./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i --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_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8661b1e533413e4de6576c4feab251d05a672526bd5f59b260c6cb9f9c05939 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:08:22,224 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:08:22,289 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:08:22,293 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:08:22,294 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:08:22,317 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:08:22,317 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:08:22,318 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:08:22,318 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:08:22,319 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:08:22,319 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:08:22,320 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:08:22,321 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:08:22,321 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:08:22,322 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:08:22,322 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:08:22,323 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:08:22,324 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:08:22,324 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:08:22,325 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:08:22,325 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:08:22,326 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:08:22,326 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:08:22,327 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:08:22,327 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:08:22,328 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:08:22,328 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:08:22,329 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:08:22,329 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:08:22,330 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:08:22,330 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:08:22,331 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:08:22,331 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:08:22,332 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:08:22,332 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:08:22,333 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:08:22,333 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:08:22,334 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:08:22,334 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:08:22,334 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:08:22,335 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:08:22,335 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:08:22,335 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_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8661b1e533413e4de6576c4feab251d05a672526bd5f59b260c6cb9f9c05939 [2023-11-29 01:08:22,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:08:22,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:08:22,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:08:22,571 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:08:22,572 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:08:22,573 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i [2023-11-29 01:08:25,332 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:08:25,496 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:08:25,497 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i [2023-11-29 01:08:25,502 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/data/65c9ba729/53c285fffb4a445fb7ec8012230e659e/FLAG830b4a6ec [2023-11-29 01:08:25,514 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/data/65c9ba729/53c285fffb4a445fb7ec8012230e659e [2023-11-29 01:08:25,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:08:25,517 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:08:25,518 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:08:25,519 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:08:25,523 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:08:25,524 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:08:25" (1/1) ... [2023-11-29 01:08:25,525 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17e2ecdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:08:25, skipping insertion in model container [2023-11-29 01:08:25,525 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:08:25" (1/1) ... [2023-11-29 01:08:25,544 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:08:25,658 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_e62294d9-2e94-478f-a137-3d0752d194a6/sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i[873,886] [2023-11-29 01:08:25,667 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:08:25,676 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:08:25,686 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_e62294d9-2e94-478f-a137-3d0752d194a6/sv-benchmarks/c/loop-zilu/benchmark23_conjunctive.i[873,886] [2023-11-29 01:08:25,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:08:25,700 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:08:25,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:08:25 WrapperNode [2023-11-29 01:08:25,701 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:08:25,702 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:08:25,702 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:08:25,702 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:08:25,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:08:25" (1/1) ... [2023-11-29 01:08:25,714 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:08:25" (1/1) ... [2023-11-29 01:08:25,728 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2023-11-29 01:08:25,728 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:08:25,729 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:08:25,729 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:08:25,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:08:25,737 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:08:25" (1/1) ... [2023-11-29 01:08:25,737 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:08:25" (1/1) ... [2023-11-29 01:08:25,738 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:08:25" (1/1) ... [2023-11-29 01:08:25,747 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 01:08:25,748 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:08:25" (1/1) ... [2023-11-29 01:08:25,748 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:08:25" (1/1) ... [2023-11-29 01:08:25,751 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:08:25" (1/1) ... [2023-11-29 01:08:25,754 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:08:25" (1/1) ... [2023-11-29 01:08:25,755 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:08:25" (1/1) ... [2023-11-29 01:08:25,756 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:08:25" (1/1) ... [2023-11-29 01:08:25,757 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:08:25,758 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:08:25,758 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:08:25,758 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:08:25,759 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:08:25" (1/1) ... [2023-11-29 01:08:25,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:08:25,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:08:25,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:08:25,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:08:25,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:08:25,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:08:25,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:08:25,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:08:25,894 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:08:25,896 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:08:26,006 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:08:26,030 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:08:26,031 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:08:26,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:08:26 BoogieIcfgContainer [2023-11-29 01:08:26,031 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:08:26,034 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:08:26,034 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:08:26,038 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:08:26,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:08:25" (1/3) ... [2023-11-29 01:08:26,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160757c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:08:26, skipping insertion in model container [2023-11-29 01:08:26,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:08:25" (2/3) ... [2023-11-29 01:08:26,040 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160757c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:08:26, skipping insertion in model container [2023-11-29 01:08:26,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:08:26" (3/3) ... [2023-11-29 01:08:26,041 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark23_conjunctive.i [2023-11-29 01:08:26,062 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:08:26,062 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:08:26,112 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:08:26,119 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;@35d30e43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:08:26,120 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:08:26,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:26,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 01:08:26,131 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:08:26,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 01:08:26,133 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:08:26,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:08:26,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1839286506, now seen corresponding path program 1 times [2023-11-29 01:08:26,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:08:26,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609338520] [2023-11-29 01:08:26,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:26,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:08:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:26,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:26,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:08:26,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609338520] [2023-11-29 01:08:26,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609338520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:08:26,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:08:26,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:08:26,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829006107] [2023-11-29 01:08:26,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:08:26,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:08:26,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:08:26,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:08:26,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:08:26,335 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:26,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:08:26,355 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2023-11-29 01:08:26,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:08:26,358 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) Word has length 6 [2023-11-29 01:08:26,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:08:26,364 INFO L225 Difference]: With dead ends: 17 [2023-11-29 01:08:26,364 INFO L226 Difference]: Without dead ends: 7 [2023-11-29 01:08:26,366 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 [2023-11-29 01:08:26,369 INFO L413 NwaCegarLoop]: 9 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, 9 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:08:26,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:08:26,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2023-11-29 01:08:26,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-11-29 01:08:26,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:26,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2023-11-29 01:08:26,395 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 6 [2023-11-29 01:08:26,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:08:26,396 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2023-11-29 01:08:26,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:26,396 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2023-11-29 01:08:26,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 01:08:26,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:08:26,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 01:08:26,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:08:26,398 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:08:26,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:08:26,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1839167342, now seen corresponding path program 1 times [2023-11-29 01:08:26,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:08:26,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923238774] [2023-11-29 01:08:26,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:26,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:08:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:26,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:26,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:08:26,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923238774] [2023-11-29 01:08:26,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923238774] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:08:26,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:08:26,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:08:26,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143875099] [2023-11-29 01:08:26,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:08:26,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:08:26,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:08:26,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:08:26,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:08:26,458 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:26,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:08:26,469 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2023-11-29 01:08:26,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:08:26,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2023-11-29 01:08:26,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:08:26,470 INFO L225 Difference]: With dead ends: 12 [2023-11-29 01:08:26,470 INFO L226 Difference]: Without dead ends: 8 [2023-11-29 01:08:26,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:08:26,472 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:08:26,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:08:26,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-11-29 01:08:26,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-11-29 01:08:26,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:26,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-29 01:08:26,476 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2023-11-29 01:08:26,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:08:26,477 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-29 01:08:26,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:26,477 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-29 01:08:26,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 01:08:26,477 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:08:26,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:08:26,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:08:26,478 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:08:26,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:08:26,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1181278160, now seen corresponding path program 1 times [2023-11-29 01:08:26,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:08:26,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914445653] [2023-11-29 01:08:26,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:26,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:08:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:26,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:26,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:08:26,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914445653] [2023-11-29 01:08:26,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914445653] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:08:26,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769251280] [2023-11-29 01:08:26,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:26,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:26,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:08:26,549 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:08:26,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:08:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:26,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:08:26,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:08:26,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:26,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:08:26,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:26,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769251280] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:08:26,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:08:26,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-11-29 01:08:26,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242941779] [2023-11-29 01:08:26,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:08:26,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:08:26,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:08:26,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:08:26,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:08:26,666 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:26,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:08:26,687 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2023-11-29 01:08:26,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:08:26,687 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) Word has length 7 [2023-11-29 01:08:26,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:08:26,688 INFO L225 Difference]: With dead ends: 15 [2023-11-29 01:08:26,688 INFO L226 Difference]: Without dead ends: 11 [2023-11-29 01:08:26,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:08:26,690 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:08:26,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:08:26,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-11-29 01:08:26,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-11-29 01:08:26,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:26,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-11-29 01:08:26,695 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-11-29 01:08:26,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:08:26,696 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-11-29 01:08:26,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:26,696 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-11-29 01:08:26,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 01:08:26,697 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:08:26,697 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-29 01:08:26,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:08:26,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:26,898 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:08:26,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:08:26,898 INFO L85 PathProgramCache]: Analyzing trace with hash 149389294, now seen corresponding path program 2 times [2023-11-29 01:08:26,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:08:26,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717631500] [2023-11-29 01:08:26,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:26,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:08:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:27,044 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:27,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:08:27,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717631500] [2023-11-29 01:08:27,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717631500] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:08:27,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739773158] [2023-11-29 01:08:27,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:08:27,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:27,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:08:27,047 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:08:27,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:08:27,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:08:27,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:08:27,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:08:27,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:08:27,128 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:27,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:08:27,205 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:27,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739773158] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:08:27,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:08:27,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-29 01:08:27,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150862337] [2023-11-29 01:08:27,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:08:27,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:08:27,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:08:27,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:08:27,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:08:27,208 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:27,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:08:27,234 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2023-11-29 01:08:27,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:08:27,234 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 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) Word has length 10 [2023-11-29 01:08:27,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:08:27,235 INFO L225 Difference]: With dead ends: 21 [2023-11-29 01:08:27,235 INFO L226 Difference]: Without dead ends: 17 [2023-11-29 01:08:27,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:08:27,237 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:08:27,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:08:27,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-11-29 01:08:27,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-11-29 01:08:27,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:27,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2023-11-29 01:08:27,243 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2023-11-29 01:08:27,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:08:27,243 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2023-11-29 01:08:27,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:27,244 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2023-11-29 01:08:27,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 01:08:27,244 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:08:27,244 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2023-11-29 01:08:27,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:08:27,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:27,445 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:08:27,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:08:27,446 INFO L85 PathProgramCache]: Analyzing trace with hash 443815086, now seen corresponding path program 3 times [2023-11-29 01:08:27,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:08:27,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87188834] [2023-11-29 01:08:27,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:27,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:08:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:27,692 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:27,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:08:27,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87188834] [2023-11-29 01:08:27,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87188834] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:08:27,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201417684] [2023-11-29 01:08:27,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:08:27,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:27,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:08:27,695 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:08:27,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:08:27,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-29 01:08:27,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:08:27,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 01:08:27,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:08:27,795 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:27,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:08:28,043 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:28,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201417684] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:08:28,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:08:28,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2023-11-29 01:08:28,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137042842] [2023-11-29 01:08:28,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:08:28,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 01:08:28,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:08:28,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 01:08:28,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:08:28,047 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:28,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:08:28,093 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2023-11-29 01:08:28,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 01:08:28,093 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 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) Word has length 16 [2023-11-29 01:08:28,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:08:28,094 INFO L225 Difference]: With dead ends: 33 [2023-11-29 01:08:28,094 INFO L226 Difference]: Without dead ends: 29 [2023-11-29 01:08:28,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:08:28,096 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:08:28,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:08:28,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-29 01:08:28,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-29 01:08:28,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:28,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2023-11-29 01:08:28,103 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 16 [2023-11-29 01:08:28,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:08:28,104 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2023-11-29 01:08:28,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:28,104 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2023-11-29 01:08:28,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-29 01:08:28,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:08:28,105 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1] [2023-11-29 01:08:28,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:08:28,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:28,306 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:08:28,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:08:28,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1535217198, now seen corresponding path program 4 times [2023-11-29 01:08:28,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:08:28,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935605511] [2023-11-29 01:08:28,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:28,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:08:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:28,884 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:28,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:08:28,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935605511] [2023-11-29 01:08:28,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935605511] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:08:28,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139117867] [2023-11-29 01:08:28,885 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:08:28,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:28,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:08:28,889 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:08:28,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:08:28,952 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:08:28,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:08:28,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 01:08:28,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:08:29,015 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:29,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:08:29,817 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:29,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139117867] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:08:29,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:08:29,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 48 [2023-11-29 01:08:29,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512668228] [2023-11-29 01:08:29,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:08:29,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-29 01:08:29,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:08:29,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-29 01:08:29,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 01:08:29,822 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 48 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 48 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:29,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:08:29,908 INFO L93 Difference]: Finished difference Result 57 states and 80 transitions. [2023-11-29 01:08:29,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-29 01:08:29,909 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 48 states have internal predecessors, (52), 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) Word has length 28 [2023-11-29 01:08:29,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:08:29,910 INFO L225 Difference]: With dead ends: 57 [2023-11-29 01:08:29,911 INFO L226 Difference]: Without dead ends: 53 [2023-11-29 01:08:29,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 01:08:29,913 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:08:29,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:08:29,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-29 01:08:29,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-11-29 01:08:29,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 52 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:29,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2023-11-29 01:08:29,922 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 28 [2023-11-29 01:08:29,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:08:29,922 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2023-11-29 01:08:29,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 48 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:29,923 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2023-11-29 01:08:29,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-29 01:08:29,924 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:08:29,925 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1] [2023-11-29 01:08:29,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:08:30,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:30,125 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:08:30,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:08:30,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1220689618, now seen corresponding path program 5 times [2023-11-29 01:08:30,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:08:30,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261145651] [2023-11-29 01:08:30,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:30,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:08:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:31,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:31,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:08:31,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261145651] [2023-11-29 01:08:31,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261145651] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:08:31,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920011577] [2023-11-29 01:08:31,582 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:08:31,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:31,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:08:31,584 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:08:31,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:08:31,662 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-11-29 01:08:31,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:08:31,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-29 01:08:31,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:08:31,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:31,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:08:34,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:34,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920011577] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:08:34,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:08:34,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 96 [2023-11-29 01:08:34,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271308444] [2023-11-29 01:08:34,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:08:34,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-11-29 01:08:34,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:08:34,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-11-29 01:08:34,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2023-11-29 01:08:34,274 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand has 96 states, 96 states have (on average 1.0416666666666667) internal successors, (100), 96 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:34,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:08:34,447 INFO L93 Difference]: Finished difference Result 105 states and 152 transitions. [2023-11-29 01:08:34,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-11-29 01:08:34,449 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.0416666666666667) internal successors, (100), 96 states have internal predecessors, (100), 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) Word has length 52 [2023-11-29 01:08:34,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:08:34,451 INFO L225 Difference]: With dead ends: 105 [2023-11-29 01:08:34,451 INFO L226 Difference]: Without dead ends: 101 [2023-11-29 01:08:34,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2023-11-29 01:08:34,456 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:08:34,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:08:34,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-29 01:08:34,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-11-29 01:08:34,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.01) internal successors, (101), 100 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:34,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2023-11-29 01:08:34,471 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 52 [2023-11-29 01:08:34,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:08:34,471 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2023-11-29 01:08:34,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.0416666666666667) internal successors, (100), 96 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:34,472 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2023-11-29 01:08:34,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 01:08:34,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:08:34,477 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1] [2023-11-29 01:08:34,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 01:08:34,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:34,681 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:08:34,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:08:34,682 INFO L85 PathProgramCache]: Analyzing trace with hash 465250094, now seen corresponding path program 6 times [2023-11-29 01:08:34,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:08:34,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904207802] [2023-11-29 01:08:34,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:34,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:08:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:39,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:39,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:08:39,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904207802] [2023-11-29 01:08:39,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904207802] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:08:39,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295823899] [2023-11-29 01:08:39,112 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 01:08:39,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:39,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:08:39,113 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:08:39,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:08:39,249 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2023-11-29 01:08:39,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:08:39,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 96 conjunts are in the unsatisfiable core [2023-11-29 01:08:39,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:08:39,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:39,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:08:42,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:42,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295823899] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:08:42,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:08:42,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 102 [2023-11-29 01:08:42,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759305634] [2023-11-29 01:08:42,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:08:42,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2023-11-29 01:08:42,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:08:42,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2023-11-29 01:08:42,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2023-11-29 01:08:42,753 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand has 102 states, 102 states have (on average 1.0490196078431373) internal successors, (107), 102 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:42,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:08:42,907 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2023-11-29 01:08:42,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-11-29 01:08:42,907 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.0490196078431373) internal successors, (107), 102 states have internal predecessors, (107), 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) Word has length 100 [2023-11-29 01:08:42,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:08:42,909 INFO L225 Difference]: With dead ends: 111 [2023-11-29 01:08:42,909 INFO L226 Difference]: Without dead ends: 107 [2023-11-29 01:08:42,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 105 SyntacticMatches, 90 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4455 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2023-11-29 01:08:42,912 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:08:42,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:08:42,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-29 01:08:42,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2023-11-29 01:08:42,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.009433962264151) internal successors, (107), 106 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:42,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2023-11-29 01:08:42,921 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 100 [2023-11-29 01:08:42,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:08:42,921 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2023-11-29 01:08:42,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 1.0490196078431373) internal successors, (107), 102 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:42,921 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2023-11-29 01:08:42,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-29 01:08:42,922 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:08:42,923 INFO L195 NwaCegarLoop]: trace histogram [100, 1, 1, 1, 1, 1, 1] [2023-11-29 01:08:42,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:08:43,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 01:08:43,123 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:08:43,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:08:43,124 INFO L85 PathProgramCache]: Analyzing trace with hash -314749970, now seen corresponding path program 7 times [2023-11-29 01:08:43,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:08:43,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639146091] [2023-11-29 01:08:43,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:43,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:08:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:47,848 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:47,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:08:47,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639146091] [2023-11-29 01:08:47,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639146091] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:08:47,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746747004] [2023-11-29 01:08:47,849 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 01:08:47,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:47,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:08:47,850 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:08:47,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:08:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:47,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 208 conjunts are in the unsatisfiable core [2023-11-29 01:08:47,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:08:48,219 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:48,220 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:08:48,392 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:48,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746747004] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:08:48,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:08:48,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104, 104] total 105 [2023-11-29 01:08:48,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408834950] [2023-11-29 01:08:48,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:08:48,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2023-11-29 01:08:48,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:08:48,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2023-11-29 01:08:48,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=10712, Unknown=0, NotChecked=0, Total=10920 [2023-11-29 01:08:48,399 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand has 105 states, 105 states have (on average 1.0285714285714285) internal successors, (108), 105 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:51,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:08:51,855 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2023-11-29 01:08:51,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-11-29 01:08:51,856 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 1.0285714285714285) internal successors, (108), 105 states have internal predecessors, (108), 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) Word has length 106 [2023-11-29 01:08:51,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:08:51,857 INFO L225 Difference]: With dead ends: 112 [2023-11-29 01:08:51,857 INFO L226 Difference]: Without dead ends: 108 [2023-11-29 01:08:51,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=213, Invalid=10917, Unknown=0, NotChecked=0, Total=11130 [2023-11-29 01:08:51,861 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 10714 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 10714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:08:51,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 313 Invalid, 10714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10714 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-29 01:08:51,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-29 01:08:51,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-11-29 01:08:51,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.0093457943925233) internal successors, (108), 107 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:51,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2023-11-29 01:08:51,870 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2023-11-29 01:08:51,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:08:51,871 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2023-11-29 01:08:51,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 1.0285714285714285) internal successors, (108), 105 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:51,871 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2023-11-29 01:08:51,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-29 01:08:51,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:08:51,873 INFO L195 NwaCegarLoop]: trace histogram [101, 1, 1, 1, 1, 1, 1] [2023-11-29 01:08:51,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:08:52,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 01:08:52,073 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:08:52,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:08:52,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1165649072, now seen corresponding path program 8 times [2023-11-29 01:08:52,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:08:52,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302712462] [2023-11-29 01:08:52,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:52,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:08:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:57,014 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 5151 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:08:57,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:08:57,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302712462] [2023-11-29 01:08:57,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302712462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:08:57,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:08:57,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2023-11-29 01:08:57,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511327520] [2023-11-29 01:08:57,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:08:57,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2023-11-29 01:08:57,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:08:57,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2023-11-29 01:08:57,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2023-11-29 01:08:57,019 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand has 103 states, 103 states have (on average 1.0388349514563107) internal successors, (107), 103 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:57,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:08:57,330 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2023-11-29 01:08:57,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2023-11-29 01:08:57,330 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.0388349514563107) internal successors, (107), 103 states have internal predecessors, (107), 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) Word has length 107 [2023-11-29 01:08:57,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:08:57,331 INFO L225 Difference]: With dead ends: 108 [2023-11-29 01:08:57,331 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 01:08:57,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2023-11-29 01:08:57,333 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:08:57,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:08:57,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 01:08:57,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 01:08:57,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:57,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 01:08:57,334 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 107 [2023-11-29 01:08:57,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:08:57,334 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 01:08:57,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.0388349514563107) internal successors, (107), 103 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:08:57,335 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 01:08:57,335 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 01:08:57,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 01:08:57,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 01:08:57,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 01:08:58,839 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-29 01:08:58,841 INFO L895 garLoopResultBuilder]: At program point L23-2(lines 23 26) the Hoare annotation is: (or (and (= |ULTIMATE.start_main_~j~0#1| 124) (= 62 |ULTIMATE.start_main_~i~0#1|)) (and (= |ULTIMATE.start_main_~i~0#1| 11) (= 22 |ULTIMATE.start_main_~j~0#1|)) (and (= 76 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~i~0#1| 38)) (and (= 41 |ULTIMATE.start_main_~i~0#1|) (= 82 |ULTIMATE.start_main_~j~0#1|)) (and (= 94 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~j~0#1| 188)) (and (= |ULTIMATE.start_main_~i~0#1| 15) (= 30 |ULTIMATE.start_main_~j~0#1|)) (and (= |ULTIMATE.start_main_~i~0#1| 63) (= |ULTIMATE.start_main_~j~0#1| 126)) (and (= 23 |ULTIMATE.start_main_~i~0#1|) (= 46 |ULTIMATE.start_main_~j~0#1|)) (and (= |ULTIMATE.start_main_~j~0#1| 80) (= 40 |ULTIMATE.start_main_~i~0#1|)) (and (= 134 |ULTIMATE.start_main_~j~0#1|) (= 67 |ULTIMATE.start_main_~i~0#1|)) (and (= 154 |ULTIMATE.start_main_~j~0#1|) (= 77 |ULTIMATE.start_main_~i~0#1|)) (and (= 9 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~j~0#1| 18)) (and (= |ULTIMATE.start_main_~i~0#1| 4) (= |ULTIMATE.start_main_~j~0#1| 8)) (and (= |ULTIMATE.start_main_~j~0#1| 166) (= |ULTIMATE.start_main_~i~0#1| 83)) (and (= |ULTIMATE.start_main_~j~0#1| 12) (= 6 |ULTIMATE.start_main_~i~0#1|)) (and (= 88 |ULTIMATE.start_main_~i~0#1|) (= 176 |ULTIMATE.start_main_~j~0#1|)) (and (= 88 |ULTIMATE.start_main_~j~0#1|) (= 44 |ULTIMATE.start_main_~i~0#1|)) (and (= |ULTIMATE.start_main_~i~0#1| 26) (= 52 |ULTIMATE.start_main_~j~0#1|)) (and (= |ULTIMATE.start_main_~i~0#1| 39) (= |ULTIMATE.start_main_~j~0#1| 78)) (and (= 68 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~i~0#1| 34)) (and (= 7 |ULTIMATE.start_main_~i~0#1|) (= 14 |ULTIMATE.start_main_~j~0#1|)) (and (= 32 |ULTIMATE.start_main_~j~0#1|) (= 16 |ULTIMATE.start_main_~i~0#1|)) (and (= |ULTIMATE.start_main_~i~0#1| 93) (= |ULTIMATE.start_main_~j~0#1| 186)) (and (= |ULTIMATE.start_main_~j~0#1| 180) (= |ULTIMATE.start_main_~i~0#1| 90)) (and (= |ULTIMATE.start_main_~j~0#1| 26) (= |ULTIMATE.start_main_~i~0#1| 13)) (and (= 42 |ULTIMATE.start_main_~i~0#1|) (= 84 |ULTIMATE.start_main_~j~0#1|)) (and (= |ULTIMATE.start_main_~j~0#1| 38) (= 19 |ULTIMATE.start_main_~i~0#1|)) (and (= 68 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~j~0#1| 136)) (and (= 40 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~i~0#1| 20)) (and (= 71 |ULTIMATE.start_main_~i~0#1|) (= 142 |ULTIMATE.start_main_~j~0#1|)) (and (= |ULTIMATE.start_main_~i~0#1| 8) (= 16 |ULTIMATE.start_main_~j~0#1|)) (and (<= 100 |ULTIMATE.start_main_~i~0#1|) (= 200 |ULTIMATE.start_main_~j~0#1|)) (and (= 56 |ULTIMATE.start_main_~i~0#1|) (= 112 |ULTIMATE.start_main_~j~0#1|)) (and (= 2 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~i~0#1| 1)) (and (= 91 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~j~0#1| 182)) (and (= 156 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~i~0#1| 78)) (and (= 35 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~j~0#1| 70)) (and (= |ULTIMATE.start_main_~j~0#1| 100) (= |ULTIMATE.start_main_~i~0#1| 50)) (and (= |ULTIMATE.start_main_~j~0#1| 50) (= |ULTIMATE.start_main_~i~0#1| 25)) (and (= |ULTIMATE.start_main_~i~0#1| 0) (= |ULTIMATE.start_main_~j~0#1| 0)) (and (= |ULTIMATE.start_main_~j~0#1| 198) (= |ULTIMATE.start_main_~i~0#1| 99)) (and (= 108 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~i~0#1| 54)) (and (= |ULTIMATE.start_main_~i~0#1| 96) (= 192 |ULTIMATE.start_main_~j~0#1|)) (and (= |ULTIMATE.start_main_~j~0#1| 90) (= |ULTIMATE.start_main_~i~0#1| 45)) (and (= 144 |ULTIMATE.start_main_~j~0#1|) (= 72 |ULTIMATE.start_main_~i~0#1|)) (and (= 57 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~j~0#1| 114)) (and (= |ULTIMATE.start_main_~i~0#1| 80) (= 160 |ULTIMATE.start_main_~j~0#1|)) (and (= |ULTIMATE.start_main_~i~0#1| 79) (= 158 |ULTIMATE.start_main_~j~0#1|)) (and (= 190 |ULTIMATE.start_main_~j~0#1|) (= 95 |ULTIMATE.start_main_~i~0#1|)) (and (= |ULTIMATE.start_main_~i~0#1| 43) (= |ULTIMATE.start_main_~j~0#1| 86)) (and (= |ULTIMATE.start_main_~j~0#1| 60) (= 30 |ULTIMATE.start_main_~i~0#1|)) (and (= 46 |ULTIMATE.start_main_~i~0#1|) (= 92 |ULTIMATE.start_main_~j~0#1|)) (and (= 106 |ULTIMATE.start_main_~j~0#1|) (= 53 |ULTIMATE.start_main_~i~0#1|)) (and (= |ULTIMATE.start_main_~i~0#1| 33) (= 66 |ULTIMATE.start_main_~j~0#1|)) (and (= |ULTIMATE.start_main_~i~0#1| 86) (= |ULTIMATE.start_main_~j~0#1| 172)) (and (= 64 |ULTIMATE.start_main_~j~0#1|) (= 32 |ULTIMATE.start_main_~i~0#1|)) (and (= |ULTIMATE.start_main_~i~0#1| 60) (= |ULTIMATE.start_main_~j~0#1| 120)) (and (= 5 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~j~0#1| 10)) (and (= |ULTIMATE.start_main_~j~0#1| 162) (= 81 |ULTIMATE.start_main_~i~0#1|)) (and (= 29 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~j~0#1| 58)) (and (= 14 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~j~0#1| 28)) (and (= 94 |ULTIMATE.start_main_~j~0#1|) (= 47 |ULTIMATE.start_main_~i~0#1|)) (and (= |ULTIMATE.start_main_~i~0#1| 28) (= 56 |ULTIMATE.start_main_~j~0#1|)) (and (= 62 |ULTIMATE.start_main_~j~0#1|) (= 31 |ULTIMATE.start_main_~i~0#1|)) (and (= 194 |ULTIMATE.start_main_~j~0#1|) (= 97 |ULTIMATE.start_main_~i~0#1|)) (and (= |ULTIMATE.start_main_~i~0#1| 55) (= 110 |ULTIMATE.start_main_~j~0#1|)) (and (= |ULTIMATE.start_main_~j~0#1| 54) (= |ULTIMATE.start_main_~i~0#1| 27)) (and (= |ULTIMATE.start_main_~j~0#1| 102) (= 51 |ULTIMATE.start_main_~i~0#1|)) (and (= 164 |ULTIMATE.start_main_~j~0#1|) (= 82 |ULTIMATE.start_main_~i~0#1|)) (and (= 138 |ULTIMATE.start_main_~j~0#1|) (= 69 |ULTIMATE.start_main_~i~0#1|)) (and (= 64 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~j~0#1| 128)) (and (= |ULTIMATE.start_main_~j~0#1| 130) (= |ULTIMATE.start_main_~i~0#1| 65)) (and (= |ULTIMATE.start_main_~i~0#1| 61) (= |ULTIMATE.start_main_~j~0#1| 122)) (and (= 6 |ULTIMATE.start_main_~j~0#1|) (= 3 |ULTIMATE.start_main_~i~0#1|)) (and (= 104 |ULTIMATE.start_main_~j~0#1|) (= 52 |ULTIMATE.start_main_~i~0#1|)) (and (= 98 |ULTIMATE.start_main_~j~0#1|) (= 49 |ULTIMATE.start_main_~i~0#1|)) (and (= |ULTIMATE.start_main_~j~0#1| 36) (= |ULTIMATE.start_main_~i~0#1| 18)) (and (= 196 |ULTIMATE.start_main_~j~0#1|) (= 98 |ULTIMATE.start_main_~i~0#1|)) (and (= |ULTIMATE.start_main_~i~0#1| 85) (= 170 |ULTIMATE.start_main_~j~0#1|)) (and (= |ULTIMATE.start_main_~i~0#1| 24) (= |ULTIMATE.start_main_~j~0#1| 48)) (and (= 152 |ULTIMATE.start_main_~j~0#1|) (= 76 |ULTIMATE.start_main_~i~0#1|)) (and (= |ULTIMATE.start_main_~i~0#1| 17) (= |ULTIMATE.start_main_~j~0#1| 34)) (and (= |ULTIMATE.start_main_~j~0#1| 20) (= |ULTIMATE.start_main_~i~0#1| 10)) (and (= 66 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~j~0#1| 132)) (and (= |ULTIMATE.start_main_~i~0#1| 12) (= |ULTIMATE.start_main_~j~0#1| 24)) (and (= |ULTIMATE.start_main_~j~0#1| 168) (= 84 |ULTIMATE.start_main_~i~0#1|)) (and (= |ULTIMATE.start_main_~i~0#1| 70) (= 140 |ULTIMATE.start_main_~j~0#1|)) (and (= 92 |ULTIMATE.start_main_~i~0#1|) (= 184 |ULTIMATE.start_main_~j~0#1|)) (and (= |ULTIMATE.start_main_~j~0#1| 96) (= |ULTIMATE.start_main_~i~0#1| 48)) (and (= |ULTIMATE.start_main_~j~0#1| 4) (= 2 |ULTIMATE.start_main_~i~0#1|)) (and (= 21 |ULTIMATE.start_main_~i~0#1|) (= 42 |ULTIMATE.start_main_~j~0#1|)) (and (= 22 |ULTIMATE.start_main_~i~0#1|) (= 44 |ULTIMATE.start_main_~j~0#1|)) (and (= 146 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~i~0#1| 73)) (and (= 116 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_main_~i~0#1| 58)) (and (= 178 |ULTIMATE.start_main_~j~0#1|) (= 89 |ULTIMATE.start_main_~i~0#1|)) (and (= |ULTIMATE.start_main_~i~0#1| 37) (= |ULTIMATE.start_main_~j~0#1| 74)) (and (= |ULTIMATE.start_main_~i~0#1| 75) (= |ULTIMATE.start_main_~j~0#1| 150)) (and (= |ULTIMATE.start_main_~i~0#1| 74) (= 148 |ULTIMATE.start_main_~j~0#1|)) (and (= |ULTIMATE.start_main_~i~0#1| 36) (= 72 |ULTIMATE.start_main_~j~0#1|)) (and (= 87 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~j~0#1| 174)) (and (= |ULTIMATE.start_main_~j~0#1| 118) (= 59 |ULTIMATE.start_main_~i~0#1|))) [2023-11-29 01:08:58,842 INFO L899 garLoopResultBuilder]: For program point L23-3(lines 23 26) no Hoare annotation was computed. [2023-11-29 01:08:58,842 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2023-11-29 01:08:58,842 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 01:08:58,842 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 19 29) no Hoare annotation was computed. [2023-11-29 01:08:58,842 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2023-11-29 01:08:58,842 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2023-11-29 01:08:58,842 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2023-11-29 01:08:58,842 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2023-11-29 01:08:58,846 INFO L445 BasicCegarLoop]: Path program histogram: [8, 1, 1] [2023-11-29 01:08:58,848 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 01:08:58,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 01:08:58 BoogieIcfgContainer [2023-11-29 01:08:58,875 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 01:08:58,876 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 01:08:58,876 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 01:08:58,876 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 01:08:58,876 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:08:26" (3/4) ... [2023-11-29 01:08:58,878 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 01:08:58,883 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-29 01:08:58,883 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-29 01:08:58,884 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 01:08:58,884 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 01:08:58,963 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 01:08:58,964 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 01:08:58,964 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 01:08:58,965 INFO L158 Benchmark]: Toolchain (without parser) took 33447.51ms. Allocated memory was 153.1MB in the beginning and 260.0MB in the end (delta: 107.0MB). Free memory was 121.2MB in the beginning and 113.0MB in the end (delta: 8.2MB). Peak memory consumption was 116.6MB. Max. memory is 16.1GB. [2023-11-29 01:08:58,965 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 153.1MB. Free memory is still 101.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:08:58,965 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.50ms. Allocated memory is still 153.1MB. Free memory was 121.2MB in the beginning and 110.9MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 01:08:58,966 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.67ms. Allocated memory is still 153.1MB. Free memory was 110.9MB in the beginning and 109.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 01:08:58,966 INFO L158 Benchmark]: Boogie Preprocessor took 28.66ms. Allocated memory is still 153.1MB. Free memory was 109.6MB in the beginning and 108.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:08:58,967 INFO L158 Benchmark]: RCFGBuilder took 273.40ms. Allocated memory is still 153.1MB. Free memory was 108.0MB in the beginning and 97.9MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 01:08:58,967 INFO L158 Benchmark]: TraceAbstraction took 32841.18ms. Allocated memory was 153.1MB in the beginning and 260.0MB in the end (delta: 107.0MB). Free memory was 97.5MB in the beginning and 117.2MB in the end (delta: -19.7MB). Peak memory consumption was 131.4MB. Max. memory is 16.1GB. [2023-11-29 01:08:58,968 INFO L158 Benchmark]: Witness Printer took 88.56ms. Allocated memory is still 260.0MB. Free memory was 117.2MB in the beginning and 113.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 01:08:58,969 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 153.1MB. Free memory is still 101.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 182.50ms. Allocated memory is still 153.1MB. Free memory was 121.2MB in the beginning and 110.9MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.67ms. Allocated memory is still 153.1MB. Free memory was 110.9MB in the beginning and 109.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.66ms. Allocated memory is still 153.1MB. Free memory was 109.6MB in the beginning and 108.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 273.40ms. Allocated memory is still 153.1MB. Free memory was 108.0MB in the beginning and 97.9MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 32841.18ms. Allocated memory was 153.1MB in the beginning and 260.0MB in the end (delta: 107.0MB). Free memory was 97.5MB in the beginning and 117.2MB in the end (delta: -19.7MB). Peak memory consumption was 131.4MB. Max. memory is 16.1GB. * Witness Printer took 88.56ms. Allocated memory is still 260.0MB. Free memory was 117.2MB in the beginning and 113.0MB 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: 16]: 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 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 32.8s, OverallIterations: 10, TraceHistogramMax: 101, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 430 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 381 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11587 IncrementalHoareTripleChecker+Invalid, 11592 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 49 mSDtfsCounter, 11587 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1032 GetRequests, 460 SyntacticMatches, 90 SemanticMatches, 482 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4455 ImplicationChecksByTransitivity, 17.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=9, InterpolantAutomatonStates: 500, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 102 NumberOfFragments, 708 HoareAnnotationTreeSize, 1 FomulaSimplifications, 564 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 24.0s InterpolantComputationTime, 757 NumberOfCodeBlocks, 757 NumberOfCodeBlocksAsserted, 94 NumberOfCheckSat, 1052 ConstructedInterpolants, 0 QuantifiedInterpolants, 2974 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1616 ConjunctsInSsa, 397 ConjunctsInUnsatCore, 24 InterpolantComputations, 3 PerfectInterpolantSequences, 5151/37896 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: 23]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((j == 124) && (62 == i)) || ((i == 11) && (22 == j))) || ((76 == j) && (i == 38))) || ((41 == i) && (82 == j))) || ((94 == i) && (j == 188))) || ((i == 15) && (30 == j))) || ((i == 63) && (j == 126))) || ((23 == i) && (46 == j))) || ((j == 80) && (40 == i))) || ((134 == j) && (67 == i))) || ((154 == j) && (77 == i))) || ((9 == i) && (j == 18))) || ((i == 4) && (j == 8))) || ((j == 166) && (i == 83))) || ((j == 12) && (6 == i))) || ((88 == i) && (176 == j))) || ((88 == j) && (44 == i))) || ((i == 26) && (52 == j))) || ((i == 39) && (j == 78))) || ((68 == j) && (i == 34))) || ((7 == i) && (14 == j))) || ((32 == j) && (16 == i))) || ((i == 93) && (j == 186))) || ((j == 180) && (i == 90))) || ((j == 26) && (i == 13))) || ((42 == i) && (84 == j))) || ((j == 38) && (19 == i))) || ((68 == i) && (j == 136))) || ((40 == j) && (i == 20))) || ((71 == i) && (142 == j))) || ((i == 8) && (16 == j))) || ((100 <= i) && (200 == j))) || ((56 == i) && (112 == j))) || ((2 == j) && (i == 1))) || ((91 == i) && (j == 182))) || ((156 == j) && (i == 78))) || ((35 == i) && (j == 70))) || ((j == 100) && (i == 50))) || ((j == 50) && (i == 25))) || ((i == 0) && (j == 0))) || ((j == 198) && (i == 99))) || ((108 == j) && (i == 54))) || ((i == 96) && (192 == j))) || ((j == 90) && (i == 45))) || ((144 == j) && (72 == i))) || ((57 == i) && (j == 114))) || ((i == 80) && (160 == j))) || ((i == 79) && (158 == j))) || ((190 == j) && (95 == i))) || ((i == 43) && (j == 86))) || ((j == 60) && (30 == i))) || ((46 == i) && (92 == j))) || ((106 == j) && (53 == i))) || ((i == 33) && (66 == j))) || ((i == 86) && (j == 172))) || ((64 == j) && (32 == i))) || ((i == 60) && (j == 120))) || ((5 == i) && (j == 10))) || ((j == 162) && (81 == i))) || ((29 == i) && (j == 58))) || ((14 == i) && (j == 28))) || ((94 == j) && (47 == i))) || ((i == 28) && (56 == j))) || ((62 == j) && (31 == i))) || ((194 == j) && (97 == i))) || ((i == 55) && (110 == j))) || ((j == 54) && (i == 27))) || ((j == 102) && (51 == i))) || ((164 == j) && (82 == i))) || ((138 == j) && (69 == i))) || ((64 == i) && (j == 128))) || ((j == 130) && (i == 65))) || ((i == 61) && (j == 122))) || ((6 == j) && (3 == i))) || ((104 == j) && (52 == i))) || ((98 == j) && (49 == i))) || ((j == 36) && (i == 18))) || ((196 == j) && (98 == i))) || ((i == 85) && (170 == j))) || ((i == 24) && (j == 48))) || ((152 == j) && (76 == i))) || ((i == 17) && (j == 34))) || ((j == 20) && (i == 10))) || ((66 == i) && (j == 132))) || ((i == 12) && (j == 24))) || ((j == 168) && (84 == i))) || ((i == 70) && (140 == j))) || ((92 == i) && (184 == j))) || ((j == 96) && (i == 48))) || ((j == 4) && (2 == i))) || ((21 == i) && (42 == j))) || ((22 == i) && (44 == j))) || ((146 == j) && (i == 73))) || ((116 == j) && (i == 58))) || ((178 == j) && (89 == i))) || ((i == 37) && (j == 74))) || ((i == 75) && (j == 150))) || ((i == 74) && (148 == j))) || ((i == 36) && (72 == j))) || ((87 == i) && (j == 174))) || ((j == 118) && (59 == i))) RESULT: Ultimate proved your program to be correct! [2023-11-29 01:08:58,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62294d9-2e94-478f-a137-3d0752d194a6/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE