./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/egcd-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/egcd-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --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 5cf588c7d7521936f2238a5a4b8ed55e91050a69daa6016b5b2b4a486ef1b9f8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:09:55,765 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:09:55,841 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 04:09:55,845 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:09:55,846 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:09:55,873 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:09:55,874 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:09:55,874 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:09:55,875 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:09:55,876 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:09:55,876 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:09:55,877 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:09:55,878 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:09:55,879 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:09:55,879 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:09:55,880 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:09:55,881 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:09:55,881 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:09:55,882 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:09:55,882 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:09:55,883 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:09:55,884 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:09:55,885 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:09:55,885 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:09:55,886 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:09:55,886 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:09:55,887 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:09:55,887 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:09:55,888 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:09:55,888 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:09:55,889 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:09:55,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:09:55,890 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:09:55,890 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:09:55,890 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:09:55,890 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:09:55,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:09:55,891 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:09:55,891 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:09:55,891 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:09:55,891 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:09:55,892 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:09:55,892 INFO L153 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_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5cf588c7d7521936f2238a5a4b8ed55e91050a69daa6016b5b2b4a486ef1b9f8 [2023-11-29 04:09:56,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:09:56,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:09:56,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:09:56,159 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:09:56,160 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:09:56,161 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/nla-digbench/egcd-ll.c [2023-11-29 04:09:59,272 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:09:59,485 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:09:59,486 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/sv-benchmarks/c/nla-digbench/egcd-ll.c [2023-11-29 04:09:59,494 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/data/2f1e7689b/01bb16b5fb264d50972de4fc6500a40c/FLAG531d49ede [2023-11-29 04:09:59,509 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/data/2f1e7689b/01bb16b5fb264d50972de4fc6500a40c [2023-11-29 04:09:59,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:09:59,515 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:09:59,519 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:09:59,519 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:09:59,527 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:09:59,528 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:09:59" (1/1) ... [2023-11-29 04:09:59,529 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d0a4864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:59, skipping insertion in model container [2023-11-29 04:09:59,529 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:09:59" (1/1) ... [2023-11-29 04:09:59,557 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:09:59,745 WARN L240 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_082eb40c-d452-4bc6-aca1-402c132d43c6/sv-benchmarks/c/nla-digbench/egcd-ll.c[489,502] [2023-11-29 04:09:59,766 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:09:59,779 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:09:59,793 WARN L240 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_082eb40c-d452-4bc6-aca1-402c132d43c6/sv-benchmarks/c/nla-digbench/egcd-ll.c[489,502] [2023-11-29 04:09:59,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:09:59,820 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:09:59,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:59 WrapperNode [2023-11-29 04:09:59,821 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:09:59,822 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:09:59,822 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:09:59,822 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:09:59,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:59" (1/1) ... [2023-11-29 04:09:59,839 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:59" (1/1) ... [2023-11-29 04:09:59,862 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2023-11-29 04:09:59,863 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:09:59,864 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:09:59,864 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:09:59,864 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:09:59,878 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:59" (1/1) ... [2023-11-29 04:09:59,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:59" (1/1) ... [2023-11-29 04:09:59,880 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:59" (1/1) ... [2023-11-29 04:09:59,895 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 04:09:59,895 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:59" (1/1) ... [2023-11-29 04:09:59,896 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:59" (1/1) ... [2023-11-29 04:09:59,899 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:59" (1/1) ... [2023-11-29 04:09:59,903 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:59" (1/1) ... [2023-11-29 04:09:59,905 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:59" (1/1) ... [2023-11-29 04:09:59,906 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:59" (1/1) ... [2023-11-29 04:09:59,908 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:09:59,910 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:09:59,910 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:09:59,910 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:09:59,911 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:59" (1/1) ... [2023-11-29 04:09:59,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:09:59,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:09:59,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:09:59,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:09:59,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:09:59,987 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 04:09:59,988 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 04:09:59,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:09:59,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:09:59,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:09:59,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 04:09:59,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 04:10:00,079 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:10:00,082 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:10:00,250 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:10:00,278 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:10:00,279 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 04:10:00,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:10:00 BoogieIcfgContainer [2023-11-29 04:10:00,280 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:10:00,283 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:10:00,284 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:10:00,288 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:10:00,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:09:59" (1/3) ... [2023-11-29 04:10:00,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74eeb867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:10:00, skipping insertion in model container [2023-11-29 04:10:00,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:09:59" (2/3) ... [2023-11-29 04:10:00,290 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74eeb867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:10:00, skipping insertion in model container [2023-11-29 04:10:00,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:10:00" (3/3) ... [2023-11-29 04:10:00,292 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll.c [2023-11-29 04:10:00,316 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:10:00,317 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 04:10:00,371 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:10:00,380 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=LoopHeads, 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;@5b6556f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:10:00,380 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 04:10:00,385 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 04:10:00,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 04:10:00,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:00,396 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:00,397 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:00,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:00,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1611530917, now seen corresponding path program 1 times [2023-11-29 04:10:00,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:00,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096165474] [2023-11-29 04:10:00,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:00,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:00,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 04:10:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:00,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 04:10:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:00,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 04:10:00,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:00,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096165474] [2023-11-29 04:10:00,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096165474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:00,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:00,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:10:00,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165571581] [2023-11-29 04:10:00,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:00,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 04:10:00,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:00,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 04:10:00,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:10:00,690 INFO L87 Difference]: Start difference. First operand has 26 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:10:00,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:00,727 INFO L93 Difference]: Finished difference Result 50 states and 82 transitions. [2023-11-29 04:10:00,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 04:10:00,730 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2023-11-29 04:10:00,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:00,739 INFO L225 Difference]: With dead ends: 50 [2023-11-29 04:10:00,739 INFO L226 Difference]: Without dead ends: 24 [2023-11-29 04:10:00,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:10:00,748 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:00,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:10:00,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-29 04:10:00,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-29 04:10:00,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 04:10:00,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2023-11-29 04:10:00,798 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 17 [2023-11-29 04:10:00,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:00,799 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2023-11-29 04:10:00,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:10:00,800 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2023-11-29 04:10:00,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 04:10:00,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:00,802 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:00,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:10:00,802 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:00,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:00,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1282140333, now seen corresponding path program 1 times [2023-11-29 04:10:00,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:00,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334753948] [2023-11-29 04:10:00,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:00,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:00,829 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:10:00,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2127266536] [2023-11-29 04:10:00,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:00,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:00,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:10:00,839 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:10:00,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:10:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:00,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 04:10:00,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:10:01,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:10:01,074 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:10:01,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:01,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334753948] [2023-11-29 04:10:01,075 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:10:01,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127266536] [2023-11-29 04:10:01,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127266536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:01,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:01,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:10:01,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986705158] [2023-11-29 04:10:01,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:01,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:10:01,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:01,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:10:01,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:10:01,081 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:10:01,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:01,206 INFO L93 Difference]: Finished difference Result 40 states and 55 transitions. [2023-11-29 04:10:01,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:10:01,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-11-29 04:10:01,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:01,208 INFO L225 Difference]: With dead ends: 40 [2023-11-29 04:10:01,209 INFO L226 Difference]: Without dead ends: 38 [2023-11-29 04:10:01,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:10:01,211 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 9 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:01,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 118 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:10:01,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-29 04:10:01,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2023-11-29 04:10:01,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 20 states have internal predecessors, (23), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-29 04:10:01,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 52 transitions. [2023-11-29 04:10:01,227 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 52 transitions. Word has length 17 [2023-11-29 04:10:01,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:01,228 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 52 transitions. [2023-11-29 04:10:01,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:10:01,228 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2023-11-29 04:10:01,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 04:10:01,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:01,229 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:01,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:10:01,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-29 04:10:01,431 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:01,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:01,432 INFO L85 PathProgramCache]: Analyzing trace with hash -559479356, now seen corresponding path program 1 times [2023-11-29 04:10:01,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:01,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026271101] [2023-11-29 04:10:01,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:01,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:01,452 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:10:01,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1327894463] [2023-11-29 04:10:01,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:01,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:01,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:10:01,455 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:10:01,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:10:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:01,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 04:10:01,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:10:01,729 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:10:01,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:10:01,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:01,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026271101] [2023-11-29 04:10:01,880 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:10:01,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327894463] [2023-11-29 04:10:01,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327894463] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:10:01,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:10:01,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-29 04:10:01,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440483172] [2023-11-29 04:10:01,882 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:10:01,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 04:10:01,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:01,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 04:10:01,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:10:01,884 INFO L87 Difference]: Start difference. First operand 37 states and 52 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 04:10:02,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:02,122 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2023-11-29 04:10:02,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:10:02,123 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2023-11-29 04:10:02,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:02,124 INFO L225 Difference]: With dead ends: 44 [2023-11-29 04:10:02,124 INFO L226 Difference]: Without dead ends: 42 [2023-11-29 04:10:02,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:10:02,127 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 27 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:02,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 97 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:10:02,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-29 04:10:02,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2023-11-29 04:10:02,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 23 states have internal predecessors, (26), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-29 04:10:02,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 55 transitions. [2023-11-29 04:10:02,143 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 55 transitions. Word has length 22 [2023-11-29 04:10:02,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:02,143 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 55 transitions. [2023-11-29 04:10:02,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 04:10:02,144 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 55 transitions. [2023-11-29 04:10:02,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 04:10:02,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:02,145 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:02,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 04:10:02,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:02,353 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:02,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:02,353 INFO L85 PathProgramCache]: Analyzing trace with hash 489854669, now seen corresponding path program 1 times [2023-11-29 04:10:02,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:02,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005761329] [2023-11-29 04:10:02,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:02,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:02,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:10:02,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [316111196] [2023-11-29 04:10:02,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:02,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:02,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:10:02,371 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:10:02,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:10:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:02,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 04:10:02,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:10:02,657 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:10:02,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:10:02,782 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 04:10:02,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:02,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005761329] [2023-11-29 04:10:02,782 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:10:02,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316111196] [2023-11-29 04:10:02,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316111196] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:10:02,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:10:02,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 14 [2023-11-29 04:10:02,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789478408] [2023-11-29 04:10:02,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:02,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:10:02,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:02,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:10:02,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:10:02,785 INFO L87 Difference]: Start difference. First operand 41 states and 55 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-11-29 04:10:02,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:02,875 INFO L93 Difference]: Finished difference Result 66 states and 95 transitions. [2023-11-29 04:10:02,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:10:02,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 27 [2023-11-29 04:10:02,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:02,879 INFO L225 Difference]: With dead ends: 66 [2023-11-29 04:10:02,880 INFO L226 Difference]: Without dead ends: 62 [2023-11-29 04:10:02,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:10:02,882 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:02,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 94 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:10:02,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-29 04:10:02,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-11-29 04:10:02,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 30 states have (on average 1.3) internal successors, (39), 34 states have internal predecessors, (39), 26 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-29 04:10:02,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 88 transitions. [2023-11-29 04:10:02,908 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 88 transitions. Word has length 27 [2023-11-29 04:10:02,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:02,909 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 88 transitions. [2023-11-29 04:10:02,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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) [2023-11-29 04:10:02,909 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 88 transitions. [2023-11-29 04:10:02,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 04:10:02,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:02,911 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:02,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 04:10:03,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:03,113 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:03,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:03,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1209005526, now seen corresponding path program 1 times [2023-11-29 04:10:03,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:03,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806290120] [2023-11-29 04:10:03,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:03,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:03,128 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:10:03,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1419470756] [2023-11-29 04:10:03,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:03,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:03,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:10:03,130 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:10:03,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:10:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:03,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:10:03,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:10:03,224 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 04:10:03,225 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:10:03,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:03,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806290120] [2023-11-29 04:10:03,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:10:03,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419470756] [2023-11-29 04:10:03,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419470756] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:10:03,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:10:03,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:10:03,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871431236] [2023-11-29 04:10:03,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:03,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:10:03,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:03,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:10:03,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:10:03,228 INFO L87 Difference]: Start difference. First operand 62 states and 88 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 04:10:03,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:03,307 INFO L93 Difference]: Finished difference Result 68 states and 93 transitions. [2023-11-29 04:10:03,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:10:03,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2023-11-29 04:10:03,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:03,309 INFO L225 Difference]: With dead ends: 68 [2023-11-29 04:10:03,309 INFO L226 Difference]: Without dead ends: 66 [2023-11-29 04:10:03,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:10:03,311 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:03,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 104 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:10:03,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-29 04:10:03,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-11-29 04:10:03,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 37 states have internal predecessors, (42), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-29 04:10:03,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 91 transitions. [2023-11-29 04:10:03,344 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 91 transitions. Word has length 33 [2023-11-29 04:10:03,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:03,345 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 91 transitions. [2023-11-29 04:10:03,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-29 04:10:03,345 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 91 transitions. [2023-11-29 04:10:03,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-29 04:10:03,346 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:03,347 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:03,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 04:10:03,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:03,548 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:03,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:03,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1728861241, now seen corresponding path program 1 times [2023-11-29 04:10:03,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:03,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106020363] [2023-11-29 04:10:03,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:03,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:03,564 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:10:03,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198419747] [2023-11-29 04:10:03,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:03,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:03,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:10:03,565 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:10:03,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:10:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:03,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 04:10:03,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:10:03,746 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 04:10:03,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:10:03,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:03,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106020363] [2023-11-29 04:10:03,884 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:10:03,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198419747] [2023-11-29 04:10:03,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198419747] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:10:03,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:10:03,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-29 04:10:03,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749824638] [2023-11-29 04:10:03,885 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 04:10:03,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:10:03,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:03,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:10:03,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:10:03,887 INFO L87 Difference]: Start difference. First operand 66 states and 91 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 04:10:04,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:04,012 INFO L93 Difference]: Finished difference Result 76 states and 99 transitions. [2023-11-29 04:10:04,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:10:04,013 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 35 [2023-11-29 04:10:04,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:04,015 INFO L225 Difference]: With dead ends: 76 [2023-11-29 04:10:04,015 INFO L226 Difference]: Without dead ends: 73 [2023-11-29 04:10:04,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:10:04,017 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 13 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:04,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 83 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:10:04,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-29 04:10:04,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2023-11-29 04:10:04,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 42 states have internal predecessors, (48), 23 states have call successors, (23), 8 states have call predecessors, (23), 8 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-29 04:10:04,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 92 transitions. [2023-11-29 04:10:04,037 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 92 transitions. Word has length 35 [2023-11-29 04:10:04,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:04,038 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 92 transitions. [2023-11-29 04:10:04,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 04:10:04,039 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 92 transitions. [2023-11-29 04:10:04,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-29 04:10:04,040 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:04,040 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:04,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 04:10:04,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:04,241 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:04,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:04,242 INFO L85 PathProgramCache]: Analyzing trace with hash 724865447, now seen corresponding path program 1 times [2023-11-29 04:10:04,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:04,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075222396] [2023-11-29 04:10:04,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:04,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:04,254 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:10:04,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1883959384] [2023-11-29 04:10:04,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:04,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:04,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:10:04,257 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:10:04,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:10:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:04,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 04:10:04,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:10:04,407 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 04:10:04,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:10:04,550 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 04:10:04,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:04,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075222396] [2023-11-29 04:10:04,551 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:10:04,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883959384] [2023-11-29 04:10:04,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883959384] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:10:04,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:10:04,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2023-11-29 04:10:04,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348215167] [2023-11-29 04:10:04,553 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:10:04,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 04:10:04,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:04,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:10:04,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:10:04,555 INFO L87 Difference]: Start difference. First operand 71 states and 92 transitions. Second operand has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-29 04:10:04,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:04,743 INFO L93 Difference]: Finished difference Result 80 states and 102 transitions. [2023-11-29 04:10:04,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:10:04,744 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 38 [2023-11-29 04:10:04,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:04,746 INFO L225 Difference]: With dead ends: 80 [2023-11-29 04:10:04,746 INFO L226 Difference]: Without dead ends: 76 [2023-11-29 04:10:04,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:10:04,748 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:04,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 142 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:10:04,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-29 04:10:04,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-11-29 04:10:04,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 46 states have internal predecessors, (50), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-29 04:10:04,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2023-11-29 04:10:04,775 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 95 transitions. Word has length 38 [2023-11-29 04:10:04,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:04,775 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 95 transitions. [2023-11-29 04:10:04,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-29 04:10:04,776 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 95 transitions. [2023-11-29 04:10:04,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 04:10:04,778 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:04,778 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:04,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 04:10:04,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:04,984 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:04,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:04,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1004479210, now seen corresponding path program 2 times [2023-11-29 04:10:04,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:04,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866555103] [2023-11-29 04:10:04,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:04,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:04,999 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:10:04,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [864375151] [2023-11-29 04:10:04,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:10:04,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:05,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:10:05,001 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:10:05,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 04:10:05,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:10:05,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:10:05,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 04:10:05,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:10:05,313 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 04:10:05,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:10:05,532 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 04:10:05,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:05,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866555103] [2023-11-29 04:10:05,533 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:10:05,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864375151] [2023-11-29 04:10:05,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864375151] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:10:05,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:10:05,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-11-29 04:10:05,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554110582] [2023-11-29 04:10:05,534 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:10:05,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:10:05,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:05,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:10:05,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:10:05,536 INFO L87 Difference]: Start difference. First operand 76 states and 95 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-29 04:10:06,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:06,177 INFO L93 Difference]: Finished difference Result 102 states and 131 transitions. [2023-11-29 04:10:06,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:10:06,178 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 40 [2023-11-29 04:10:06,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:06,180 INFO L225 Difference]: With dead ends: 102 [2023-11-29 04:10:06,180 INFO L226 Difference]: Without dead ends: 95 [2023-11-29 04:10:06,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:10:06,182 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 29 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:06,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 104 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:10:06,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-29 04:10:06,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 80. [2023-11-29 04:10:06,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 51 states have internal predecessors, (55), 19 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-29 04:10:06,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2023-11-29 04:10:06,208 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 40 [2023-11-29 04:10:06,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:06,208 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2023-11-29 04:10:06,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 5 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-29 04:10:06,209 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2023-11-29 04:10:06,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-29 04:10:06,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:06,211 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:06,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 04:10:06,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:06,414 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:06,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:06,415 INFO L85 PathProgramCache]: Analyzing trace with hash 552095135, now seen corresponding path program 1 times [2023-11-29 04:10:06,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:06,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539210931] [2023-11-29 04:10:06,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:06,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:06,423 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:10:06,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [208699562] [2023-11-29 04:10:06,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:06,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:06,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:10:06,425 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:10:06,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 04:10:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:06,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 04:10:06,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:10:06,798 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-29 04:10:06,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:10:07,084 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-29 04:10:07,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:07,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539210931] [2023-11-29 04:10:07,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:10:07,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208699562] [2023-11-29 04:10:07,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208699562] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:10:07,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:10:07,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2023-11-29 04:10:07,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101162962] [2023-11-29 04:10:07,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:10:07,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 04:10:07,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:07,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 04:10:07,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:10:07,088 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 14 states have internal predecessors, (31), 8 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-11-29 04:10:07,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:07,492 INFO L93 Difference]: Finished difference Result 95 states and 118 transitions. [2023-11-29 04:10:07,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:10:07,493 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 14 states have internal predecessors, (31), 8 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 53 [2023-11-29 04:10:07,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:07,494 INFO L225 Difference]: With dead ends: 95 [2023-11-29 04:10:07,494 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 04:10:07,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2023-11-29 04:10:07,496 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:07,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 215 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:10:07,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 04:10:07,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 04:10:07,498 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) [2023-11-29 04:10:07,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 04:10:07,498 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2023-11-29 04:10:07,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:07,498 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 04:10:07,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 14 states have internal predecessors, (31), 8 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-11-29 04:10:07,498 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 04:10:07,499 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 04:10:07,501 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 04:10:07,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 04:10:07,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:07,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 04:10:57,353 WARN L293 SmtUtils]: Spent 48.91s on a formula simplification. DAG size of input: 64 DAG size of output: 41 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-11-29 04:11:06,129 WARN L293 SmtUtils]: Spent 8.77s on a formula simplification. DAG size of input: 64 DAG size of output: 41 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-11-29 04:11:57,390 WARN L293 SmtUtils]: Spent 51.26s on a formula simplification. DAG size of input: 64 DAG size of output: 40 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-11-29 04:11:58,727 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-29 04:11:58,727 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 50) the Hoare annotation is: (let ((.cse7 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse8 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse5 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse3 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse4 (<= |ULTIMATE.start_main_~y~0#1| 2147483647)) (.cse6 (= (+ .cse7 .cse8) |ULTIMATE.start_main_~a~0#1|))) (or (and .cse0 .cse1 (= (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1| .cse2) (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (= |ULTIMATE.start_main_~r~0#1| 0) .cse3 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse4 .cse5) (and .cse0 .cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse3 .cse4 .cse6 .cse5) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) .cse1 (= (+ .cse7 |ULTIMATE.start_main_~b~0#1| .cse8) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) .cse2)) (<= 1 |ULTIMATE.start_main_~x~0#1|) .cse3 .cse4 .cse6)))) [2023-11-29 04:11:58,727 INFO L895 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: (<= |ULTIMATE.start_main_~y~0#1| 2147483647) [2023-11-29 04:11:58,728 INFO L895 garLoopResultBuilder]: At program point L23-1(line 23) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647)) [2023-11-29 04:11:58,728 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647)) [2023-11-29 04:11:58,728 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (let ((.cse7 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse8 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse5 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse3 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse4 (<= |ULTIMATE.start_main_~y~0#1| 2147483647)) (.cse6 (= (+ .cse7 .cse8) |ULTIMATE.start_main_~a~0#1|))) (or (and .cse0 .cse1 (= (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1| .cse2) (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (= |ULTIMATE.start_main_~r~0#1| 0) .cse3 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse4 .cse5) (and .cse0 .cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse3 .cse4 .cse6 .cse5) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) .cse1 (= (+ .cse7 |ULTIMATE.start_main_~b~0#1| .cse8) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) .cse2)) (<= 1 |ULTIMATE.start_main_~x~0#1|) .cse3 .cse4 .cse6)))) [2023-11-29 04:11:58,728 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 04:11:58,728 INFO L899 garLoopResultBuilder]: For program point L36(lines 33 50) no Hoare annotation was computed. [2023-11-29 04:11:58,728 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2023-11-29 04:11:58,729 INFO L895 garLoopResultBuilder]: At program point L34-1(line 34) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2023-11-29 04:11:58,729 INFO L899 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2023-11-29 04:11:58,729 INFO L899 garLoopResultBuilder]: For program point L55(line 55) no Hoare annotation was computed. [2023-11-29 04:11:58,729 INFO L895 garLoopResultBuilder]: At program point L53(line 53) the Hoare annotation is: (let ((.cse3 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse7 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse2 (<= |ULTIMATE.start_main_~y~0#1| 2147483647)) (.cse4 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse2 (= (+ |ULTIMATE.start_main_~y~0#1| .cse3) |ULTIMATE.start_main_~b~0#1|) .cse4) (let ((.cse5 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse6 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) .cse1 (= (+ .cse5 |ULTIMATE.start_main_~b~0#1| .cse6) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) .cse3)) (<= 1 |ULTIMATE.start_main_~x~0#1|) .cse7 .cse2 (= (+ .cse5 .cse6) |ULTIMATE.start_main_~a~0#1|))) (and .cse0 .cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse7 .cse2 .cse4))) [2023-11-29 04:11:58,729 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 49) no Hoare annotation was computed. [2023-11-29 04:11:58,729 INFO L895 garLoopResultBuilder]: At program point L41-2(lines 33 50) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2023-11-29 04:11:58,729 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2023-11-29 04:11:58,729 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 9) the Hoare annotation is: true [2023-11-29 04:11:58,730 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2023-11-29 04:11:58,730 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2023-11-29 04:11:58,730 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2023-11-29 04:11:58,730 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2023-11-29 04:11:58,730 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2023-11-29 04:11:58,730 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2023-11-29 04:11:58,730 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 16) the Hoare annotation is: true [2023-11-29 04:11:58,730 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2023-11-29 04:11:58,730 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2023-11-29 04:11:58,734 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:11:58,737 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 04:11:58,750 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 04:11:58 BoogieIcfgContainer [2023-11-29 04:11:58,750 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 04:11:58,751 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 04:11:58,751 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 04:11:58,751 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 04:11:58,752 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:10:00" (3/4) ... [2023-11-29 04:11:58,754 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 04:11:58,759 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-29 04:11:58,759 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-29 04:11:58,764 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-29 04:11:58,764 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-29 04:11:58,765 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 04:11:58,765 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 04:11:58,849 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 04:11:58,849 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 04:11:58,850 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 04:11:58,850 INFO L158 Benchmark]: Toolchain (without parser) took 119335.95ms. Allocated memory was 157.3MB in the beginning and 203.4MB in the end (delta: 46.1MB). Free memory was 105.6MB in the beginning and 70.9MB in the end (delta: 34.8MB). Peak memory consumption was 81.3MB. Max. memory is 16.1GB. [2023-11-29 04:11:58,851 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 113.2MB. Free memory is still 66.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:11:58,851 INFO L158 Benchmark]: CACSL2BoogieTranslator took 301.98ms. Allocated memory is still 157.3MB. Free memory was 105.6MB in the beginning and 94.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 04:11:58,852 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.24ms. Allocated memory is still 157.3MB. Free memory was 94.7MB in the beginning and 93.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:11:58,852 INFO L158 Benchmark]: Boogie Preprocessor took 44.67ms. Allocated memory is still 157.3MB. Free memory was 93.1MB in the beginning and 91.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:11:58,853 INFO L158 Benchmark]: RCFGBuilder took 370.29ms. Allocated memory is still 157.3MB. Free memory was 91.5MB in the beginning and 79.7MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 04:11:58,853 INFO L158 Benchmark]: TraceAbstraction took 118466.94ms. Allocated memory was 157.3MB in the beginning and 203.4MB in the end (delta: 46.1MB). Free memory was 78.9MB in the beginning and 76.1MB in the end (delta: 2.8MB). Peak memory consumption was 71.4MB. Max. memory is 16.1GB. [2023-11-29 04:11:58,854 INFO L158 Benchmark]: Witness Printer took 98.71ms. Allocated memory is still 203.4MB. Free memory was 76.1MB in the beginning and 70.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 04:11:58,855 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 113.2MB. Free memory is still 66.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 301.98ms. Allocated memory is still 157.3MB. Free memory was 105.6MB in the beginning and 94.7MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.24ms. Allocated memory is still 157.3MB. Free memory was 94.7MB in the beginning and 93.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.67ms. Allocated memory is still 157.3MB. Free memory was 93.1MB in the beginning and 91.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 370.29ms. Allocated memory is still 157.3MB. Free memory was 91.5MB in the beginning and 79.7MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 118466.94ms. Allocated memory was 157.3MB in the beginning and 203.4MB in the end (delta: 46.1MB). Free memory was 78.9MB in the beginning and 76.1MB in the end (delta: 2.8MB). Peak memory consumption was 71.4MB. Max. memory is 16.1GB. * Witness Printer took 98.71ms. Allocated memory is still 203.4MB. Free memory was 76.1MB in the beginning and 70.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 118.4s, OverallIterations: 9, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 111.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 167 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 137 mSDsluCounter, 989 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 766 mSDsCounter, 103 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 759 IncrementalHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 103 mSolverCounterUnsat, 223 mSDtfsCounter, 759 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 454 GetRequests, 356 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=8, InterpolantAutomatonStates: 68, 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, 9 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 56 PreInvPairs, 100 NumberOfFragments, 529 HoareAnnotationTreeSize, 56 FomulaSimplifications, 1182 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 12 FomulaSimplificationsInter, 1659 FormulaSimplificationTreeSizeReductionInter, 110.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 282 NumberOfCodeBlocks, 282 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 427 ConstructedInterpolants, 0 QuantifiedInterpolants, 1651 SizeOfPredicates, 37 NumberOfNonLiveVariables, 767 ConjunctsInSsa, 174 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 363/406 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (((((((p * s) == ((q * r) + 1)) && (1 <= y)) && ((((r * y) + b) + (p * x)) == ((a + (s * y)) + (q * x)))) && (1 <= x)) && (y <= 2147483647)) && (((r * y) + (p * x)) == a)) RESULT: Ultimate proved your program to be correct! [2023-11-29 04:11:58,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_082eb40c-d452-4bc6-aca1-402c132d43c6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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