./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5a866559-2016-4cac-8f58-02f6ec228d62/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5a866559-2016-4cac-8f58-02f6ec228d62/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5a866559-2016-4cac-8f58-02f6ec228d62/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5a866559-2016-4cac-8f58-02f6ec228d62/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5a866559-2016-4cac-8f58-02f6ec228d62/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5a866559-2016-4cac-8f58-02f6ec228d62/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 bd22fe84d520ec30ecb06ab78e8b0a57d2fc3fd5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:30:38,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:30:38,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:30:38,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:30:38,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:30:38,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:30:38,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:30:38,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:30:38,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:30:38,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:30:38,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:30:38,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:30:38,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:30:38,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:30:38,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:30:38,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:30:38,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:30:38,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:30:38,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:30:38,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:30:38,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:30:38,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:30:38,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:30:38,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:30:38,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:30:38,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:30:38,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:30:38,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:30:38,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:30:38,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:30:38,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:30:38,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:30:38,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:30:38,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:30:38,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:30:38,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:30:38,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:30:38,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:30:38,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:30:38,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:30:38,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:30:38,312 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5a866559-2016-4cac-8f58-02f6ec228d62/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:30:38,353 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:30:38,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:30:38,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:30:38,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:30:38,355 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:30:38,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:30:38,355 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:30:38,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:30:38,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:30:38,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:30:38,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:30:38,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:30:38,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:30:38,357 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:30:38,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:30:38,357 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:30:38,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:30:38,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:30:38,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:30:38,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:30:38,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:30:38,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:30:38,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:30:38,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:30:38,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:30:38,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:30:38,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:30:38,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:30:38,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:30:38,360 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_5a866559-2016-4cac-8f58-02f6ec228d62/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5a866559-2016-4cac-8f58-02f6ec228d62/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd22fe84d520ec30ecb06ab78e8b0a57d2fc3fd5 [2020-12-01 15:30:38,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:30:38,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:30:38,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:30:38,670 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:30:38,671 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:30:38,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5a866559-2016-4cac-8f58-02f6ec228d62/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound2.c [2020-12-01 15:30:38,771 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5a866559-2016-4cac-8f58-02f6ec228d62/bin/uautomizer/data/6a635155c/c815d4d0254d42e3b1f1fb4e2747c149/FLAGef461fd27 [2020-12-01 15:30:39,351 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:30:39,353 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5a866559-2016-4cac-8f58-02f6ec228d62/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound2.c [2020-12-01 15:30:39,368 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5a866559-2016-4cac-8f58-02f6ec228d62/bin/uautomizer/data/6a635155c/c815d4d0254d42e3b1f1fb4e2747c149/FLAGef461fd27 [2020-12-01 15:30:39,692 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5a866559-2016-4cac-8f58-02f6ec228d62/bin/uautomizer/data/6a635155c/c815d4d0254d42e3b1f1fb4e2747c149 [2020-12-01 15:30:39,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:30:39,698 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:30:39,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:30:39,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:30:39,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:30:39,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:30:39" (1/1) ... [2020-12-01 15:30:39,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44fe0d54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:30:39, skipping insertion in model container [2020-12-01 15:30:39,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:30:39" (1/1) ... [2020-12-01 15:30:39,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:30:39,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:30:39,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:30:39,986 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:30:40,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:30:40,031 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:30:40,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:30:40 WrapperNode [2020-12-01 15:30:40,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:30:40,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:30:40,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:30:40,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:30:40,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:30:40" (1/1) ... [2020-12-01 15:30:40,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:30:40" (1/1) ... [2020-12-01 15:30:40,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:30:40,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:30:40,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:30:40,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:30:40,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:30:40" (1/1) ... [2020-12-01 15:30:40,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:30:40" (1/1) ... [2020-12-01 15:30:40,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:30:40" (1/1) ... [2020-12-01 15:30:40,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:30:40" (1/1) ... [2020-12-01 15:30:40,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:30:40" (1/1) ... [2020-12-01 15:30:40,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:30:40" (1/1) ... [2020-12-01 15:30:40,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:30:40" (1/1) ... [2020-12-01 15:30:40,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:30:40,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:30:40,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:30:40,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:30:40,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:30:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a866559-2016-4cac-8f58-02f6ec228d62/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 [2020-12-01 15:30:40,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:30:40,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:30:40,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:30:40,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:30:40,507 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:30:40,507 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-12-01 15:30:40,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:30:40 BoogieIcfgContainer [2020-12-01 15:30:40,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:30:40,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:30:40,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:30:40,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:30:40,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:30:39" (1/3) ... [2020-12-01 15:30:40,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e7762a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:30:40, skipping insertion in model container [2020-12-01 15:30:40,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:30:40" (2/3) ... [2020-12-01 15:30:40,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e7762a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:30:40, skipping insertion in model container [2020-12-01 15:30:40,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:30:40" (3/3) ... [2020-12-01 15:30:40,521 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound2.c [2020-12-01 15:30:40,549 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:30:40,560 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-01 15:30:40,601 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-01 15:30:40,628 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:30:40,629 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:30:40,629 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:30:40,629 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:30:40,629 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:30:40,630 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:30:40,630 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:30:40,630 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:30:40,647 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-12-01 15:30:40,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 15:30:40,666 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:30:40,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:30:40,668 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:30:40,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:30:40,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-12-01 15:30:40,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:30:40,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593007487] [2020-12-01 15:30:40,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:30:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:30:40,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:30:40,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593007487] [2020-12-01 15:30:40,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:30:40,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:30:40,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696669718] [2020-12-01 15:30:40,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:30:40,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:30:40,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:30:40,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:30:40,897 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-12-01 15:30:40,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:30:40,920 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2020-12-01 15:30:40,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:30:40,922 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-01 15:30:40,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:30:40,931 INFO L225 Difference]: With dead ends: 63 [2020-12-01 15:30:40,932 INFO L226 Difference]: Without dead ends: 29 [2020-12-01 15:30:40,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:30:40,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-01 15:30:40,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-01 15:30:40,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-01 15:30:40,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-12-01 15:30:41,001 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2020-12-01 15:30:41,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:30:41,002 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-12-01 15:30:41,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:30:41,003 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-12-01 15:30:41,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-01 15:30:41,004 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:30:41,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:30:41,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:30:41,005 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:30:41,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:30:41,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-12-01 15:30:41,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:30:41,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509348072] [2020-12-01 15:30:41,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:30:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:30:41,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:30:41,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509348072] [2020-12-01 15:30:41,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:30:41,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:30:41,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719319660] [2020-12-01 15:30:41,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:30:41,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:30:41,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:30:41,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:30:41,197 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 4 states. [2020-12-01 15:30:41,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:30:41,307 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-12-01 15:30:41,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:30:41,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-01 15:30:41,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:30:41,309 INFO L225 Difference]: With dead ends: 54 [2020-12-01 15:30:41,309 INFO L226 Difference]: Without dead ends: 50 [2020-12-01 15:30:41,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:30:41,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-01 15:30:41,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2020-12-01 15:30:41,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-01 15:30:41,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-12-01 15:30:41,322 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 7 [2020-12-01 15:30:41,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:30:41,323 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-12-01 15:30:41,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:30:41,323 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-12-01 15:30:41,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 15:30:41,324 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:30:41,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:30:41,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:30:41,325 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:30:41,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:30:41,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1186818322, now seen corresponding path program 1 times [2020-12-01 15:30:41,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:30:41,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309883564] [2020-12-01 15:30:41,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:30:41,346 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:30:41,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [423798683] [2020-12-01 15:30:41,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a866559-2016-4cac-8f58-02f6ec228d62/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 [2020-12-01 15:30:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:30:41,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-01 15:30:41,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:30:41,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:30:41,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309883564] [2020-12-01 15:30:41,496 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:30:41,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423798683] [2020-12-01 15:30:41,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:30:41,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 15:30:41,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276334554] [2020-12-01 15:30:41,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:30:41,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:30:41,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:30:41,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:30:41,500 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 6 states. [2020-12-01 15:30:41,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:30:41,665 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2020-12-01 15:30:41,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:30:41,666 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-01 15:30:41,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:30:41,670 INFO L225 Difference]: With dead ends: 51 [2020-12-01 15:30:41,671 INFO L226 Difference]: Without dead ends: 37 [2020-12-01 15:30:41,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:30:41,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-01 15:30:41,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-12-01 15:30:41,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-01 15:30:41,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-12-01 15:30:41,688 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 9 [2020-12-01 15:30:41,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:30:41,688 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-12-01 15:30:41,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:30:41,689 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-12-01 15:30:41,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 15:30:41,690 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:30:41,690 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:30:41,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-01 15:30:41,910 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:30:41,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:30:41,911 INFO L82 PathProgramCache]: Analyzing trace with hash -13364102, now seen corresponding path program 1 times [2020-12-01 15:30:41,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:30:41,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080995155] [2020-12-01 15:30:41,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:30:41,941 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:30:41,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1007006999] [2020-12-01 15:30:41,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a866559-2016-4cac-8f58-02f6ec228d62/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 [2020-12-01 15:30:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:30:42,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-01 15:30:42,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:30:42,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:30:42,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080995155] [2020-12-01 15:30:42,097 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:30:42,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007006999] [2020-12-01 15:30:42,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:30:42,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-01 15:30:42,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948878508] [2020-12-01 15:30:42,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:30:42,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:30:42,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:30:42,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:30:42,102 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 5 states. [2020-12-01 15:30:42,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:30:42,216 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-12-01 15:30:42,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:30:42,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-01 15:30:42,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:30:42,222 INFO L225 Difference]: With dead ends: 61 [2020-12-01 15:30:42,222 INFO L226 Difference]: Without dead ends: 57 [2020-12-01 15:30:42,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:30:42,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-01 15:30:42,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2020-12-01 15:30:42,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-01 15:30:42,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-12-01 15:30:42,234 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 14 [2020-12-01 15:30:42,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:30:42,235 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-12-01 15:30:42,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:30:42,235 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-12-01 15:30:42,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 15:30:42,235 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:30:42,235 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:30:42,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:30:42,436 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:30:42,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:30:42,437 INFO L82 PathProgramCache]: Analyzing trace with hash 42186397, now seen corresponding path program 1 times [2020-12-01 15:30:42,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:30:42,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580986357] [2020-12-01 15:30:42,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:30:42,454 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:30:42,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [69971026] [2020-12-01 15:30:42,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a866559-2016-4cac-8f58-02f6ec228d62/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 [2020-12-01 15:30:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:30:42,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-01 15:30:42,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:30:42,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:30:42,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580986357] [2020-12-01 15:30:42,660 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:30:42,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69971026] [2020-12-01 15:30:42,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:30:42,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-01 15:30:42,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962766927] [2020-12-01 15:30:42,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:30:42,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:30:42,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:30:42,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:30:42,663 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 7 states. [2020-12-01 15:30:42,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:30:42,808 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-12-01 15:30:42,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:30:42,809 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-12-01 15:30:42,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:30:42,810 INFO L225 Difference]: With dead ends: 58 [2020-12-01 15:30:42,810 INFO L226 Difference]: Without dead ends: 44 [2020-12-01 15:30:42,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:30:42,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-01 15:30:42,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-12-01 15:30:42,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-01 15:30:42,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-12-01 15:30:42,827 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 16 [2020-12-01 15:30:42,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:30:42,828 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-12-01 15:30:42,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:30:42,828 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-12-01 15:30:42,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 15:30:42,829 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:30:42,829 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-01 15:30:43,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:30:43,057 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:30:43,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:30:43,058 INFO L82 PathProgramCache]: Analyzing trace with hash 25658831, now seen corresponding path program 2 times [2020-12-01 15:30:43,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:30:43,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164694267] [2020-12-01 15:30:43,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:30:43,071 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:30:43,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [800205124] [2020-12-01 15:30:43,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a866559-2016-4cac-8f58-02f6ec228d62/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 [2020-12-01 15:30:43,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:30:43,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:30:43,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-01 15:30:43,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:30:43,310 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:30:43,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164694267] [2020-12-01 15:30:43,311 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:30:43,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800205124] [2020-12-01 15:30:43,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:30:43,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-01 15:30:43,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810465834] [2020-12-01 15:30:43,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:30:43,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:30:43,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:30:43,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:30:43,316 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 6 states. [2020-12-01 15:30:43,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:30:43,444 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-12-01 15:30:43,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:30:43,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-12-01 15:30:43,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:30:43,445 INFO L225 Difference]: With dead ends: 43 [2020-12-01 15:30:43,445 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:30:43,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:30:43,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:30:43,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:30:43,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:30:43,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:30:43,447 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-12-01 15:30:43,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:30:43,447 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:30:43,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:30:43,448 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:30:43,448 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:30:43,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:30:43,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 15:30:44,262 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-12-01 15:30:44,263 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-12-01 15:30:44,263 INFO L265 CegarLoopResult]: At program point L48(lines 20 49) the Hoare annotation is: true [2020-12-01 15:30:44,263 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-01 15:30:44,263 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-12-01 15:30:44,263 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 15:30:44,263 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 15:30:44,263 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-12-01 15:30:44,264 INFO L262 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-12-01 15:30:44,264 INFO L258 CegarLoopResult]: At program point L12-1(lines 11 17) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= ULTIMATE.start_main_~n~0 2)) (.cse2 (<= 0 ULTIMATE.start_main_~n~0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) .cse3 (= ULTIMATE.start_main_~t~0 1)) (and (= ULTIMATE.start_main_~a~0 1) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) .cse3))) [2020-12-01 15:30:44,264 INFO L262 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-12-01 15:30:44,266 INFO L258 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= ULTIMATE.start_main_~n~0 2)) (.cse2 (<= 0 ULTIMATE.start_main_~n~0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) .cse3 (= ULTIMATE.start_main_~t~0 1)) (and (= ULTIMATE.start_main_~a~0 1) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) .cse3))) [2020-12-01 15:30:44,266 INFO L262 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-12-01 15:30:44,266 INFO L262 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-12-01 15:30:44,266 INFO L258 CegarLoopResult]: At program point L12-5(lines 36 37) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= ULTIMATE.start_main_~n~0 2)) (.cse2 (<= 0 ULTIMATE.start_main_~n~0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) .cse3 (= ULTIMATE.start_main_~t~0 1)) (and (= ULTIMATE.start_main_~a~0 1) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) .cse3))) [2020-12-01 15:30:44,267 INFO L262 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-12-01 15:30:44,267 INFO L258 CegarLoopResult]: At program point L12-7(lines 11 17) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2020-12-01 15:30:44,267 INFO L262 CegarLoopResult]: For program point L12-8(lines 12 15) no Hoare annotation was computed. [2020-12-01 15:30:44,267 INFO L258 CegarLoopResult]: At program point L12-9(lines 11 17) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2020-12-01 15:30:44,267 INFO L262 CegarLoopResult]: For program point L12-10(lines 12 15) no Hoare annotation was computed. [2020-12-01 15:30:44,267 INFO L265 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: true [2020-12-01 15:30:44,267 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 15:30:44,269 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-12-01 15:30:44,269 INFO L262 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-12-01 15:30:44,269 INFO L262 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-12-01 15:30:44,270 INFO L262 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-12-01 15:30:44,270 INFO L262 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-12-01 15:30:44,270 INFO L262 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-12-01 15:30:44,270 INFO L262 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-12-01 15:30:44,270 INFO L262 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-12-01 15:30:44,270 INFO L258 CegarLoopResult]: At program point L30-2(lines 30 42) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~n~0 2)) (.cse1 (<= 0 ULTIMATE.start_main_~n~0)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) .cse2 (= ULTIMATE.start_main_~t~0 1)) (and (= ULTIMATE.start_main_~a~0 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 .cse1 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) .cse2))) [2020-12-01 15:30:44,270 INFO L262 CegarLoopResult]: For program point L30-3(lines 30 42) no Hoare annotation was computed. [2020-12-01 15:30:44,271 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-12-01 15:30:44,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:30:44 BoogieIcfgContainer [2020-12-01 15:30:44,314 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:30:44,315 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:30:44,315 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:30:44,315 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:30:44,315 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:30:40" (3/4) ... [2020-12-01 15:30:44,322 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:30:44,339 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-01 15:30:44,339 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 15:30:44,340 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:30:44,340 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:30:44,417 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5a866559-2016-4cac-8f58-02f6ec228d62/bin/uautomizer/witness.graphml [2020-12-01 15:30:44,417 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:30:44,419 INFO L168 Benchmark]: Toolchain (without parser) took 4719.98 ms. Allocated memory was 81.8 MB in the beginning and 109.1 MB in the end (delta: 27.3 MB). Free memory was 49.9 MB in the beginning and 41.3 MB in the end (delta: 8.7 MB). Peak memory consumption was 35.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:30:44,420 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 81.8 MB. Free memory was 57.8 MB in the beginning and 57.8 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:30:44,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.32 ms. Allocated memory is still 81.8 MB. Free memory was 49.8 MB in the beginning and 60.0 MB in the end (delta: -10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:30:44,423 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.60 ms. Allocated memory is still 81.8 MB. Free memory was 60.0 MB in the beginning and 58.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:30:44,423 INFO L168 Benchmark]: Boogie Preprocessor took 28.46 ms. Allocated memory is still 81.8 MB. Free memory was 58.6 MB in the beginning and 57.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:30:44,424 INFO L168 Benchmark]: RCFGBuilder took 400.86 ms. Allocated memory is still 81.8 MB. Free memory was 57.4 MB in the beginning and 43.2 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-01 15:30:44,424 INFO L168 Benchmark]: TraceAbstraction took 3802.41 ms. Allocated memory was 81.8 MB in the beginning and 109.1 MB in the end (delta: 27.3 MB). Free memory was 42.8 MB in the beginning and 44.4 MB in the end (delta: -1.6 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:30:44,425 INFO L168 Benchmark]: Witness Printer took 102.46 ms. Allocated memory is still 109.1 MB. Free memory was 44.4 MB in the beginning and 41.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:30:44,428 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 81.8 MB. Free memory was 57.8 MB in the beginning and 57.8 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 332.32 ms. Allocated memory is still 81.8 MB. Free memory was 49.8 MB in the beginning and 60.0 MB in the end (delta: -10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.60 ms. Allocated memory is still 81.8 MB. Free memory was 60.0 MB in the beginning and 58.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.46 ms. Allocated memory is still 81.8 MB. Free memory was 58.6 MB in the beginning and 57.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 400.86 ms. Allocated memory is still 81.8 MB. Free memory was 57.4 MB in the beginning and 43.2 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3802.41 ms. Allocated memory was 81.8 MB in the beginning and 109.1 MB in the end (delta: 27.3 MB). Free memory was 42.8 MB in the beginning and 44.4 MB in the end (delta: -1.6 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. * Witness Printer took 102.46 ms. Allocated memory is still 109.1 MB. Free memory was 44.4 MB in the beginning and 41.3 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((a == 1 && 1 == cond) && t == 3) && s == t + 1) || (((1 == cond && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((((1 == cond && n <= 2) && 0 <= n) && s == 1) && a == 0) && cond == 1) && t == 1) || ((((((a == 1 && 1 == cond) && n <= 2) && 0 <= n) && t == 3) && s == t + 1) && cond == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((((n <= 2 && 0 <= n) && s == 1) && a == 0) && cond == 1) && t == 1) || ((((((a == 1 && 1 == cond) && n <= 2) && 0 <= n) && t == 3) && s == t + 1) && cond == 1) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((1 == cond && n <= 2) && 0 <= n) && s == 1) && a == 0) && cond == 1) && t == 1) || ((((((a == 1 && 1 == cond) && n <= 2) && 0 <= n) && t == 3) && s == t + 1) && cond == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((a == 1 && 1 == cond) && t == 3) && s == t + 1) || (((1 == cond && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((((1 == cond && n <= 2) && 0 <= n) && s == 1) && a == 0) && cond == 1) && t == 1) || ((((((a == 1 && 1 == cond) && n <= 2) && 0 <= n) && t == 3) && s == t + 1) && cond == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 118 SDtfs, 96 SDslu, 166 SDs, 0 SdLazy, 230 SolverSat, 71 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 26 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 22 NumberOfFragments, 245 HoareAnnotationTreeSize, 8 FomulaSimplifications, 130 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 120 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 6711 SizeOfPredicates, 19 NumberOfNonLiveVariables, 310 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 4/17 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...