03 12:36:52,702 INFO L262 CegarLoopResult]: For program point L37(lines 25 83) no Hoare annotation was computed. [2020-12-03 12:36:52,702 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,702 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,702 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,702 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,702 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-03 12:36:52,702 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,703 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,703 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,703 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,703 INFO L262 CegarLoopResult]: For program point L44(lines 44 80) no Hoare annotation was computed. [2020-12-03 12:36:52,703 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,703 INFO L262 CegarLoopResult]: For program point L61(lines 61 79) no Hoare annotation was computed. [2020-12-03 12:36:52,703 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,703 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,703 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,703 INFO L258 CegarLoopResult]: At program point L47-1(lines 17 52) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~cp~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~scheme~0) (< ULTIMATE.start_main_~cp~0 ULTIMATE.start_main_~urilen~0)) [2020-12-03 12:36:52,703 INFO L262 CegarLoopResult]: For program point L47-2(lines 47 52) no Hoare annotation was computed. [2020-12-03 12:36:52,704 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,704 INFO L265 CegarLoopResult]: At program point L81(lines 25 83) the Hoare annotation is: true [2020-12-03 12:36:52,704 INFO L262 CegarLoopResult]: For program point L48(line 48) no Hoare annotation was computed. [2020-12-03 12:36:52,704 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,704 INFO L262 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-12-03 12:36:52,704 INFO L258 CegarLoopResult]: At program point L65-1(lines 17 77) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~cp~0)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 0 ULTIMATE.start_main_~scheme~0)) (.cse3 (< ULTIMATE.start_main_~cp~0 ULTIMATE.start_main_~urilen~0))) (or (and .cse0 .cse1 .cse2 (<= 1 ULTIMATE.start_main_~c~0) .cse3) (and .cse0 .cse1 (= ULTIMATE.start_main_~c~0 0) .cse2 .cse3))) [2020-12-03 12:36:52,704 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,704 INFO L265 CegarLoopResult]: At program point L82(lines 24 83) the Hoare annotation is: true [2020-12-03 12:36:52,705 INFO L262 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-12-03 12:36:52,705 INFO L262 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-12-03 12:36:52,705 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-03 12:36:52,705 INFO L262 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-12-03 12:36:52,705 INFO L258 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~cp~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~scheme~0) (< ULTIMATE.start_main_~cp~0 ULTIMATE.start_main_~urilen~0)) [2020-12-03 12:36:52,705 INFO L262 CegarLoopResult]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2020-12-03 12:36:52,705 INFO L258 CegarLoopResult]: At program point L18-5(lines 17 22) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~cp~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~scheme~0) (< ULTIMATE.start_main_~cp~0 ULTIMATE.start_main_~urilen~0)) [2020-12-03 12:36:52,705 INFO L262 CegarLoopResult]: For program point L18-6(lines 18 20) no Hoare annotation was computed. [2020-12-03 12:36:52,705 INFO L258 CegarLoopResult]: At program point L18-8(lines 17 22) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~cp~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 ULTIMATE.start_main_~scheme~0) (< ULTIMATE.start_main_~cp~0 ULTIMATE.start_main_~urilen~0)) [2020-12-03 12:36:52,706 INFO L262 CegarLoopResult]: For program point L18-9(lines 18 20) no Hoare annotation was computed. [2020-12-03 12:36:52,706 INFO L262 CegarLoopResult]: For program point L18-12(lines 18 20) no Hoare annotation was computed. [2020-12-03 12:36:52,706 INFO L258 CegarLoopResult]: At program point L18-14(lines 17 22) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~cp~0 1))) (and (<= 1 ULTIMATE.start_main_~cp~0) (<= .cse0 ULTIMATE.start_main_~urilen~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (not (= .cse0 ULTIMATE.start_main_~urilen~0)) (<= 0 ULTIMATE.start_main_~scheme~0))) [2020-12-03 12:36:52,706 INFO L262 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-12-03 12:36:52,706 INFO L262 CegarLoopResult]: For program point L18-15(lines 18 20) no Hoare annotation was computed. [2020-12-03 12:36:52,706 INFO L262 CegarLoopResult]: For program point L35-1(lines 25 83) no Hoare annotation was computed. [2020-12-03 12:36:52,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:36:52 BoogieIcfgContainer [2020-12-03 12:36:52,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:36:52,732 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:36:52,733 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:36:52,733 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:36:52,733 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:36:45" (3/4) ... [2020-12-03 12:36:52,749 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-03 12:36:52,760 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2020-12-03 12:36:52,761 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-03 12:36:52,761 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 12:36:52,762 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 12:36:52,842 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e1815359-1b9c-4a32-bcc7-63dbbf0b4a5c/bin/utaipan/witness.graphml [2020-12-03 12:36:52,842 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:36:52,843 INFO L168 Benchmark]: Toolchain (without parser) took 8912.00 ms. Allocated memory was 104.9 MB in the beginning and 182.5 MB in the end (delta: 77.6 MB). Free memory was 79.2 MB in the beginning and 65.5 MB in the end (delta: 13.7 MB). Peak memory consumption was 90.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:36:52,843 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 81.8 MB. Free memory is still 42.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:36:52,844 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.02 ms. Allocated memory is still 104.9 MB. Free memory was 79.0 MB in the beginning and 81.3 MB in the end (delta: -2.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:36:52,844 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.12 ms. Allocated memory is still 104.9 MB. Free memory was 81.3 MB in the beginning and 79.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:36:52,845 INFO L168 Benchmark]: Boogie Preprocessor took 51.33 ms. Allocated memory is still 104.9 MB. Free memory was 79.1 MB in the beginning and 77.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:36:52,845 INFO L168 Benchmark]: RCFGBuilder took 702.70 ms. Allocated memory is still 104.9 MB. Free memory was 77.6 MB in the beginning and 50.5 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-12-03 12:36:52,845 INFO L168 Benchmark]: TraceAbstraction took 7648.09 ms. Allocated memory was 104.9 MB in the beginning and 182.5 MB in the end (delta: 77.6 MB). Free memory was 50.1 MB in the beginning and 70.8 MB in the end (delta: -20.7 MB). Peak memory consumption was 77.5 MB. Max. memory is 16.1 GB. [2020-12-03 12:36:52,846 INFO L168 Benchmark]: Witness Printer took 109.69 ms. Allocated memory is still 182.5 MB. Free memory was 70.8 MB in the beginning and 65.5 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-03 12:36:52,848 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 81.8 MB. Free memory is still 42.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 323.02 ms. Allocated memory is still 104.9 MB. Free memory was 79.0 MB in the beginning and 81.3 MB in the end (delta: -2.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.12 ms. Allocated memory is still 104.9 MB. Free memory was 81.3 MB in the beginning and 79.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.33 ms. Allocated memory is still 104.9 MB. Free memory was 79.1 MB in the beginning and 77.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 702.70 ms. Allocated memory is still 104.9 MB. Free memory was 77.6 MB in the beginning and 50.5 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7648.09 ms. Allocated memory was 104.9 MB in the beginning and 182.5 MB in the end (delta: 77.6 MB). Free memory was 50.1 MB in the beginning and 70.8 MB in the end (delta: -20.7 MB). Peak memory consumption was 77.5 MB. Max. memory is 16.1 GB. * Witness Printer took 109.69 ms. Allocated memory is still 182.5 MB. Free memory was 70.8 MB in the beginning and 65.5 MB in the end (delta: 5.2 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: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((1 <= cp && 1 == cond) && 0 <= scheme) && cp < urilen - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((1 <= cp && 1 == cond) && 0 <= scheme) && cp < urilen - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((1 <= cp && cp + 1 <= urilen) && !(0 == cond)) && !(cp + 1 == urilen)) && 0 <= scheme) && 1 <= c - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((1 <= cp && cp + 1 <= urilen) && c == 0) && 1 == cond) && !(cp + 1 == urilen)) && 0 <= scheme - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((1 <= cp && 1 == cond) && 0 <= scheme) && cp < urilen - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((1 <= cp && cp + 1 <= urilen) && c == 0) && 1 == cond) && !(cp + 1 == urilen)) && 0 <= scheme) && c + 2 <= tokenlen) || ((((((1 <= cp && cp + 1 <= urilen) && 1 == cond) && !(cp + 1 == urilen)) && 0 <= scheme) && 1 <= c) && c + 2 <= tokenlen) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((1 <= cp && 1 == cond) && 0 <= scheme) && cp < urilen - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: (((1 <= cp && cp + 1 <= urilen) && 1 == cond) && !(cp + 1 == urilen)) && 0 <= scheme - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((1 <= cp && cp + 1 <= urilen) && 1 == cond) && !(cp + 1 == urilen)) && 0 <= scheme) && 1 <= c - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((1 <= cp && 1 == cond) && 0 <= scheme) && 1 <= c) && cp < urilen) || ((((1 <= cp && 1 == cond) && c == 0) && 0 <= scheme) && cp < urilen) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((1 <= cp && cp + 1 <= urilen) && 1 == cond) && !(cp + 1 == urilen)) && 0 <= scheme - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((1 <= cp && cp + 1 <= urilen) && c == 0) && 1 == cond) && !(cp + 1 == urilen)) && 0 <= scheme) && c + 2 <= tokenlen) || ((((((1 <= cp && cp + 1 <= urilen) && 1 == cond) && !(cp + 1 == urilen)) && 0 <= scheme) && 1 <= c) && c + 2 <= tokenlen) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((1 <= cp && !(0 == cond)) && 0 <= scheme) && cp < urilen - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((1 <= cp && cp + 1 <= urilen) && 1 == cond) && !(cp + 1 == urilen)) && 0 <= scheme - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((1 <= cp && cp + 1 <= urilen) && !(0 == cond)) && !(cp + 1 == urilen)) && 0 <= scheme) && 1 <= c - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((1 <= cp && 1 == cond) && 0 <= scheme) && cp < urilen - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((1 <= cp && cp + 1 <= urilen) && 1 == cond) && !(cp + 1 == urilen)) && 0 <= scheme - InvariantResult [Line: 69]: Loop Invariant Derived loop invariant: (((((1 <= cp && cp + 1 <= urilen) && 1 == cond) && !(cp + 1 == urilen)) && c == 0) && 0 <= scheme) || (((((1 <= cp && cp + 1 <= urilen) && 1 == cond) && !(cp + 1 == urilen)) && 0 <= scheme) && 1 <= c) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 88 locations, 18 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.7s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 367 SDtfs, 318 SDslu, 319 SDs, 0 SdLazy, 347 SolverSat, 255 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 59 SyntacticMatches, 9 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 23 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 20 LocationsWithAnnotation, 20 PreInvPairs, 48 NumberOfFragments, 463 HoareAnnotationTreeSize, 20 FomulaSimplifications, 287 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 20 FomulaSimplificationsInter, 697 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 207 NumberOfCodeBlocks, 207 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 224 ConstructedInterpolants, 0 QuantifiedInterpolants, 18920 SizeOfPredicates, 8 NumberOfNonLiveVariables, 96 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 2/9 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...