./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN --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 1009b309b84d3a678e4f12db10e873a2b96e065352111c00074b04d416cca18d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:52:26,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:52:26,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:52:26,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:52:26,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:52:26,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:52:26,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:52:26,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:52:26,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:52:26,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:52:26,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:52:26,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:52:26,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:52:26,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:52:26,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:52:26,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:52:26,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:52:26,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:52:26,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:52:26,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:52:26,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:52:26,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:52:26,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:52:26,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:52:26,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:52:26,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:52:26,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:52:26,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:52:26,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:52:26,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:52:26,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:52:26,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:52:26,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:52:26,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:52:26,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:52:26,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:52:26,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:52:26,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:52:26,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:52:26,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:52:26,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:52:26,293 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:52:26,327 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:52:26,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:52:26,328 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:52:26,328 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:52:26,328 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:52:26,329 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:52:26,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:52:26,329 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:52:26,330 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:52:26,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:52:26,330 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:52:26,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:52:26,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:52:26,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:52:26,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:52:26,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:52:26,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:52:26,331 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:52:26,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:52:26,331 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:52:26,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:52:26,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:52:26,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:52:26,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:52:26,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:52:26,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:52:26,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:52:26,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:52:26,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:52:26,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:52:26,333 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:52:26,334 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:52:26,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:52:26,334 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_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1009b309b84d3a678e4f12db10e873a2b96e065352111c00074b04d416cca18d [2022-11-20 10:52:26,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:52:26,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:52:26,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:52:26,688 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:52:26,688 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:52:26,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c [2022-11-20 10:52:29,755 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:52:30,017 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:52:30,017 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c [2022-11-20 10:52:30,024 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/data/1f49d5b68/ccab129b380144fb92d03fd0a990d2bf/FLAGe23b4d255 [2022-11-20 10:52:30,039 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/data/1f49d5b68/ccab129b380144fb92d03fd0a990d2bf [2022-11-20 10:52:30,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:52:30,043 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:52:30,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:52:30,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:52:30,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:52:30,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:52:30" (1/1) ... [2022-11-20 10:52:30,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b95afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:30, skipping insertion in model container [2022-11-20 10:52:30,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:52:30" (1/1) ... [2022-11-20 10:52:30,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:52:30,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:52:30,223 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c[588,601] [2022-11-20 10:52:30,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:52:30,254 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:52:30,266 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c[588,601] [2022-11-20 10:52:30,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:52:30,295 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:52:30,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:30 WrapperNode [2022-11-20 10:52:30,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:52:30,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:52:30,298 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:52:30,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:52:30,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:30" (1/1) ... [2022-11-20 10:52:30,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:30" (1/1) ... [2022-11-20 10:52:30,354 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2022-11-20 10:52:30,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:52:30,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:52:30,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:52:30,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:52:30,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:30" (1/1) ... [2022-11-20 10:52:30,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:30" (1/1) ... [2022-11-20 10:52:30,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:30" (1/1) ... [2022-11-20 10:52:30,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:30" (1/1) ... [2022-11-20 10:52:30,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:30" (1/1) ... [2022-11-20 10:52:30,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:30" (1/1) ... [2022-11-20 10:52:30,389 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:30" (1/1) ... [2022-11-20 10:52:30,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:30" (1/1) ... [2022-11-20 10:52:30,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:52:30,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:52:30,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:52:30,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:52:30,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:30" (1/1) ... [2022-11-20 10:52:30,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:52:30,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:30,435 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:52:30,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:52:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:52:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:52:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:52:30,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:52:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 10:52:30,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 10:52:30,562 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:52:30,564 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:52:30,730 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:52:30,737 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:52:30,737 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 10:52:30,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:52:30 BoogieIcfgContainer [2022-11-20 10:52:30,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:52:30,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:52:30,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:52:30,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:52:30,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:52:30" (1/3) ... [2022-11-20 10:52:30,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161ba54c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:52:30, skipping insertion in model container [2022-11-20 10:52:30,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:52:30" (2/3) ... [2022-11-20 10:52:30,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161ba54c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:52:30, skipping insertion in model container [2022-11-20 10:52:30,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:52:30" (3/3) ... [2022-11-20 10:52:30,749 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound1.c [2022-11-20 10:52:30,775 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:52:30,776 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:52:30,827 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:52:30,835 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@68eec122, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:52:30,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 10:52:30,840 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-20 10:52:30,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 10:52:30,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:30,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:30,849 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:52:30,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:30,855 INFO L85 PathProgramCache]: Analyzing trace with hash -588951690, now seen corresponding path program 1 times [2022-11-20 10:52:30,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:30,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629650418] [2022-11-20 10:52:30,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:30,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:31,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:31,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629650418] [2022-11-20 10:52:31,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629650418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:31,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:31,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:52:31,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384234870] [2022-11-20 10:52:31,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:31,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:52:31,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:31,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:52:31,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:52:31,118 INFO L87 Difference]: Start difference. First operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:31,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:31,140 INFO L93 Difference]: Finished difference Result 51 states and 89 transitions. [2022-11-20 10:52:31,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:52:31,142 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 10:52:31,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:31,149 INFO L225 Difference]: With dead ends: 51 [2022-11-20 10:52:31,149 INFO L226 Difference]: Without dead ends: 23 [2022-11-20 10:52:31,153 INFO L412 NwaCegarLoop]: 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 [2022-11-20 10:52:31,156 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:31,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:52:31,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-20 10:52:31,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-20 10:52:31,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-20 10:52:31,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2022-11-20 10:52:31,198 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 9 [2022-11-20 10:52:31,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:31,198 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2022-11-20 10:52:31,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:31,199 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2022-11-20 10:52:31,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 10:52:31,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:31,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:31,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:52:31,201 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:52:31,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:31,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1187604804, now seen corresponding path program 1 times [2022-11-20 10:52:31,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:31,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671885736] [2022-11-20 10:52:31,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:31,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:31,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:31,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:31,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671885736] [2022-11-20 10:52:31,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671885736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:31,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:31,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:52:31,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520493085] [2022-11-20 10:52:31,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:31,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:52:31,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:31,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:52:31,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:52:31,475 INFO L87 Difference]: Start difference. First operand 23 states and 33 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:31,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:31,683 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2022-11-20 10:52:31,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:52:31,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 10:52:31,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:31,687 INFO L225 Difference]: With dead ends: 29 [2022-11-20 10:52:31,687 INFO L226 Difference]: Without dead ends: 27 [2022-11-20 10:52:31,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:52:31,689 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:31,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 63 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:52:31,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-20 10:52:31,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-20 10:52:31,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-20 10:52:31,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2022-11-20 10:52:31,715 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 9 [2022-11-20 10:52:31,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:31,716 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2022-11-20 10:52:31,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:31,717 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2022-11-20 10:52:31,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 10:52:31,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:31,718 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:31,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:52:31,718 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:52:31,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:31,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1137950087, now seen corresponding path program 1 times [2022-11-20 10:52:31,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:31,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727305334] [2022-11-20 10:52:31,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:31,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:31,741 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:52:31,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2103986227] [2022-11-20 10:52:31,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:31,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:31,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:31,753 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:52:31,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:52:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:31,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:52:31,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:52:32,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:32,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:52:32,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:32,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:32,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727305334] [2022-11-20 10:52:32,173 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:52:32,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103986227] [2022-11-20 10:52:32,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103986227] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:52:32,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:52:32,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-20 10:52:32,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784937245] [2022-11-20 10:52:32,175 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:52:32,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:52:32,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:32,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:52:32,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:52:32,177 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:52:32,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:32,692 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2022-11-20 10:52:32,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:52:32,695 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2022-11-20 10:52:32,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:32,697 INFO L225 Difference]: With dead ends: 52 [2022-11-20 10:52:32,698 INFO L226 Difference]: Without dead ends: 50 [2022-11-20 10:52:32,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:52:32,700 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 18 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:32,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 60 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:52:32,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-20 10:52:32,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2022-11-20 10:52:32,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 21 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-20 10:52:32,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 65 transitions. [2022-11-20 10:52:32,731 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 65 transitions. Word has length 14 [2022-11-20 10:52:32,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:32,732 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 65 transitions. [2022-11-20 10:52:32,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:52:32,732 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 65 transitions. [2022-11-20 10:52:32,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 10:52:32,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:32,733 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:32,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 10:52:32,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-20 10:52:32,939 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:52:32,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:32,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1500531996, now seen corresponding path program 1 times [2022-11-20 10:52:32,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:32,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610561471] [2022-11-20 10:52:32,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:32,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:32,952 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:52:32,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2129551145] [2022-11-20 10:52:32,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:32,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:32,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:32,954 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:52:32,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:52:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:33,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 10:52:33,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:52:33,150 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:52:33,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:52:33,324 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:52:33,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:33,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610561471] [2022-11-20 10:52:33,326 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:52:33,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129551145] [2022-11-20 10:52:33,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129551145] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:52:33,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:52:33,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-20 10:52:33,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334215960] [2022-11-20 10:52:33,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:52:33,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:52:33,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:33,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:52:33,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:52:33,339 INFO L87 Difference]: Start difference. First operand 47 states and 65 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 10:52:33,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:33,678 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2022-11-20 10:52:33,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:52:33,679 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 19 [2022-11-20 10:52:33,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:33,680 INFO L225 Difference]: With dead ends: 54 [2022-11-20 10:52:33,680 INFO L226 Difference]: Without dead ends: 52 [2022-11-20 10:52:33,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:52:33,682 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 26 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:33,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 47 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:52:33,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-20 10:52:33,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-11-20 10:52:33,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 21 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-20 10:52:33,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2022-11-20 10:52:33,704 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 19 [2022-11-20 10:52:33,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:33,704 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2022-11-20 10:52:33,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 10:52:33,705 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2022-11-20 10:52:33,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 10:52:33,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:33,706 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:33,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:52:33,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:33,924 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:52:33,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:33,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1926539111, now seen corresponding path program 1 times [2022-11-20 10:52:33,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:33,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786011220] [2022-11-20 10:52:33,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:33,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:33,951 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:52:33,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1531807541] [2022-11-20 10:52:33,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:33,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:33,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:33,961 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:52:33,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:52:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:34,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 10:52:34,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:52:34,162 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 10:52:34,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:52:34,471 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 10:52:34,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:34,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786011220] [2022-11-20 10:52:34,473 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:52:34,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531807541] [2022-11-20 10:52:34,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531807541] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:52:34,473 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:52:34,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-20 10:52:34,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769998032] [2022-11-20 10:52:34,474 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:52:34,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:52:34,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:34,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:52:34,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:52:34,477 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-20 10:52:35,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:35,639 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2022-11-20 10:52:35,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:52:35,640 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 24 [2022-11-20 10:52:35,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:35,641 INFO L225 Difference]: With dead ends: 67 [2022-11-20 10:52:35,641 INFO L226 Difference]: Without dead ends: 58 [2022-11-20 10:52:35,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:52:35,642 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:35,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 60 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 10:52:35,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-20 10:52:35,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-11-20 10:52:35,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 31 states have (on average 1.064516129032258) internal successors, (33), 33 states have internal predecessors, (33), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-20 10:52:35,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2022-11-20 10:52:35,664 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 24 [2022-11-20 10:52:35,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:35,664 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2022-11-20 10:52:35,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-20 10:52:35,665 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2022-11-20 10:52:35,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 10:52:35,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:35,666 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:35,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 10:52:35,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:35,880 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:52:35,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:35,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1495173479, now seen corresponding path program 1 times [2022-11-20 10:52:35,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:35,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066327889] [2022-11-20 10:52:35,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:35,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:35,898 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:52:35,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055575071] [2022-11-20 10:52:35,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:35,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:35,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:35,906 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:52:35,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:52:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:35,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 10:52:35,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:52:36,139 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-20 10:52:36,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:52:36,314 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-20 10:52:36,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:36,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066327889] [2022-11-20 10:52:36,315 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:52:36,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055575071] [2022-11-20 10:52:36,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055575071] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:52:36,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:52:36,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2022-11-20 10:52:36,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357683855] [2022-11-20 10:52:36,316 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:52:36,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 10:52:36,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:36,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 10:52:36,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:52:36,318 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) [2022-11-20 10:52:38,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 10:52:41,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 10:52:41,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:41,124 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2022-11-20 10:52:41,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:52:41,125 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) Word has length 46 [2022-11-20 10:52:41,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:41,126 INFO L225 Difference]: With dead ends: 82 [2022-11-20 10:52:41,126 INFO L226 Difference]: Without dead ends: 80 [2022-11-20 10:52:41,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:52:41,128 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 24 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 80 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:41,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 62 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 280 Invalid, 2 Unknown, 0 Unchecked, 4.7s Time] [2022-11-20 10:52:41,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-20 10:52:41,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2022-11-20 10:52:41,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 45 states have internal predecessors, (45), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-20 10:52:41,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 96 transitions. [2022-11-20 10:52:41,170 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 96 transitions. Word has length 46 [2022-11-20 10:52:41,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:41,171 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 96 transitions. [2022-11-20 10:52:41,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) [2022-11-20 10:52:41,172 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 96 transitions. [2022-11-20 10:52:41,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 10:52:41,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:41,176 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:41,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-20 10:52:41,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:41,382 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:52:41,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:41,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1498221753, now seen corresponding path program 2 times [2022-11-20 10:52:41,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:41,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605960586] [2022-11-20 10:52:41,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:41,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:41,399 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:52:41,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [603265622] [2022-11-20 10:52:41,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:52:41,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:41,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:41,412 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:52:41,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:52:41,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:52:41,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:52:41,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 10:52:41,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:52:41,627 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-20 10:52:41,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:52:41,887 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 19 proven. 25 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-20 10:52:41,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:41,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605960586] [2022-11-20 10:52:41,889 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:52:41,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603265622] [2022-11-20 10:52:41,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603265622] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:52:41,890 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:52:41,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2022-11-20 10:52:41,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749451798] [2022-11-20 10:52:41,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:52:41,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:52:41,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:41,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:52:41,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:52:41,895 INFO L87 Difference]: Start difference. First operand 79 states and 96 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-20 10:52:42,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:42,859 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2022-11-20 10:52:42,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:52:42,860 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 56 [2022-11-20 10:52:42,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:42,861 INFO L225 Difference]: With dead ends: 86 [2022-11-20 10:52:42,861 INFO L226 Difference]: Without dead ends: 81 [2022-11-20 10:52:42,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:52:42,863 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:42,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 88 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 10:52:42,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-20 10:52:42,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-11-20 10:52:42,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 48 states have internal predecessors, (48), 24 states have call successors, (24), 11 states have call predecessors, (24), 11 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-20 10:52:42,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2022-11-20 10:52:42,902 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 56 [2022-11-20 10:52:42,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:42,903 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2022-11-20 10:52:42,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 11 states have internal predecessors, (24), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-20 10:52:42,903 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2022-11-20 10:52:42,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 10:52:42,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:42,911 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:42,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:52:43,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:43,117 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:52:43,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:43,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1061977627, now seen corresponding path program 1 times [2022-11-20 10:52:43,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:43,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304243524] [2022-11-20 10:52:43,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:43,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:43,127 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:52:43,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016175966] [2022-11-20 10:52:43,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:43,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:43,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:43,132 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:52:43,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:52:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:43,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 10:52:43,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:52:43,572 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-20 10:52:43,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:52:43,866 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-20 10:52:43,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:43,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304243524] [2022-11-20 10:52:43,866 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:52:43,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016175966] [2022-11-20 10:52:43,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016175966] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:52:43,867 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:52:43,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2022-11-20 10:52:43,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120626106] [2022-11-20 10:52:43,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:52:43,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 10:52:43,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:43,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 10:52:43,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:52:43,869 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-11-20 10:52:45,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:45,025 INFO L93 Difference]: Finished difference Result 95 states and 114 transitions. [2022-11-20 10:52:45,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 10:52:45,026 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 67 [2022-11-20 10:52:45,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:45,027 INFO L225 Difference]: With dead ends: 95 [2022-11-20 10:52:45,027 INFO L226 Difference]: Without dead ends: 93 [2022-11-20 10:52:45,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2022-11-20 10:52:45,029 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 38 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:45,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 150 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 10:52:45,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-20 10:52:45,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2022-11-20 10:52:45,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 52 states have internal predecessors, (53), 29 states have call successors, (29), 12 states have call predecessors, (29), 12 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-20 10:52:45,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 109 transitions. [2022-11-20 10:52:45,082 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 109 transitions. Word has length 67 [2022-11-20 10:52:45,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:45,083 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 109 transitions. [2022-11-20 10:52:45,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-11-20 10:52:45,083 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 109 transitions. [2022-11-20 10:52:45,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-20 10:52:45,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:45,086 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:45,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 10:52:45,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:45,295 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:52:45,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:45,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1246911088, now seen corresponding path program 1 times [2022-11-20 10:52:45,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:45,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703733213] [2022-11-20 10:52:45,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:45,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:45,306 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:52:45,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [86163220] [2022-11-20 10:52:45,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:45,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:45,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:45,308 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:52:45,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 10:52:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:45,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 10:52:45,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:52:45,674 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-11-20 10:52:45,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:52:45,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:45,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703733213] [2022-11-20 10:52:45,934 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:52:45,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86163220] [2022-11-20 10:52:45,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86163220] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:52:45,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:52:45,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-11-20 10:52:45,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103906804] [2022-11-20 10:52:45,935 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:52:45,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:52:45,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:45,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:52:45,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:52:45,936 INFO L87 Difference]: Start difference. First operand 91 states and 109 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 10:52:46,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:46,283 INFO L93 Difference]: Finished difference Result 97 states and 114 transitions. [2022-11-20 10:52:46,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:52:46,284 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 72 [2022-11-20 10:52:46,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:46,292 INFO L225 Difference]: With dead ends: 97 [2022-11-20 10:52:46,292 INFO L226 Difference]: Without dead ends: 88 [2022-11-20 10:52:46,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:52:46,297 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 25 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:46,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 95 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:52:46,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-20 10:52:46,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-11-20 10:52:46,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 51 states have internal predecessors, (52), 26 states have call successors, (26), 12 states have call predecessors, (26), 12 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-20 10:52:46,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 103 transitions. [2022-11-20 10:52:46,343 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 103 transitions. Word has length 72 [2022-11-20 10:52:46,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:46,343 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 103 transitions. [2022-11-20 10:52:46,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 10:52:46,344 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 103 transitions. [2022-11-20 10:52:46,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-20 10:52:46,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:46,347 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:46,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:52:46,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:46,554 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:52:46,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:46,554 INFO L85 PathProgramCache]: Analyzing trace with hash -322800313, now seen corresponding path program 3 times [2022-11-20 10:52:46,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:46,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871066654] [2022-11-20 10:52:46,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:46,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:46,567 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:52:46,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [562783835] [2022-11-20 10:52:46,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:52:46,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:46,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:46,569 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:52:46,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 10:52:46,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 10:52:46,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:52:46,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 10:52:46,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:52:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-20 10:52:46,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:52:47,675 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-11-20 10:52:47,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:47,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871066654] [2022-11-20 10:52:47,677 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:52:47,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562783835] [2022-11-20 10:52:47,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562783835] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:52:47,677 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:52:47,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2022-11-20 10:52:47,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173912516] [2022-11-20 10:52:47,680 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:52:47,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 10:52:47,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:47,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:52:47,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:52:47,683 INFO L87 Difference]: Start difference. First operand 88 states and 103 transitions. Second operand has 16 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2022-11-20 10:52:52,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-20 10:52:52,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:52,443 INFO L93 Difference]: Finished difference Result 110 states and 123 transitions. [2022-11-20 10:52:52,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:52:52,443 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) Word has length 78 [2022-11-20 10:52:52,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:52,444 INFO L225 Difference]: With dead ends: 110 [2022-11-20 10:52:52,444 INFO L226 Difference]: Without dead ends: 107 [2022-11-20 10:52:52,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-11-20 10:52:52,445 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 24 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 96 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:52,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 84 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 399 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-11-20 10:52:52,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-20 10:52:52,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2022-11-20 10:52:52,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 63 states have internal predecessors, (64), 27 states have call successors, (27), 16 states have call predecessors, (27), 16 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-20 10:52:52,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 116 transitions. [2022-11-20 10:52:52,501 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 116 transitions. Word has length 78 [2022-11-20 10:52:52,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:52,502 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 116 transitions. [2022-11-20 10:52:52,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2022-11-20 10:52:52,502 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 116 transitions. [2022-11-20 10:52:52,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-20 10:52:52,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:52,504 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:52,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 10:52:52,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 10:52:52,710 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:52:52,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:52,710 INFO L85 PathProgramCache]: Analyzing trace with hash -674604307, now seen corresponding path program 2 times [2022-11-20 10:52:52,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:52,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278239406] [2022-11-20 10:52:52,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:52,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:52,720 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:52:52,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1328252239] [2022-11-20 10:52:52,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:52:52,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:52,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:52,727 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:52:52,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 10:52:52,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:52:52,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:52:52,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 10:52:52,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:52:53,117 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 78 proven. 25 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2022-11-20 10:52:53,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:52:54,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:54,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278239406] [2022-11-20 10:52:54,172 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:52:54,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328252239] [2022-11-20 10:52:54,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328252239] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:52:54,172 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:52:54,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-11-20 10:52:54,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473219231] [2022-11-20 10:52:54,173 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:52:54,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 10:52:54,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:54,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 10:52:54,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:52:54,190 INFO L87 Difference]: Start difference. First operand 105 states and 116 transitions. Second operand has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-20 10:52:54,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:54,746 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2022-11-20 10:52:54,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:52:54,747 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) Word has length 99 [2022-11-20 10:52:54,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:54,748 INFO L225 Difference]: With dead ends: 111 [2022-11-20 10:52:54,748 INFO L226 Difference]: Without dead ends: 98 [2022-11-20 10:52:54,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:52:54,749 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 12 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:54,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 88 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:52:54,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-20 10:52:54,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-11-20 10:52:54,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 24 states have call successors, (24), 15 states have call predecessors, (24), 15 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-20 10:52:54,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions. [2022-11-20 10:52:54,782 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 99 [2022-11-20 10:52:54,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:54,783 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 107 transitions. [2022-11-20 10:52:54,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-20 10:52:54,783 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 107 transitions. [2022-11-20 10:52:54,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-20 10:52:54,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:54,785 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:54,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 10:52:54,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 10:52:54,991 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:52:54,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:54,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1837317061, now seen corresponding path program 2 times [2022-11-20 10:52:54,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:54,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860155847] [2022-11-20 10:52:54,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:54,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:55,004 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:52:55,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1491043448] [2022-11-20 10:52:55,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:52:55,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:55,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:55,006 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:52:55,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 10:52:55,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:52:55,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:52:55,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 10:52:55,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:52:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 432 proven. 0 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2022-11-20 10:52:55,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:52:55,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:55,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860155847] [2022-11-20 10:52:55,332 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:52:55,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491043448] [2022-11-20 10:52:55,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491043448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:55,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:55,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:52:55,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436615189] [2022-11-20 10:52:55,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:55,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:52:55,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:55,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:52:55,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:52:55,334 INFO L87 Difference]: Start difference. First operand 98 states and 107 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-11-20 10:52:55,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:55,531 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2022-11-20 10:52:55,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:52:55,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 121 [2022-11-20 10:52:55,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:55,532 INFO L225 Difference]: With dead ends: 102 [2022-11-20 10:52:55,532 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 10:52:55,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:52:55,536 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:55,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 61 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:52:55,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 10:52:55,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 10:52:55,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:55,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 10:52:55,538 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 121 [2022-11-20 10:52:55,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:55,539 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 10:52:55,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-11-20 10:52:55,539 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 10:52:55,539 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 10:52:55,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 10:52:55,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 10:52:55,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 10:52:55,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 10:52:57,544 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 10:52:57,544 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 46) the Hoare annotation is: (let ((.cse4 (* 6 |ULTIMATE.start_main_~n~0#1|))) (let ((.cse2 (<= 0 |ULTIMATE.start_main_~a~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~a~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~z~0#1| (+ 6 .cse4))) (.cse5 (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) .cse2 (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|)) (and .cse0 .cse1 (= |ULTIMATE.start_main_~x~0#1| 1) .cse3 .cse2 (= 6 .cse4) .cse5) (and .cse0 .cse1 .cse3 (<= 1 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~x~0#1| 8) .cse5 (= 19 |ULTIMATE.start_main_~y~0#1|))))) [2022-11-20 10:52:57,545 INFO L895 garLoopResultBuilder]: At program point L33-3(lines 33 46) the Hoare annotation is: (let ((.cse3 (* 6 |ULTIMATE.start_main_~n~0#1|))) (let ((.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (= |ULTIMATE.start_main_~z~0#1| (+ 6 .cse3))) (.cse2 (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (or (and .cse0 .cse1 (<= 1 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~x~0#1| 8) (< |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~n~0#1|) .cse2 (= 19 |ULTIMATE.start_main_~y~0#1|)) (and .cse0 (<= |ULTIMATE.start_main_~a~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 1) .cse1 (<= 0 |ULTIMATE.start_main_~a~0#1|) (= 6 .cse3) .cse2) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))))) [2022-11-20 10:52:57,545 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (and (= (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) [2022-11-20 10:52:57,545 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (<= |ULTIMATE.start_main_~a~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~z~0#1| 1)) (= |ULTIMATE.start_main_~x~0#1| 8) (<= 0 |ULTIMATE.start_main_~a~0#1|) .cse0 (= 19 |ULTIMATE.start_main_~y~0#1|)) (let ((.cse1 (* 6 |ULTIMATE.start_main_~n~0#1|))) (and (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~z~0#1| (+ 6 .cse1)) (= 6 .cse1) .cse0)) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|)))) [2022-11-20 10:52:57,545 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse3 (* 6 |ULTIMATE.start_main_~n~0#1|))) (let ((.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (= |ULTIMATE.start_main_~z~0#1| (+ 6 .cse3))) (.cse2 (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (or (and .cse0 .cse1 (<= 1 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~x~0#1| 8) (< |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~n~0#1|) .cse2 (= 19 |ULTIMATE.start_main_~y~0#1|)) (and .cse0 (<= |ULTIMATE.start_main_~a~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 1) .cse1 (<= 0 |ULTIMATE.start_main_~a~0#1|) (= 6 .cse3) .cse2) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))))) [2022-11-20 10:52:57,545 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2022-11-20 10:52:57,545 INFO L899 garLoopResultBuilder]: For program point L38(lines 33 46) no Hoare annotation was computed. [2022-11-20 10:52:57,546 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse4 (* 6 |ULTIMATE.start_main_~n~0#1|))) (let ((.cse2 (<= 0 |ULTIMATE.start_main_~a~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~a~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~z~0#1| (+ 6 .cse4))) (.cse5 (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) .cse2 (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|)) (and .cse0 .cse1 (= |ULTIMATE.start_main_~x~0#1| 1) .cse3 .cse2 (= 6 .cse4) .cse5) (and .cse0 .cse1 .cse3 (<= 1 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~x~0#1| 8) .cse5 (= 19 |ULTIMATE.start_main_~y~0#1|))))) [2022-11-20 10:52:57,546 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (let ((.cse4 (* 6 |ULTIMATE.start_main_~n~0#1|))) (let ((.cse2 (<= 0 |ULTIMATE.start_main_~a~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~a~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~z~0#1| (+ 6 .cse4))) (.cse5 (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) .cse2 (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|)) (and .cse0 .cse1 (= |ULTIMATE.start_main_~x~0#1| 1) .cse3 .cse2 (= 6 .cse4) .cse5) (and .cse0 .cse1 .cse3 (<= 1 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~x~0#1| 8) .cse5 (= 19 |ULTIMATE.start_main_~y~0#1|))))) [2022-11-20 10:52:57,546 INFO L895 garLoopResultBuilder]: At program point L34-1(line 34) the Hoare annotation is: (let ((.cse4 (* 6 |ULTIMATE.start_main_~n~0#1|))) (let ((.cse2 (<= 0 |ULTIMATE.start_main_~a~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~a~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~z~0#1| (+ 6 .cse4))) (.cse5 (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) .cse2 (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|)) (and .cse0 .cse1 (= |ULTIMATE.start_main_~x~0#1| 1) .cse3 .cse2 (= 6 .cse4) .cse5) (and .cse0 .cse1 .cse3 (<= 1 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~x~0#1| 8) .cse5 (= 19 |ULTIMATE.start_main_~y~0#1|))))) [2022-11-20 10:52:57,546 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 10:52:57,546 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 10:52:57,546 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 10:52:57,547 INFO L902 garLoopResultBuilder]: At program point L55(lines 22 56) the Hoare annotation is: true [2022-11-20 10:52:57,547 INFO L899 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2022-11-20 10:52:57,547 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse0 (* 3 |ULTIMATE.start_main_~n~0#1|)) (.cse1 (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (and (= |ULTIMATE.start_main_~y~0#1| (+ .cse0 .cse1 1)) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (= (+ .cse0 .cse1 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) [2022-11-20 10:52:57,547 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (or (and .cse0 (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~z~0#1| 1)) (<= 1 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~x~0#1| 8) (< |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~n~0#1|) .cse1 (= 19 |ULTIMATE.start_main_~y~0#1|)) (let ((.cse2 (* 6 |ULTIMATE.start_main_~n~0#1|))) (and .cse0 (<= |ULTIMATE.start_main_~a~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~z~0#1| (+ 6 .cse2)) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= 6 .cse2) .cse1)) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|)))) [2022-11-20 10:52:57,547 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-11-20 10:52:57,548 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse4 (* 6 |ULTIMATE.start_main_~n~0#1|))) (let ((.cse2 (<= 0 |ULTIMATE.start_main_~a~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~a~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~z~0#1| (+ 6 .cse4))) (.cse5 (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) .cse2 (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|)) (and .cse0 .cse1 (= |ULTIMATE.start_main_~x~0#1| 1) .cse3 .cse2 (= 6 .cse4) .cse5) (and .cse0 .cse1 .cse3 (<= 1 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~x~0#1| 8) .cse5 (= 19 |ULTIMATE.start_main_~y~0#1|))))) [2022-11-20 10:52:57,548 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse4 (* 6 |ULTIMATE.start_main_~n~0#1|))) (let ((.cse2 (<= 0 |ULTIMATE.start_main_~a~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~a~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~z~0#1| (+ 6 .cse4))) (.cse5 (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) .cse2 (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|)) (and .cse0 .cse1 (= |ULTIMATE.start_main_~x~0#1| 1) .cse3 .cse2 (= 6 .cse4) .cse5) (and .cse0 .cse1 .cse3 (<= 1 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~x~0#1| 8) .cse5 (= 19 |ULTIMATE.start_main_~y~0#1|))))) [2022-11-20 10:52:57,548 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-11-20 10:52:57,548 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-11-20 10:52:57,548 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-11-20 10:52:57,549 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-11-20 10:52:57,549 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-11-20 10:52:57,549 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-11-20 10:52:57,553 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 10:52:57,555 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 10:52:57,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:52:57 BoogieIcfgContainer [2022-11-20 10:52:57,570 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 10:52:57,571 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:52:57,571 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:52:57,571 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:52:57,571 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:52:30" (3/4) ... [2022-11-20 10:52:57,575 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 10:52:57,582 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-20 10:52:57,585 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-20 10:52:57,586 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 10:52:57,586 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 10:52:57,586 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 10:52:57,617 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 10:52:57,617 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:52:57,618 INFO L158 Benchmark]: Toolchain (without parser) took 27575.24ms. Allocated memory was 153.1MB in the beginning and 186.6MB in the end (delta: 33.6MB). Free memory was 123.3MB in the beginning and 138.7MB in the end (delta: -15.5MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. [2022-11-20 10:52:57,618 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 121.6MB. Free memory is still 75.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:52:57,619 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.09ms. Allocated memory is still 153.1MB. Free memory was 122.7MB in the beginning and 112.0MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 10:52:57,619 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.35ms. Allocated memory is still 153.1MB. Free memory was 112.0MB in the beginning and 110.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:52:57,619 INFO L158 Benchmark]: Boogie Preprocessor took 35.79ms. Allocated memory is still 153.1MB. Free memory was 110.8MB in the beginning and 109.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:52:57,620 INFO L158 Benchmark]: RCFGBuilder took 347.75ms. Allocated memory is still 153.1MB. Free memory was 109.2MB in the beginning and 97.5MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 10:52:57,620 INFO L158 Benchmark]: TraceAbstraction took 26828.26ms. Allocated memory was 153.1MB in the beginning and 186.6MB in the end (delta: 33.6MB). Free memory was 96.9MB in the beginning and 141.9MB in the end (delta: -45.0MB). Peak memory consumption was 82.4MB. Max. memory is 16.1GB. [2022-11-20 10:52:57,621 INFO L158 Benchmark]: Witness Printer took 46.88ms. Allocated memory is still 186.6MB. Free memory was 141.9MB in the beginning and 138.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 10:52:57,622 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 121.6MB. Free memory is still 75.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 251.09ms. Allocated memory is still 153.1MB. Free memory was 122.7MB in the beginning and 112.0MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.35ms. Allocated memory is still 153.1MB. Free memory was 112.0MB in the beginning and 110.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.79ms. Allocated memory is still 153.1MB. Free memory was 110.8MB in the beginning and 109.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 347.75ms. Allocated memory is still 153.1MB. Free memory was 109.2MB in the beginning and 97.5MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 26828.26ms. Allocated memory was 153.1MB in the beginning and 186.6MB in the end (delta: 33.6MB). Free memory was 96.9MB in the beginning and 141.9MB in the end (delta: -45.0MB). Peak memory consumption was 82.4MB. Max. memory is 16.1GB. * Witness Printer took 46.88ms. Allocated memory is still 186.6MB. Free memory was 141.9MB in the beginning and 138.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 26.7s, OverallIterations: 12, TraceHistogramMax: 22, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 15.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 304 SdHoareTripleChecker+Valid, 12.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 216 mSDsluCounter, 895 SdHoareTripleChecker+Invalid, 11.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 560 mSDsCounter, 468 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2610 IncrementalHoareTripleChecker+Invalid, 3081 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 468 mSolverCounterUnsat, 335 mSDtfsCounter, 2610 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1015 GetRequests, 865 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=10, InterpolantAutomatonStates: 103, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 9 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 65 PreInvPairs, 101 NumberOfFragments, 1087 HoareAnnotationTreeSize, 65 FomulaSimplifications, 335 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 14 FomulaSimplificationsInter, 2250 FormulaSimplificationTreeSizeReductionInter, 1.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 614 NumberOfCodeBlocks, 574 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 899 ConstructedInterpolants, 0 QuantifiedInterpolants, 4134 SizeOfPredicates, 32 NumberOfNonLiveVariables, 1406 ConjunctsInSsa, 226 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 3402/3622 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (((((((cond == 1 && a <= 1) && y == 1) && n == 0) && 0 <= a) && x == 0) && 6 == z) || ((((((cond == 1 && a <= 1) && x == 1) && z == 6 + 6 * n) && 0 <= a) && 6 == 6 * n) && 3 * n + 3 * (n * n) + n * n * n + 1 == x + y)) || ((((((cond == 1 && a <= 1) && z == 6 + 6 * n) && 1 <= a) && x == 8) && 3 * n + 3 * (n * n) + n * n * n + 1 == x + y) && 19 == y) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-20 10:52:57,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cb6c9c6-6d81-48e6-9aff-b084736bdbb6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE