./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound5.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_335d91f1-a16c-4ab8-9be9-ce67d6e30406/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_335d91f1-a16c-4ab8-9be9-ce67d6e30406/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_335d91f1-a16c-4ab8-9be9-ce67d6e30406/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_335d91f1-a16c-4ab8-9be9-ce67d6e30406/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_335d91f1-a16c-4ab8-9be9-ce67d6e30406/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_335d91f1-a16c-4ab8-9be9-ce67d6e30406/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 f1706a7dacfed8e9d4ab240462c989e9d9418c57 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:55:29,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:55:29,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:55:29,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:55:29,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:55:29,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:55:29,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:55:29,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:55:29,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:55:29,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:55:29,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:55:29,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:55:29,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:55:29,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:55:29,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:55:29,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:55:29,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:55:29,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:55:29,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:55:29,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:55:29,480 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:55:29,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:55:29,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:55:29,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:55:29,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:55:29,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:55:29,487 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:55:29,488 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:55:29,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:55:29,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:55:29,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:55:29,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:55:29,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:55:29,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:55:29,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:55:29,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:55:29,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:55:29,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:55:29,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:55:29,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:55:29,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:55:29,505 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_335d91f1-a16c-4ab8-9be9-ce67d6e30406/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:55:29,541 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:55:29,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:55:29,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:55:29,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:55:29,547 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:55:29,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:55:29,547 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:55:29,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:55:29,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:55:29,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:55:29,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:55:29,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:55:29,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:55:29,550 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:55:29,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:55:29,550 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:55:29,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:55:29,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:55:29,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:55:29,551 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:55:29,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:55:29,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:55:29,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:55:29,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:55:29,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:55:29,552 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:55:29,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:55:29,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:55:29,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:55:29,553 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_335d91f1-a16c-4ab8-9be9-ce67d6e30406/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_335d91f1-a16c-4ab8-9be9-ce67d6e30406/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1706a7dacfed8e9d4ab240462c989e9d9418c57 [2020-11-29 23:55:29,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:55:29,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:55:29,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:55:29,838 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:55:29,841 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:55:29,842 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_335d91f1-a16c-4ab8-9be9-ce67d6e30406/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound5.c [2020-11-29 23:55:29,941 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_335d91f1-a16c-4ab8-9be9-ce67d6e30406/bin/uautomizer/data/155441854/4470b182783a443880e158dfed2d0d99/FLAGeceb1babf [2020-11-29 23:55:30,399 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:55:30,400 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_335d91f1-a16c-4ab8-9be9-ce67d6e30406/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound5.c [2020-11-29 23:55:30,407 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_335d91f1-a16c-4ab8-9be9-ce67d6e30406/bin/uautomizer/data/155441854/4470b182783a443880e158dfed2d0d99/FLAGeceb1babf [2020-11-29 23:55:30,757 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_335d91f1-a16c-4ab8-9be9-ce67d6e30406/bin/uautomizer/data/155441854/4470b182783a443880e158dfed2d0d99 [2020-11-29 23:55:30,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:55:30,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:55:30,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:55:30,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:55:30,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:55:30,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:55:30" (1/1) ... [2020-11-29 23:55:30,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@291aa072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:30, skipping insertion in model container [2020-11-29 23:55:30,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:55:30" (1/1) ... [2020-11-29 23:55:30,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:55:30,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:55:31,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:55:31,016 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:55:31,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:55:31,077 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:55:31,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:31 WrapperNode [2020-11-29 23:55:31,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:55:31,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:55:31,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:55:31,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:55:31,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:31" (1/1) ... [2020-11-29 23:55:31,120 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:31" (1/1) ... [2020-11-29 23:55:31,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:55:31,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:55:31,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:55:31,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:55:31,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:31" (1/1) ... [2020-11-29 23:55:31,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:31" (1/1) ... [2020-11-29 23:55:31,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:31" (1/1) ... [2020-11-29 23:55:31,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:31" (1/1) ... [2020-11-29 23:55:31,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:31" (1/1) ... [2020-11-29 23:55:31,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:31" (1/1) ... [2020-11-29 23:55:31,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:31" (1/1) ... [2020-11-29 23:55:31,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:55:31,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:55:31,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:55:31,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:55:31,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_335d91f1-a16c-4ab8-9be9-ce67d6e30406/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 [2020-11-29 23:55:31,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:55:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:55:31,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:55:31,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:55:31,637 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:55:31,637 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-11-29 23:55:31,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:55:31 BoogieIcfgContainer [2020-11-29 23:55:31,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:55:31,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:55:31,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:55:31,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:55:31,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:55:30" (1/3) ... [2020-11-29 23:55:31,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dafc16a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:55:31, skipping insertion in model container [2020-11-29 23:55:31,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:31" (2/3) ... [2020-11-29 23:55:31,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dafc16a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:55:31, skipping insertion in model container [2020-11-29 23:55:31,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:55:31" (3/3) ... [2020-11-29 23:55:31,659 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll_valuebound5.c [2020-11-29 23:55:31,670 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:55:31,673 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-29 23:55:31,690 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 23:55:31,713 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:55:31,713 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:55:31,713 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:55:31,713 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:55:31,713 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:55:31,713 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:55:31,714 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:55:31,714 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:55:31,728 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-29 23:55:31,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 23:55:31,733 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:31,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:31,734 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:55:31,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:31,740 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2020-11-29 23:55:31,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:31,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483922317] [2020-11-29 23:55:31,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:31,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:31,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483922317] [2020-11-29 23:55:31,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:31,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:55:31,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669936004] [2020-11-29 23:55:31,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:55:31,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:31,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:55:31,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:55:31,903 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-29 23:55:31,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:31,920 INFO L93 Difference]: Finished difference Result 63 states and 94 transitions. [2020-11-29 23:55:31,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:55:31,921 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-29 23:55:31,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:31,936 INFO L225 Difference]: With dead ends: 63 [2020-11-29 23:55:31,937 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 23:55:31,939 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 [2020-11-29 23:55:31,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 23:55:31,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-29 23:55:31,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 23:55:31,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-11-29 23:55:31,972 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 13 [2020-11-29 23:55:31,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:31,973 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-11-29 23:55:31,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:55:31,974 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-11-29 23:55:31,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 23:55:31,974 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:31,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:31,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:55:31,975 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:55:31,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:31,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2020-11-29 23:55:31,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:31,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648977815] [2020-11-29 23:55:31,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:32,016 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:55:32,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [103269080] [2020-11-29 23:55:32,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_335d91f1-a16c-4ab8-9be9-ce67d6e30406/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 [2020-11-29 23:55:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:32,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 23:55:32,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:34,290 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:55:40,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:40,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648977815] [2020-11-29 23:55:40,495 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:55:40,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103269080] [2020-11-29 23:55:40,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:40,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:40,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250596894] [2020-11-29 23:55:40,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:40,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:40,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:40,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:40,499 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 4 states. [2020-11-29 23:55:42,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:42,767 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-11-29 23:55:42,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:42,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-29 23:55:42,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:42,770 INFO L225 Difference]: With dead ends: 39 [2020-11-29 23:55:42,770 INFO L226 Difference]: Without dead ends: 37 [2020-11-29 23:55:42,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:42,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-29 23:55:42,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2020-11-29 23:55:42,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 23:55:42,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-11-29 23:55:42,778 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 13 [2020-11-29 23:55:42,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:42,778 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-11-29 23:55:42,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:42,779 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-11-29 23:55:42,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 23:55:42,779 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:42,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:42,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 23:55:42,995 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:55:42,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:42,996 INFO L82 PathProgramCache]: Analyzing trace with hash 2132933875, now seen corresponding path program 1 times [2020-11-29 23:55:42,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:42,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992300936] [2020-11-29 23:55:42,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:43,024 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:55:43,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1934123109] [2020-11-29 23:55:43,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_335d91f1-a16c-4ab8-9be9-ce67d6e30406/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 [2020-11-29 23:55:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:43,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 23:55:43,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:43,123 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:55:43,124 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:55:43,203 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:55:43,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:43,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992300936] [2020-11-29 23:55:43,299 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:55:43,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934123109] [2020-11-29 23:55:43,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:43,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 23:55:43,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962394406] [2020-11-29 23:55:43,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:55:43,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:43,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:55:43,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:55:43,302 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 6 states. [2020-11-29 23:55:54,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:54,905 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-11-29 23:55:54,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:55:54,907 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-29 23:55:54,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:54,908 INFO L225 Difference]: With dead ends: 39 [2020-11-29 23:55:54,908 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 23:55:54,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:55:54,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 23:55:54,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-11-29 23:55:54,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 23:55:54,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-11-29 23:55:54,914 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 16 [2020-11-29 23:55:54,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:54,915 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-11-29 23:55:54,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:55:54,915 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-11-29 23:55:54,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 23:55:54,916 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:54,916 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:55,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:55:55,123 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:55:55,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:55,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1506257506, now seen corresponding path program 1 times [2020-11-29 23:55:55,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:55,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261252934] [2020-11-29 23:55:55,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:55,148 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:55:55,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [843510676] [2020-11-29 23:55:55,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_335d91f1-a16c-4ab8-9be9-ce67d6e30406/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 [2020-11-29 23:55:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:55,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-29 23:55:55,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:55:57,479 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 30 [2020-11-29 23:55:57,484 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-11-29 23:55:57,484 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:56:01,795 WARN L193 SmtUtils]: Spent 4.26 s on a formula simplification that was a NOOP. DAG size: 23 [2020-11-29 23:56:06,030 WARN L193 SmtUtils]: Spent 4.16 s on a formula simplification that was a NOOP. DAG size: 24 [2020-11-29 23:56:06,045 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:56:06,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:06,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261252934] [2020-11-29 23:56:06,192 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:56:06,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843510676] [2020-11-29 23:56:06,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:56:06,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 23:56:06,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219460212] [2020-11-29 23:56:06,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:56:06,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:06,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:56:06,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:56:06,195 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 7 states. [2020-11-29 23:56:13,641 WARN L193 SmtUtils]: Spent 5.26 s on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2020-11-29 23:56:18,809 WARN L193 SmtUtils]: Spent 5.08 s on a formula simplification that was a NOOP. DAG size: 27 [2020-11-29 23:56:25,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:25,343 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2020-11-29 23:56:25,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:56:25,349 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-29 23:56:25,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:25,352 INFO L225 Difference]: With dead ends: 53 [2020-11-29 23:56:25,352 INFO L226 Difference]: Without dead ends: 51 [2020-11-29 23:56:25,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 21.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:56:25,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-29 23:56:25,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 36. [2020-11-29 23:56:25,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 23:56:25,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-11-29 23:56:25,364 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 19 [2020-11-29 23:56:25,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:25,365 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-11-29 23:56:25,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:56:25,365 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-11-29 23:56:25,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 23:56:25,366 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:25,366 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:25,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:56:25,571 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:56:25,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:25,572 INFO L82 PathProgramCache]: Analyzing trace with hash 906879839, now seen corresponding path program 2 times [2020-11-29 23:56:25,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:25,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365898200] [2020-11-29 23:56:25,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:25,586 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:56:25,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [854555399] [2020-11-29 23:56:25,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_335d91f1-a16c-4ab8-9be9-ce67d6e30406/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 [2020-11-29 23:56:25,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 23:56:25,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:56:25,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-29 23:56:25,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:56:29,797 WARN L193 SmtUtils]: Spent 4.05 s on a formula simplification that was a NOOP. DAG size: 30 [2020-11-29 23:56:29,801 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 4, 1] term [2020-11-29 23:56:29,801 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:56:31,978 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 23 [2020-11-29 23:56:34,275 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification that was a NOOP. DAG size: 21 [2020-11-29 23:56:41,225 WARN L193 SmtUtils]: Spent 6.83 s on a formula simplification. DAG size of input: 33 DAG size of output: 26 [2020-11-29 23:56:41,498 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:56:41,633 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:41,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365898200] [2020-11-29 23:56:41,633 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:56:41,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854555399] [2020-11-29 23:56:41,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:56:41,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-29 23:56:41,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549537480] [2020-11-29 23:56:41,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 23:56:41,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:41,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 23:56:41,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:56:41,636 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 9 states. [2020-11-29 23:56:53,427 WARN L193 SmtUtils]: Spent 8.97 s on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2020-11-29 23:57:02,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:57:02,689 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-11-29 23:57:02,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 23:57:02,698 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-11-29 23:57:02,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:57:02,699 INFO L225 Difference]: With dead ends: 62 [2020-11-29 23:57:02,699 INFO L226 Difference]: Without dead ends: 60 [2020-11-29 23:57:02,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-29 23:57:02,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-29 23:57:02,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 45. [2020-11-29 23:57:02,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-29 23:57:02,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-11-29 23:57:02,722 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 22 [2020-11-29 23:57:02,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:57:02,722 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-11-29 23:57:02,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 23:57:02,729 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-11-29 23:57:02,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 23:57:02,731 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:57:02,731 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:57:02,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:57:02,951 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:57:02,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:57:02,952 INFO L82 PathProgramCache]: Analyzing trace with hash -69374211, now seen corresponding path program 1 times [2020-11-29 23:57:02,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:57:02,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306623349] [2020-11-29 23:57:02,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:57:02,962 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:57:02,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851668901] [2020-11-29 23:57:02,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_335d91f1-a16c-4ab8-9be9-ce67d6e30406/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:57:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:57:03,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-29 23:57:03,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:57:23,532 WARN L193 SmtUtils]: Spent 19.61 s on a formula simplification that was a NOOP. DAG size: 37 [2020-11-29 23:57:23,534 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:57:23,534 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:57:36,078 WARN L193 SmtUtils]: Spent 8.40 s on a formula simplification that was a NOOP. DAG size: 30 [2020-11-29 23:57:54,801 WARN L193 SmtUtils]: Spent 6.33 s on a formula simplification that was a NOOP. DAG size: 33 [2020-11-29 23:57:54,816 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:57:59,179 WARN L193 SmtUtils]: Spent 4.32 s on a formula simplification. DAG size of input: 31 DAG size of output: 25 [2020-11-29 23:58:01,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:01,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306623349] [2020-11-29 23:58:01,428 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:58:01,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851668901] [2020-11-29 23:58:01,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:58:01,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 23:58:01,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633595093] [2020-11-29 23:58:01,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:58:01,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:01,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:58:01,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=20, Unknown=9, NotChecked=0, Total=42 [2020-11-29 23:58:01,445 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 7 states. [2020-11-29 23:58:35,009 WARN L193 SmtUtils]: Spent 16.90 s on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2020-11-29 23:59:05,341 WARN L193 SmtUtils]: Spent 6.53 s on a formula simplification that was a NOOP. DAG size: 35 [2020-11-29 23:59:31,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:59:31,112 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2020-11-29 23:59:31,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:59:31,206 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-11-29 23:59:31,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:59:31,207 INFO L225 Difference]: With dead ends: 63 [2020-11-29 23:59:31,207 INFO L226 Difference]: Without dead ends: 61 [2020-11-29 23:59:31,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 86.6s TimeCoverageRelationStatistics Valid=23, Invalid=36, Unknown=13, NotChecked=0, Total=72 [2020-11-29 23:59:31,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-29 23:59:31,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 45. [2020-11-29 23:59:31,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-29 23:59:31,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-11-29 23:59:31,225 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 22 [2020-11-29 23:59:31,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:59:31,226 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-11-29 23:59:31,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:59:31,226 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-11-29 23:59:31,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 23:59:31,227 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:59:31,227 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:59:31,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-29 23:59:31,431 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:59:31,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:31,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1518924286, now seen corresponding path program 3 times [2020-11-29 23:59:31,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:59:31,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356921002] [2020-11-29 23:59:31,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:59:31,441 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:59:31,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [455422343] [2020-11-29 23:59:31,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_335d91f1-a16c-4ab8-9be9-ce67d6e30406/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:59:31,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 23:59:31,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:59:31,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 48 conjunts are in the unsatisfiable core [2020-11-29 23:59:31,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:59:31,696 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-29 23:59:31,696 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:59:31,746 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-29 23:59:31,747 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:59:32,031 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-11-29 23:59:32,034 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:59:32,035 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:59:32,219 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2020-11-29 23:59:33,414 WARN L193 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 23 [2020-11-29 23:59:33,417 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:59:33,417 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:59:33,851 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-11-29 23:59:34,515 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-11-29 23:59:39,046 WARN L193 SmtUtils]: Spent 3.54 s on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2020-11-29 23:59:39,801 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-11-29 23:59:40,678 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-11-29 23:59:41,684 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-11-29 23:59:48,584 WARN L193 SmtUtils]: Spent 4.22 s on a formula simplification that was a NOOP. DAG size: 47 [2020-11-29 23:59:48,587 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:59:48,587 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:59:58,909 WARN L193 SmtUtils]: Spent 7.47 s on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2020-11-30 00:00:09,621 WARN L193 SmtUtils]: Spent 5.36 s on a formula simplification that was a NOOP. DAG size: 40 [2020-11-30 00:00:09,705 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:00:09,712 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:00:09,722 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:00:09,729 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:00:09,739 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:00:09,753 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:00:09,764 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:00:09,776 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:00:09,783 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:00:26,902 WARN L193 SmtUtils]: Spent 17.10 s on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-11-30 00:00:28,633 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-30 00:00:28,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356921002] [2020-11-30 00:00:28,633 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:00:28,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455422343] [2020-11-30 00:00:28,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:00:28,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-11-30 00:00:28,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278594312] [2020-11-30 00:00:28,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-30 00:00:28,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:00:28,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-30 00:00:28,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2020-11-30 00:00:28,636 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 19 states. [2020-11-30 00:00:30,141 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 16 [2020-11-30 00:00:31,444 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 18 [2020-11-30 00:00:33,834 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 61 DAG size of output: 38 [2020-11-30 00:00:37,185 WARN L193 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-11-30 00:00:40,016 WARN L193 SmtUtils]: Spent 2.42 s on a formula simplification. DAG size of input: 66 DAG size of output: 42 [2020-11-30 00:01:04,396 WARN L193 SmtUtils]: Spent 20.43 s on a formula simplification. DAG size of input: 80 DAG size of output: 48 [2020-11-30 00:01:38,011 WARN L193 SmtUtils]: Spent 21.72 s on a formula simplification. DAG size of input: 83 DAG size of output: 51 [2020-11-30 00:02:11,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:02:11,662 INFO L93 Difference]: Finished difference Result 81 states and 96 transitions. [2020-11-30 00:02:11,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-30 00:02:11,674 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 25 [2020-11-30 00:02:11,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:02:11,674 INFO L225 Difference]: With dead ends: 81 [2020-11-30 00:02:11,674 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:02:11,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 93.1s TimeCoverageRelationStatistics Valid=196, Invalid=560, Unknown=0, NotChecked=0, Total=756 [2020-11-30 00:02:11,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:02:11,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:02:11,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:02:11,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:02:11,677 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-11-30 00:02:11,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:02:11,677 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:02:11,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-30 00:02:11,677 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:02:11,677 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:02:11,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:02:11,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:02:34,597 WARN L193 SmtUtils]: Spent 22.50 s on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-11-30 00:02:59,507 WARN L193 SmtUtils]: Spent 24.91 s on a formula simplification. DAG size of input: 75 DAG size of output: 55 [2020-11-30 00:03:19,190 WARN L193 SmtUtils]: Spent 19.68 s on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-11-30 00:04:29,077 WARN L193 SmtUtils]: Spent 1.16 m on a formula simplification. DAG size of input: 90 DAG size of output: 55 [2020-11-30 00:04:56,979 WARN L193 SmtUtils]: Spent 27.90 s on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-11-30 00:04:56,982 INFO L274 CegarLoopResult]: For program point L35-2(lines 35 55) no Hoare annotation was computed. [2020-11-30 00:04:56,982 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 00:04:56,982 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:04:56,982 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:04:56,982 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-11-30 00:04:56,982 INFO L270 CegarLoopResult]: At program point L12-1(lines 37 38) the Hoare annotation is: (let ((.cse4 (div (+ (* ULTIMATE.start_main_~u~0 (- 1)) 1) (- 2)))) (let ((.cse0 (< (+ (* .cse4 .cse4) 1) (+ ULTIMATE.start_main_~A~0 (* 2 .cse4)))) (.cse1 (= (+ (* ULTIMATE.start_main_~v~0 2) (* ULTIMATE.start_main_~u~0 ULTIMATE.start_main_~u~0)) (+ (* ULTIMATE.start_main_~u~0 2) (* ULTIMATE.start_main_~A~0 4) (* ULTIMATE.start_main_~r~0 4) (* ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~v~0)))) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (< (+ (* ULTIMATE.start_main_~R~0 ULTIMATE.start_main_~R~0) 1) (+ (* 2 ULTIMATE.start_main_~R~0) ULTIMATE.start_main_~A~0))) (.cse6 (<= 0 ULTIMATE.start_main_~R~0)) (.cse5 (= (mod ULTIMATE.start_main_~A~0 2) 1)) (.cse7 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse8 (<= ULTIMATE.start_main_~A~0 5))) (or (and .cse0 .cse1 .cse2 .cse3 (<= 0 .cse4) .cse5 .cse6 .cse7 .cse8 (= ULTIMATE.start_main_~v~0 1)) (and .cse0 (= (mod (+ ULTIMATE.start_main_~u~0 1) (- 2)) 0) .cse1 (< 2 (+ ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~r~0)) .cse2 .cse3 .cse6 .cse5 .cse7 .cse8)))) [2020-11-30 00:04:56,983 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-30 00:04:56,983 INFO L270 CegarLoopResult]: At program point L12-3(lines 42 43) the Hoare annotation is: (let ((.cse4 (div (+ (* ULTIMATE.start_main_~u~0 (- 1)) 1) (- 2)))) (let ((.cse9 (* .cse4 .cse4))) (let ((.cse0 (< (+ .cse9 1) (+ ULTIMATE.start_main_~A~0 (* 2 .cse4)))) (.cse1 (= (+ (* ULTIMATE.start_main_~v~0 2) (* ULTIMATE.start_main_~u~0 ULTIMATE.start_main_~u~0)) (+ (* ULTIMATE.start_main_~u~0 2) (* ULTIMATE.start_main_~A~0 4) (* ULTIMATE.start_main_~r~0 4) (* ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~v~0)))) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (< (+ (* ULTIMATE.start_main_~R~0 ULTIMATE.start_main_~R~0) 1) (+ (* 2 ULTIMATE.start_main_~R~0) ULTIMATE.start_main_~A~0))) (.cse6 (<= 0 ULTIMATE.start_main_~R~0)) (.cse5 (= (mod ULTIMATE.start_main_~A~0 2) 1)) (.cse7 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse8 (<= ULTIMATE.start_main_~A~0 5))) (or (and .cse0 .cse1 .cse2 .cse3 (<= 0 .cse4) .cse5 .cse6 .cse7 .cse8 (not (= ULTIMATE.start_main_~A~0 .cse9)) (= ULTIMATE.start_main_~v~0 1)) (and .cse0 (= (mod (+ ULTIMATE.start_main_~u~0 1) (- 2)) 0) .cse1 (< 2 (+ ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~r~0)) .cse2 .cse3 .cse6 .cse5 .cse7 .cse8))))) [2020-11-30 00:04:56,983 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-11-30 00:04:56,983 INFO L270 CegarLoopResult]: At program point L12-5(lines 50 51) the Hoare annotation is: (let ((.cse4 (div (+ (* ULTIMATE.start_main_~u~0 (- 1)) 1) (- 2)))) (let ((.cse9 (* .cse4 .cse4))) (let ((.cse0 (< (+ .cse9 1) (+ ULTIMATE.start_main_~A~0 (* 2 .cse4)))) (.cse1 (= (+ (* ULTIMATE.start_main_~v~0 2) (* ULTIMATE.start_main_~u~0 ULTIMATE.start_main_~u~0)) (+ (* ULTIMATE.start_main_~u~0 2) (* ULTIMATE.start_main_~A~0 4) (* ULTIMATE.start_main_~r~0 4) (* ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~v~0)))) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (< (+ (* ULTIMATE.start_main_~R~0 ULTIMATE.start_main_~R~0) 1) (+ (* 2 ULTIMATE.start_main_~R~0) ULTIMATE.start_main_~A~0))) (.cse6 (<= 0 ULTIMATE.start_main_~R~0)) (.cse5 (= (mod ULTIMATE.start_main_~A~0 2) 1)) (.cse7 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse8 (<= ULTIMATE.start_main_~A~0 5))) (or (and .cse0 .cse1 .cse2 .cse3 (<= 0 .cse4) .cse5 .cse6 .cse7 .cse8 (not (= ULTIMATE.start_main_~A~0 .cse9)) (= ULTIMATE.start_main_~v~0 1)) (and .cse0 (= (mod (+ ULTIMATE.start_main_~u~0 1) (- 2)) 0) .cse1 (< 2 (+ ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~r~0)) .cse2 .cse3 .cse6 .cse5 .cse7 .cse8))))) [2020-11-30 00:04:56,983 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-11-30 00:04:56,983 INFO L277 CegarLoopResult]: At program point L12-7(lines 11 17) the Hoare annotation is: true [2020-11-30 00:04:56,984 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 00:04:56,984 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-30 00:04:56,984 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-11-30 00:04:56,984 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-11-30 00:04:56,984 INFO L274 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-11-30 00:04:56,984 INFO L274 CegarLoopResult]: For program point L48-1(lines 35 55) no Hoare annotation was computed. [2020-11-30 00:04:56,984 INFO L270 CegarLoopResult]: At program point L48-2(lines 35 55) the Hoare annotation is: (let ((.cse4 (div (+ (* ULTIMATE.start_main_~u~0 (- 1)) 1) (- 2)))) (let ((.cse2 (* .cse4 .cse4))) (let ((.cse0 (< (+ .cse2 1) (+ ULTIMATE.start_main_~A~0 (* 2 .cse4)))) (.cse1 (= (mod (+ ULTIMATE.start_main_~u~0 1) (- 2)) 0)) (.cse3 (< (+ (* ULTIMATE.start_main_~R~0 ULTIMATE.start_main_~R~0) 1) (+ (* 2 ULTIMATE.start_main_~R~0) ULTIMATE.start_main_~A~0))) (.cse5 (<= 0 ULTIMATE.start_main_~R~0)) (.cse6 (= (mod ULTIMATE.start_main_~A~0 2) 1)) (.cse7 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse8 (<= ULTIMATE.start_main_~A~0 5))) (or (and .cse0 .cse1 (= .cse2 (+ ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) .cse3 (<= 0 .cse4) .cse5 .cse6 .cse7 .cse8 (= ULTIMATE.start_main_~v~0 1)) (and .cse0 .cse1 (= (+ (* ULTIMATE.start_main_~v~0 2) (* ULTIMATE.start_main_~u~0 ULTIMATE.start_main_~u~0)) (+ (* ULTIMATE.start_main_~u~0 2) (* ULTIMATE.start_main_~A~0 4) (* ULTIMATE.start_main_~r~0 4) (* ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~v~0))) (< 2 (+ ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~r~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse3 .cse5 .cse6 .cse7 .cse8))))) [2020-11-30 00:04:56,984 INFO L270 CegarLoopResult]: At program point L40-2(lines 40 46) the Hoare annotation is: (let ((.cse4 (div (+ (* ULTIMATE.start_main_~u~0 (- 1)) 1) (- 2)))) (let ((.cse9 (* .cse4 .cse4))) (let ((.cse0 (< (+ .cse9 1) (+ ULTIMATE.start_main_~A~0 (* 2 .cse4)))) (.cse1 (= (+ (* ULTIMATE.start_main_~v~0 2) (* ULTIMATE.start_main_~u~0 ULTIMATE.start_main_~u~0)) (+ (* ULTIMATE.start_main_~u~0 2) (* ULTIMATE.start_main_~A~0 4) (* ULTIMATE.start_main_~r~0 4) (* ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~v~0)))) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (< (+ (* ULTIMATE.start_main_~R~0 ULTIMATE.start_main_~R~0) 1) (+ (* 2 ULTIMATE.start_main_~R~0) ULTIMATE.start_main_~A~0))) (.cse6 (<= 0 ULTIMATE.start_main_~R~0)) (.cse5 (= (mod ULTIMATE.start_main_~A~0 2) 1)) (.cse7 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse8 (<= ULTIMATE.start_main_~A~0 5))) (or (and .cse0 .cse1 .cse2 .cse3 (<= 0 .cse4) .cse5 .cse6 .cse7 .cse8 (not (= ULTIMATE.start_main_~A~0 .cse9)) (= ULTIMATE.start_main_~v~0 1)) (and .cse0 (= (mod (+ ULTIMATE.start_main_~u~0 1) (- 2)) 0) .cse1 (< 2 (+ ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~r~0)) .cse2 .cse3 .cse6 .cse5 .cse7 .cse8))))) [2020-11-30 00:04:56,984 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:04:56,985 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 00:04:56,985 INFO L274 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-11-30 00:04:56,985 INFO L274 CegarLoopResult]: For program point L8-1(lines 8 10) no Hoare annotation was computed. [2020-11-30 00:04:56,986 INFO L274 CegarLoopResult]: For program point L8-2(lines 8 10) no Hoare annotation was computed. [2020-11-30 00:04:56,986 INFO L274 CegarLoopResult]: For program point L8-3(lines 8 10) no Hoare annotation was computed. [2020-11-30 00:04:56,986 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:04:56,986 INFO L277 CegarLoopResult]: At program point L58(lines 19 59) the Hoare annotation is: true [2020-11-30 00:04:56,986 INFO L274 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-11-30 00:04:56,986 INFO L274 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-11-30 00:04:56,986 INFO L274 CegarLoopResult]: For program point L9-4(line 9) no Hoare annotation was computed. [2020-11-30 00:04:56,986 INFO L274 CegarLoopResult]: For program point L9-6(line 9) no Hoare annotation was computed. [2020-11-30 00:04:56,986 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 00:04:57,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:04:57 BoogieIcfgContainer [2020-11-30 00:04:57,013 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:04:57,014 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:04:57,014 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:04:57,014 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:04:57,015 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:55:31" (3/4) ... [2020-11-30 00:04:57,018 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:04:57,029 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-30 00:04:57,029 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:04:57,029 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:04:57,030 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:04:57,108 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_335d91f1-a16c-4ab8-9be9-ce67d6e30406/bin/uautomizer/witness.graphml [2020-11-30 00:04:57,108 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:04:57,109 INFO L168 Benchmark]: Toolchain (without parser) took 566348.02 ms. Allocated memory is still 109.1 MB. Free memory was 78.9 MB in the beginning and 42.9 MB in the end (delta: 36.0 MB). Peak memory consumption was 35.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:57,109 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 79.7 MB. Free memory was 42.2 MB in the beginning and 42.1 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:04:57,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.97 ms. Allocated memory is still 109.1 MB. Free memory was 78.7 MB in the beginning and 86.1 MB in the end (delta: -7.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:57,110 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.36 ms. Allocated memory is still 109.1 MB. Free memory was 86.1 MB in the beginning and 84.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:57,111 INFO L168 Benchmark]: Boogie Preprocessor took 48.67 ms. Allocated memory is still 109.1 MB. Free memory was 84.4 MB in the beginning and 83.5 MB in the end (delta: 913.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:04:57,111 INFO L168 Benchmark]: RCFGBuilder took 430.81 ms. Allocated memory is still 109.1 MB. Free memory was 83.1 MB in the beginning and 68.0 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:57,111 INFO L168 Benchmark]: TraceAbstraction took 565361.34 ms. Allocated memory is still 109.1 MB. Free memory was 67.7 MB in the beginning and 46.1 MB in the end (delta: 21.6 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:57,112 INFO L168 Benchmark]: Witness Printer took 94.38 ms. Allocated memory is still 109.1 MB. Free memory was 46.1 MB in the beginning and 42.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:57,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 79.7 MB. Free memory was 42.2 MB in the beginning and 42.1 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 317.97 ms. Allocated memory is still 109.1 MB. Free memory was 78.7 MB in the beginning and 86.1 MB in the end (delta: -7.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.36 ms. Allocated memory is still 109.1 MB. Free memory was 86.1 MB in the beginning and 84.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.67 ms. Allocated memory is still 109.1 MB. Free memory was 84.4 MB in the beginning and 83.5 MB in the end (delta: 913.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 430.81 ms. Allocated memory is still 109.1 MB. Free memory was 83.1 MB in the beginning and 68.0 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 565361.34 ms. Allocated memory is still 109.1 MB. Free memory was 67.7 MB in the beginning and 46.1 MB in the end (delta: 21.6 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. * Witness Printer took 94.38 ms. Allocated memory is still 109.1 MB. Free memory was 46.1 MB in the beginning and 42.9 MB in the end (delta: 3.1 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: 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 4 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((((((u * -1 + 1) / -2 * ((u * -1 + 1) / -2) + 1 < A + 2 * ((u * -1 + 1) / -2) && v * 2 + u * u == u * 2 + A * 4 + r * 4 + v * v) && 1 == cond) && R * R + 1 < 2 * R + A) && 0 <= (u * -1 + 1) / -2) && A % 2 == 1) && 0 <= R) && cond == 1) && A <= 5) && v == 1) || ((((((((((u * -1 + 1) / -2 * ((u * -1 + 1) / -2) + 1 < A + 2 * ((u * -1 + 1) / -2) && (u + 1) % -2 == 0) && v * 2 + u * u == u * 2 + A * 4 + r * 4 + v * v) && 2 < v + r) && 1 == cond) && R * R + 1 < 2 * R + A) && 0 <= R) && A % 2 == 1) && cond == 1) && A <= 5) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((((((u * -1 + 1) / -2 * ((u * -1 + 1) / -2) + 1 < A + 2 * ((u * -1 + 1) / -2) && v * 2 + u * u == u * 2 + A * 4 + r * 4 + v * v) && 1 == cond) && R * R + 1 < 2 * R + A) && 0 <= (u * -1 + 1) / -2) && A % 2 == 1) && 0 <= R) && cond == 1) && A <= 5) && !(A == (u * -1 + 1) / -2 * ((u * -1 + 1) / -2))) && v == 1) || ((((((((((u * -1 + 1) / -2 * ((u * -1 + 1) / -2) + 1 < A + 2 * ((u * -1 + 1) / -2) && (u + 1) % -2 == 0) && v * 2 + u * u == u * 2 + A * 4 + r * 4 + v * v) && 2 < v + r) && 1 == cond) && R * R + 1 < 2 * R + A) && 0 <= R) && A % 2 == 1) && cond == 1) && A <= 5) - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: (((((((((((u * -1 + 1) / -2 * ((u * -1 + 1) / -2) + 1 < A + 2 * ((u * -1 + 1) / -2) && v * 2 + u * u == u * 2 + A * 4 + r * 4 + v * v) && 1 == cond) && R * R + 1 < 2 * R + A) && 0 <= (u * -1 + 1) / -2) && A % 2 == 1) && 0 <= R) && cond == 1) && A <= 5) && !(A == (u * -1 + 1) / -2 * ((u * -1 + 1) / -2))) && v == 1) || ((((((((((u * -1 + 1) / -2 * ((u * -1 + 1) / -2) + 1 < A + 2 * ((u * -1 + 1) / -2) && (u + 1) % -2 == 0) && v * 2 + u * u == u * 2 + A * 4 + r * 4 + v * v) && 2 < v + r) && 1 == cond) && R * R + 1 < 2 * R + A) && 0 <= R) && A % 2 == 1) && cond == 1) && A <= 5) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((u * -1 + 1) / -2 * ((u * -1 + 1) / -2) + 1 < A + 2 * ((u * -1 + 1) / -2) && (u + 1) % -2 == 0) && (u * -1 + 1) / -2 * ((u * -1 + 1) / -2) == A + r) && R * R + 1 < 2 * R + A) && 0 <= (u * -1 + 1) / -2) && 0 <= R) && A % 2 == 1) && cond == 1) && A <= 5) && v == 1) || ((((((((((u * -1 + 1) / -2 * ((u * -1 + 1) / -2) + 1 < A + 2 * ((u * -1 + 1) / -2) && (u + 1) % -2 == 0) && v * 2 + u * u == u * 2 + A * 4 + r * 4 + v * v) && 2 < v + r) && 1 == cond) && R * R + 1 < 2 * R + A) && 0 <= R) && A % 2 == 1) && cond == 1) && A <= 5) - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (((((((((((u * -1 + 1) / -2 * ((u * -1 + 1) / -2) + 1 < A + 2 * ((u * -1 + 1) / -2) && v * 2 + u * u == u * 2 + A * 4 + r * 4 + v * v) && 1 == cond) && R * R + 1 < 2 * R + A) && 0 <= (u * -1 + 1) / -2) && A % 2 == 1) && 0 <= R) && cond == 1) && A <= 5) && !(A == (u * -1 + 1) / -2 * ((u * -1 + 1) / -2))) && v == 1) || ((((((((((u * -1 + 1) / -2 * ((u * -1 + 1) / -2) + 1 < A + 2 * ((u * -1 + 1) / -2) && (u + 1) % -2 == 0) && v * 2 + u * u == u * 2 + A * 4 + r * 4 + v * v) && 2 < v + r) && 1 == cond) && R * R + 1 < 2 * R + A) && 0 <= R) && A % 2 == 1) && cond == 1) && A <= 5) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 400.1s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 246.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 165.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 118 SDtfs, 304 SDslu, 216 SDs, 0 SdLazy, 532 SolverSat, 197 SolverUnsat, 42 SolverUnknown, 0 SolverNotchecked, 136.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 226.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=5, 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, 7 MinimizatonAttempts, 54 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 38 NumberOfFragments, 973 HoareAnnotationTreeSize, 7 FomulaSimplifications, 11065 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 1190 FormulaSimplificationTreeSizeReductionInter, 164.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 150.9s InterpolantComputationTime, 130 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 123 ConstructedInterpolants, 17 QuantifiedInterpolants, 51288 SizeOfPredicates, 65 NumberOfNonLiveVariables, 529 ConjunctsInSsa, 136 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 12/26 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...