./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme --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 1009b309b84d3a678e4f12db10e873a2b96e065352111c00074b04d416cca18d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:43:52,268 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:43:52,384 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 10:43:52,396 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:43:52,397 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:43:52,433 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:43:52,434 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:43:52,435 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:43:52,437 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:43:52,441 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:43:52,442 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:43:52,443 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:43:52,444 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:43:52,446 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:43:52,446 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:43:52,447 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:43:52,448 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:43:52,448 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:43:52,449 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:43:52,449 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:43:52,450 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:43:52,450 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:43:52,451 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:43:52,451 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:43:52,452 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:43:52,452 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:43:52,453 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:43:52,454 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:43:52,454 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:43:52,455 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:43:52,456 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:43:52,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:43:52,457 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:43:52,457 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:43:52,457 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:43:52,458 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:43:52,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:43:52,458 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:43:52,459 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:43:52,459 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:43:52,459 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:43:52,460 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:43:52,460 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_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1009b309b84d3a678e4f12db10e873a2b96e065352111c00074b04d416cca18d [2023-11-26 10:43:52,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:43:52,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:43:52,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:43:52,765 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:43:52,766 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:43:52,767 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c [2023-11-26 10:43:55,918 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:43:56,131 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:43:56,132 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c [2023-11-26 10:43:56,140 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/data/6d0495f08/e336c54e5d584320a200ffdd2b0e527f/FLAGe2ee133de [2023-11-26 10:43:56,156 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/data/6d0495f08/e336c54e5d584320a200ffdd2b0e527f [2023-11-26 10:43:56,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:43:56,161 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:43:56,163 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:56,163 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:43:56,169 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:43:56,170 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:56" (1/1) ... [2023-11-26 10:43:56,171 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@777a953c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:56, skipping insertion in model container [2023-11-26 10:43:56,172 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:56" (1/1) ... [2023-11-26 10:43:56,196 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:43:56,358 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_7617e807-6811-4986-9258-415527765c1b/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c[588,601] [2023-11-26 10:43:56,383 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:56,394 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:43:56,407 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_7617e807-6811-4986-9258-415527765c1b/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound1.c[588,601] [2023-11-26 10:43:56,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:56,435 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:43:56,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:56 WrapperNode [2023-11-26 10:43:56,436 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:56,438 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:56,438 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:43:56,438 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:43:56,447 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:56" (1/1) ... [2023-11-26 10:43:56,463 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:56" (1/1) ... [2023-11-26 10:43:56,485 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2023-11-26 10:43:56,486 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:56,487 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:43:56,487 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:43:56,487 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:43:56,498 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:56" (1/1) ... [2023-11-26 10:43:56,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:56" (1/1) ... [2023-11-26 10:43:56,500 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:56" (1/1) ... [2023-11-26 10:43:56,511 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]. [2023-11-26 10:43:56,511 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:56" (1/1) ... [2023-11-26 10:43:56,512 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:56" (1/1) ... [2023-11-26 10:43:56,516 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:56" (1/1) ... [2023-11-26 10:43:56,520 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:56" (1/1) ... [2023-11-26 10:43:56,521 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:56" (1/1) ... [2023-11-26 10:43:56,522 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:56" (1/1) ... [2023-11-26 10:43:56,524 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:43:56,525 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:43:56,526 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:43:56,526 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:43:56,527 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:56" (1/1) ... [2023-11-26 10:43:56,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:43:56,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:56,563 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:56,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:43:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:43:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:43:56,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:43:56,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:43:56,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 10:43:56,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 10:43:56,684 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:43:56,686 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:43:56,879 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:43:56,906 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:43:56,906 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:43:56,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:56 BoogieIcfgContainer [2023-11-26 10:43:56,907 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:43:56,910 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:43:56,910 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:43:56,917 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:43:56,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:43:56" (1/3) ... [2023-11-26 10:43:56,919 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7623aae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:56, skipping insertion in model container [2023-11-26 10:43:56,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:56" (2/3) ... [2023-11-26 10:43:56,919 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7623aae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:43:56, skipping insertion in model container [2023-11-26 10:43:56,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:56" (3/3) ... [2023-11-26 10:43:56,921 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound1.c [2023-11-26 10:43:56,945 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:43:56,946 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 10:43:57,002 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:43:57,010 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;@94d59a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:43:57,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 10:43:57,018 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-26 10:43:57,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-26 10:43:57,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:57,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:57,027 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:57,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:57,032 INFO L85 PathProgramCache]: Analyzing trace with hash -2080946738, now seen corresponding path program 1 times [2023-11-26 10:43:57,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:57,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223330720] [2023-11-26 10:43:57,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:57,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:57,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:57,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:57,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223330720] [2023-11-26 10:43:57,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223330720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:57,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:57,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:57,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493114147] [2023-11-26 10:43:57,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:57,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 10:43:57,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:57,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 10:43:57,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:43:57,247 INFO L87 Difference]: Start difference. First operand has 24 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:57,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:57,282 INFO L93 Difference]: Finished difference Result 46 states and 84 transitions. [2023-11-26 10:43:57,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:43:57,289 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-26 10:43:57,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:57,302 INFO L225 Difference]: With dead ends: 46 [2023-11-26 10:43:57,303 INFO L226 Difference]: Without dead ends: 22 [2023-11-26 10:43:57,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 10:43:57,314 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 [2023-11-26 10:43:57,315 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] [2023-11-26 10:43:57,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-26 10:43:57,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-11-26 10:43:57,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 10:43:57,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 32 transitions. [2023-11-26 10:43:57,354 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 32 transitions. Word has length 8 [2023-11-26 10:43:57,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:57,355 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 32 transitions. [2023-11-26 10:43:57,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:57,355 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 32 transitions. [2023-11-26 10:43:57,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-26 10:43:57,356 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:57,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:57,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:43:57,357 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:57,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:57,358 INFO L85 PathProgramCache]: Analyzing trace with hash -304390244, now seen corresponding path program 1 times [2023-11-26 10:43:57,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:57,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910248555] [2023-11-26 10:43:57,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:57,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:57,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:57,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:57,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910248555] [2023-11-26 10:43:57,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910248555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:57,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:57,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:43:57,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402861047] [2023-11-26 10:43:57,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:57,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:43:57,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:57,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:43:57,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:43:57,683 INFO L87 Difference]: Start difference. First operand 22 states and 32 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:57,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:57,801 INFO L93 Difference]: Finished difference Result 28 states and 37 transitions. [2023-11-26 10:43:57,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:43:57,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-26 10:43:57,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:57,803 INFO L225 Difference]: With dead ends: 28 [2023-11-26 10:43:57,804 INFO L226 Difference]: Without dead ends: 26 [2023-11-26 10:43:57,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:43:57,806 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:57,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 78 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:43:57,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-26 10:43:57,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-26 10:43:57,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-26 10:43:57,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2023-11-26 10:43:57,829 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 8 [2023-11-26 10:43:57,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:57,829 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2023-11-26 10:43:57,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:43:57,829 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2023-11-26 10:43:57,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-26 10:43:57,830 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:57,830 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:57,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:43:57,833 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:57,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:57,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1112146385, now seen corresponding path program 1 times [2023-11-26 10:43:57,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:57,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041612795] [2023-11-26 10:43:57,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:57,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:57,860 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:57,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651583573] [2023-11-26 10:43:57,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:57,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:57,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:57,874 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:57,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:43:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:57,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 10:43:57,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:58,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:58,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:58,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:58,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:58,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041612795] [2023-11-26 10:43:58,333 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:58,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651583573] [2023-11-26 10:43:58,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651583573] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:43:58,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:43:58,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-11-26 10:43:58,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116197130] [2023-11-26 10:43:58,337 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:58,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:43:58,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:58,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:43:58,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:43:58,343 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:43:58,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:58,827 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2023-11-26 10:43:58,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:43:58,830 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2023-11-26 10:43:58,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:58,832 INFO L225 Difference]: With dead ends: 51 [2023-11-26 10:43:58,832 INFO L226 Difference]: Without dead ends: 49 [2023-11-26 10:43:58,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:43:58,834 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:58,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 100 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 10:43:58,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-26 10:43:58,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2023-11-26 10:43:58,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 21 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:43:58,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 64 transitions. [2023-11-26 10:43:58,881 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 64 transitions. Word has length 13 [2023-11-26 10:43:58,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:58,881 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 64 transitions. [2023-11-26 10:43:58,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:43:58,882 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 64 transitions. [2023-11-26 10:43:58,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-26 10:43:58,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:58,883 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:58,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:59,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:59,090 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:43:59,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:59,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1589877564, now seen corresponding path program 1 times [2023-11-26 10:43:59,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:59,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826741979] [2023-11-26 10:43:59,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:59,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:59,104 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:43:59,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [566079767] [2023-11-26 10:43:59,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:59,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:59,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:59,114 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:59,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:43:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:59,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 10:43:59,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:59,279 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:43:59,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:59,448 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:43:59,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:59,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826741979] [2023-11-26 10:43:59,449 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:43:59,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566079767] [2023-11-26 10:43:59,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566079767] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:43:59,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:43:59,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-11-26 10:43:59,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938553900] [2023-11-26 10:43:59,457 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:59,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:43:59,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:59,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:43:59,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:43:59,459 INFO L87 Difference]: Start difference. First operand 46 states and 64 transitions. Second operand has 12 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 10:43:59,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:59,810 INFO L93 Difference]: Finished difference Result 53 states and 70 transitions. [2023-11-26 10:43:59,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:43:59,811 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 18 [2023-11-26 10:43:59,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:43:59,813 INFO L225 Difference]: With dead ends: 53 [2023-11-26 10:43:59,813 INFO L226 Difference]: Without dead ends: 51 [2023-11-26 10:43:59,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:43:59,815 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:43:59,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 70 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:43:59,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-26 10:43:59,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2023-11-26 10:43:59,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 25 states have internal predecessors, (26), 21 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:43:59,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 67 transitions. [2023-11-26 10:43:59,842 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 67 transitions. Word has length 18 [2023-11-26 10:43:59,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:43:59,842 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 67 transitions. [2023-11-26 10:43:59,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 10:43:59,843 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 67 transitions. [2023-11-26 10:43:59,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-26 10:43:59,843 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:43:59,844 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:59,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:00,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:00,050 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:00,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:00,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1560032783, now seen corresponding path program 1 times [2023-11-26 10:44:00,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:00,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085835599] [2023-11-26 10:44:00,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:00,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:00,074 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:00,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [378490783] [2023-11-26 10:44:00,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:00,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:00,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:00,086 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:00,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:44:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:00,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-26 10:44:00,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:00,263 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-26 10:44:00,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:01,100 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-26 10:44:01,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:01,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085835599] [2023-11-26 10:44:01,101 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:01,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378490783] [2023-11-26 10:44:01,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378490783] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:44:01,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:44:01,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-11-26 10:44:01,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012192689] [2023-11-26 10:44:01,102 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:01,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:44:01,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:01,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:44:01,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:44:01,104 INFO L87 Difference]: Start difference. First operand 50 states and 67 transitions. Second operand has 12 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-26 10:44:01,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:01,968 INFO L93 Difference]: Finished difference Result 66 states and 85 transitions. [2023-11-26 10:44:01,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 10:44:01,969 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 23 [2023-11-26 10:44:01,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:01,970 INFO L225 Difference]: With dead ends: 66 [2023-11-26 10:44:01,971 INFO L226 Difference]: Without dead ends: 57 [2023-11-26 10:44:01,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:44:01,972 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 16 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:01,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 95 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 10:44:01,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-26 10:44:02,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-11-26 10:44:02,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 32 states have internal predecessors, (32), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-26 10:44:02,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2023-11-26 10:44:02,013 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 23 [2023-11-26 10:44:02,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:02,019 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2023-11-26 10:44:02,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-26 10:44:02,021 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2023-11-26 10:44:02,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-26 10:44:02,024 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:02,024 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:02,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:02,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:02,231 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:02,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:02,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1335110159, now seen corresponding path program 1 times [2023-11-26 10:44:02,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:02,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575524404] [2023-11-26 10:44:02,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:02,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:02,267 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:02,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [501315213] [2023-11-26 10:44:02,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:02,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:02,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:02,279 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:02,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:44:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:02,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-26 10:44:02,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:02,505 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-26 10:44:02,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:02,668 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-26 10:44:02,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:02,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575524404] [2023-11-26 10:44:02,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:02,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501315213] [2023-11-26 10:44:02,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501315213] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:44:02,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:44:02,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-11-26 10:44:02,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271255451] [2023-11-26 10:44:02,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:02,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 10:44:02,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:02,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 10:44:02,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:44:02,672 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 11 states have internal predecessors, (23), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) [2023-11-26 10:44:07,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-26 10:44:07,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:07,173 INFO L93 Difference]: Finished difference Result 81 states and 98 transitions. [2023-11-26 10:44:07,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 10:44:07,174 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 11 states have internal predecessors, (23), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) Word has length 45 [2023-11-26 10:44:07,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:07,176 INFO L225 Difference]: With dead ends: 81 [2023-11-26 10:44:07,176 INFO L226 Difference]: Without dead ends: 79 [2023-11-26 10:44:07,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-11-26 10:44:07,177 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 23 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:07,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 130 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 162 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2023-11-26 10:44:07,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-26 10:44:07,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2023-11-26 10:44:07,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 44 states have internal predecessors, (44), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-26 10:44:07,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 95 transitions. [2023-11-26 10:44:07,210 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 95 transitions. Word has length 45 [2023-11-26 10:44:07,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:07,211 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 95 transitions. [2023-11-26 10:44:07,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 11 states have internal predecessors, (23), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) [2023-11-26 10:44:07,211 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 95 transitions. [2023-11-26 10:44:07,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-26 10:44:07,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:07,216 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:07,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:07,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:07,423 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:07,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:07,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1958076911, now seen corresponding path program 2 times [2023-11-26 10:44:07,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:07,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732237956] [2023-11-26 10:44:07,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:07,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:07,443 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:07,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179898014] [2023-11-26 10:44:07,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:44:07,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:07,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:07,451 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:07,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:44:07,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 10:44:07,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:44:07,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-26 10:44:07,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:07,709 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-26 10:44:07,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:08,166 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 19 proven. 25 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-26 10:44:08,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:08,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732237956] [2023-11-26 10:44:08,167 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:08,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179898014] [2023-11-26 10:44:08,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179898014] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:44:08,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:44:08,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-11-26 10:44:08,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161124322] [2023-11-26 10:44:08,168 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:08,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 10:44:08,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:08,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:44:08,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:44:08,170 INFO L87 Difference]: Start difference. First operand 78 states and 95 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-26 10:44:08,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:08,616 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2023-11-26 10:44:08,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:44:08,617 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 55 [2023-11-26 10:44:08,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:08,619 INFO L225 Difference]: With dead ends: 85 [2023-11-26 10:44:08,619 INFO L226 Difference]: Without dead ends: 80 [2023-11-26 10:44:08,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:44:08,621 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 19 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:08,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 96 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 10:44:08,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-26 10:44:08,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-11-26 10:44:08,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 47 states have internal predecessors, (47), 24 states have call successors, (24), 11 states have call predecessors, (24), 11 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-26 10:44:08,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 93 transitions. [2023-11-26 10:44:08,652 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 93 transitions. Word has length 55 [2023-11-26 10:44:08,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:08,653 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 93 transitions. [2023-11-26 10:44:08,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-26 10:44:08,654 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 93 transitions. [2023-11-26 10:44:08,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-26 10:44:08,655 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:08,655 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:08,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:08,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 10:44:08,862 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:08,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:08,862 INFO L85 PathProgramCache]: Analyzing trace with hash 811423347, now seen corresponding path program 1 times [2023-11-26 10:44:08,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:08,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818074689] [2023-11-26 10:44:08,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:08,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:08,874 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:08,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [155072754] [2023-11-26 10:44:08,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:08,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:08,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:08,876 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:08,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:44:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:08,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-26 10:44:08,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:09,309 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-26 10:44:09,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:09,565 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-26 10:44:09,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:09,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818074689] [2023-11-26 10:44:09,566 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:09,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155072754] [2023-11-26 10:44:09,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155072754] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:44:09,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:44:09,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2023-11-26 10:44:09,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799753101] [2023-11-26 10:44:09,567 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:09,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 10:44:09,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:09,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 10:44:09,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:44:09,569 INFO L87 Difference]: Start difference. First operand 80 states and 93 transitions. Second operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2023-11-26 10:44:10,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:10,040 INFO L93 Difference]: Finished difference Result 94 states and 113 transitions. [2023-11-26 10:44:10,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 10:44:10,041 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 66 [2023-11-26 10:44:10,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:10,043 INFO L225 Difference]: With dead ends: 94 [2023-11-26 10:44:10,043 INFO L226 Difference]: Without dead ends: 92 [2023-11-26 10:44:10,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2023-11-26 10:44:10,044 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 21 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:10,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 156 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:44:10,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-26 10:44:10,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2023-11-26 10:44:10,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 51 states have internal predecessors, (52), 29 states have call successors, (29), 12 states have call predecessors, (29), 12 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-26 10:44:10,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2023-11-26 10:44:10,114 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 66 [2023-11-26 10:44:10,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:10,115 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2023-11-26 10:44:10,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2023-11-26 10:44:10,115 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2023-11-26 10:44:10,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-26 10:44:10,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:10,118 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:10,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:10,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-26 10:44:10,333 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:10,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:10,333 INFO L85 PathProgramCache]: Analyzing trace with hash 462308408, now seen corresponding path program 1 times [2023-11-26 10:44:10,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:10,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944720365] [2023-11-26 10:44:10,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:10,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:10,354 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:10,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2061601370] [2023-11-26 10:44:10,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:10,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:10,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:10,356 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:10,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 10:44:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:44:10,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-26 10:44:10,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:10,745 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-26 10:44:10,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:10,996 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-26 10:44:10,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:10,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944720365] [2023-11-26 10:44:10,996 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:10,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061601370] [2023-11-26 10:44:10,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061601370] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:44:10,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:44:10,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2023-11-26 10:44:10,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425663262] [2023-11-26 10:44:10,998 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:10,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 10:44:10,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:11,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 10:44:11,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:44:11,001 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2023-11-26 10:44:11,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:11,631 INFO L93 Difference]: Finished difference Result 123 states and 145 transitions. [2023-11-26 10:44:11,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 10:44:11,631 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) Word has length 71 [2023-11-26 10:44:11,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:11,639 INFO L225 Difference]: With dead ends: 123 [2023-11-26 10:44:11,639 INFO L226 Difference]: Without dead ends: 114 [2023-11-26 10:44:11,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2023-11-26 10:44:11,643 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 21 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:11,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 202 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 10:44:11,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-26 10:44:11,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2023-11-26 10:44:11,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 62 states have (on average 1.064516129032258) internal successors, (66), 65 states have internal predecessors, (66), 34 states have call successors, (34), 16 states have call predecessors, (34), 16 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-26 10:44:11,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 133 transitions. [2023-11-26 10:44:11,734 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 133 transitions. Word has length 71 [2023-11-26 10:44:11,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:11,735 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 133 transitions. [2023-11-26 10:44:11,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2023-11-26 10:44:11,735 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 133 transitions. [2023-11-26 10:44:11,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-26 10:44:11,743 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:11,743 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-26 10:44:11,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-26 10:44:11,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:11,950 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:11,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:11,951 INFO L85 PathProgramCache]: Analyzing trace with hash 978023919, now seen corresponding path program 3 times [2023-11-26 10:44:11,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:11,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518044270] [2023-11-26 10:44:11,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:11,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:11,976 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:11,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1903277422] [2023-11-26 10:44:11,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 10:44:11,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:11,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:11,978 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:11,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 10:44:12,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-26 10:44:12,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:44:12,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-26 10:44:12,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:12,324 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-11-26 10:44:12,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:44:14,238 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-11-26 10:44:14,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:14,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518044270] [2023-11-26 10:44:14,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:14,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903277422] [2023-11-26 10:44:14,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903277422] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:44:14,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 10:44:14,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-11-26 10:44:14,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374441164] [2023-11-26 10:44:14,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 10:44:14,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-26 10:44:14,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:14,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-26 10:44:14,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-11-26 10:44:14,242 INFO L87 Difference]: Start difference. First operand 113 states and 133 transitions. Second operand has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2023-11-26 10:44:16,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:16,869 INFO L93 Difference]: Finished difference Result 133 states and 150 transitions. [2023-11-26 10:44:16,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 10:44:16,869 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) Word has length 77 [2023-11-26 10:44:16,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:16,871 INFO L225 Difference]: With dead ends: 133 [2023-11-26 10:44:16,871 INFO L226 Difference]: Without dead ends: 123 [2023-11-26 10:44:16,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2023-11-26 10:44:16,873 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 24 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:16,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 156 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-26 10:44:16,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-26 10:44:16,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2023-11-26 10:44:16,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 73 states have internal predecessors, (74), 32 states have call successors, (32), 19 states have call predecessors, (32), 19 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-26 10:44:16,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 137 transitions. [2023-11-26 10:44:16,922 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 137 transitions. Word has length 77 [2023-11-26 10:44:16,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:16,924 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 137 transitions. [2023-11-26 10:44:16,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2023-11-26 10:44:16,924 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 137 transitions. [2023-11-26 10:44:16,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-26 10:44:16,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:44:16,927 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:16,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:17,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 10:44:17,134 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 10:44:17,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:44:17,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1954081427, now seen corresponding path program 2 times [2023-11-26 10:44:17,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:44:17,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731839317] [2023-11-26 10:44:17,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:44:17,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:44:17,155 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 10:44:17,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1731377447] [2023-11-26 10:44:17,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:44:17,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:44:17,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:44:17,157 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:44:17,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 10:44:17,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 10:44:17,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:44:17,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 10:44:17,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:44:17,458 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 432 proven. 0 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2023-11-26 10:44:17,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:44:17,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:44:17,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731839317] [2023-11-26 10:44:17,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 10:44:17,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731377447] [2023-11-26 10:44:17,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731377447] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:44:17,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:44:17,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 10:44:17,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397046317] [2023-11-26 10:44:17,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:44:17,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:44:17,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:44:17,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:44:17,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:44:17,462 INFO L87 Difference]: Start difference. First operand 123 states and 137 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-26 10:44:17,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:44:17,546 INFO L93 Difference]: Finished difference Result 127 states and 140 transitions. [2023-11-26 10:44:17,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:44:17,547 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 120 [2023-11-26 10:44:17,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:44:17,548 INFO L225 Difference]: With dead ends: 127 [2023-11-26 10:44:17,548 INFO L226 Difference]: Without dead ends: 0 [2023-11-26 10:44:17,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:44:17,552 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 1 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:44:17,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 78 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:44:17,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-26 10:44:17,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-26 10:44:17,553 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) [2023-11-26 10:44:17,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-26 10:44:17,554 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 120 [2023-11-26 10:44:17,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:44:17,554 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 10:44:17,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-26 10:44:17,555 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-26 10:44:17,555 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-26 10:44:17,557 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-26 10:44:17,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 10:44:17,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 10:44:17,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-26 10:44:18,436 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-26 10:44:18,437 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 46) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~a~0#1| 1)) (.cse1 (<= 0 |ULTIMATE.start_main_~a~0#1|))) (or (and .cse0 (= 7 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~z~0#1| 12) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 1) .cse1) (and .cse0 (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) .cse1 (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|)) (and (= 2 |ULTIMATE.start_main_~n~0#1|) (= |ULTIMATE.start_main_~a~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 8) (= 19 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~z~0#1| 18)))) [2023-11-26 10:44:18,437 INFO L895 garLoopResultBuilder]: At program point L33-3(lines 33 46) the Hoare annotation is: (or (and (= 7 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~z~0#1| 12) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| 0) (= |ULTIMATE.start_main_~n~0#1| 1)) (and (= 2 |ULTIMATE.start_main_~n~0#1|) (= |ULTIMATE.start_main_~a~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 8) (= 19 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~z~0#1| 18)) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))) [2023-11-26 10:44:18,437 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (and (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|)) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) (* |ULTIMATE.start_main_~x~0#1| 18))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) [2023-11-26 10:44:18,438 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (or (and (= 2 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_main_~a~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 8) (<= 0 |ULTIMATE.start_main_~a~0#1|) (= 19 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~z~0#1| 18)) (and (= 7 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~z~0#1| 12) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 1)) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))) [2023-11-26 10:44:18,438 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (or (and (= 7 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~z~0#1| 12) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| 0) (= |ULTIMATE.start_main_~n~0#1| 1)) (and (= 2 |ULTIMATE.start_main_~n~0#1|) (= |ULTIMATE.start_main_~a~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 8) (= 19 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~z~0#1| 18)) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))) [2023-11-26 10:44:18,438 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2023-11-26 10:44:18,438 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-26 10:44:18,438 INFO L899 garLoopResultBuilder]: For program point L38(lines 33 46) no Hoare annotation was computed. [2023-11-26 10:44:18,439 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~a~0#1| 1)) (.cse1 (<= 0 |ULTIMATE.start_main_~a~0#1|))) (or (and .cse0 (= 7 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~z~0#1| 12) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 1) .cse1) (and .cse0 (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) .cse1 (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|)) (and (= 2 |ULTIMATE.start_main_~n~0#1|) (= |ULTIMATE.start_main_~a~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 8) (= 19 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~z~0#1| 18)))) [2023-11-26 10:44:18,439 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~a~0#1| 1)) (.cse1 (<= 0 |ULTIMATE.start_main_~a~0#1|))) (or (and .cse0 (= 7 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~z~0#1| 12) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 1) .cse1) (and .cse0 (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) .cse1 (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|)) (and (= 2 |ULTIMATE.start_main_~n~0#1|) (= |ULTIMATE.start_main_~a~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 8) (= 19 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~z~0#1| 18)))) [2023-11-26 10:44:18,439 INFO L895 garLoopResultBuilder]: At program point L34-1(line 34) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~a~0#1| 1)) (.cse1 (<= 0 |ULTIMATE.start_main_~a~0#1|))) (or (and .cse0 (= 7 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~z~0#1| 12) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 1) .cse1) (and .cse0 (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) .cse1 (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|)) (and (= 2 |ULTIMATE.start_main_~n~0#1|) (= |ULTIMATE.start_main_~a~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 8) (= 19 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~z~0#1| 18)))) [2023-11-26 10:44:18,440 INFO L899 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2023-11-26 10:44:18,440 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse0 (* 3 |ULTIMATE.start_main_~n~0#1|)) (.cse1 (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (and (= |ULTIMATE.start_main_~y~0#1| (+ .cse0 .cse1 1)) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (= (+ .cse0 .cse1 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) [2023-11-26 10:44:18,440 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (or (and (= 7 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~z~0#1| 12) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| 0) (= |ULTIMATE.start_main_~n~0#1| 1)) (and (= 2 |ULTIMATE.start_main_~n~0#1|) (= |ULTIMATE.start_main_~a~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 8) (= 19 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~z~0#1| 18)) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|))) [2023-11-26 10:44:18,440 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-11-26 10:44:18,441 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~a~0#1| 1)) (.cse1 (<= 0 |ULTIMATE.start_main_~a~0#1|))) (or (and .cse0 (= 7 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~z~0#1| 12) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 1) .cse1) (and .cse0 (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) .cse1 (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|)) (and (= 2 |ULTIMATE.start_main_~n~0#1|) (= |ULTIMATE.start_main_~a~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 8) (= 19 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~z~0#1| 18)))) [2023-11-26 10:44:18,441 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~a~0#1| 1)) (.cse1 (<= 0 |ULTIMATE.start_main_~a~0#1|))) (or (and .cse0 (= 7 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~z~0#1| 12) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 1) .cse1) (and .cse0 (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) .cse1 (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|)) (and (= 2 |ULTIMATE.start_main_~n~0#1|) (= |ULTIMATE.start_main_~a~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 8) (= 19 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~z~0#1| 18)))) [2023-11-26 10:44:18,441 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-11-26 10:44:18,441 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-11-26 10:44:18,441 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-11-26 10:44:18,442 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-11-26 10:44:18,442 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-11-26 10:44:18,442 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-11-26 10:44:18,445 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1] [2023-11-26 10:44:18,448 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 10:44:18,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 10:44:18 BoogieIcfgContainer [2023-11-26 10:44:18,461 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 10:44:18,461 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:44:18,461 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:44:18,462 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:44:18,462 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:56" (3/4) ... [2023-11-26 10:44:18,464 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 10:44:18,468 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-26 10:44:18,473 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-26 10:44:18,473 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-26 10:44:18,474 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-26 10:44:18,474 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-26 10:44:18,577 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 10:44:18,578 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 10:44:18,578 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:44:18,578 INFO L158 Benchmark]: Toolchain (without parser) took 22417.64ms. Allocated memory was 155.2MB in the beginning and 245.4MB in the end (delta: 90.2MB). Free memory was 113.9MB in the beginning and 160.5MB in the end (delta: -46.6MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2023-11-26 10:44:18,579 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 102.8MB. Free memory is still 53.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:44:18,579 INFO L158 Benchmark]: CACSL2BoogieTranslator took 274.28ms. Allocated memory is still 155.2MB. Free memory was 113.5MB in the beginning and 102.2MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 10:44:18,580 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.28ms. Allocated memory is still 155.2MB. Free memory was 102.2MB in the beginning and 100.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:44:18,580 INFO L158 Benchmark]: Boogie Preprocessor took 37.75ms. Allocated memory is still 155.2MB. Free memory was 100.5MB in the beginning and 98.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:44:18,581 INFO L158 Benchmark]: RCFGBuilder took 382.01ms. Allocated memory is still 155.2MB. Free memory was 98.8MB in the beginning and 86.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-26 10:44:18,582 INFO L158 Benchmark]: TraceAbstraction took 21550.56ms. Allocated memory was 155.2MB in the beginning and 245.4MB in the end (delta: 90.2MB). Free memory was 85.4MB in the beginning and 164.7MB in the end (delta: -79.3MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. [2023-11-26 10:44:18,582 INFO L158 Benchmark]: Witness Printer took 116.65ms. Allocated memory is still 245.4MB. Free memory was 164.7MB in the beginning and 160.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 10:44:18,584 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 102.8MB. Free memory is still 53.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 274.28ms. Allocated memory is still 155.2MB. Free memory was 113.5MB in the beginning and 102.2MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.28ms. Allocated memory is still 155.2MB. Free memory was 102.2MB in the beginning and 100.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.75ms. Allocated memory is still 155.2MB. Free memory was 100.5MB in the beginning and 98.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 382.01ms. Allocated memory is still 155.2MB. Free memory was 98.8MB in the beginning and 86.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 21550.56ms. Allocated memory was 155.2MB in the beginning and 245.4MB in the end (delta: 90.2MB). Free memory was 85.4MB in the beginning and 164.7MB in the end (delta: -79.3MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. * Witness Printer took 116.65ms. Allocated memory is still 245.4MB. Free memory was 164.7MB in the beginning and 160.5MB in the end (delta: 4.2MB). 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: 17]: 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 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 21.5s, OverallIterations: 11, TraceHistogramMax: 22, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 10.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 262 SdHoareTripleChecker+Valid, 8.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 167 mSDsluCounter, 1193 SdHoareTripleChecker+Invalid, 8.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 932 mSDsCounter, 278 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1348 IncrementalHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 278 mSolverCounterUnsat, 261 mSDtfsCounter, 1348 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 878 GetRequests, 748 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred in iteration=10, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 8 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 72 PreInvPairs, 107 NumberOfFragments, 589 HoareAnnotationTreeSize, 72 FomulaSimplifications, 2847 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 13 FomulaSimplificationsInter, 129 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 504 NumberOfCodeBlocks, 464 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 853 ConstructedInterpolants, 0 QuantifiedInterpolants, 4025 SizeOfPredicates, 28 NumberOfNonLiveVariables, 1146 ConjunctsInSsa, 194 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 3116/3318 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: ((((((((a <= 1) && (7 == y)) && (z == 12)) && (x == 1)) && (n == 1)) && (0 <= a)) || ((((((a <= 1) && (y == 1)) && (n == 0)) && (0 <= a)) && (x == 0)) && (6 == z))) || (((((2 == n) && (a == 1)) && (x == 8)) && (19 == y)) && (z == 18))) RESULT: Ultimate proved your program to be correct! [2023-11-26 10:44:18,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7617e807-6811-4986-9258-415527765c1b/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE