./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8 --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 9851f41ad4fb2d0ff96507e8e48f0d2886a8de6481eed845b23377b9fa492b45 --- 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-2329fc7 [2022-12-13 20:15:47,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:15:47,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:15:47,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:15:47,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:15:47,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:15:47,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:15:47,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:15:47,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:15:47,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:15:47,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:15:47,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:15:47,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:15:47,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:15:47,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:15:47,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:15:47,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:15:47,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:15:47,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:15:47,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:15:47,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:15:47,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:15:47,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:15:47,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:15:47,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:15:47,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:15:47,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:15:47,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:15:47,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:15:47,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:15:47,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:15:47,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:15:47,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:15:47,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:15:47,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:15:47,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:15:47,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:15:47,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:15:47,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:15:47,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:15:47,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:15:47,272 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 20:15:47,293 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:15:47,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:15:47,293 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:15:47,293 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:15:47,294 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:15:47,294 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:15:47,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:15:47,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:15:47,295 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:15:47,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:15:47,296 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:15:47,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:15:47,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:15:47,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:15:47,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:15:47,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:15:47,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:15:47,297 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:15:47,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:15:47,297 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:15:47,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:15:47,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:15:47,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:15:47,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:15:47,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:15:47,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:15:47,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:15:47,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:15:47,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:15:47,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:15:47,299 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:15:47,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:15:47,299 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:15:47,299 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:15:47,299 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:15:47,299 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9851f41ad4fb2d0ff96507e8e48f0d2886a8de6481eed845b23377b9fa492b45 [2022-12-13 20:15:47,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:15:47,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:15:47,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:15:47,505 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:15:47,506 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:15:47,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c [2022-12-13 20:15:50,068 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:15:50,252 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:15:50,252 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c [2022-12-13 20:15:50,258 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/data/f19545426/b3b45d50aee94319807fd9566f5a9689/FLAG3ebcf5d4a [2022-12-13 20:15:50,659 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/data/f19545426/b3b45d50aee94319807fd9566f5a9689 [2022-12-13 20:15:50,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:15:50,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:15:50,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:15:50,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:15:50,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:15:50,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:15:50" (1/1) ... [2022-12-13 20:15:50,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@767a829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:15:50, skipping insertion in model container [2022-12-13 20:15:50,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:15:50" (1/1) ... [2022-12-13 20:15:50,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:15:50,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:15:50,806 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_c0fc766c-6283-471f-a488-fc5084a882c7/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c[538,551] [2022-12-13 20:15:50,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:15:50,829 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:15:50,838 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_c0fc766c-6283-471f-a488-fc5084a882c7/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c[538,551] [2022-12-13 20:15:50,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:15:50,854 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:15:50,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:15:50 WrapperNode [2022-12-13 20:15:50,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:15:50,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:15:50,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:15:50,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:15:50,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:15:50" (1/1) ... [2022-12-13 20:15:50,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:15:50" (1/1) ... [2022-12-13 20:15:50,878 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2022-12-13 20:15:50,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:15:50,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:15:50,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:15:50,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:15:50,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:15:50" (1/1) ... [2022-12-13 20:15:50,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:15:50" (1/1) ... [2022-12-13 20:15:50,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:15:50" (1/1) ... [2022-12-13 20:15:50,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:15:50" (1/1) ... [2022-12-13 20:15:50,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:15:50" (1/1) ... [2022-12-13 20:15:50,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:15:50" (1/1) ... [2022-12-13 20:15:50,894 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:15:50" (1/1) ... [2022-12-13 20:15:50,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:15:50" (1/1) ... [2022-12-13 20:15:50,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:15:50,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:15:50,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:15:50,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:15:50,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:15:50" (1/1) ... [2022-12-13 20:15:50,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:15:50,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:15:50,924 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:15:50,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:15:50,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:15:50,953 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 20:15:50,953 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 20:15:50,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:15:50,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:15:50,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:15:50,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 20:15:50,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 20:15:51,007 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:15:51,008 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:15:51,102 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:15:51,106 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:15:51,106 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 20:15:51,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:15:51 BoogieIcfgContainer [2022-12-13 20:15:51,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:15:51,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:15:51,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:15:51,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:15:51,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:15:50" (1/3) ... [2022-12-13 20:15:51,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e9ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:15:51, skipping insertion in model container [2022-12-13 20:15:51,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:15:50" (2/3) ... [2022-12-13 20:15:51,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e9ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:15:51, skipping insertion in model container [2022-12-13 20:15:51,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:15:51" (3/3) ... [2022-12-13 20:15:51,113 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound2.c [2022-12-13 20:15:51,127 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:15:51,127 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 20:15:51,166 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:15:51,170 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;@41b39cbd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:15:51,170 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 20:15:51,173 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-13 20:15:51,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 20:15:51,179 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:15:51,179 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:15:51,179 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:15:51,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:15:51,183 INFO L85 PathProgramCache]: Analyzing trace with hash -487550744, now seen corresponding path program 1 times [2022-12-13 20:15:51,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:15:51,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113178703] [2022-12-13 20:15:51,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:15:51,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:15:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:51,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 20:15:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:51,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:15:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:51,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:15:51,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:51,316 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:15:51,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:15:51,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113178703] [2022-12-13 20:15:51,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113178703] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:15:51,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:15:51,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:15:51,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798368044] [2022-12-13 20:15:51,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:15:51,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 20:15:51,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:15:51,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 20:15:51,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:15:51,346 INFO L87 Difference]: Start difference. First operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 20:15:51,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:15:51,364 INFO L93 Difference]: Finished difference Result 63 states and 104 transitions. [2022-12-13 20:15:51,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 20:15:51,365 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-12-13 20:15:51,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:15:51,371 INFO L225 Difference]: With dead ends: 63 [2022-12-13 20:15:51,371 INFO L226 Difference]: Without dead ends: 29 [2022-12-13 20:15:51,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 20:15:51,376 INFO L413 NwaCegarLoop]: 43 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, 43 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 [2022-12-13 20:15:51,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:15:51,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-13 20:15:51,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-12-13 20:15:51,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-13 20:15:51,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2022-12-13 20:15:51,404 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 24 [2022-12-13 20:15:51,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:15:51,404 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2022-12-13 20:15:51,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 20:15:51,405 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2022-12-13 20:15:51,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 20:15:51,406 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:15:51,406 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:15:51,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:15:51,406 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:15:51,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:15:51,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1636258074, now seen corresponding path program 1 times [2022-12-13 20:15:51,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:15:51,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819645126] [2022-12-13 20:15:51,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:15:51,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:15:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:51,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 20:15:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:51,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:15:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:51,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:15:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:51,548 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:15:51,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:15:51,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819645126] [2022-12-13 20:15:51,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819645126] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:15:51,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:15:51,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:15:51,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905421058] [2022-12-13 20:15:51,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:15:51,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:15:51,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:15:51,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:15:51,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:15:51,551 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 20:15:51,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:15:51,596 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2022-12-13 20:15:51,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:15:51,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2022-12-13 20:15:51,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:15:51,597 INFO L225 Difference]: With dead ends: 42 [2022-12-13 20:15:51,597 INFO L226 Difference]: Without dead ends: 40 [2022-12-13 20:15:51,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:15:51,598 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:15:51,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 128 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:15:51,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-12-13 20:15:51,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2022-12-13 20:15:51,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-13 20:15:51,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2022-12-13 20:15:51,605 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 24 [2022-12-13 20:15:51,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:15:51,606 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2022-12-13 20:15:51,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 20:15:51,606 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2022-12-13 20:15:51,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-13 20:15:51,607 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:15:51,607 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:15:51,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:15:51,608 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:15:51,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:15:51,608 INFO L85 PathProgramCache]: Analyzing trace with hash 906849917, now seen corresponding path program 1 times [2022-12-13 20:15:51,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:15:51,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994626903] [2022-12-13 20:15:51,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:15:51,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:15:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:51,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 20:15:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:51,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 20:15:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:51,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 20:15:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:51,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 20:15:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:51,742 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:15:51,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:15:51,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994626903] [2022-12-13 20:15:51,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994626903] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:15:51,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:15:51,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 20:15:51,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089700143] [2022-12-13 20:15:51,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:15:51,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:15:51,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:15:51,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:15:51,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:15:51,745 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 20:15:51,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:15:51,806 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2022-12-13 20:15:51,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:15:51,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-12-13 20:15:51,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:15:51,808 INFO L225 Difference]: With dead ends: 46 [2022-12-13 20:15:51,808 INFO L226 Difference]: Without dead ends: 44 [2022-12-13 20:15:51,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 20:15:51,810 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:15:51,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 123 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:15:51,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-12-13 20:15:51,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-12-13 20:15:51,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-12-13 20:15:51,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2022-12-13 20:15:51,821 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 29 [2022-12-13 20:15:51,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:15:51,822 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2022-12-13 20:15:51,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 20:15:51,822 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2022-12-13 20:15:51,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-13 20:15:51,823 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:15:51,823 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:15:51,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:15:51,824 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:15:51,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:15:51,824 INFO L85 PathProgramCache]: Analyzing trace with hash 710995206, now seen corresponding path program 1 times [2022-12-13 20:15:51,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:15:51,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321621264] [2022-12-13 20:15:51,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:15:51,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:15:51,844 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:15:51,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503710084] [2022-12-13 20:15:51,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:15:51,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:15:51,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:15:51,846 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:15:51,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:15:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:51,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 20:15:51,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:15:52,152 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 20:15:52,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:15:52,298 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 20:15:52,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:15:52,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321621264] [2022-12-13 20:15:52,298 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:15:52,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503710084] [2022-12-13 20:15:52,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503710084] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:15:52,299 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:15:52,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 16 [2022-12-13 20:15:52,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661164881] [2022-12-13 20:15:52,299 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:15:52,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 20:15:52,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:15:52,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 20:15:52,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-12-13 20:15:52,301 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 16 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2022-12-13 20:15:52,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:15:52,574 INFO L93 Difference]: Finished difference Result 72 states and 93 transitions. [2022-12-13 20:15:52,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 20:15:52,575 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) Word has length 34 [2022-12-13 20:15:52,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:15:52,576 INFO L225 Difference]: With dead ends: 72 [2022-12-13 20:15:52,577 INFO L226 Difference]: Without dead ends: 57 [2022-12-13 20:15:52,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-12-13 20:15:52,578 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 46 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:15:52,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 128 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:15:52,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-12-13 20:15:52,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2022-12-13 20:15:52,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-13 20:15:52,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2022-12-13 20:15:52,589 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 34 [2022-12-13 20:15:52,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:15:52,589 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2022-12-13 20:15:52,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2022-12-13 20:15:52,589 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2022-12-13 20:15:52,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-12-13 20:15:52,590 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:15:52,590 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:15:52,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:15:52,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:15:52,792 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:15:52,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:15:52,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1829555286, now seen corresponding path program 1 times [2022-12-13 20:15:52,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:15:52,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546990060] [2022-12-13 20:15:52,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:15:52,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:15:52,836 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:15:52,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [928766557] [2022-12-13 20:15:52,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:15:52,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:15:52,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:15:52,840 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:15:52,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 20:15:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:52,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 20:15:52,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:15:53,176 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 20:15:53,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:15:53,349 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 20:15:53,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:15:53,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546990060] [2022-12-13 20:15:53,349 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:15:53,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928766557] [2022-12-13 20:15:53,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928766557] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:15:53,350 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:15:53,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2022-12-13 20:15:53,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18301283] [2022-12-13 20:15:53,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:15:53,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 20:15:53,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:15:53,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 20:15:53,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-12-13 20:15:53,352 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 13 states have internal predecessors, (30), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-12-13 20:15:53,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:15:53,599 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2022-12-13 20:15:53,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 20:15:53,599 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 13 states have internal predecessors, (30), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) Word has length 41 [2022-12-13 20:15:53,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:15:53,600 INFO L225 Difference]: With dead ends: 69 [2022-12-13 20:15:53,600 INFO L226 Difference]: Without dead ends: 62 [2022-12-13 20:15:53,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2022-12-13 20:15:53,602 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 43 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:15:53,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 112 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:15:53,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-12-13 20:15:53,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-12-13 20:15:53,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 38 states have (on average 1.105263157894737) internal successors, (42), 41 states have internal predecessors, (42), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-13 20:15:53,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2022-12-13 20:15:53,620 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 41 [2022-12-13 20:15:53,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:15:53,621 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2022-12-13 20:15:53,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 13 states have internal predecessors, (30), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-12-13 20:15:53,621 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2022-12-13 20:15:53,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 20:15:53,623 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:15:53,623 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:15:53,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 20:15:53,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:15:53,824 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:15:53,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:15:53,824 INFO L85 PathProgramCache]: Analyzing trace with hash -677073599, now seen corresponding path program 1 times [2022-12-13 20:15:53,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:15:53,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274456861] [2022-12-13 20:15:53,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:15:53,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:15:53,835 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:15:53,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851747547] [2022-12-13 20:15:53,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:15:53,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:15:53,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:15:53,836 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:15:53,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 20:15:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:53,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:15:53,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:15:53,912 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-12-13 20:15:53,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 20:15:53,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:15:53,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274456861] [2022-12-13 20:15:53,912 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:15:53,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851747547] [2022-12-13 20:15:53,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851747547] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:15:53,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:15:53,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:15:53,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217420910] [2022-12-13 20:15:53,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:15:53,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:15:53,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:15:53,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:15:53,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:15:53,915 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 20:15:53,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:15:53,948 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2022-12-13 20:15:53,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:15:53,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 69 [2022-12-13 20:15:53,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:15:53,950 INFO L225 Difference]: With dead ends: 70 [2022-12-13 20:15:53,950 INFO L226 Difference]: Without dead ends: 63 [2022-12-13 20:15:53,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:15:53,951 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 4 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:15:53,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 67 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:15:53,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-12-13 20:15:53,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-12-13 20:15:53,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 41 states have internal predecessors, (43), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-13 20:15:53,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2022-12-13 20:15:53,961 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 69 [2022-12-13 20:15:53,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:15:53,961 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2022-12-13 20:15:53,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 20:15:53,962 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2022-12-13 20:15:53,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-13 20:15:53,962 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:15:53,962 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:15:53,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 20:15:54,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:15:54,163 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:15:54,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:15:54,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1754894755, now seen corresponding path program 1 times [2022-12-13 20:15:54,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:15:54,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043011422] [2022-12-13 20:15:54,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:15:54,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:15:54,173 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:15:54,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2058605791] [2022-12-13 20:15:54,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:15:54,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:15:54,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:15:54,175 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:15:54,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 20:15:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:15:54,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-13 20:15:54,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:15:54,869 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 42 proven. 8 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-12-13 20:15:54,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:16:32,447 WARN L233 SmtUtils]: Spent 24.88s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 20:17:56,205 WARN L233 SmtUtils]: Spent 28.90s on a formula simplification that was a NOOP. DAG size: 50 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 20:19:24,623 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 36 proven. 8 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-12-13 20:19:24,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:19:24,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043011422] [2022-12-13 20:19:24,623 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:19:24,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058605791] [2022-12-13 20:19:24,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058605791] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:19:24,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:19:24,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 23 [2022-12-13 20:19:24,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432093971] [2022-12-13 20:19:24,624 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:19:24,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 20:19:24,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:19:24,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 20:19:24,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=420, Unknown=1, NotChecked=0, Total=506 [2022-12-13 20:19:24,626 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 19 states have internal predecessors, (40), 9 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 10 states have call predecessors, (20), 7 states have call successors, (20) [2022-12-13 20:19:28,379 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 [] [2022-12-13 20:19:34,630 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 [] [2022-12-13 20:20:09,781 WARN L233 SmtUtils]: Spent 33.25s on a formula simplification that was a NOOP. DAG size: 61 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 20:20:23,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:20:23,107 INFO L93 Difference]: Finished difference Result 123 states and 153 transitions. [2022-12-13 20:20:23,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 20:20:23,108 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 19 states have internal predecessors, (40), 9 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 10 states have call predecessors, (20), 7 states have call successors, (20) Word has length 71 [2022-12-13 20:20:23,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:20:23,109 INFO L225 Difference]: With dead ends: 123 [2022-12-13 20:20:23,109 INFO L226 Difference]: Without dead ends: 105 [2022-12-13 20:20:23,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 104.7s TimeCoverageRelationStatistics Valid=228, Invalid=1031, Unknown=1, NotChecked=0, Total=1260 [2022-12-13 20:20:23,110 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 72 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 116 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-12-13 20:20:23,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 155 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 678 Invalid, 2 Unknown, 0 Unchecked, 10.6s Time] [2022-12-13 20:20:23,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-12-13 20:20:23,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 91. [2022-12-13 20:20:23,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 60 states have internal predecessors, (62), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (22), 19 states have call predecessors, (22), 22 states have call successors, (22) [2022-12-13 20:20:23,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 107 transitions. [2022-12-13 20:20:23,126 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 107 transitions. Word has length 71 [2022-12-13 20:20:23,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:20:23,126 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 107 transitions. [2022-12-13 20:20:23,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 19 states have internal predecessors, (40), 9 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 10 states have call predecessors, (20), 7 states have call successors, (20) [2022-12-13 20:20:23,127 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 107 transitions. [2022-12-13 20:20:23,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-13 20:20:23,127 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:20:23,128 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:20:23,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 20:20:23,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:20:23,329 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:20:23,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:20:23,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1620227847, now seen corresponding path program 1 times [2022-12-13 20:20:23,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:20:23,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172191345] [2022-12-13 20:20:23,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:20:23,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:20:23,355 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:20:23,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [191833398] [2022-12-13 20:20:23,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:20:23,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:20:23,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:20:23,360 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:20:23,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 20:20:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:20:23,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 20:20:23,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:20:23,920 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 26 proven. 9 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-12-13 20:20:23,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:20:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-12-13 20:20:24,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:20:24,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172191345] [2022-12-13 20:20:24,973 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:20:24,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191833398] [2022-12-13 20:20:24,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191833398] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:20:24,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:20:24,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2022-12-13 20:20:24,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375536085] [2022-12-13 20:20:24,974 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:20:24,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 20:20:24,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:20:24,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 20:20:24,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-12-13 20:20:24,976 INFO L87 Difference]: Start difference. First operand 91 states and 107 transitions. Second operand has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) [2022-12-13 20:20:27,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:20:27,485 INFO L93 Difference]: Finished difference Result 127 states and 148 transitions. [2022-12-13 20:20:27,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 20:20:27,486 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) Word has length 82 [2022-12-13 20:20:27,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:20:27,487 INFO L225 Difference]: With dead ends: 127 [2022-12-13 20:20:27,487 INFO L226 Difference]: Without dead ends: 97 [2022-12-13 20:20:27,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=144, Invalid=668, Unknown=0, NotChecked=0, Total=812 [2022-12-13 20:20:27,488 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 31 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 20:20:27,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 222 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 20:20:27,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-12-13 20:20:27,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 76. [2022-12-13 20:20:27,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 50 states have internal predecessors, (52), 17 states have call successors, (17), 10 states have call predecessors, (17), 10 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-12-13 20:20:27,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2022-12-13 20:20:27,506 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 82 [2022-12-13 20:20:27,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:20:27,507 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2022-12-13 20:20:27,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 11 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) [2022-12-13 20:20:27,507 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2022-12-13 20:20:27,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-13 20:20:27,508 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:20:27,508 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:20:27,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 20:20:27,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 20:20:27,710 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:20:27,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:20:27,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1888027627, now seen corresponding path program 2 times [2022-12-13 20:20:27,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:20:27,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467441207] [2022-12-13 20:20:27,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:20:27,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:20:27,734 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:20:27,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [622145274] [2022-12-13 20:20:27,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:20:27,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:20:27,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:20:27,738 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:20:27,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 20:20:27,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:20:27,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:20:27,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 20:20:27,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:20:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-12-13 20:20:27,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:20:27,882 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-12-13 20:20:27,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:20:27,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467441207] [2022-12-13 20:20:27,883 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:20:27,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622145274] [2022-12-13 20:20:27,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622145274] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:20:27,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:20:27,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2022-12-13 20:20:27,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497708248] [2022-12-13 20:20:27,883 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:20:27,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:20:27,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:20:27,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:20:27,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:20:27,885 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-12-13 20:20:27,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:20:27,981 INFO L93 Difference]: Finished difference Result 108 states and 128 transitions. [2022-12-13 20:20:27,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:20:27,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 84 [2022-12-13 20:20:27,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:20:27,983 INFO L225 Difference]: With dead ends: 108 [2022-12-13 20:20:27,983 INFO L226 Difference]: Without dead ends: 81 [2022-12-13 20:20:27,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:20:27,984 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:20:27,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:20:27,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-12-13 20:20:27,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-12-13 20:20:27,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 50 states have (on average 1.08) internal successors, (54), 52 states have internal predecessors, (54), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-12-13 20:20:28,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2022-12-13 20:20:28,000 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 84 [2022-12-13 20:20:28,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:20:28,000 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2022-12-13 20:20:28,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-12-13 20:20:28,000 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2022-12-13 20:20:28,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 20:20:28,001 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:20:28,001 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:20:28,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 20:20:28,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:20:28,203 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:20:28,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:20:28,203 INFO L85 PathProgramCache]: Analyzing trace with hash -2103086134, now seen corresponding path program 3 times [2022-12-13 20:20:28,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:20:28,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451563882] [2022-12-13 20:20:28,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:20:28,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:20:28,216 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:20:28,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12665880] [2022-12-13 20:20:28,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 20:20:28,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:20:28,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:20:28,219 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:20:28,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 20:20:28,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 20:20:28,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:20:28,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 20:20:28,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:20:29,495 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 33 proven. 23 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-12-13 20:20:29,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:20:30,375 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 33 proven. 23 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-12-13 20:20:30,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:20:30,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451563882] [2022-12-13 20:20:30,375 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:20:30,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12665880] [2022-12-13 20:20:30,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12665880] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:20:30,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:20:30,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2022-12-13 20:20:30,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477586049] [2022-12-13 20:20:30,376 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:20:30,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 20:20:30,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:20:30,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 20:20:30,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-12-13 20:20:30,378 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 11 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 11 states have call predecessors, (30), 10 states have call successors, (30) [2022-12-13 20:20:31,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:20:31,701 INFO L93 Difference]: Finished difference Result 142 states and 166 transitions. [2022-12-13 20:20:31,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 20:20:31,701 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 11 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 11 states have call predecessors, (30), 10 states have call successors, (30) Word has length 101 [2022-12-13 20:20:31,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:20:31,702 INFO L225 Difference]: With dead ends: 142 [2022-12-13 20:20:31,702 INFO L226 Difference]: Without dead ends: 90 [2022-12-13 20:20:31,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 181 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2022-12-13 20:20:31,703 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 73 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 20:20:31,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 231 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 20:20:31,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-12-13 20:20:31,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2022-12-13 20:20:31,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 53 states have internal predecessors, (54), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-12-13 20:20:31,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2022-12-13 20:20:31,722 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 101 [2022-12-13 20:20:31,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:20:31,722 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2022-12-13 20:20:31,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 11 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 11 states have call predecessors, (30), 10 states have call successors, (30) [2022-12-13 20:20:31,722 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2022-12-13 20:20:31,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-13 20:20:31,723 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:20:31,723 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:20:31,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 20:20:31,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 20:20:31,924 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:20:31,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:20:31,924 INFO L85 PathProgramCache]: Analyzing trace with hash 845989083, now seen corresponding path program 1 times [2022-12-13 20:20:31,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:20:31,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230997185] [2022-12-13 20:20:31,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:20:31,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:20:31,936 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:20:31,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1682509047] [2022-12-13 20:20:31,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:20:31,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:20:31,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:20:31,938 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:20:31,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 20:20:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:20:32,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-13 20:20:32,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:20:32,801 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 27 proven. 72 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2022-12-13 20:20:32,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:21:05,355 WARN L233 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 120 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 20:21:18,241 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 27 proven. 66 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-12-13 20:21:18,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:21:18,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230997185] [2022-12-13 20:21:18,242 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:21:18,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682509047] [2022-12-13 20:21:18,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682509047] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:21:18,242 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:21:18,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14] total 29 [2022-12-13 20:21:18,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773795173] [2022-12-13 20:21:18,242 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:21:18,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 20:21:18,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:21:18,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 20:21:18,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=672, Unknown=0, NotChecked=0, Total=812 [2022-12-13 20:21:18,244 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 26 states have internal predecessors, (51), 16 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 14 states have call predecessors, (34), 16 states have call successors, (34) [2022-12-13 20:21:20,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:21:20,722 INFO L93 Difference]: Finished difference Result 105 states and 116 transitions. [2022-12-13 20:21:20,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 20:21:20,722 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 26 states have internal predecessors, (51), 16 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 14 states have call predecessors, (34), 16 states have call successors, (34) Word has length 106 [2022-12-13 20:21:20,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:21:20,724 INFO L225 Difference]: With dead ends: 105 [2022-12-13 20:21:20,724 INFO L226 Difference]: Without dead ends: 85 [2022-12-13 20:21:20,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=254, Invalid=1228, Unknown=0, NotChecked=0, Total=1482 [2022-12-13 20:21:20,725 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 45 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:21:20,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 214 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 20:21:20,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-12-13 20:21:20,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-12-13 20:21:20,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 54 states have (on average 1.0) internal successors, (54), 54 states have internal predecessors, (54), 19 states have call successors, (19), 12 states have call predecessors, (19), 11 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-12-13 20:21:20,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2022-12-13 20:21:20,749 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 106 [2022-12-13 20:21:20,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:21:20,749 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2022-12-13 20:21:20,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 26 states have internal predecessors, (51), 16 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 14 states have call predecessors, (34), 16 states have call successors, (34) [2022-12-13 20:21:20,749 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2022-12-13 20:21:20,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-13 20:21:20,750 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:21:20,750 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:21:20,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 20:21:20,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 20:21:20,952 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:21:20,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:21:20,954 INFO L85 PathProgramCache]: Analyzing trace with hash -419411602, now seen corresponding path program 1 times [2022-12-13 20:21:20,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:21:20,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546149155] [2022-12-13 20:21:20,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:21:20,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:21:20,965 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 20:21:20,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1687889214] [2022-12-13 20:21:20,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:21:20,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:21:20,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:21:20,966 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:21:20,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 20:21:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:21:21,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 49 conjunts are in the unsatisfiable core [2022-12-13 20:21:21,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:21:21,982 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 29 proven. 77 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2022-12-13 20:21:21,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:21:45,177 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 29 proven. 71 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2022-12-13 20:21:45,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:21:45,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546149155] [2022-12-13 20:21:45,177 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 20:21:45,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687889214] [2022-12-13 20:21:45,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687889214] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:21:45,177 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:21:45,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 29 [2022-12-13 20:21:45,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4779323] [2022-12-13 20:21:45,177 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 20:21:45,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-13 20:21:45,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:21:45,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-13 20:21:45,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2022-12-13 20:21:45,179 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 29 states, 27 states have (on average 1.962962962962963) internal successors, (53), 27 states have internal predecessors, (53), 17 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (36), 14 states have call predecessors, (36), 15 states have call successors, (36) [2022-12-13 20:21:53,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:21:53,686 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2022-12-13 20:21:53,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 20:21:53,686 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 1.962962962962963) internal successors, (53), 27 states have internal predecessors, (53), 17 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (36), 14 states have call predecessors, (36), 15 states have call successors, (36) Word has length 112 [2022-12-13 20:21:53,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:21:53,687 INFO L225 Difference]: With dead ends: 85 [2022-12-13 20:21:53,687 INFO L226 Difference]: Without dead ends: 0 [2022-12-13 20:21:53,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=178, Invalid=814, Unknown=0, NotChecked=0, Total=992 [2022-12-13 20:21:53,688 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 14 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-12-13 20:21:53,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 206 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-12-13 20:21:53,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-13 20:21:53,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-13 20:21:53,688 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) [2022-12-13 20:21:53,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 20:21:53,688 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 112 [2022-12-13 20:21:53,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:21:53,688 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 20:21:53,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 1.962962962962963) internal successors, (53), 27 states have internal predecessors, (53), 17 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (36), 14 states have call predecessors, (36), 15 states have call successors, (36) [2022-12-13 20:21:53,689 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-13 20:21:53,689 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-13 20:21:53,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 20:21:53,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 20:21:53,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 20:21:53,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-13 20:22:06,881 INFO L895 garLoopResultBuilder]: At program point L60(line 60) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse0) (<= 1 .cse0) (<= .cse0 2))) [2022-12-13 20:22:06,881 INFO L899 garLoopResultBuilder]: For program point L48(lines 46 58) no Hoare annotation was computed. [2022-12-13 20:22:06,881 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 22 63) the Hoare annotation is: true [2022-12-13 20:22:06,881 INFO L895 garLoopResultBuilder]: At program point L36-2(lines 36 44) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse3 (<= .cse1 2)) (.cse2 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse4 (= |ULTIMATE.start_main_~r~0#1| .cse1))) (or (let ((.cse0 (div |ULTIMATE.start_main_~d~0#1| 2))) (and (= (+ .cse0 .cse1) (+ (* (div |ULTIMATE.start_main_~p~0#1| 2) .cse2) (* |ULTIMATE.start_main_~q~0#1| .cse2) |ULTIMATE.start_main_~r~0#1|)) (<= 1 .cse2) .cse3 (<= 2 |ULTIMATE.start_main_~p~0#1|) (= (* |ULTIMATE.start_main_~p~0#1| .cse2) |ULTIMATE.start_main_~d~0#1|) .cse4 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (<= .cse0 |ULTIMATE.start_main_~r~0#1|))) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse2) (<= 1 (mod |ULTIMATE.start_main_~d~0#1| 4294967296)) .cse3 (= |ULTIMATE.start_main_~q~0#1| 0) (<= .cse2 2) .cse4)))) [2022-12-13 20:22:06,881 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-13 20:22:06,881 INFO L899 garLoopResultBuilder]: For program point L61(line 61) no Hoare annotation was computed. [2022-12-13 20:22:06,881 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-13 20:22:06,881 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 2) [2022-12-13 20:22:06,881 INFO L895 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (and (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 2) (<= (mod |ULTIMATE.start_main_~B~0#1| 4294967296) 2)) [2022-12-13 20:22:06,882 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse3 (<= .cse1 2)) (.cse2 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse4 (= |ULTIMATE.start_main_~r~0#1| .cse1))) (or (let ((.cse0 (div |ULTIMATE.start_main_~d~0#1| 2))) (and (= (+ .cse0 .cse1) (+ (* (div |ULTIMATE.start_main_~p~0#1| 2) .cse2) (* |ULTIMATE.start_main_~q~0#1| .cse2) |ULTIMATE.start_main_~r~0#1|)) (<= 1 .cse2) .cse3 (<= 2 |ULTIMATE.start_main_~p~0#1|) (= (* |ULTIMATE.start_main_~p~0#1| .cse2) |ULTIMATE.start_main_~d~0#1|) .cse4 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (<= .cse0 |ULTIMATE.start_main_~r~0#1|))) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse2) (<= 1 (mod |ULTIMATE.start_main_~d~0#1| 4294967296)) .cse3 (= |ULTIMATE.start_main_~q~0#1| 0) (<= .cse2 2) .cse4)))) [2022-12-13 20:22:06,882 INFO L895 garLoopResultBuilder]: At program point L37-1(line 37) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse3 (<= .cse1 2)) (.cse2 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse4 (= |ULTIMATE.start_main_~r~0#1| .cse1))) (or (let ((.cse0 (div |ULTIMATE.start_main_~d~0#1| 2))) (and (= (+ .cse0 .cse1) (+ (* (div |ULTIMATE.start_main_~p~0#1| 2) .cse2) (* |ULTIMATE.start_main_~q~0#1| .cse2) |ULTIMATE.start_main_~r~0#1|)) (<= 1 .cse2) .cse3 (<= 2 |ULTIMATE.start_main_~p~0#1|) (= (* |ULTIMATE.start_main_~p~0#1| .cse2) |ULTIMATE.start_main_~d~0#1|) .cse4 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (<= .cse0 |ULTIMATE.start_main_~r~0#1|))) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse2) (<= 1 (mod |ULTIMATE.start_main_~d~0#1| 4294967296)) .cse3 (= |ULTIMATE.start_main_~q~0#1| 0) (<= .cse2 2) .cse4)))) [2022-12-13 20:22:06,882 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-13 20:22:06,882 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2022-12-13 20:22:06,882 INFO L899 garLoopResultBuilder]: For program point L54(lines 54 57) no Hoare annotation was computed. [2022-12-13 20:22:06,882 INFO L895 garLoopResultBuilder]: At program point L54-2(lines 46 58) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse13 (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse20 (div |ULTIMATE.start_main_~d~0#1| 2)) (.cse7 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse19 (* |ULTIMATE.start_main_~q~0#1| .cse1)) (.cse10 (* 2 .cse1))) (let ((.cse6 (- |ULTIMATE.start_main_~r~0#1|)) (.cse8 (<= 1 .cse10)) (.cse9 (= 2 |ULTIMATE.start_main_~p~0#1|)) (.cse14 (not (<= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|))) (.cse15 (= (+ .cse20 .cse7) (+ (* (div |ULTIMATE.start_main_~p~0#1| 2) .cse1) .cse19 |ULTIMATE.start_main_~r~0#1|))) (.cse4 (<= .cse7 2)) (.cse16 (= (* |ULTIMATE.start_main_~p~0#1| .cse1) |ULTIMATE.start_main_~d~0#1|)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| .cse7)) (.cse17 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0)) (.cse18 (<= .cse20 |ULTIMATE.start_main_~r~0#1|)) (.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse2 (<= .cse1 2)) (.cse5 (= (+ .cse19 |ULTIMATE.start_main_~r~0#1|) .cse7)) (.cse12 (= .cse13 .cse7))) (or (and .cse0 (= |ULTIMATE.start_main_~d~0#1| .cse1) (= |ULTIMATE.start_main_~q~0#1| 0) .cse2 .cse3 (<= (+ |ULTIMATE.start_main_~r~0#1| 1) .cse1)) (and .cse0 .cse4 (<= 0 |ULTIMATE.start_main_~r~0#1|) (= 2 |ULTIMATE.start_main_~q~0#1|) .cse5 (= |ULTIMATE.start_main_~d~0#1| (div (+ .cse6 .cse7) 2)) .cse8) (and .cse9 (= .cse10 |ULTIMATE.start_main_~d~0#1|) .cse11 (<= (+ (* (div (+ (- 1) .cse6 (- |ULTIMATE.start_main_~d~0#1|)) 4294967296) 4294967296) 4294967294 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 0) .cse12 (<= .cse10 .cse13) .cse8) (and .cse14 .cse15 .cse9 .cse16 .cse2 .cse3 .cse17 .cse18) (and .cse14 .cse15 .cse4 .cse16 .cse2 .cse3 .cse17 .cse18) (and .cse0 (< .cse7 (* 2 |ULTIMATE.start_main_~d~0#1|)) .cse11 (<= |ULTIMATE.start_main_~d~0#1| .cse7) .cse2 .cse5 .cse12))))) [2022-12-13 20:22:06,882 INFO L895 garLoopResultBuilder]: At program point L46-1(lines 46 58) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse1 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse4 (= |ULTIMATE.start_main_~d~0#1| .cse0)) (.cse5 (<= 1 .cse0)) (.cse6 (<= .cse0 2)) (.cse2 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (or (let ((.cse3 (- |ULTIMATE.start_main_~r~0#1|))) (and (<= 0 (+ (div (+ (- .cse0) (- 2147483647)) 2147483648) 1)) .cse1 (<= .cse2 2) (<= (+ (* 2 |ULTIMATE.start_main_~r~0#1|) 1) .cse2) (<= 0 |ULTIMATE.start_main_~r~0#1|) (= 2 |ULTIMATE.start_main_~q~0#1|) (= |ULTIMATE.start_main_~d~0#1| (div (+ .cse3 .cse2) 2)) (<= (+ 2 |ULTIMATE.start_main_~r~0#1| (* (div (+ (- 1) .cse3 .cse2) 2) 2)) .cse2) (<= 1 (* 2 .cse0)))) (and .cse1 .cse4 .cse5 (= |ULTIMATE.start_main_~q~0#1| 0) .cse6 (= |ULTIMATE.start_main_~r~0#1| .cse2) (<= (+ |ULTIMATE.start_main_~r~0#1| 1) .cse0)) (and .cse1 .cse4 .cse5 (< .cse2 (* 2 |ULTIMATE.start_main_~d~0#1|)) (<= |ULTIMATE.start_main_~d~0#1| .cse2) .cse6 (= (+ (* |ULTIMATE.start_main_~q~0#1| .cse0) |ULTIMATE.start_main_~r~0#1|) .cse2) (= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) .cse2))))) [2022-12-13 20:22:06,882 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-13 20:22:06,883 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse3 (<= .cse1 2)) (.cse2 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse4 (= |ULTIMATE.start_main_~r~0#1| .cse1))) (or (let ((.cse0 (div |ULTIMATE.start_main_~d~0#1| 2))) (and (= (+ .cse0 .cse1) (+ (* (div |ULTIMATE.start_main_~p~0#1| 2) .cse2) (* |ULTIMATE.start_main_~q~0#1| .cse2) |ULTIMATE.start_main_~r~0#1|)) (<= 1 .cse2) .cse3 (<= 2 |ULTIMATE.start_main_~p~0#1|) (= (* |ULTIMATE.start_main_~p~0#1| .cse2) |ULTIMATE.start_main_~d~0#1|) .cse4 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (<= .cse0 |ULTIMATE.start_main_~r~0#1|))) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse2) (<= 1 (mod |ULTIMATE.start_main_~d~0#1| 4294967296)) .cse3 (= |ULTIMATE.start_main_~q~0#1| 0) (<= .cse2 2) .cse4)))) [2022-12-13 20:22:06,883 INFO L902 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: true [2022-12-13 20:22:06,883 INFO L899 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2022-12-13 20:22:06,883 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse13 (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse20 (div |ULTIMATE.start_main_~d~0#1| 2)) (.cse7 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse19 (* |ULTIMATE.start_main_~q~0#1| .cse1)) (.cse10 (* 2 .cse1))) (let ((.cse6 (- |ULTIMATE.start_main_~r~0#1|)) (.cse8 (<= 1 .cse10)) (.cse9 (= 2 |ULTIMATE.start_main_~p~0#1|)) (.cse14 (not (<= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|))) (.cse15 (= (+ .cse20 .cse7) (+ (* (div |ULTIMATE.start_main_~p~0#1| 2) .cse1) .cse19 |ULTIMATE.start_main_~r~0#1|))) (.cse4 (<= .cse7 2)) (.cse16 (= (* |ULTIMATE.start_main_~p~0#1| .cse1) |ULTIMATE.start_main_~d~0#1|)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| .cse7)) (.cse17 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0)) (.cse18 (<= .cse20 |ULTIMATE.start_main_~r~0#1|)) (.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse2 (<= .cse1 2)) (.cse5 (= (+ .cse19 |ULTIMATE.start_main_~r~0#1|) .cse7)) (.cse12 (= .cse13 .cse7))) (or (and .cse0 (= |ULTIMATE.start_main_~d~0#1| .cse1) (= |ULTIMATE.start_main_~q~0#1| 0) .cse2 .cse3 (<= (+ |ULTIMATE.start_main_~r~0#1| 1) .cse1)) (and .cse0 .cse4 (<= 0 |ULTIMATE.start_main_~r~0#1|) (= 2 |ULTIMATE.start_main_~q~0#1|) .cse5 (= |ULTIMATE.start_main_~d~0#1| (div (+ .cse6 .cse7) 2)) .cse8) (and .cse9 (= .cse10 |ULTIMATE.start_main_~d~0#1|) .cse11 (<= (+ (* (div (+ (- 1) .cse6 (- |ULTIMATE.start_main_~d~0#1|)) 4294967296) 4294967296) 4294967294 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 0) .cse12 (<= .cse10 .cse13) .cse8) (and .cse14 .cse15 .cse9 .cse16 .cse2 .cse3 .cse17 .cse18) (and .cse14 .cse15 .cse4 .cse16 .cse2 .cse3 .cse17 .cse18) (and .cse0 (< .cse7 (* 2 |ULTIMATE.start_main_~d~0#1|)) .cse11 (<= |ULTIMATE.start_main_~d~0#1| .cse7) .cse2 .cse5 .cse12))))) [2022-12-13 20:22:06,883 INFO L895 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse18 (div |ULTIMATE.start_main_~d~0#1| 2)) (.cse12 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse20 (* |ULTIMATE.start_main_~q~0#1| .cse1)) (.cse19 (* |ULTIMATE.start_main_~p~0#1| .cse1))) (let ((.cse8 (- |ULTIMATE.start_main_~r~0#1|)) (.cse4 (<= 1 |ULTIMATE.start_main_~p~0#1|)) (.cse5 (= (+ |ULTIMATE.start_main_~d~0#1| .cse12) (+ .cse20 .cse19 |ULTIMATE.start_main_~r~0#1|))) (.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse6 (<= 1 .cse1)) (.cse7 (<= |ULTIMATE.start_main_~d~0#1| .cse12)) (.cse9 (= (+ .cse20 |ULTIMATE.start_main_~r~0#1|) .cse12)) (.cse10 (= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) .cse12)) (.cse13 (not (<= |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|))) (.cse14 (= (+ .cse18 .cse12) (+ (* (div |ULTIMATE.start_main_~p~0#1| 2) .cse1) .cse20 |ULTIMATE.start_main_~r~0#1|))) (.cse11 (<= .cse12 2)) (.cse15 (= .cse19 |ULTIMATE.start_main_~d~0#1|)) (.cse2 (<= .cse1 2)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| .cse12)) (.cse16 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0)) (.cse17 (<= .cse18 |ULTIMATE.start_main_~r~0#1|))) (or (and .cse0 (= |ULTIMATE.start_main_~d~0#1| .cse1) (= |ULTIMATE.start_main_~q~0#1| 0) .cse2 .cse3 (<= (+ |ULTIMATE.start_main_~r~0#1| 1) .cse1)) (and .cse4 .cse5 .cse6 .cse7 (<= (+ (* (div (+ (- 1) .cse8 (- |ULTIMATE.start_main_~d~0#1|)) 4294967296) 4294967296) 4294967294 |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) 0) .cse2 .cse9 .cse10 (<= (+ 2 (* 2 (div (+ (- 1) |ULTIMATE.start_main_~d~0#1|) 2))) |ULTIMATE.start_main_~d~0#1|)) (and .cse0 .cse11 (<= 0 |ULTIMATE.start_main_~r~0#1|) (= 2 |ULTIMATE.start_main_~q~0#1|) .cse9 (= |ULTIMATE.start_main_~d~0#1| (div (+ .cse8 .cse12) 2)) (<= 1 (* 2 .cse1))) (and .cse4 .cse5 .cse0 .cse6 (< .cse12 (* 2 |ULTIMATE.start_main_~d~0#1|)) .cse7 .cse2 .cse9 .cse10) (and .cse13 .cse14 (= 2 |ULTIMATE.start_main_~p~0#1|) .cse15 .cse2 .cse3 .cse16 .cse17) (and .cse13 .cse14 .cse11 .cse15 .cse2 .cse3 .cse16 .cse17))))) [2022-12-13 20:22:06,883 INFO L899 garLoopResultBuilder]: For program point L39(lines 36 44) no Hoare annotation was computed. [2022-12-13 20:22:06,884 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-12-13 20:22:06,884 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2022-12-13 20:22:06,884 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 13) the Hoare annotation is: true [2022-12-13 20:22:06,884 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2022-12-13 20:22:06,884 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-12-13 20:22:06,884 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-12-13 20:22:06,884 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-12-13 20:22:06,884 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-12-13 20:22:06,884 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2022-12-13 20:22:06,884 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-12-13 20:22:06,887 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:22:06,888 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 20:22:06,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 08:22:06 BoogieIcfgContainer [2022-12-13 20:22:06,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 20:22:06,901 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 20:22:06,901 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 20:22:06,901 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 20:22:06,901 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:15:51" (3/4) ... [2022-12-13 20:22:06,903 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 20:22:06,908 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-12-13 20:22:06,908 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-12-13 20:22:06,910 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-12-13 20:22:06,910 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-13 20:22:06,910 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 20:22:06,911 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 20:22:06,931 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 20:22:06,931 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 20:22:06,932 INFO L158 Benchmark]: Toolchain (without parser) took 376263.16ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 77.3MB in the beginning and 59.5MB in the end (delta: 17.7MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. [2022-12-13 20:22:06,932 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 111.1MB. Free memory was 85.6MB in the beginning and 85.5MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:22:06,932 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.22ms. Allocated memory is still 111.1MB. Free memory was 77.0MB in the beginning and 66.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 20:22:06,932 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.66ms. Allocated memory is still 111.1MB. Free memory was 66.5MB in the beginning and 64.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:22:06,932 INFO L158 Benchmark]: Boogie Preprocessor took 17.59ms. Allocated memory is still 111.1MB. Free memory was 64.9MB in the beginning and 63.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:22:06,933 INFO L158 Benchmark]: RCFGBuilder took 210.31ms. Allocated memory is still 111.1MB. Free memory was 63.7MB in the beginning and 52.8MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 20:22:06,933 INFO L158 Benchmark]: TraceAbstraction took 375791.55ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 52.2MB in the beginning and 61.6MB in the end (delta: -9.5MB). Peak memory consumption was 52.0MB. Max. memory is 16.1GB. [2022-12-13 20:22:06,933 INFO L158 Benchmark]: Witness Printer took 30.65ms. Allocated memory is still 134.2MB. Free memory was 61.6MB in the beginning and 59.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 20:22:06,935 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 111.1MB. Free memory was 85.6MB in the beginning and 85.5MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 184.22ms. Allocated memory is still 111.1MB. Free memory was 77.0MB in the beginning and 66.5MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.66ms. Allocated memory is still 111.1MB. Free memory was 66.5MB in the beginning and 64.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.59ms. Allocated memory is still 111.1MB. Free memory was 64.9MB in the beginning and 63.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 210.31ms. Allocated memory is still 111.1MB. Free memory was 63.7MB in the beginning and 52.8MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 375791.55ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 52.2MB in the beginning and 61.6MB in the end (delta: -9.5MB). Peak memory consumption was 52.0MB. Max. memory is 16.1GB. * Witness Printer took 30.65ms. Allocated memory is still 134.2MB. Free memory was 61.6MB in the beginning and 59.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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 3 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 375.7s, OverallIterations: 12, TraceHistogramMax: 16, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 74.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 13.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 380 SdHoareTripleChecker+Valid, 23.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 350 mSDsluCounter, 1744 SdHoareTripleChecker+Invalid, 23.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1311 mSDsCounter, 446 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3263 IncrementalHoareTripleChecker+Invalid, 3711 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 446 mSolverCounterUnsat, 433 mSDtfsCounter, 3263 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1402 GetRequests, 1198 SyntacticMatches, 3 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 928 ImplicationChecksByTransitivity, 128.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=7, InterpolantAutomatonStates: 128, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 58 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 85 PreInvPairs, 123 NumberOfFragments, 1462 HoareAnnotationTreeSize, 85 FomulaSimplifications, 226 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 15 FomulaSimplificationsInter, 8043 FormulaSimplificationTreeSizeReductionInter, 12.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 285.6s InterpolantComputationTime, 777 NumberOfCodeBlocks, 750 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1388 ConstructedInterpolants, 0 QuantifiedInterpolants, 20594 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1541 ConjunctsInSsa, 245 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 3650/4059 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: 46]: Loop Invariant Derived loop invariant: (((((((((p == 1 && d == B % 4294967296) && q == 0) && B % 4294967296 <= 2) && r == A % 4294967296) && r + 1 <= B % 4294967296) || ((((((p == 1 && A % 4294967296 <= 2) && 0 <= r) && 2 == q) && q * (B % 4294967296) + r == A % 4294967296) && d == (-r + A % 4294967296) / 2) && 1 <= 2 * (B % 4294967296))) || ((((((2 == p && 2 * (B % 4294967296) == d) && p == q) && (-1 + -r + -d) / 4294967296 * 4294967296 + 4294967294 + d + r <= 0) && d + r == A % 4294967296) && 2 * (B % 4294967296) <= d + r) && 1 <= 2 * (B % 4294967296))) || (((((((!(d <= r) && d / 2 + A % 4294967296 == p / 2 * (B % 4294967296) + q * (B % 4294967296) + r) && 2 == p) && p * (B % 4294967296) == d) && B % 4294967296 <= 2) && r == A % 4294967296) && d % 2 == 0) && d / 2 <= r)) || (((((((!(d <= r) && d / 2 + A % 4294967296 == p / 2 * (B % 4294967296) + q * (B % 4294967296) + r) && A % 4294967296 <= 2) && p * (B % 4294967296) == d) && B % 4294967296 <= 2) && r == A % 4294967296) && d % 2 == 0) && d / 2 <= r)) || ((((((p == 1 && A % 4294967296 < 2 * d) && p == q) && d <= A % 4294967296) && B % 4294967296 <= 2) && q * (B % 4294967296) + r == A % 4294967296) && d + r == A % 4294967296) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((d / 2 + A % 4294967296 == p / 2 * (B % 4294967296) + q * (B % 4294967296) + r && 1 <= B % 4294967296) && A % 4294967296 <= 2) && 2 <= p) && p * (B % 4294967296) == d) && r == A % 4294967296) && d % 2 == 0) && d / 2 <= r) || ((((((p == 1 && d == B % 4294967296) && 1 <= d % 4294967296) && A % 4294967296 <= 2) && q == 0) && B % 4294967296 <= 2) && r == A % 4294967296) RESULT: Ultimate proved your program to be correct! [2022-12-13 20:22:07,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc766c-6283-471f-a488-fc5084a882c7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE