./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound50.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_755635c1-f334-416d-9000-f1fb2417688f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_755635c1-f334-416d-9000-f1fb2417688f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_755635c1-f334-416d-9000-f1fb2417688f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_755635c1-f334-416d-9000-f1fb2417688f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound50.c -s /tmp/vcloud-vcloud-master/worker/run_dir_755635c1-f334-416d-9000-f1fb2417688f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_755635c1-f334-416d-9000-f1fb2417688f/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 57d0ed4474dbb984b8ca534e9bcf370d3442196d ..................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:30:08,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:30:08,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:30:08,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:30:08,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:30:08,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:30:08,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:30:08,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:30:08,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:30:08,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:30:08,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:30:08,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:30:08,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:30:08,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:30:08,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:30:08,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:30:08,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:30:08,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:30:08,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:30:08,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:30:08,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:30:08,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:30:08,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:30:08,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:30:08,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:30:08,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:30:08,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:30:08,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:30:08,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:30:08,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:30:08,317 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:30:08,318 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:30:08,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:30:08,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:30:08,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:30:08,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:30:08,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:30:08,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:30:08,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:30:08,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:30:08,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:30:08,331 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_755635c1-f334-416d-9000-f1fb2417688f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:30:08,370 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:30:08,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:30:08,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:30:08,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:30:08,373 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:30:08,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:30:08,373 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:30:08,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:30:08,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:30:08,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:30:08,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:30:08,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:30:08,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:30:08,376 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:30:08,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:30:08,377 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:30:08,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:30:08,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:30:08,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:30:08,378 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:30:08,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:30:08,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:30:08,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:30:08,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:30:08,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:30:08,380 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:30:08,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:30:08,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:30:08,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:30:08,381 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_755635c1-f334-416d-9000-f1fb2417688f/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_755635c1-f334-416d-9000-f1fb2417688f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57d0ed4474dbb984b8ca534e9bcf370d3442196d [2020-11-30 00:30:08,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:30:08,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:30:08,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:30:08,716 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:30:08,717 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:30:08,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_755635c1-f334-416d-9000-f1fb2417688f/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound50.c [2020-11-30 00:30:08,814 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_755635c1-f334-416d-9000-f1fb2417688f/bin/uautomizer/data/8736c48b2/257add077cb8461b987082a5b8429f40/FLAG5d08d9481 [2020-11-30 00:30:09,236 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:30:09,236 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_755635c1-f334-416d-9000-f1fb2417688f/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound50.c [2020-11-30 00:30:09,242 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_755635c1-f334-416d-9000-f1fb2417688f/bin/uautomizer/data/8736c48b2/257add077cb8461b987082a5b8429f40/FLAG5d08d9481 [2020-11-30 00:30:09,625 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_755635c1-f334-416d-9000-f1fb2417688f/bin/uautomizer/data/8736c48b2/257add077cb8461b987082a5b8429f40 [2020-11-30 00:30:09,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:30:09,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:30:09,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:30:09,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:30:09,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:30:09,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:30:09" (1/1) ... [2020-11-30 00:30:09,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@271f6a44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:30:09, skipping insertion in model container [2020-11-30 00:30:09,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:30:09" (1/1) ... [2020-11-30 00:30:09,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:30:09,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:30:09,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:30:09,875 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:30:09,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:30:09,935 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:30:09,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:30:09 WrapperNode [2020-11-30 00:30:09,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:30:09,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:30:09,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:30:09,941 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:30:09,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:30:09" (1/1) ... [2020-11-30 00:30:09,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:30:09" (1/1) ... [2020-11-30 00:30:09,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:30:09,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:30:09,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:30:09,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:30:09,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:30:09" (1/1) ... [2020-11-30 00:30:09,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:30:09" (1/1) ... [2020-11-30 00:30:10,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:30:09" (1/1) ... [2020-11-30 00:30:10,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:30:09" (1/1) ... [2020-11-30 00:30:10,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:30:09" (1/1) ... [2020-11-30 00:30:10,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:30:09" (1/1) ... [2020-11-30 00:30:10,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:30:09" (1/1) ... [2020-11-30 00:30:10,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:30:10,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:30:10,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:30:10,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:30:10,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:30:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_755635c1-f334-416d-9000-f1fb2417688f/bin/uautomizer/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 [2020-11-30 00:30:10,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:30:10,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:30:10,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:30:10,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:30:10,346 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:30:10,346 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-30 00:30:10,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:30:10 BoogieIcfgContainer [2020-11-30 00:30:10,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:30:10,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:30:10,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:30:10,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:30:10,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:30:09" (1/3) ... [2020-11-30 00:30:10,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be66e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:30:10, skipping insertion in model container [2020-11-30 00:30:10,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:30:09" (2/3) ... [2020-11-30 00:30:10,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be66e34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:30:10, skipping insertion in model container [2020-11-30 00:30:10,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:30:10" (3/3) ... [2020-11-30 00:30:10,387 INFO L111 eAbstractionObserver]: Analyzing ICFG ps3-ll_unwindbound50.c [2020-11-30 00:30:10,398 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:30:10,402 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 00:30:10,414 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 00:30:10,440 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:30:10,440 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:30:10,440 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:30:10,440 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:30:10,440 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:30:10,441 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:30:10,441 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:30:10,441 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:30:10,455 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-30 00:30:10,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 00:30:10,460 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:30:10,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:30:10,461 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:30:10,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:30:10,467 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-11-30 00:30:10,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:30:10,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423404426] [2020-11-30 00:30:10,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:30:10,579 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:30:10,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1838691213] [2020-11-30 00:30:10,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_755635c1-f334-416d-9000-f1fb2417688f/bin/uautomizer/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 [2020-11-30 00:30:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:30:10,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:30:10,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:30:10,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:30:10,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423404426] [2020-11-30 00:30:10,776 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:30:10,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838691213] [2020-11-30 00:30:10,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:30:10,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:30:10,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313329907] [2020-11-30 00:30:10,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:30:10,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:30:10,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:30:10,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:30:10,811 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-11-30 00:30:10,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:30:10,945 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2020-11-30 00:30:10,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:30:10,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-30 00:30:10,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:30:10,957 INFO L225 Difference]: With dead ends: 44 [2020-11-30 00:30:10,957 INFO L226 Difference]: Without dead ends: 19 [2020-11-30 00:30:10,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:30:10,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-30 00:30:10,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2020-11-30 00:30:10,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 00:30:10,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-30 00:30:10,991 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 6 [2020-11-30 00:30:10,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:30:10,992 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-30 00:30:10,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:30:10,992 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-30 00:30:10,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:30:10,992 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:30:10,993 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-11-30 00:30:11,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-30 00:30:11,199 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:30:11,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:30:11,199 INFO L82 PathProgramCache]: Analyzing trace with hash 885278358, now seen corresponding path program 1 times [2020-11-30 00:30:11,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:30:11,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2615366] [2020-11-30 00:30:11,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:30:11,223 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:30:11,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209011671] [2020-11-30 00:30:11,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_755635c1-f334-416d-9000-f1fb2417688f/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:30:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:30:11,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 00:30:11,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:30:11,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:30:11,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2615366] [2020-11-30 00:30:11,345 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:30:11,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209011671] [2020-11-30 00:30:11,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:30:11,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 00:30:11,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089000795] [2020-11-30 00:30:11,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:30:11,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:30:11,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:30:11,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:30:11,348 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 5 states. [2020-11-30 00:30:11,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:30:11,426 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-11-30 00:30:11,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:30:11,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-30 00:30:11,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:30:11,429 INFO L225 Difference]: With dead ends: 29 [2020-11-30 00:30:11,429 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 00:30:11,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:30:11,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 00:30:11,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-11-30 00:30:11,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-30 00:30:11,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-11-30 00:30:11,435 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2020-11-30 00:30:11,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:30:11,436 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-11-30 00:30:11,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:30:11,436 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-11-30 00:30:11,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:30:11,437 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:30:11,437 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2020-11-30 00:30:11,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:30:11,638 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:30:11,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:30:11,639 INFO L82 PathProgramCache]: Analyzing trace with hash 542015330, now seen corresponding path program 2 times [2020-11-30 00:30:11,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:30:11,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797146070] [2020-11-30 00:30:11,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:30:11,652 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:30:11,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1699135800] [2020-11-30 00:30:11,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_755635c1-f334-416d-9000-f1fb2417688f/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:30:11,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:30:11,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:30:11,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 00:30:11,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:30:11,852 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:30:11,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797146070] [2020-11-30 00:30:11,852 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:30:11,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699135800] [2020-11-30 00:30:11,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:30:11,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-30 00:30:11,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908124699] [2020-11-30 00:30:11,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:30:11,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:30:11,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:30:11,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:30:11,854 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2020-11-30 00:30:11,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:30:11,990 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-11-30 00:30:11,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:30:11,992 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-30 00:30:11,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:30:11,993 INFO L225 Difference]: With dead ends: 33 [2020-11-30 00:30:11,993 INFO L226 Difference]: Without dead ends: 27 [2020-11-30 00:30:11,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:30:11,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-30 00:30:11,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-11-30 00:30:11,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-30 00:30:11,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-11-30 00:30:11,999 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 14 [2020-11-30 00:30:11,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:30:11,999 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-11-30 00:30:11,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:30:11,999 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-11-30 00:30:12,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:30:12,000 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:30:12,000 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1] [2020-11-30 00:30:12,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:30:12,205 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:30:12,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:30:12,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1463251502, now seen corresponding path program 3 times [2020-11-30 00:30:12,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:30:12,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749106755] [2020-11-30 00:30:12,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:30:12,217 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:30:12,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1472385059] [2020-11-30 00:30:12,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_755635c1-f334-416d-9000-f1fb2417688f/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:30:12,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-30 00:30:12,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:30:12,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 00:30:12,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:30:12,347 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:30:12,347 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:30:12,422 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:30:12,428 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:30:12,482 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-30 00:30:12,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749106755] [2020-11-30 00:30:12,482 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:30:12,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472385059] [2020-11-30 00:30:12,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:30:12,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 00:30:12,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168388202] [2020-11-30 00:30:12,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:30:12,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:30:12,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:30:12,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:30:12,484 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2020-11-30 00:30:14,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:30:14,684 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-11-30 00:30:14,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:30:14,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-30 00:30:14,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:30:14,685 INFO L225 Difference]: With dead ends: 25 [2020-11-30 00:30:14,686 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:30:14,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:30:14,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:30:14,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:30:14,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:30:14,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:30:14,687 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-30 00:30:14,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:30:14,687 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:30:14,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:30:14,687 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:30:14,688 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:30:14,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:30:14,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:30:15,041 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2020-11-30 00:30:15,050 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:30:15,050 INFO L274 CegarLoopResult]: For program point L27-1(lines 27 36) no Hoare annotation was computed. [2020-11-30 00:30:15,050 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 00:30:15,051 INFO L270 CegarLoopResult]: At program point L27-3(lines 27 36) the Hoare annotation is: (let ((.cse0 (= (* ULTIMATE.start_main_~x~0 6) (+ (* (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) 2) (* (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) 3) ULTIMATE.start_main_~y~0)))) (or (and .cse0 (= ULTIMATE.start_main_~y~0 0)) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) [2020-11-30 00:30:15,051 INFO L274 CegarLoopResult]: For program point L27-4(lines 27 36) no Hoare annotation was computed. [2020-11-30 00:30:15,051 INFO L274 CegarLoopResult]: For program point L11(lines 11 12) no Hoare annotation was computed. [2020-11-30 00:30:15,051 INFO L274 CegarLoopResult]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2020-11-30 00:30:15,051 INFO L277 CegarLoopResult]: At program point L38(lines 18 39) the Hoare annotation is: true [2020-11-30 00:30:15,051 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:30:15,051 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:30:15,052 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:30:15,052 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 00:30:15,052 INFO L274 CegarLoopResult]: For program point L10(lines 10 13) no Hoare annotation was computed. [2020-11-30 00:30:15,052 INFO L270 CegarLoopResult]: At program point L10-1(lines 30 31) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (* ULTIMATE.start_main_~x~0 6) (+ (* (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) 2) (* (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) 3) ULTIMATE.start_main_~y~0))) [2020-11-30 00:30:15,052 INFO L274 CegarLoopResult]: For program point L10-2(lines 10 13) no Hoare annotation was computed. [2020-11-30 00:30:15,052 INFO L277 CegarLoopResult]: At program point L10-3(lines 9 15) the Hoare annotation is: true [2020-11-30 00:30:15,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:30:15 BoogieIcfgContainer [2020-11-30 00:30:15,078 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:30:15,078 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:30:15,078 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:30:15,079 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:30:15,080 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:30:10" (3/4) ... [2020-11-30 00:30:15,083 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:30:15,096 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-30 00:30:15,096 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:30:15,097 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:30:15,097 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:30:15,149 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_755635c1-f334-416d-9000-f1fb2417688f/bin/uautomizer/witness.graphml [2020-11-30 00:30:15,149 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:30:15,150 INFO L168 Benchmark]: Toolchain (without parser) took 5521.33 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 69.3 MB in the beginning and 95.1 MB in the end (delta: -25.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:30:15,151 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 83.9 MB. Free memory was 65.5 MB in the beginning and 65.5 MB in the end (delta: 18.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:30:15,151 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.01 ms. Allocated memory is still 100.7 MB. Free memory was 68.8 MB in the beginning and 78.9 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:30:15,152 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.99 ms. Allocated memory is still 100.7 MB. Free memory was 78.9 MB in the beginning and 77.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:30:15,153 INFO L168 Benchmark]: Boogie Preprocessor took 40.65 ms. Allocated memory is still 100.7 MB. Free memory was 77.5 MB in the beginning and 76.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:30:15,153 INFO L168 Benchmark]: RCFGBuilder took 340.01 ms. Allocated memory is still 100.7 MB. Free memory was 76.4 MB in the beginning and 64.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:30:15,160 INFO L168 Benchmark]: TraceAbstraction took 4714.56 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 64.2 MB in the beginning and 98.0 MB in the end (delta: -33.8 MB). Peak memory consumption was 27.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:30:15,163 INFO L168 Benchmark]: Witness Printer took 71.01 ms. Allocated memory is still 121.6 MB. Free memory was 98.0 MB in the beginning and 95.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:30:15,171 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 83.9 MB. Free memory was 65.5 MB in the beginning and 65.5 MB in the end (delta: 18.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 307.01 ms. Allocated memory is still 100.7 MB. Free memory was 68.8 MB in the beginning and 78.9 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.99 ms. Allocated memory is still 100.7 MB. Free memory was 78.9 MB in the beginning and 77.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.65 ms. Allocated memory is still 100.7 MB. Free memory was 77.5 MB in the beginning and 76.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 340.01 ms. Allocated memory is still 100.7 MB. Free memory was 76.4 MB in the beginning and 64.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4714.56 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 64.2 MB in the beginning and 98.0 MB in the end (delta: -33.8 MB). Peak memory consumption was 27.6 MB. Max. memory is 16.1 GB. * Witness Printer took 71.01 ms. Allocated memory is still 121.6 MB. Free memory was 98.0 MB in the beginning and 95.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (x * 6 == y * y * y * 2 + y * y * 3 + y && y == 0) || (1 <= cond && x * 6 == y * y * y * 2 + y * y * 3 + y) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 == cond && x * 6 == y * y * y * 2 + y * y * 3 + y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 48 SDslu, 92 SDs, 0 SdLazy, 84 SolverSat, 25 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 16 NumberOfFragments, 66 HoareAnnotationTreeSize, 4 FomulaSimplifications, 163 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 48 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 3607 SizeOfPredicates, 18 NumberOfNonLiveVariables, 288 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 20/34 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...