./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound10.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_5beb1719-bdd4-41ef-9574-0779bb3930fe/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5beb1719-bdd4-41ef-9574-0779bb3930fe/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5beb1719-bdd4-41ef-9574-0779bb3930fe/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5beb1719-bdd4-41ef-9574-0779bb3930fe/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5beb1719-bdd4-41ef-9574-0779bb3930fe/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5beb1719-bdd4-41ef-9574-0779bb3930fe/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 cbc881c594b7bbae672c83bbb2c629f38e40bf15 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 20:23:02,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:23:02,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:23:02,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:23:02,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:23:02,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:23:02,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:23:02,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:23:02,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:23:02,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:23:02,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:23:02,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:23:02,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:23:02,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:23:02,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:23:02,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:23:02,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:23:02,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:23:02,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:23:02,591 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:23:02,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:23:02,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:23:02,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:23:02,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:23:02,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:23:02,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:23:02,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:23:02,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:23:02,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:23:02,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:23:02,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:23:02,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:23:02,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:23:02,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:23:02,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:23:02,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:23:02,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:23:02,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:23:02,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:23:02,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:23:02,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:23:02,617 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5beb1719-bdd4-41ef-9574-0779bb3930fe/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:23:02,642 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:23:02,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:23:02,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:23:02,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:23:02,646 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:23:02,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:23:02,647 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:23:02,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:23:02,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:23:02,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:23:02,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:23:02,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:23:02,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:23:02,649 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:23:02,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:23:02,650 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:23:02,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:23:02,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:23:02,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:23:02,651 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:23:02,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:23:02,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:23:02,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:23:02,652 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:23:02,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:23:02,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:23:02,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:23:02,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:23:02,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:23:02,653 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_5beb1719-bdd4-41ef-9574-0779bb3930fe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5beb1719-bdd4-41ef-9574-0779bb3930fe/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbc881c594b7bbae672c83bbb2c629f38e40bf15 [2020-11-29 20:23:02,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:23:03,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:23:03,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:23:03,040 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:23:03,042 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:23:03,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5beb1719-bdd4-41ef-9574-0779bb3930fe/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound10.c [2020-11-29 20:23:03,156 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5beb1719-bdd4-41ef-9574-0779bb3930fe/bin/uautomizer/data/f70543176/4e64cbcb861b43d88eb3569ed236363a/FLAGa16df1755 [2020-11-29 20:23:03,774 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:23:03,775 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5beb1719-bdd4-41ef-9574-0779bb3930fe/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound10.c [2020-11-29 20:23:03,790 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5beb1719-bdd4-41ef-9574-0779bb3930fe/bin/uautomizer/data/f70543176/4e64cbcb861b43d88eb3569ed236363a/FLAGa16df1755 [2020-11-29 20:23:04,130 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5beb1719-bdd4-41ef-9574-0779bb3930fe/bin/uautomizer/data/f70543176/4e64cbcb861b43d88eb3569ed236363a [2020-11-29 20:23:04,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:23:04,135 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:23:04,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:23:04,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:23:04,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:23:04,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:23:04" (1/1) ... [2020-11-29 20:23:04,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74c284b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:23:04, skipping insertion in model container [2020-11-29 20:23:04,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:23:04" (1/1) ... [2020-11-29 20:23:04,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:23:04,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:23:04,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:23:04,405 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:23:04,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:23:04,470 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:23:04,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:23:04 WrapperNode [2020-11-29 20:23:04,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:23:04,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:23:04,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:23:04,476 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:23:04,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:23:04" (1/1) ... [2020-11-29 20:23:04,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:23:04" (1/1) ... [2020-11-29 20:23:04,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:23:04,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:23:04,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:23:04,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:23:04,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:23:04" (1/1) ... [2020-11-29 20:23:04,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:23:04" (1/1) ... [2020-11-29 20:23:04,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:23:04" (1/1) ... [2020-11-29 20:23:04,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:23:04" (1/1) ... [2020-11-29 20:23:04,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:23:04" (1/1) ... [2020-11-29 20:23:04,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:23:04" (1/1) ... [2020-11-29 20:23:04,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:23:04" (1/1) ... [2020-11-29 20:23:04,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:23:04,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:23:04,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:23:04,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:23:04,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:23:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5beb1719-bdd4-41ef-9574-0779bb3930fe/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 20:23:04,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:23:04,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:23:04,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:23:04,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:23:05,206 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:23:05,207 INFO L298 CfgBuilder]: Removed 29 assume(true) statements. [2020-11-29 20:23:05,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:23:05 BoogieIcfgContainer [2020-11-29 20:23:05,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:23:05,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:23:05,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:23:05,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:23:05,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:23:04" (1/3) ... [2020-11-29 20:23:05,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3036751d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:23:05, skipping insertion in model container [2020-11-29 20:23:05,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:23:04" (2/3) ... [2020-11-29 20:23:05,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3036751d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:23:05, skipping insertion in model container [2020-11-29 20:23:05,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:23:05" (3/3) ... [2020-11-29 20:23:05,222 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound10.c [2020-11-29 20:23:05,234 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:23:05,238 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 20:23:05,252 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 20:23:05,297 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:23:05,297 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:23:05,297 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:23:05,298 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:23:05,298 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:23:05,303 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:23:05,304 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:23:05,304 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:23:05,320 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-11-29 20:23:05,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 20:23:05,325 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:23:05,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:23:05,326 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:23:05,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:23:05,333 INFO L82 PathProgramCache]: Analyzing trace with hash 891015143, now seen corresponding path program 1 times [2020-11-29 20:23:05,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:23:05,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094971928] [2020-11-29 20:23:05,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:23:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:23:05,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:23:05,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094971928] [2020-11-29 20:23:05,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:23:05,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:23:05,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570731871] [2020-11-29 20:23:05,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:23:05,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:23:05,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:23:05,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:23:05,545 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-11-29 20:23:05,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:23:05,568 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-11-29 20:23:05,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:23:05,570 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-29 20:23:05,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:23:05,581 INFO L225 Difference]: With dead ends: 62 [2020-11-29 20:23:05,581 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 20:23:05,586 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 20:23:05,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 20:23:05,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-29 20:23:05,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-29 20:23:05,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-11-29 20:23:05,651 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-11-29 20:23:05,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:23:05,652 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-11-29 20:23:05,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:23:05,653 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-11-29 20:23:05,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 20:23:05,653 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:23:05,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:23:05,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:23:05,655 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:23:05,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:23:05,658 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-11-29 20:23:05,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:23:05,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058665489] [2020-11-29 20:23:05,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:23:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:23:05,821 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 20:23:05,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058665489] [2020-11-29 20:23:05,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:23:05,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:23:05,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401197822] [2020-11-29 20:23:05,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:23:05,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:23:05,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:23:05,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:23:05,824 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 4 states. [2020-11-29 20:23:06,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:23:06,049 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2020-11-29 20:23:06,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:23:06,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-29 20:23:06,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:23:06,052 INFO L225 Difference]: With dead ends: 55 [2020-11-29 20:23:06,052 INFO L226 Difference]: Without dead ends: 51 [2020-11-29 20:23:06,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:23:06,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-29 20:23:06,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2020-11-29 20:23:06,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 20:23:06,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-11-29 20:23:06,070 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 6 [2020-11-29 20:23:06,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:23:06,071 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-11-29 20:23:06,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:23:06,072 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-11-29 20:23:06,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:23:06,073 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:23:06,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:23:06,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:23:06,076 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:23:06,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:23:06,077 INFO L82 PathProgramCache]: Analyzing trace with hash 179688749, now seen corresponding path program 1 times [2020-11-29 20:23:06,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:23:06,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676264540] [2020-11-29 20:23:06,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:23:06,113 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:23:06,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1109111780] [2020-11-29 20:23:06,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5beb1719-bdd4-41ef-9574-0779bb3930fe/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 20:23:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:23:06,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 20:23:06,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:23:06,322 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 20:23:06,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676264540] [2020-11-29 20:23:06,323 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:23:06,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109111780] [2020-11-29 20:23:06,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:23:06,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:23:06,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204412575] [2020-11-29 20:23:06,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:23:06,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:23:06,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:23:06,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:23:06,325 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 4 states. [2020-11-29 20:23:06,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:23:06,450 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2020-11-29 20:23:06,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:23:06,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 20:23:06,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:23:06,452 INFO L225 Difference]: With dead ends: 50 [2020-11-29 20:23:06,452 INFO L226 Difference]: Without dead ends: 46 [2020-11-29 20:23:06,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:23:06,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-29 20:23:06,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-11-29 20:23:06,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 20:23:06,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-11-29 20:23:06,462 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 8 [2020-11-29 20:23:06,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:23:06,463 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-11-29 20:23:06,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:23:06,463 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-11-29 20:23:06,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:23:06,464 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:23:06,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:23:06,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-29 20:23:06,691 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:23:06,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:23:06,691 INFO L82 PathProgramCache]: Analyzing trace with hash 882382672, now seen corresponding path program 1 times [2020-11-29 20:23:06,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:23:06,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665608160] [2020-11-29 20:23:06,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:23:06,706 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:23:06,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2029814619] [2020-11-29 20:23:06,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5beb1719-bdd4-41ef-9574-0779bb3930fe/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 20:23:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:23:06,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 20:23:06,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:23:06,800 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 20:23:06,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665608160] [2020-11-29 20:23:06,800 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:23:06,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029814619] [2020-11-29 20:23:06,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:23:06,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:23:06,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759942450] [2020-11-29 20:23:06,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:23:06,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:23:06,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:23:06,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:23:06,802 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 4 states. [2020-11-29 20:23:07,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:23:07,030 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2020-11-29 20:23:07,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:23:07,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 20:23:07,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:23:07,032 INFO L225 Difference]: With dead ends: 50 [2020-11-29 20:23:07,032 INFO L226 Difference]: Without dead ends: 39 [2020-11-29 20:23:07,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:23:07,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-29 20:23:07,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-11-29 20:23:07,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 20:23:07,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-11-29 20:23:07,046 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 10 [2020-11-29 20:23:07,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:23:07,046 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-11-29 20:23:07,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:23:07,047 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-11-29 20:23:07,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 20:23:07,047 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:23:07,048 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:23:07,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:23:07,279 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:23:07,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:23:07,279 INFO L82 PathProgramCache]: Analyzing trace with hash 2079810332, now seen corresponding path program 1 times [2020-11-29 20:23:07,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:23:07,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007663585] [2020-11-29 20:23:07,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:23:07,288 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:23:07,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1508810855] [2020-11-29 20:23:07,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5beb1719-bdd4-41ef-9574-0779bb3930fe/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 20:23:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:23:07,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 20:23:07,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:23:07,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:23:07,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007663585] [2020-11-29 20:23:07,435 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:23:07,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508810855] [2020-11-29 20:23:07,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:23:07,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 20:23:07,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074506359] [2020-11-29 20:23:07,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:23:07,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:23:07,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:23:07,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:23:07,437 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 5 states. [2020-11-29 20:23:07,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:23:07,626 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-11-29 20:23:07,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:23:07,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-29 20:23:07,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:23:07,628 INFO L225 Difference]: With dead ends: 62 [2020-11-29 20:23:07,628 INFO L226 Difference]: Without dead ends: 58 [2020-11-29 20:23:07,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:23:07,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-29 20:23:07,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2020-11-29 20:23:07,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-29 20:23:07,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-11-29 20:23:07,637 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2020-11-29 20:23:07,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:23:07,637 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-11-29 20:23:07,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:23:07,637 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-11-29 20:23:07,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 20:23:07,638 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:23:07,638 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:23:07,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:23:07,859 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:23:07,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:23:07,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1538122751, now seen corresponding path program 1 times [2020-11-29 20:23:07,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:23:07,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539692352] [2020-11-29 20:23:07,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:23:07,877 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:23:07,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [783518320] [2020-11-29 20:23:07,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5beb1719-bdd4-41ef-9574-0779bb3930fe/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 20:23:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:23:07,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 20:23:07,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:23:07,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:23:07,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539692352] [2020-11-29 20:23:07,987 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:23:07,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783518320] [2020-11-29 20:23:07,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:23:07,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 20:23:07,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861823526] [2020-11-29 20:23:07,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:23:07,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:23:07,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:23:07,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:23:07,989 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 5 states. [2020-11-29 20:23:08,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:23:08,155 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2020-11-29 20:23:08,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:23:08,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-29 20:23:08,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:23:08,157 INFO L225 Difference]: With dead ends: 59 [2020-11-29 20:23:08,157 INFO L226 Difference]: Without dead ends: 55 [2020-11-29 20:23:08,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:23:08,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-29 20:23:08,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2020-11-29 20:23:08,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-29 20:23:08,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-11-29 20:23:08,167 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 16 [2020-11-29 20:23:08,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:23:08,168 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-11-29 20:23:08,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:23:08,168 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-11-29 20:23:08,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 20:23:08,171 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:23:08,171 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 20:23:08,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:23:08,385 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:23:08,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:23:08,386 INFO L82 PathProgramCache]: Analyzing trace with hash 667400610, now seen corresponding path program 1 times [2020-11-29 20:23:08,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:23:08,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924857932] [2020-11-29 20:23:08,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:23:08,394 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:23:08,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1283128825] [2020-11-29 20:23:08,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5beb1719-bdd4-41ef-9574-0779bb3930fe/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 20:23:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:23:08,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 20:23:08,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:23:08,512 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 20:23:08,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924857932] [2020-11-29 20:23:08,513 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:23:08,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283128825] [2020-11-29 20:23:08,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:23:08,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 20:23:08,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120575913] [2020-11-29 20:23:08,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:23:08,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:23:08,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:23:08,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:23:08,515 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 5 states. [2020-11-29 20:23:08,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:23:08,650 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2020-11-29 20:23:08,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:23:08,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-29 20:23:08,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:23:08,652 INFO L225 Difference]: With dead ends: 57 [2020-11-29 20:23:08,652 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 20:23:08,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:23:08,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 20:23:08,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-11-29 20:23:08,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-29 20:23:08,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-11-29 20:23:08,660 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 18 [2020-11-29 20:23:08,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:23:08,661 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-11-29 20:23:08,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:23:08,661 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-11-29 20:23:08,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 20:23:08,662 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:23:08,662 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-11-29 20:23:08,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-29 20:23:08,863 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:23:08,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:23:08,863 INFO L82 PathProgramCache]: Analyzing trace with hash 789154926, now seen corresponding path program 2 times [2020-11-29 20:23:08,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:23:08,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582158429] [2020-11-29 20:23:08,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:23:08,874 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:23:08,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1746020185] [2020-11-29 20:23:08,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5beb1719-bdd4-41ef-9574-0779bb3930fe/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 20:23:08,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:23:08,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:23:08,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 20:23:08,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:23:09,009 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:23:09,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582158429] [2020-11-29 20:23:09,010 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:23:09,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746020185] [2020-11-29 20:23:09,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:23:09,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 20:23:09,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423020357] [2020-11-29 20:23:09,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:23:09,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:23:09,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:23:09,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:23:09,012 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 6 states. [2020-11-29 20:23:09,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:23:09,198 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-11-29 20:23:09,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 20:23:09,199 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-29 20:23:09,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:23:09,199 INFO L225 Difference]: With dead ends: 70 [2020-11-29 20:23:09,199 INFO L226 Difference]: Without dead ends: 66 [2020-11-29 20:23:09,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:23:09,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-29 20:23:09,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-11-29 20:23:09,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 20:23:09,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-11-29 20:23:09,207 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 22 [2020-11-29 20:23:09,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:23:09,208 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-11-29 20:23:09,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:23:09,208 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-11-29 20:23:09,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 20:23:09,209 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:23:09,209 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2020-11-29 20:23:09,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:23:09,410 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:23:09,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:23:09,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1831141167, now seen corresponding path program 2 times [2020-11-29 20:23:09,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:23:09,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516910341] [2020-11-29 20:23:09,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:23:09,420 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:23:09,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1469420331] [2020-11-29 20:23:09,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5beb1719-bdd4-41ef-9574-0779bb3930fe/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:23:09,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:23:09,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:23:09,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-29 20:23:09,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:23:09,565 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:23:09,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516910341] [2020-11-29 20:23:09,566 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:23:09,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469420331] [2020-11-29 20:23:09,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:23:09,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 20:23:09,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877431931] [2020-11-29 20:23:09,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:23:09,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:23:09,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:23:09,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:23:09,568 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 6 states. [2020-11-29 20:23:09,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:23:09,793 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2020-11-29 20:23:09,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:23:09,793 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-11-29 20:23:09,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:23:09,794 INFO L225 Difference]: With dead ends: 67 [2020-11-29 20:23:09,794 INFO L226 Difference]: Without dead ends: 63 [2020-11-29 20:23:09,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:23:09,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-29 20:23:09,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2020-11-29 20:23:09,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-29 20:23:09,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-11-29 20:23:09,803 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 24 [2020-11-29 20:23:09,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:23:09,803 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-11-29 20:23:09,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:23:09,803 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-11-29 20:23:09,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 20:23:09,804 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:23:09,805 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-11-29 20:23:10,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:23:10,031 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:23:10,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:23:10,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1210116596, now seen corresponding path program 2 times [2020-11-29 20:23:10,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:23:10,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566536566] [2020-11-29 20:23:10,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:23:10,042 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:23:10,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1123024238] [2020-11-29 20:23:10,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5beb1719-bdd4-41ef-9574-0779bb3930fe/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:23:10,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-29 20:23:10,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:23:10,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 20:23:10,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:23:10,167 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:23:10,167 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:23:10,227 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:23:10,228 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:23:12,324 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:23:18,509 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 20:23:18,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566536566] [2020-11-29 20:23:18,509 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:23:18,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123024238] [2020-11-29 20:23:18,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:23:18,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 20:23:18,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894790350] [2020-11-29 20:23:18,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:23:18,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:23:18,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:23:18,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:23:18,511 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 7 states. [2020-11-29 20:23:18,714 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 18 [2020-11-29 20:23:31,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:23:31,005 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-11-29 20:23:31,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:23:31,009 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-11-29 20:23:31,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:23:31,010 INFO L225 Difference]: With dead ends: 56 [2020-11-29 20:23:31,010 INFO L226 Difference]: Without dead ends: 54 [2020-11-29 20:23:31,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:23:31,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-29 20:23:31,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-29 20:23:31,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 20:23:31,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-11-29 20:23:31,019 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 26 [2020-11-29 20:23:31,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:23:31,020 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-11-29 20:23:31,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:23:31,020 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-11-29 20:23:31,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 20:23:31,021 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:23:31,021 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:23:31,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-29 20:23:31,222 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:23:31,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:23:31,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1873493846, now seen corresponding path program 1 times [2020-11-29 20:23:31,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:23:31,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277741911] [2020-11-29 20:23:31,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:23:31,254 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:23:31,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812590294] [2020-11-29 20:23:31,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5beb1719-bdd4-41ef-9574-0779bb3930fe/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:23:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:23:31,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 20:23:31,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:23:31,390 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:23:31,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277741911] [2020-11-29 20:23:31,391 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:23:31,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812590294] [2020-11-29 20:23:31,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:23:31,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 20:23:31,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305719723] [2020-11-29 20:23:31,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:23:31,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:23:31,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:23:31,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:23:31,393 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 6 states. [2020-11-29 20:23:31,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:23:31,497 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-11-29 20:23:31,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 20:23:31,498 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-11-29 20:23:31,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:23:31,498 INFO L225 Difference]: With dead ends: 62 [2020-11-29 20:23:31,498 INFO L226 Difference]: Without dead ends: 54 [2020-11-29 20:23:31,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:23:31,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-29 20:23:31,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-29 20:23:31,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 20:23:31,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-11-29 20:23:31,508 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 27 [2020-11-29 20:23:31,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:23:31,508 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-11-29 20:23:31,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:23:31,508 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-11-29 20:23:31,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 20:23:31,511 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:23:31,511 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2020-11-29 20:23:31,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:23:31,716 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:23:31,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:23:31,716 INFO L82 PathProgramCache]: Analyzing trace with hash 600720320, now seen corresponding path program 3 times [2020-11-29 20:23:31,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:23:31,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537077821] [2020-11-29 20:23:31,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:23:31,726 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:23:31,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [287528036] [2020-11-29 20:23:31,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5beb1719-bdd4-41ef-9574-0779bb3930fe/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:23:31,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 20:23:31,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:23:31,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 20:23:31,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:23:31,847 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:23:31,847 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:23:31,932 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 20:23:31,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537077821] [2020-11-29 20:23:31,933 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:23:31,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287528036] [2020-11-29 20:23:31,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:23:31,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 20:23:31,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554264601] [2020-11-29 20:23:31,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:23:31,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:23:31,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:23:31,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:23:31,935 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 5 states. [2020-11-29 20:23:32,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:23:32,116 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-11-29 20:23:32,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:23:32,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-11-29 20:23:32,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:23:32,119 INFO L225 Difference]: With dead ends: 54 [2020-11-29 20:23:32,119 INFO L226 Difference]: Without dead ends: 50 [2020-11-29 20:23:32,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:23:32,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-29 20:23:32,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-11-29 20:23:32,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-29 20:23:32,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-11-29 20:23:32,139 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 30 [2020-11-29 20:23:32,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:23:32,139 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-11-29 20:23:32,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:23:32,139 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-11-29 20:23:32,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 20:23:32,140 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:23:32,141 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2020-11-29 20:23:32,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:23:32,341 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:23:32,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:23:32,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1766796195, now seen corresponding path program 3 times [2020-11-29 20:23:32,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:23:32,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679692419] [2020-11-29 20:23:32,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:23:32,351 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:23:32,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [832299250] [2020-11-29 20:23:32,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5beb1719-bdd4-41ef-9574-0779bb3930fe/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:23:32,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 20:23:32,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:23:32,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-29 20:23:32,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:23:32,488 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:23:32,488 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:23:32,805 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-11-29 20:23:32,807 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:23:32,808 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:23:41,944 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 26 [2020-11-29 20:23:41,946 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 20:23:41,946 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:23:52,245 WARN L193 SmtUtils]: Spent 2.57 s on a formula simplification that was a NOOP. DAG size: 18 [2020-11-29 20:23:52,265 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:23:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-29 20:23:54,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679692419] [2020-11-29 20:23:54,820 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 20:23:54,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832299250] [2020-11-29 20:23:54,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:23:54,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-29 20:23:54,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228416699] [2020-11-29 20:23:54,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 20:23:54,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:23:54,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 20:23:54,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=63, Unknown=6, NotChecked=0, Total=90 [2020-11-29 20:23:54,823 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 10 states. [2020-11-29 20:24:03,793 WARN L193 SmtUtils]: Spent 8.77 s on a formula simplification. DAG size of input: 32 DAG size of output: 29 [2020-11-29 20:24:19,449 WARN L193 SmtUtils]: Spent 15.06 s on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2020-11-29 20:24:40,769 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0))) (and (= (+ c_ULTIMATE.start_main_~t~0 .cse0) c_ULTIMATE.start_main_~s~0) (= (+ (* 2 (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~s~0)) (* 2 .cse0) (* 2 c_ULTIMATE.start_main_~s~0)) (+ (* c_ULTIMATE.start_main_~s~0 c_ULTIMATE.start_main_~s~0) (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0) 1)) (= (+ (* c_ULTIMATE.start_main_~t~0 c_ULTIMATE.start_main_~t~0) 1) (+ (* 2 c_ULTIMATE.start_main_~t~0) (* 4 .cse0))) (let ((.cse1 (= (+ .cse0 (* 2 c_ULTIMATE.start_main_~a~0) 1) c_ULTIMATE.start_main_~s~0))) (or (and .cse1 (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond)) (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse1)))))) is different from false [2020-11-29 20:24:53,566 WARN L193 SmtUtils]: Spent 12.35 s on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2020-11-29 20:25:03,611 WARN L193 SmtUtils]: Spent 8.15 s on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-11-29 20:25:16,691 WARN L193 SmtUtils]: Spent 7.59 s on a formula simplification. DAG size of input: 39 DAG size of output: 27 [2020-11-29 20:25:39,765 WARN L193 SmtUtils]: Spent 8.32 s on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2020-11-29 20:25:57,142 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification that was a NOOP. DAG size: 27 [2020-11-29 20:26:24,862 WARN L193 SmtUtils]: Spent 6.21 s on a formula simplification. DAG size of input: 35 DAG size of output: 22 [2020-11-29 20:26:37,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:37,745 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-11-29 20:26:37,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 20:26:37,745 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-11-29 20:26:37,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:37,746 INFO L225 Difference]: With dead ends: 56 [2020-11-29 20:26:37,746 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:26:37,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 131.3s TimeCoverageRelationStatistics Valid=95, Invalid=228, Unknown=23, NotChecked=34, Total=380 [2020-11-29 20:26:37,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:26:37,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:26:37,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:26:37,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:26:37,748 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-11-29 20:26:37,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:37,748 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:26:37,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 20:26:37,748 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:26:37,748 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:26:37,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-29 20:26:37,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 20:27:00,741 WARN L193 SmtUtils]: Spent 22.65 s on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2020-11-29 20:27:12,233 WARN L193 SmtUtils]: Spent 11.49 s on a formula simplification. DAG size of input: 52 DAG size of output: 23 [2020-11-29 20:27:25,389 WARN L193 SmtUtils]: Spent 13.16 s on a formula simplification. DAG size of input: 53 DAG size of output: 30 [2020-11-29 20:27:45,890 WARN L193 SmtUtils]: Spent 20.50 s on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2020-11-29 20:28:08,953 WARN L193 SmtUtils]: Spent 23.06 s on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-11-29 20:28:24,678 WARN L193 SmtUtils]: Spent 15.72 s on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2020-11-29 20:28:24,681 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 20:28:24,681 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 20:28:24,681 INFO L277 CegarLoopResult]: At program point L48(lines 21 49) the Hoare annotation is: true [2020-11-29 20:28:24,681 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 20:28:24,681 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 20:28:24,681 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 20:28:24,681 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 20:28:24,682 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 20:28:24,682 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-11-29 20:28:24,682 INFO L270 CegarLoopResult]: At program point L12-1(lines 11 17) the Hoare annotation is: (let ((.cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse0 (* ULTIMATE.start_main_~a~0 2))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ .cse0 1) ULTIMATE.start_main_~t~0) (= (+ (* .cse1 2) (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0) 2) (* ULTIMATE.start_main_~s~0 2)) (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~s~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (+ .cse1 .cse0 1)))) [2020-11-29 20:28:24,682 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-29 20:28:24,682 INFO L270 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: (let ((.cse2 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse1 (* ULTIMATE.start_main_~a~0 2))) (and (= ULTIMATE.start_main_~s~0 (let ((.cse0 (div (+ ULTIMATE.start_main_~t~0 (- 1)) 2))) (+ (* .cse0 2) (* .cse0 .cse0) 1))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ .cse1 1) ULTIMATE.start_main_~t~0) (= (+ (* .cse2 2) (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0) 2) (* ULTIMATE.start_main_~s~0 2)) (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~s~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (+ .cse2 .cse1 1)))) [2020-11-29 20:28:24,682 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-11-29 20:28:24,682 INFO L270 CegarLoopResult]: At program point L12-5(lines 36 37) the Hoare annotation is: (let ((.cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse0 (* ULTIMATE.start_main_~a~0 2))) (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ .cse0 1) ULTIMATE.start_main_~t~0) (= (+ (* .cse1 2) (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~s~0) 2) (* ULTIMATE.start_main_~s~0 2)) (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~s~0) (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 1)) (= ULTIMATE.start_main_~s~0 (+ .cse1 .cse0 1)))) [2020-11-29 20:28:24,682 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-11-29 20:28:24,682 INFO L270 CegarLoopResult]: At program point L12-7(lines 11 17) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and .cse0 (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)) (let ((.cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse2 (* ULTIMATE.start_main_~a~0 2))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse1 4) (* ULTIMATE.start_main_~t~0 2))) (= (+ .cse2 1) ULTIMATE.start_main_~t~0) (= ULTIMATE.start_main_~s~0 (+ .cse1 .cse2 1)))))) [2020-11-29 20:28:24,683 INFO L274 CegarLoopResult]: For program point L12-8(lines 12 15) no Hoare annotation was computed. [2020-11-29 20:28:24,683 INFO L270 CegarLoopResult]: At program point L12-9(lines 11 17) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~t~0 1)) (and .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (let ((.cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse2 (* ULTIMATE.start_main_~a~0 2))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse1 4) (* ULTIMATE.start_main_~t~0 2))) (= (+ .cse2 1) ULTIMATE.start_main_~t~0) (= ULTIMATE.start_main_~s~0 (+ .cse1 .cse2 1)))))) [2020-11-29 20:28:24,683 INFO L274 CegarLoopResult]: For program point L12-10(lines 12 15) no Hoare annotation was computed. [2020-11-29 20:28:24,683 INFO L277 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: true [2020-11-29 20:28:24,683 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 20:28:24,683 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 20:28:24,683 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-29 20:28:24,683 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-11-29 20:28:24,683 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-11-29 20:28:24,683 INFO L274 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-11-29 20:28:24,683 INFO L274 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-11-29 20:28:24,683 INFO L274 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-11-29 20:28:24,683 INFO L274 CegarLoopResult]: For program point L30-1(lines 30 42) no Hoare annotation was computed. [2020-11-29 20:28:24,684 INFO L270 CegarLoopResult]: At program point L30-3(lines 30 42) the Hoare annotation is: (let ((.cse1 (* ULTIMATE.start_main_~a~0 2)) (.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) (or (and (<= ~counter~0 0) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1) (= ULTIMATE.start_main_~s~0 (+ .cse0 .cse1 1))) (and (= (+ (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (+ (* .cse0 4) (* ULTIMATE.start_main_~t~0 2))) (= (+ .cse1 1) ULTIMATE.start_main_~t~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 (+ .cse0 ULTIMATE.start_main_~t~0))))) [2020-11-29 20:28:24,684 INFO L274 CegarLoopResult]: For program point L30-4(lines 30 42) no Hoare annotation was computed. [2020-11-29 20:28:24,684 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 20:28:24,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:28:24 BoogieIcfgContainer [2020-11-29 20:28:24,704 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:28:24,705 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:28:24,705 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:28:24,705 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:28:24,706 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:23:05" (3/4) ... [2020-11-29 20:28:24,727 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:28:24,737 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-29 20:28:24,742 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 20:28:24,743 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:28:24,743 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:28:24,785 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5beb1719-bdd4-41ef-9574-0779bb3930fe/bin/uautomizer/witness.graphml [2020-11-29 20:28:24,785 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:28:24,786 INFO L168 Benchmark]: Toolchain (without parser) took 320651.49 ms. Allocated memory was 79.7 MB in the beginning and 121.6 MB in the end (delta: 41.9 MB). Free memory was 50.4 MB in the beginning and 32.8 MB in the end (delta: 17.6 MB). Peak memory consumption was 58.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:28:24,787 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 79.7 MB. Free memory was 37.2 MB in the beginning and 37.1 MB in the end (delta: 34.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:28:24,787 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.71 ms. Allocated memory was 79.7 MB in the beginning and 100.7 MB in the end (delta: 21.0 MB). Free memory was 50.2 MB in the beginning and 78.5 MB in the end (delta: -28.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:28:24,788 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.55 ms. Allocated memory is still 100.7 MB. Free memory was 78.5 MB in the beginning and 77.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:28:24,788 INFO L168 Benchmark]: Boogie Preprocessor took 52.13 ms. Allocated memory is still 100.7 MB. Free memory was 77.0 MB in the beginning and 75.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:28:24,789 INFO L168 Benchmark]: RCFGBuilder took 625.48 ms. Allocated memory is still 100.7 MB. Free memory was 75.7 MB in the beginning and 61.7 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:28:24,789 INFO L168 Benchmark]: TraceAbstraction took 319491.02 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 61.2 MB in the beginning and 35.9 MB in the end (delta: 25.3 MB). Peak memory consumption was 49.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:28:24,790 INFO L168 Benchmark]: Witness Printer took 80.77 ms. Allocated memory is still 121.6 MB. Free memory was 35.9 MB in the beginning and 32.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:28:24,792 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 79.7 MB. Free memory was 37.2 MB in the beginning and 37.1 MB in the end (delta: 34.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 337.71 ms. Allocated memory was 79.7 MB in the beginning and 100.7 MB in the end (delta: 21.0 MB). Free memory was 50.2 MB in the beginning and 78.5 MB in the end (delta: -28.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.55 ms. Allocated memory is still 100.7 MB. Free memory was 78.5 MB in the beginning and 77.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.13 ms. Allocated memory is still 100.7 MB. Free memory was 77.0 MB in the beginning and 75.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 625.48 ms. Allocated memory is still 100.7 MB. Free memory was 75.7 MB in the beginning and 61.7 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 319491.02 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 61.2 MB in the beginning and 35.9 MB in the end (delta: 25.3 MB). Peak memory consumption was 49.1 MB. Max. memory is 16.1 GB. * Witness Printer took 80.77 ms. Allocated memory is still 121.6 MB. Free memory was 35.9 MB in the beginning and 32.8 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 - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((!(0 == cond) && a == 1) && t == 3) && s == t + 1) || (((!(0 == cond) && s == 1) && a == 0) && t == 1)) || (((1 == cond && t * t + 1 == a * a * 4 + t * 2) && a * 2 + 1 == t) && s == a * a + a * 2 + 1) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((1 == cond && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((counter <= 0 && a == 0) && t == 1) && s == a * a + a * 2 + 1) || (((t * t + 1 == a * a * 4 + t * 2 && a * 2 + 1 == t) && 1 <= cond) && s == a * a + t) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((t * 2 + t * t + 1 == s * 4 && 1 == cond) && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((!(0 == cond) && s == 1) && t == 1) || ((!(0 == cond) && t == 3) && s == t + 1)) || (((1 == cond && t * t + 1 == a * a * 4 + t * 2) && a * 2 + 1 == t) && s == a * a + a * 2 + 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((s == (t + -1) / 2 * 2 + (t + -1) / 2 * ((t + -1) / 2) + 1 && 1 == cond) && a * 2 + 1 == t) && a * a * 2 + a * a * s * 2 + s * 2 == s * s + a * a * a * a + 1) && s == a * a + a * 2 + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 212.6s, OverallIterations: 13, TraceHistogramMax: 4, AutomataDifference: 177.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 106.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 273 SDtfs, 267 SDslu, 535 SDs, 0 SdLazy, 622 SolverSat, 139 SolverUnsat, 25 SolverUnknown, 0 SolverNotchecked, 65.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 260 GetRequests, 184 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 132.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 63 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 35 NumberOfFragments, 359 HoareAnnotationTreeSize, 8 FomulaSimplifications, 3579 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 391 FormulaSimplificationTreeSizeReductionInter, 106.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 31.6s InterpolantComputationTime, 239 NumberOfCodeBlocks, 191 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 226 ConstructedInterpolants, 0 QuantifiedInterpolants, 29583 SizeOfPredicates, 58 NumberOfNonLiveVariables, 962 ConjunctsInSsa, 143 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 92/153 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...