./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label48.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f02c325c-43be-4670-8b1a-6ed92320ffb8/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f02c325c-43be-4670-8b1a-6ed92320ffb8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f02c325c-43be-4670-8b1a-6ed92320ffb8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f02c325c-43be-4670-8b1a-6ed92320ffb8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label48.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f02c325c-43be-4670-8b1a-6ed92320ffb8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f02c325c-43be-4670-8b1a-6ed92320ffb8/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 40a1e4973a5bf53655cfcab4993cc11275e56426 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:44:37,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:44:37,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:44:37,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:44:37,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:44:37,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:44:37,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:44:37,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:44:37,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:44:37,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:44:37,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:44:37,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:44:37,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:44:37,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:44:37,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:44:37,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:44:37,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:44:37,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:44:37,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:44:37,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:44:37,326 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:44:37,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:44:37,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:44:37,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:44:37,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:44:37,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:44:37,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:44:37,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:44:37,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:44:37,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:44:37,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:44:37,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:44:37,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:44:37,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:44:37,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:44:37,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:44:37,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:44:37,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:44:37,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:44:37,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:44:37,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:44:37,355 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f02c325c-43be-4670-8b1a-6ed92320ffb8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:44:37,400 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:44:37,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:44:37,401 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:44:37,401 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:44:37,402 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:44:37,402 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:44:37,402 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:44:37,410 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:44:37,410 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:44:37,410 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:44:37,411 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:44:37,412 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:44:37,412 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:44:37,412 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:44:37,412 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:44:37,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:44:37,413 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:44:37,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:44:37,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:44:37,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:44:37,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:44:37,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:44:37,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:44:37,415 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:44:37,415 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:44:37,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:44:37,416 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:44:37,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:44:37,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:44:37,418 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:44:37,418 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:44:37,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:44:37,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:44:37,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:44:37,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:44:37,420 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:44:37,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:44:37,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:44:37,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:44:37,420 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:44:37,421 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_f02c325c-43be-4670-8b1a-6ed92320ffb8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f02c325c-43be-4670-8b1a-6ed92320ffb8/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40a1e4973a5bf53655cfcab4993cc11275e56426 [2020-11-28 07:44:37,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:44:37,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:44:37,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:44:37,694 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:44:37,695 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:44:37,696 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f02c325c-43be-4670-8b1a-6ed92320ffb8/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label48.c [2020-11-28 07:44:37,798 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f02c325c-43be-4670-8b1a-6ed92320ffb8/bin/utaipan/data/010681229/20564e5f10574fd588d22abd22191091/FLAG3c8c8ff60 [2020-11-28 07:44:38,341 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:44:38,341 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f02c325c-43be-4670-8b1a-6ed92320ffb8/sv-benchmarks/c/eca-rers2012/Problem01_label48.c [2020-11-28 07:44:38,355 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f02c325c-43be-4670-8b1a-6ed92320ffb8/bin/utaipan/data/010681229/20564e5f10574fd588d22abd22191091/FLAG3c8c8ff60 [2020-11-28 07:44:38,591 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f02c325c-43be-4670-8b1a-6ed92320ffb8/bin/utaipan/data/010681229/20564e5f10574fd588d22abd22191091 [2020-11-28 07:44:38,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:44:38,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:44:38,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:44:38,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:44:38,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:44:38,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:44:38" (1/1) ... [2020-11-28 07:44:38,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@670c5ccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:38, skipping insertion in model container [2020-11-28 07:44:38,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:44:38" (1/1) ... [2020-11-28 07:44:38,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:44:38,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:44:39,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:44:39,139 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:44:39,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:44:39,283 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:44:39,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:39 WrapperNode [2020-11-28 07:44:39,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:44:39,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:44:39,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:44:39,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:44:39,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:39" (1/1) ... [2020-11-28 07:44:39,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:39" (1/1) ... [2020-11-28 07:44:39,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:44:39,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:44:39,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:44:39,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:44:39,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:39" (1/1) ... [2020-11-28 07:44:39,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:39" (1/1) ... [2020-11-28 07:44:39,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:39" (1/1) ... [2020-11-28 07:44:39,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:39" (1/1) ... [2020-11-28 07:44:39,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:39" (1/1) ... [2020-11-28 07:44:39,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:39" (1/1) ... [2020-11-28 07:44:39,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:39" (1/1) ... [2020-11-28 07:44:39,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:44:39,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:44:39,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:44:39,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:44:39,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f02c325c-43be-4670-8b1a-6ed92320ffb8/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:44:39,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:44:39,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:44:39,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:44:39,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:44:41,873 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:44:41,874 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:44:41,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:44:41 BoogieIcfgContainer [2020-11-28 07:44:41,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:44:41,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:44:41,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:44:41,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:44:41,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:44:38" (1/3) ... [2020-11-28 07:44:41,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2136cda8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:44:41, skipping insertion in model container [2020-11-28 07:44:41,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:39" (2/3) ... [2020-11-28 07:44:41,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2136cda8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:44:41, skipping insertion in model container [2020-11-28 07:44:41,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:44:41" (3/3) ... [2020-11-28 07:44:41,886 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label48.c [2020-11-28 07:44:41,901 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:44:41,906 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:44:41,918 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:44:41,953 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:44:41,954 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:44:41,954 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:44:41,954 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:44:41,954 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:44:41,954 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:44:41,954 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:44:41,954 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:44:41,971 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-28 07:44:41,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-28 07:44:41,980 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:41,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:41,982 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:41,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:41,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1520712813, now seen corresponding path program 1 times [2020-11-28 07:44:41,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:41,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543805868] [2020-11-28 07:44:41,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:42,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:44:42,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543805868] [2020-11-28 07:44:42,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:42,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:42,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258908369] [2020-11-28 07:44:42,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:42,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:42,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:42,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:42,396 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-11-28 07:44:42,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:42,990 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-11-28 07:44:42,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:42,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-11-28 07:44:42,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:43,003 INFO L225 Difference]: With dead ends: 224 [2020-11-28 07:44:43,003 INFO L226 Difference]: Without dead ends: 145 [2020-11-28 07:44:43,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:43,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-28 07:44:43,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-28 07:44:43,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-28 07:44:43,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2020-11-28 07:44:43,067 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2020-11-28 07:44:43,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:43,068 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2020-11-28 07:44:43,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:43,068 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2020-11-28 07:44:43,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-28 07:44:43,074 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:43,074 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:43,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:44:43,075 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:43,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:43,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1975133374, now seen corresponding path program 1 times [2020-11-28 07:44:43,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:43,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339044848] [2020-11-28 07:44:43,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:43,180 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:44:43,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339044848] [2020-11-28 07:44:43,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:43,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:43,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443411259] [2020-11-28 07:44:43,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:43,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:43,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:43,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:43,190 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2020-11-28 07:44:43,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:43,721 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2020-11-28 07:44:43,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:43,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-11-28 07:44:43,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:43,725 INFO L225 Difference]: With dead ends: 431 [2020-11-28 07:44:43,725 INFO L226 Difference]: Without dead ends: 287 [2020-11-28 07:44:43,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:43,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-28 07:44:43,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-11-28 07:44:43,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-28 07:44:43,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 468 transitions. [2020-11-28 07:44:43,770 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 468 transitions. Word has length 77 [2020-11-28 07:44:43,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:43,771 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 468 transitions. [2020-11-28 07:44:43,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:43,771 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 468 transitions. [2020-11-28 07:44:43,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-28 07:44:43,780 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:43,780 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:43,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:44:43,780 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:43,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:43,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1832085956, now seen corresponding path program 1 times [2020-11-28 07:44:43,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:43,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032300910] [2020-11-28 07:44:43,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:44,033 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:44:44,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032300910] [2020-11-28 07:44:44,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:44,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:44:44,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686056082] [2020-11-28 07:44:44,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:44:44,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:44,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:44:44,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:44:44,036 INFO L87 Difference]: Start difference. First operand 287 states and 468 transitions. Second operand 4 states. [2020-11-28 07:44:44,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:44,743 INFO L93 Difference]: Finished difference Result 784 states and 1255 transitions. [2020-11-28 07:44:44,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:44:44,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-11-28 07:44:44,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:44,747 INFO L225 Difference]: With dead ends: 784 [2020-11-28 07:44:44,747 INFO L226 Difference]: Without dead ends: 429 [2020-11-28 07:44:44,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:44:44,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-11-28 07:44:44,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2020-11-28 07:44:44,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-11-28 07:44:44,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 557 transitions. [2020-11-28 07:44:44,783 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 557 transitions. Word has length 78 [2020-11-28 07:44:44,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:44,783 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 557 transitions. [2020-11-28 07:44:44,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:44:44,783 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 557 transitions. [2020-11-28 07:44:44,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-28 07:44:44,785 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:44,785 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:44,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:44:44,785 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:44,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:44,786 INFO L82 PathProgramCache]: Analyzing trace with hash 102972439, now seen corresponding path program 1 times [2020-11-28 07:44:44,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:44,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390688119] [2020-11-28 07:44:44,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:44,897 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:44:44,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390688119] [2020-11-28 07:44:44,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:44,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:44:44,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736329529] [2020-11-28 07:44:44,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:44:44,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:44,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:44:44,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:44:44,900 INFO L87 Difference]: Start difference. First operand 429 states and 557 transitions. Second operand 4 states. [2020-11-28 07:44:45,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:45,436 INFO L93 Difference]: Finished difference Result 999 states and 1360 transitions. [2020-11-28 07:44:45,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:44:45,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-11-28 07:44:45,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:45,447 INFO L225 Difference]: With dead ends: 999 [2020-11-28 07:44:45,448 INFO L226 Difference]: Without dead ends: 642 [2020-11-28 07:44:45,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:44:45,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-11-28 07:44:45,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2020-11-28 07:44:45,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-11-28 07:44:45,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 851 transitions. [2020-11-28 07:44:45,480 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 851 transitions. Word has length 83 [2020-11-28 07:44:45,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:45,481 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 851 transitions. [2020-11-28 07:44:45,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:44:45,481 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 851 transitions. [2020-11-28 07:44:45,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-11-28 07:44:45,482 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:45,482 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:45,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:44:45,483 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:45,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:45,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1752405805, now seen corresponding path program 1 times [2020-11-28 07:44:45,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:45,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753695077] [2020-11-28 07:44:45,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:45,560 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 07:44:45,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753695077] [2020-11-28 07:44:45,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:45,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:44:45,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464861177] [2020-11-28 07:44:45,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:45,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:45,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:45,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:45,564 INFO L87 Difference]: Start difference. First operand 642 states and 851 transitions. Second operand 3 states. [2020-11-28 07:44:45,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:45,930 INFO L93 Difference]: Finished difference Result 1567 states and 2073 transitions. [2020-11-28 07:44:45,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:45,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-11-28 07:44:45,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:45,945 INFO L225 Difference]: With dead ends: 1567 [2020-11-28 07:44:45,945 INFO L226 Difference]: Without dead ends: 997 [2020-11-28 07:44:45,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:45,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-28 07:44:45,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 784. [2020-11-28 07:44:45,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-28 07:44:45,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1029 transitions. [2020-11-28 07:44:45,978 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1029 transitions. Word has length 92 [2020-11-28 07:44:45,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:45,978 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1029 transitions. [2020-11-28 07:44:45,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:45,978 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1029 transitions. [2020-11-28 07:44:45,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-28 07:44:45,984 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:45,984 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:45,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:44:45,985 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:45,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:45,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1072322786, now seen corresponding path program 1 times [2020-11-28 07:44:45,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:45,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635171108] [2020-11-28 07:44:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:46,093 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:44:46,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635171108] [2020-11-28 07:44:46,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:46,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:44:46,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138854911] [2020-11-28 07:44:46,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:44:46,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:46,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:44:46,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:44:46,098 INFO L87 Difference]: Start difference. First operand 784 states and 1029 transitions. Second operand 4 states. [2020-11-28 07:44:46,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:46,723 INFO L93 Difference]: Finished difference Result 1709 states and 2302 transitions. [2020-11-28 07:44:46,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:44:46,725 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-11-28 07:44:46,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:46,734 INFO L225 Difference]: With dead ends: 1709 [2020-11-28 07:44:46,734 INFO L226 Difference]: Without dead ends: 997 [2020-11-28 07:44:46,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:44:46,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-28 07:44:46,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2020-11-28 07:44:46,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-11-28 07:44:46,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1202 transitions. [2020-11-28 07:44:46,766 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1202 transitions. Word has length 98 [2020-11-28 07:44:46,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:46,766 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1202 transitions. [2020-11-28 07:44:46,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:44:46,766 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1202 transitions. [2020-11-28 07:44:46,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-11-28 07:44:46,769 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:46,769 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:46,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:44:46,769 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:46,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:46,772 INFO L82 PathProgramCache]: Analyzing trace with hash 414565115, now seen corresponding path program 1 times [2020-11-28 07:44:46,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:46,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14094157] [2020-11-28 07:44:46,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:46,879 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 07:44:46,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14094157] [2020-11-28 07:44:46,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:46,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:44:46,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428311589] [2020-11-28 07:44:46,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:44:46,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:46,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:44:46,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:44:46,882 INFO L87 Difference]: Start difference. First operand 926 states and 1202 transitions. Second operand 4 states. [2020-11-28 07:44:47,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:47,410 INFO L93 Difference]: Finished difference Result 1993 states and 2589 transitions. [2020-11-28 07:44:47,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:44:47,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-11-28 07:44:47,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:47,421 INFO L225 Difference]: With dead ends: 1993 [2020-11-28 07:44:47,422 INFO L226 Difference]: Without dead ends: 1139 [2020-11-28 07:44:47,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:44:47,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-11-28 07:44:47,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1068. [2020-11-28 07:44:47,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-28 07:44:47,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1363 transitions. [2020-11-28 07:44:47,457 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1363 transitions. Word has length 112 [2020-11-28 07:44:47,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:47,457 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1363 transitions. [2020-11-28 07:44:47,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:44:47,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1363 transitions. [2020-11-28 07:44:47,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-11-28 07:44:47,461 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:47,462 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:47,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:44:47,462 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:47,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:47,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1154622600, now seen corresponding path program 1 times [2020-11-28 07:44:47,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:47,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404068734] [2020-11-28 07:44:47,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:47,605 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:44:47,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404068734] [2020-11-28 07:44:47,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:47,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:44:47,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440103071] [2020-11-28 07:44:47,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:44:47,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:47,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:44:47,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:44:47,607 INFO L87 Difference]: Start difference. First operand 1068 states and 1363 transitions. Second operand 4 states. [2020-11-28 07:44:48,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:48,297 INFO L93 Difference]: Finished difference Result 2277 states and 2909 transitions. [2020-11-28 07:44:48,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:44:48,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-11-28 07:44:48,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:48,305 INFO L225 Difference]: With dead ends: 2277 [2020-11-28 07:44:48,305 INFO L226 Difference]: Without dead ends: 1281 [2020-11-28 07:44:48,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:44:48,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-11-28 07:44:48,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 997. [2020-11-28 07:44:48,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-11-28 07:44:48,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1203 transitions. [2020-11-28 07:44:48,363 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1203 transitions. Word has length 129 [2020-11-28 07:44:48,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:48,365 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1203 transitions. [2020-11-28 07:44:48,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:44:48,365 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1203 transitions. [2020-11-28 07:44:48,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-11-28 07:44:48,368 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:48,368 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:48,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:44:48,369 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:48,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:48,369 INFO L82 PathProgramCache]: Analyzing trace with hash -879964128, now seen corresponding path program 1 times [2020-11-28 07:44:48,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:48,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397808865] [2020-11-28 07:44:48,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:48,502 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-11-28 07:44:48,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397808865] [2020-11-28 07:44:48,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:48,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:44:48,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942634727] [2020-11-28 07:44:48,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:48,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:48,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:48,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:48,509 INFO L87 Difference]: Start difference. First operand 997 states and 1203 transitions. Second operand 3 states. [2020-11-28 07:44:48,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:48,930 INFO L93 Difference]: Finished difference Result 2135 states and 2589 transitions. [2020-11-28 07:44:48,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:48,930 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 172 [2020-11-28 07:44:48,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:48,937 INFO L225 Difference]: With dead ends: 2135 [2020-11-28 07:44:48,937 INFO L226 Difference]: Without dead ends: 1210 [2020-11-28 07:44:48,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:48,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-11-28 07:44:48,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1139. [2020-11-28 07:44:48,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-11-28 07:44:48,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1359 transitions. [2020-11-28 07:44:48,991 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1359 transitions. Word has length 172 [2020-11-28 07:44:48,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:48,992 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1359 transitions. [2020-11-28 07:44:48,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:48,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1359 transitions. [2020-11-28 07:44:48,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-11-28 07:44:48,998 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:48,998 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:48,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:44:48,998 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:48,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:48,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1976356503, now seen corresponding path program 1 times [2020-11-28 07:44:48,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:48,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113334327] [2020-11-28 07:44:48,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:49,409 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 121 proven. 64 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-11-28 07:44:49,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113334327] [2020-11-28 07:44:49,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437755884] [2020-11-28 07:44:49,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f02c325c-43be-4670-8b1a-6ed92320ffb8/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:44:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:49,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:44:49,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:44:49,794 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-11-28 07:44:49,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:44:49,870 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-11-28 07:44:49,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:44:49,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-28 07:44:49,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934176907] [2020-11-28 07:44:49,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:49,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:49,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:49,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:44:49,873 INFO L87 Difference]: Start difference. First operand 1139 states and 1359 transitions. Second operand 3 states. [2020-11-28 07:44:50,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:50,327 INFO L93 Difference]: Finished difference Result 2561 states and 3082 transitions. [2020-11-28 07:44:50,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:50,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2020-11-28 07:44:50,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:50,336 INFO L225 Difference]: With dead ends: 2561 [2020-11-28 07:44:50,336 INFO L226 Difference]: Without dead ends: 1352 [2020-11-28 07:44:50,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 386 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:44:50,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2020-11-28 07:44:50,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1281. [2020-11-28 07:44:50,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2020-11-28 07:44:50,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1510 transitions. [2020-11-28 07:44:50,384 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1510 transitions. Word has length 194 [2020-11-28 07:44:50,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:50,385 INFO L481 AbstractCegarLoop]: Abstraction has 1281 states and 1510 transitions. [2020-11-28 07:44:50,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:50,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1510 transitions. [2020-11-28 07:44:50,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-11-28 07:44:50,389 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:50,389 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:50,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-28 07:44:50,615 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:50,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:50,615 INFO L82 PathProgramCache]: Analyzing trace with hash 15739174, now seen corresponding path program 1 times [2020-11-28 07:44:50,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:50,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395976373] [2020-11-28 07:44:50,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:50,840 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-11-28 07:44:50,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395976373] [2020-11-28 07:44:50,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:50,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:44:50,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718448995] [2020-11-28 07:44:50,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:50,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:50,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:50,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:50,843 INFO L87 Difference]: Start difference. First operand 1281 states and 1510 transitions. Second operand 3 states. [2020-11-28 07:44:51,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:51,231 INFO L93 Difference]: Finished difference Result 2701 states and 3185 transitions. [2020-11-28 07:44:51,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:51,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2020-11-28 07:44:51,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:51,232 INFO L225 Difference]: With dead ends: 2701 [2020-11-28 07:44:51,232 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:44:51,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:51,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:44:51,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:44:51,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:44:51,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:44:51,236 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 197 [2020-11-28 07:44:51,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:51,236 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:44:51,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:51,236 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:44:51,236 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:44:51,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-28 07:44:51,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:44:51,494 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2020-11-28 07:44:51,710 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2020-11-28 07:44:51,713 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-28 07:44:51,713 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-28 07:44:51,714 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-28 07:44:51,714 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-28 07:44:51,714 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-28 07:44:51,714 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-28 07:44:51,714 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-28 07:44:51,714 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-28 07:44:51,714 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-28 07:44:51,714 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-28 07:44:51,714 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-28 07:44:51,714 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-28 07:44:51,714 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-28 07:44:51,714 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-28 07:44:51,715 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-28 07:44:51,715 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-28 07:44:51,715 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-28 07:44:51,715 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-28 07:44:51,715 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-28 07:44:51,715 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-28 07:44:51,715 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-28 07:44:51,715 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-28 07:44:51,715 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-28 07:44:51,715 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-28 07:44:51,716 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-28 07:44:51,716 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-28 07:44:51,716 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-28 07:44:51,716 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-28 07:44:51,716 INFO L274 CegarLoopResult]: For program point L545-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:44:51,716 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-28 07:44:51,716 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-28 07:44:51,716 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-28 07:44:51,716 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-28 07:44:51,716 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-28 07:44:51,716 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-28 07:44:51,716 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-28 07:44:51,717 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-28 07:44:51,717 INFO L274 CegarLoopResult]: For program point L548-1(lines 40 585) no Hoare annotation was computed. [2020-11-28 07:44:51,717 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:44:51,717 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-28 07:44:51,717 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-28 07:44:51,717 INFO L274 CegarLoopResult]: For program point L549(line 549) no Hoare annotation was computed. [2020-11-28 07:44:51,717 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-28 07:44:51,718 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse1 (<= 15 ~a8~0)) (.cse3 (= ~a7~0 1)) (.cse2 (= ~a16~0 6)) (.cse0 (= ~a20~0 1))) (or (and (<= ~a16~0 5) (not .cse0)) (and .cse0 .cse1) (<= ~a16~0 4) (and .cse2 (not .cse3) .cse1) (and .cse3 .cse0) (and (= ~a21~0 1) .cse2 (= ~a12~0 8) .cse0 (= ~a17~0 1)))) [2020-11-28 07:44:51,718 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-28 07:44:51,718 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-28 07:44:51,718 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-28 07:44:51,718 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-28 07:44:51,718 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-28 07:44:51,718 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-28 07:44:51,718 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-28 07:44:51,718 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:44:51,718 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-28 07:44:51,719 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-28 07:44:51,719 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-28 07:44:51,719 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-28 07:44:51,719 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-28 07:44:51,719 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-28 07:44:51,719 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-28 07:44:51,719 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-28 07:44:51,719 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-28 07:44:51,719 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-28 07:44:51,719 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-28 07:44:51,720 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-28 07:44:51,720 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-28 07:44:51,720 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-28 07:44:51,720 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-28 07:44:51,720 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse1 (<= 15 ~a8~0)) (.cse3 (= ~a7~0 1)) (.cse2 (= ~a16~0 6)) (.cse0 (= ~a20~0 1))) (or (and (<= ~a16~0 5) (not .cse0)) (and .cse0 .cse1) (<= ~a16~0 4) (and .cse2 (not .cse3) .cse1) (and .cse3 .cse0) (and (= ~a21~0 1) .cse2 (= ~a12~0 8) .cse0 (= ~a17~0 1)))) [2020-11-28 07:44:51,720 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-28 07:44:51,720 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:44:51,720 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-28 07:44:51,721 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-28 07:44:51,721 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-28 07:44:51,721 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-28 07:44:51,721 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-28 07:44:51,721 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-28 07:44:51,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:44:51 BoogieIcfgContainer [2020-11-28 07:44:51,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:44:51,751 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:44:51,751 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:44:51,751 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:44:51,752 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:44:41" (3/4) ... [2020-11-28 07:44:51,755 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:44:51,785 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-11-28 07:44:51,786 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-28 07:44:51,788 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-28 07:44:51,789 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 07:44:51,949 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f02c325c-43be-4670-8b1a-6ed92320ffb8/bin/utaipan/witness.graphml [2020-11-28 07:44:51,949 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:44:51,950 INFO L168 Benchmark]: Toolchain (without parser) took 13353.45 ms. Allocated memory was 86.0 MB in the beginning and 247.5 MB in the end (delta: 161.5 MB). Free memory was 54.2 MB in the beginning and 183.4 MB in the end (delta: -129.2 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:51,950 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 86.0 MB. Free memory is still 42.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:44:51,951 INFO L168 Benchmark]: CACSL2BoogieTranslator took 683.03 ms. Allocated memory is still 86.0 MB. Free memory was 54.0 MB in the beginning and 47.1 MB in the end (delta: 6.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:51,951 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.57 ms. Allocated memory is still 86.0 MB. Free memory was 47.1 MB in the beginning and 41.5 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:51,951 INFO L168 Benchmark]: Boogie Preprocessor took 92.02 ms. Allocated memory is still 86.0 MB. Free memory was 41.5 MB in the beginning and 37.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:51,952 INFO L168 Benchmark]: RCFGBuilder took 2409.54 ms. Allocated memory was 86.0 MB in the beginning and 134.2 MB in the end (delta: 48.2 MB). Free memory was 37.0 MB in the beginning and 82.8 MB in the end (delta: -45.8 MB). Peak memory consumption was 32.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:51,952 INFO L168 Benchmark]: TraceAbstraction took 9871.46 ms. Allocated memory was 134.2 MB in the beginning and 247.5 MB in the end (delta: 113.2 MB). Free memory was 81.7 MB in the beginning and 199.1 MB in the end (delta: -117.3 MB). Peak memory consumption was 121.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:51,953 INFO L168 Benchmark]: Witness Printer took 198.13 ms. Allocated memory is still 247.5 MB. Free memory was 199.1 MB in the beginning and 183.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:51,955 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 86.0 MB. Free memory is still 42.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 683.03 ms. Allocated memory is still 86.0 MB. Free memory was 54.0 MB in the beginning and 47.1 MB in the end (delta: 6.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.57 ms. Allocated memory is still 86.0 MB. Free memory was 47.1 MB in the beginning and 41.5 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 92.02 ms. Allocated memory is still 86.0 MB. Free memory was 41.5 MB in the beginning and 37.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2409.54 ms. Allocated memory was 86.0 MB in the beginning and 134.2 MB in the end (delta: 48.2 MB). Free memory was 37.0 MB in the beginning and 82.8 MB in the end (delta: -45.8 MB). Peak memory consumption was 32.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9871.46 ms. Allocated memory was 134.2 MB in the beginning and 247.5 MB in the end (delta: 113.2 MB). Free memory was 81.7 MB in the beginning and 199.1 MB in the end (delta: -117.3 MB). Peak memory consumption was 121.7 MB. Max. memory is 16.1 GB. * Witness Printer took 198.13 ms. Allocated memory is still 247.5 MB. Free memory was 199.1 MB in the beginning and 183.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((a16 <= 5 && !(a20 == 1)) || (a20 == 1 && 15 <= a8)) || a16 <= 4) || ((a16 == 6 && !(a7 == 1)) && 15 <= a8)) || (a7 == 1 && a20 == 1)) || ((((a21 == 1 && a16 == 6) && a12 == 8) && a20 == 1) && a17 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((a16 <= 5 && !(a20 == 1)) || (a20 == 1 && 15 <= a8)) || a16 <= 4) || ((a16 == 6 && !(a7 == 1)) && 15 <= a8)) || (a7 == 1 && a20 == 1)) || ((((a21 == 1 && a16 == 6) && a12 == 8) && a20 == 1) && a17 == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.2s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 569 SDtfs, 1013 SDslu, 55 SDs, 0 SdLazy, 2760 SolverSat, 709 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 421 GetRequests, 401 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1281occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 781 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 49 NumberOfFragments, 107 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1688 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 386 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 1497 NumberOfCodeBlocks, 1497 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1678 ConstructedInterpolants, 0 QuantifiedInterpolants, 906012 SizeOfPredicates, 1 NumberOfNonLiveVariables, 447 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 13 InterpolantComputations, 12 PerfectInterpolantSequences, 1178/1242 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...