./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-87.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/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_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-87.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/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_c4f706e1-ab05-4e07-bd54-48007daabfc1/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 35d5d98b2de2e0b78fe3c9610b248d897f0c998920a2ad434c7b6ace2f6d7db4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:29:00,582 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:29:00,643 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-28 23:29:00,647 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:29:00,648 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:29:00,672 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:29:00,672 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:29:00,673 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:29:00,673 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:29:00,674 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:29:00,674 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:29:00,675 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:29:00,676 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:29:00,676 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:29:00,677 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:29:00,677 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:29:00,678 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:29:00,678 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:29:00,679 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:29:00,679 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:29:00,680 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:29:00,681 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:29:00,681 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:29:00,681 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:29:00,682 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:29:00,682 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:29:00,683 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:29:00,683 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:29:00,684 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:29:00,684 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:29:00,684 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:29:00,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:29:00,685 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:29:00,685 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:29:00,686 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:29:00,686 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:29:00,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:29:00,686 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:29:00,686 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:29:00,686 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:29:00,687 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:29:00,687 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:29:00,687 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_c4f706e1-ab05-4e07-bd54-48007daabfc1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35d5d98b2de2e0b78fe3c9610b248d897f0c998920a2ad434c7b6ace2f6d7db4 [2023-11-28 23:29:00,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:29:00,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:29:00,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:29:00,922 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:29:00,922 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:29:00,924 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-87.i [2023-11-28 23:29:03,692 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:29:03,853 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:29:03,853 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-87.i [2023-11-28 23:29:03,861 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/data/5770b8a80/6d9a418741944b2981a93d1f07c00d2b/FLAG578f6c5e8 [2023-11-28 23:29:03,873 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/data/5770b8a80/6d9a418741944b2981a93d1f07c00d2b [2023-11-28 23:29:03,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:29:03,877 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:29:03,878 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:29:03,878 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:29:03,882 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:29:03,883 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:29:03" (1/1) ... [2023-11-28 23:29:03,883 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@498d08d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:29:03, skipping insertion in model container [2023-11-28 23:29:03,884 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:29:03" (1/1) ... [2023-11-28 23:29:03,909 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:29:04,027 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_c4f706e1-ab05-4e07-bd54-48007daabfc1/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-87.i[916,929] [2023-11-28 23:29:04,076 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:29:04,087 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:29:04,097 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_c4f706e1-ab05-4e07-bd54-48007daabfc1/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-87.i[916,929] [2023-11-28 23:29:04,130 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:29:04,148 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:29:04,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:29:04 WrapperNode [2023-11-28 23:29:04,148 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:29:04,149 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:29:04,149 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:29:04,150 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:29:04,155 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:29:04" (1/1) ... [2023-11-28 23:29:04,168 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:29:04" (1/1) ... [2023-11-28 23:29:04,207 INFO L138 Inliner]: procedures = 26, calls = 145, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 353 [2023-11-28 23:29:04,207 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:29:04,208 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:29:04,208 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:29:04,208 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:29:04,219 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:29:04" (1/1) ... [2023-11-28 23:29:04,219 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:29:04" (1/1) ... [2023-11-28 23:29:04,225 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:29:04" (1/1) ... [2023-11-28 23:29:04,243 INFO L175 MemorySlicer]: Split 119 memory accesses to 2 slices as follows [2, 117]. 98 percent of accesses are in the largest equivalence class. The 15 initializations are split as follows [2, 13]. The 17 writes are split as follows [0, 17]. [2023-11-28 23:29:04,244 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:29:04" (1/1) ... [2023-11-28 23:29:04,244 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:29:04" (1/1) ... [2023-11-28 23:29:04,264 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:29:04" (1/1) ... [2023-11-28 23:29:04,268 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:29:04" (1/1) ... [2023-11-28 23:29:04,271 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:29:04" (1/1) ... [2023-11-28 23:29:04,273 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:29:04" (1/1) ... [2023-11-28 23:29:04,278 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:29:04,279 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:29:04,279 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:29:04,279 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:29:04,280 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:29:04" (1/1) ... [2023-11-28 23:29:04,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:29:04,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:29:04,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:29:04,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:29:04,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:29:04,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-28 23:29:04,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-28 23:29:04,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-28 23:29:04,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-28 23:29:04,352 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-28 23:29:04,352 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-28 23:29:04,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 23:29:04,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 23:29:04,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:29:04,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:29:04,452 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:29:04,454 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:29:04,801 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:29:04,832 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:29:04,832 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-28 23:29:04,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:29:04 BoogieIcfgContainer [2023-11-28 23:29:04,833 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:29:04,835 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:29:04,836 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:29:04,839 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:29:04,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:29:03" (1/3) ... [2023-11-28 23:29:04,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11999f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:29:04, skipping insertion in model container [2023-11-28 23:29:04,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:29:04" (2/3) ... [2023-11-28 23:29:04,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11999f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:29:04, skipping insertion in model container [2023-11-28 23:29:04,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:29:04" (3/3) ... [2023-11-28 23:29:04,842 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-87.i [2023-11-28 23:29:04,855 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:29:04,856 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-28 23:29:04,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:29:04,911 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;@5fc1b61e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:29:04,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-28 23:29:04,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 63 states have (on average 1.4126984126984128) internal successors, (89), 64 states have internal predecessors, (89), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-28 23:29:04,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-28 23:29:04,929 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:29:04,930 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:29:04,931 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:29:04,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:29:04,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1262780580, now seen corresponding path program 1 times [2023-11-28 23:29:04,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:29:04,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716547561] [2023-11-28 23:29:04,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:04,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:29:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:29:05,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:29:05,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716547561] [2023-11-28 23:29:05,138 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-28 23:29:05,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232671550] [2023-11-28 23:29:05,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:05,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:05,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:29:05,147 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:29:05,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 23:29:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:29:05,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-28 23:29:05,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:29:05,389 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2023-11-28 23:29:05,389 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:29:05,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232671550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:29:05,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:29:05,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:29:05,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227888230] [2023-11-28 23:29:05,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:29:05,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-28 23:29:05,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:29:05,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-28 23:29:05,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 23:29:05,430 INFO L87 Difference]: Start difference. First operand has 80 states, 63 states have (on average 1.4126984126984128) internal successors, (89), 64 states have internal predecessors, (89), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-28 23:29:05,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:29:05,469 INFO L93 Difference]: Finished difference Result 157 states and 246 transitions. [2023-11-28 23:29:05,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-28 23:29:05,472 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 106 [2023-11-28 23:29:05,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:29:05,480 INFO L225 Difference]: With dead ends: 157 [2023-11-28 23:29:05,480 INFO L226 Difference]: Without dead ends: 78 [2023-11-28 23:29:05,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 23:29:05,488 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:29:05,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:29:05,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-28 23:29:05,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-11-28 23:29:05,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 62 states have (on average 1.3225806451612903) internal successors, (82), 62 states have internal predecessors, (82), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-28 23:29:05,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 110 transitions. [2023-11-28 23:29:05,536 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 110 transitions. Word has length 106 [2023-11-28 23:29:05,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:29:05,537 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 110 transitions. [2023-11-28 23:29:05,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-28 23:29:05,538 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 110 transitions. [2023-11-28 23:29:05,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-28 23:29:05,541 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:29:05,541 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:29:05,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 23:29:05,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:05,743 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:29:05,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:29:05,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1280643464, now seen corresponding path program 1 times [2023-11-28 23:29:05,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:29:05,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312244739] [2023-11-28 23:29:05,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:05,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:29:05,819 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:29:05,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1088335520] [2023-11-28 23:29:05,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:05,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:05,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:29:05,821 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:29:05,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 23:29:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:29:05,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:29:05,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:29:06,021 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-28 23:29:06,022 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:29:06,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:29:06,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312244739] [2023-11-28 23:29:06,022 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:29:06,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088335520] [2023-11-28 23:29:06,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088335520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:29:06,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:29:06,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:29:06,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324157743] [2023-11-28 23:29:06,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:29:06,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:29:06,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:29:06,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:29:06,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:29:06,026 INFO L87 Difference]: Start difference. First operand 78 states and 110 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:06,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:29:06,087 INFO L93 Difference]: Finished difference Result 167 states and 236 transitions. [2023-11-28 23:29:06,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:29:06,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 106 [2023-11-28 23:29:06,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:29:06,090 INFO L225 Difference]: With dead ends: 167 [2023-11-28 23:29:06,090 INFO L226 Difference]: Without dead ends: 90 [2023-11-28 23:29:06,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:29:06,093 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 21 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:29:06,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 309 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:29:06,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-28 23:29:06,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 80. [2023-11-28 23:29:06,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 64 states have (on average 1.3125) internal successors, (84), 64 states have internal predecessors, (84), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-28 23:29:06,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 112 transitions. [2023-11-28 23:29:06,108 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 112 transitions. Word has length 106 [2023-11-28 23:29:06,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:29:06,110 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 112 transitions. [2023-11-28 23:29:06,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:06,110 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 112 transitions. [2023-11-28 23:29:06,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-28 23:29:06,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:29:06,113 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:29:06,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 23:29:06,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:06,315 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:29:06,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:29:06,316 INFO L85 PathProgramCache]: Analyzing trace with hash 471296838, now seen corresponding path program 1 times [2023-11-28 23:29:06,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:29:06,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575205129] [2023-11-28 23:29:06,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:06,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:29:06,365 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:29:06,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404671587] [2023-11-28 23:29:06,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:06,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:06,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:29:06,366 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:29:06,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 23:29:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:29:06,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:29:06,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:29:06,532 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-28 23:29:06,532 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:29:06,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:29:06,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575205129] [2023-11-28 23:29:06,532 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:29:06,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404671587] [2023-11-28 23:29:06,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404671587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:29:06,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:29:06,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:29:06,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288808340] [2023-11-28 23:29:06,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:29:06,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:29:06,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:29:06,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:29:06,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:29:06,535 INFO L87 Difference]: Start difference. First operand 80 states and 112 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:06,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:29:06,587 INFO L93 Difference]: Finished difference Result 167 states and 234 transitions. [2023-11-28 23:29:06,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:29:06,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 106 [2023-11-28 23:29:06,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:29:06,590 INFO L225 Difference]: With dead ends: 167 [2023-11-28 23:29:06,590 INFO L226 Difference]: Without dead ends: 88 [2023-11-28 23:29:06,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:29:06,592 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 12 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:29:06,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 307 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:29:06,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-28 23:29:06,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 82. [2023-11-28 23:29:06,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 66 states have (on average 1.303030303030303) internal successors, (86), 66 states have internal predecessors, (86), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-28 23:29:06,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 114 transitions. [2023-11-28 23:29:06,604 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 114 transitions. Word has length 106 [2023-11-28 23:29:06,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:29:06,605 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 114 transitions. [2023-11-28 23:29:06,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:06,606 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 114 transitions. [2023-11-28 23:29:06,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-28 23:29:06,608 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:29:06,608 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:29:06,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 23:29:06,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:06,814 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:29:06,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:29:06,815 INFO L85 PathProgramCache]: Analyzing trace with hash 528555140, now seen corresponding path program 1 times [2023-11-28 23:29:06,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:29:06,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810335667] [2023-11-28 23:29:06,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:06,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:29:06,854 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:29:06,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1718555438] [2023-11-28 23:29:06,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:06,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:06,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:29:06,871 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:29:06,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 23:29:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:29:07,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:29:07,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:29:07,039 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-28 23:29:07,039 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:29:07,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:29:07,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810335667] [2023-11-28 23:29:07,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:29:07,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718555438] [2023-11-28 23:29:07,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718555438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:29:07,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:29:07,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:29:07,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390885527] [2023-11-28 23:29:07,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:29:07,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:29:07,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:29:07,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:29:07,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:29:07,043 INFO L87 Difference]: Start difference. First operand 82 states and 114 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:07,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:29:07,089 INFO L93 Difference]: Finished difference Result 167 states and 232 transitions. [2023-11-28 23:29:07,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:29:07,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 106 [2023-11-28 23:29:07,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:29:07,091 INFO L225 Difference]: With dead ends: 167 [2023-11-28 23:29:07,091 INFO L226 Difference]: Without dead ends: 86 [2023-11-28 23:29:07,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:29:07,093 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 3 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:29:07,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 307 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:29:07,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-28 23:29:07,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2023-11-28 23:29:07,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 68 states have (on average 1.2941176470588236) internal successors, (88), 68 states have internal predecessors, (88), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-28 23:29:07,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 116 transitions. [2023-11-28 23:29:07,104 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 116 transitions. Word has length 106 [2023-11-28 23:29:07,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:29:07,104 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 116 transitions. [2023-11-28 23:29:07,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:07,105 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 116 transitions. [2023-11-28 23:29:07,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-28 23:29:07,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:29:07,107 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:29:07,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-28 23:29:07,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:07,314 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:29:07,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:29:07,314 INFO L85 PathProgramCache]: Analyzing trace with hash 528614722, now seen corresponding path program 1 times [2023-11-28 23:29:07,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:29:07,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299785505] [2023-11-28 23:29:07,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:07,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:29:07,355 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:29:07,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2104533229] [2023-11-28 23:29:07,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:07,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:07,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:29:07,357 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:29:07,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 23:29:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:29:07,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:29:07,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:29:07,518 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-28 23:29:07,518 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:29:07,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:29:07,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299785505] [2023-11-28 23:29:07,518 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:29:07,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104533229] [2023-11-28 23:29:07,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104533229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:29:07,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:29:07,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:29:07,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455127901] [2023-11-28 23:29:07,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:29:07,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:29:07,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:29:07,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:29:07,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:29:07,521 INFO L87 Difference]: Start difference. First operand 84 states and 116 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:07,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:29:07,566 INFO L93 Difference]: Finished difference Result 196 states and 271 transitions. [2023-11-28 23:29:07,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:29:07,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 106 [2023-11-28 23:29:07,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:29:07,568 INFO L225 Difference]: With dead ends: 196 [2023-11-28 23:29:07,568 INFO L226 Difference]: Without dead ends: 113 [2023-11-28 23:29:07,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:29:07,570 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 55 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:29:07,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 330 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:29:07,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-11-28 23:29:07,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 86. [2023-11-28 23:29:07,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 70 states have internal predecessors, (90), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-28 23:29:07,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 118 transitions. [2023-11-28 23:29:07,579 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 118 transitions. Word has length 106 [2023-11-28 23:29:07,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:29:07,580 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 118 transitions. [2023-11-28 23:29:07,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:07,580 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 118 transitions. [2023-11-28 23:29:07,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-28 23:29:07,581 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:29:07,582 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:29:07,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-28 23:29:07,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:07,782 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:29:07,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:29:07,782 INFO L85 PathProgramCache]: Analyzing trace with hash 259768393, now seen corresponding path program 1 times [2023-11-28 23:29:07,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:29:07,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671110241] [2023-11-28 23:29:07,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:07,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:29:07,807 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:29:07,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825353981] [2023-11-28 23:29:07,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:07,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:07,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:29:07,808 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:29:07,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 23:29:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:29:07,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-28 23:29:07,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:29:08,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-28 23:29:08,037 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 85 proven. 3 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-11-28 23:29:08,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:29:08,215 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 36 proven. 3 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-11-28 23:29:08,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:29:08,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671110241] [2023-11-28 23:29:08,216 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:29:08,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825353981] [2023-11-28 23:29:08,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825353981] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:29:08,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:29:08,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-11-28 23:29:08,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412066624] [2023-11-28 23:29:08,217 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:29:08,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 23:29:08,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:29:08,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 23:29:08,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:29:08,219 INFO L87 Difference]: Start difference. First operand 86 states and 118 transitions. Second operand has 10 states, 8 states have (on average 6.375) internal successors, (51), 10 states have internal predecessors, (51), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-28 23:29:08,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:29:08,774 INFO L93 Difference]: Finished difference Result 204 states and 279 transitions. [2023-11-28 23:29:08,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 23:29:08,775 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.375) internal successors, (51), 10 states have internal predecessors, (51), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 4 states have call successors, (16) Word has length 108 [2023-11-28 23:29:08,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:29:08,776 INFO L225 Difference]: With dead ends: 204 [2023-11-28 23:29:08,777 INFO L226 Difference]: Without dead ends: 119 [2023-11-28 23:29:08,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 204 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:29:08,778 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 138 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:29:08,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 202 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-28 23:29:08,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-11-28 23:29:08,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 114. [2023-11-28 23:29:08,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 85 states have (on average 1.223529411764706) internal successors, (104), 86 states have internal predecessors, (104), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-28 23:29:08,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 156 transitions. [2023-11-28 23:29:08,793 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 156 transitions. Word has length 108 [2023-11-28 23:29:08,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:29:08,794 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 156 transitions. [2023-11-28 23:29:08,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.375) internal successors, (51), 10 states have internal predecessors, (51), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 2 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-28 23:29:08,794 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 156 transitions. [2023-11-28 23:29:08,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-28 23:29:08,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:29:08,796 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:29:08,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-28 23:29:08,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:08,999 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:29:09,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:29:09,000 INFO L85 PathProgramCache]: Analyzing trace with hash -275794160, now seen corresponding path program 1 times [2023-11-28 23:29:09,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:29:09,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887625663] [2023-11-28 23:29:09,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:09,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:29:09,032 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:29:09,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1924254513] [2023-11-28 23:29:09,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:09,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:09,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:29:09,034 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:29:09,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 23:29:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:29:09,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-28 23:29:09,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:29:09,285 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:09,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-11-28 23:29:09,313 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:09,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 49 [2023-11-28 23:29:09,365 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:09,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 56 treesize of output 70 [2023-11-28 23:29:09,471 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:09,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 76 treesize of output 20 [2023-11-28 23:29:09,514 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-11-28 23:29:09,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:29:09,712 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-28 23:29:09,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:29:09,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887625663] [2023-11-28 23:29:09,712 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:29:09,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924254513] [2023-11-28 23:29:09,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924254513] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-28 23:29:09,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:29:09,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 17 [2023-11-28 23:29:09,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710128119] [2023-11-28 23:29:09,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:29:09,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:29:09,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:29:09,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:29:09,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-11-28 23:29:09,716 INFO L87 Difference]: Start difference. First operand 114 states and 156 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:10,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:29:10,347 INFO L93 Difference]: Finished difference Result 230 states and 312 transitions. [2023-11-28 23:29:10,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 23:29:10,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 110 [2023-11-28 23:29:10,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:29:10,350 INFO L225 Difference]: With dead ends: 230 [2023-11-28 23:29:10,350 INFO L226 Difference]: Without dead ends: 141 [2023-11-28 23:29:10,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2023-11-28 23:29:10,352 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 160 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:29:10,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 396 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 23:29:10,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-11-28 23:29:10,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 112. [2023-11-28 23:29:10,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 83 states have (on average 1.216867469879518) internal successors, (101), 84 states have internal predecessors, (101), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-28 23:29:10,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 153 transitions. [2023-11-28 23:29:10,365 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 153 transitions. Word has length 110 [2023-11-28 23:29:10,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:29:10,365 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 153 transitions. [2023-11-28 23:29:10,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:10,366 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 153 transitions. [2023-11-28 23:29:10,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-28 23:29:10,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:29:10,367 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:29:10,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-28 23:29:10,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:10,568 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:29:10,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:29:10,568 INFO L85 PathProgramCache]: Analyzing trace with hash 458880677, now seen corresponding path program 1 times [2023-11-28 23:29:10,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:29:10,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6117503] [2023-11-28 23:29:10,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:10,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:29:10,599 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:29:10,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1809537434] [2023-11-28 23:29:10,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:10,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:10,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:29:10,601 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:29:10,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-28 23:29:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:29:10,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-28 23:29:10,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:29:10,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2023-11-28 23:29:10,791 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:10,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 40 [2023-11-28 23:29:10,881 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-28 23:29:10,881 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:29:10,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:29:10,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6117503] [2023-11-28 23:29:10,881 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:29:10,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809537434] [2023-11-28 23:29:10,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809537434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:29:10,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:29:10,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-28 23:29:10,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41013696] [2023-11-28 23:29:10,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:29:10,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 23:29:10,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:29:10,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 23:29:10,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:29:10,884 INFO L87 Difference]: Start difference. First operand 112 states and 153 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:11,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:29:11,492 INFO L93 Difference]: Finished difference Result 397 states and 531 transitions. [2023-11-28 23:29:11,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-28 23:29:11,492 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 110 [2023-11-28 23:29:11,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:29:11,496 INFO L225 Difference]: With dead ends: 397 [2023-11-28 23:29:11,496 INFO L226 Difference]: Without dead ends: 310 [2023-11-28 23:29:11,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2023-11-28 23:29:11,497 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 384 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:29:11,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 600 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 23:29:11,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-11-28 23:29:11,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 227. [2023-11-28 23:29:11,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 182 states have (on average 1.2417582417582418) internal successors, (226), 185 states have internal predecessors, (226), 40 states have call successors, (40), 4 states have call predecessors, (40), 4 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-28 23:29:11,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 306 transitions. [2023-11-28 23:29:11,520 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 306 transitions. Word has length 110 [2023-11-28 23:29:11,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:29:11,520 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 306 transitions. [2023-11-28 23:29:11,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:11,521 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 306 transitions. [2023-11-28 23:29:11,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-28 23:29:11,522 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:29:11,522 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:29:11,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-28 23:29:11,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:11,727 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:29:11,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:29:11,728 INFO L85 PathProgramCache]: Analyzing trace with hash 422662994, now seen corresponding path program 1 times [2023-11-28 23:29:11,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:29:11,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498744367] [2023-11-28 23:29:11,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:11,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:29:11,756 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:29:11,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1711747360] [2023-11-28 23:29:11,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:11,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:11,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:29:11,758 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:29:11,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-28 23:29:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:29:11,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-28 23:29:11,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:29:11,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-11-28 23:29:11,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2023-11-28 23:29:11,976 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:11,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2023-11-28 23:29:11,998 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:11,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2023-11-28 23:29:12,010 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-28 23:29:12,010 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:29:12,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:29:12,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498744367] [2023-11-28 23:29:12,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:29:12,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711747360] [2023-11-28 23:29:12,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711747360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:29:12,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:29:12,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:29:12,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938208265] [2023-11-28 23:29:12,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:29:12,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:29:12,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:29:12,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:29:12,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:29:12,013 INFO L87 Difference]: Start difference. First operand 227 states and 306 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:12,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:29:12,380 INFO L93 Difference]: Finished difference Result 484 states and 646 transitions. [2023-11-28 23:29:12,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:29:12,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 111 [2023-11-28 23:29:12,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:29:12,384 INFO L225 Difference]: With dead ends: 484 [2023-11-28 23:29:12,384 INFO L226 Difference]: Without dead ends: 282 [2023-11-28 23:29:12,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:29:12,385 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 256 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:29:12,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 159 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 23:29:12,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-11-28 23:29:12,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 278. [2023-11-28 23:29:12,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 226 states have (on average 1.2300884955752212) internal successors, (278), 230 states have internal predecessors, (278), 46 states have call successors, (46), 5 states have call predecessors, (46), 5 states have return successors, (46), 42 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-28 23:29:12,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 370 transitions. [2023-11-28 23:29:12,408 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 370 transitions. Word has length 111 [2023-11-28 23:29:12,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:29:12,409 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 370 transitions. [2023-11-28 23:29:12,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:12,409 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 370 transitions. [2023-11-28 23:29:12,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-28 23:29:12,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:29:12,411 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:29:12,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-28 23:29:12,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:12,612 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:29:12,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:29:12,613 INFO L85 PathProgramCache]: Analyzing trace with hash 606165913, now seen corresponding path program 1 times [2023-11-28 23:29:12,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:29:12,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473561780] [2023-11-28 23:29:12,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:12,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:29:12,641 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:29:12,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1175456595] [2023-11-28 23:29:12,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:12,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:12,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:29:12,643 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:29:12,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-28 23:29:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:29:12,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-28 23:29:12,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:29:12,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-11-28 23:29:12,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-11-28 23:29:12,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-11-28 23:29:12,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-11-28 23:29:13,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-11-28 23:29:13,053 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:13,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 69 [2023-11-28 23:29:13,133 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:13,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 72 treesize of output 78 [2023-11-28 23:29:13,158 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:13,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 66 treesize of output 18 [2023-11-28 23:29:13,175 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 139 proven. 30 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-11-28 23:29:13,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:29:13,383 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 30 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-11-28 23:29:13,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:29:13,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473561780] [2023-11-28 23:29:13,383 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:29:13,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175456595] [2023-11-28 23:29:13,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175456595] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:29:13,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:29:13,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2023-11-28 23:29:13,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13871027] [2023-11-28 23:29:13,384 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:29:13,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-28 23:29:13,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:29:13,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-28 23:29:13,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:29:13,386 INFO L87 Difference]: Start difference. First operand 278 states and 370 transitions. Second operand has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 13 states have internal predecessors, (72), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (25), 3 states have call predecessors, (25), 5 states have call successors, (25) [2023-11-28 23:29:13,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:29:13,947 INFO L93 Difference]: Finished difference Result 447 states and 574 transitions. [2023-11-28 23:29:13,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:29:13,948 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 13 states have internal predecessors, (72), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (25), 3 states have call predecessors, (25), 5 states have call successors, (25) Word has length 113 [2023-11-28 23:29:13,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:29:13,949 INFO L225 Difference]: With dead ends: 447 [2023-11-28 23:29:13,950 INFO L226 Difference]: Without dead ends: 194 [2023-11-28 23:29:13,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2023-11-28 23:29:13,951 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 149 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:29:13,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 181 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 23:29:13,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-28 23:29:13,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 188. [2023-11-28 23:29:13,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 146 states have (on average 1.1643835616438356) internal successors, (170), 148 states have internal predecessors, (170), 32 states have call successors, (32), 9 states have call predecessors, (32), 9 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-28 23:29:13,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 234 transitions. [2023-11-28 23:29:13,972 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 234 transitions. Word has length 113 [2023-11-28 23:29:13,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:29:13,973 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 234 transitions. [2023-11-28 23:29:13,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 13 states have internal predecessors, (72), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (25), 3 states have call predecessors, (25), 5 states have call successors, (25) [2023-11-28 23:29:13,973 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 234 transitions. [2023-11-28 23:29:13,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-28 23:29:13,974 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:29:13,975 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:29:13,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-28 23:29:14,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-28 23:29:14,175 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:29:14,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:29:14,176 INFO L85 PathProgramCache]: Analyzing trace with hash 2116562007, now seen corresponding path program 1 times [2023-11-28 23:29:14,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:29:14,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161977258] [2023-11-28 23:29:14,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:14,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:29:14,202 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:29:14,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1671935316] [2023-11-28 23:29:14,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:14,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:14,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:29:14,204 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:29:14,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-28 23:29:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:29:14,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-28 23:29:14,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:29:14,443 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:14,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 10 [2023-11-28 23:29:14,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-11-28 23:29:14,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-11-28 23:29:14,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-11-28 23:29:14,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-11-28 23:29:14,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-11-28 23:29:14,637 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:14,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 69 [2023-11-28 23:29:14,699 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:14,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 72 treesize of output 78 [2023-11-28 23:29:14,729 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:14,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 76 treesize of output 87 [2023-11-28 23:29:14,787 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:14,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 91 treesize of output 108 [2023-11-28 23:29:14,923 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:14,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 96 treesize of output 24 [2023-11-28 23:29:14,937 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 139 proven. 30 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-11-28 23:29:14,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:29:15,183 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 9 proven. 30 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-11-28 23:29:15,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:29:15,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161977258] [2023-11-28 23:29:15,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:29:15,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671935316] [2023-11-28 23:29:15,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671935316] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:29:15,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:29:15,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2023-11-28 23:29:15,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559784952] [2023-11-28 23:29:15,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:29:15,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-28 23:29:15,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:29:15,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-28 23:29:15,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:29:15,186 INFO L87 Difference]: Start difference. First operand 188 states and 234 transitions. Second operand has 15 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 15 states have internal predecessors, (82), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (25), 3 states have call predecessors, (25), 5 states have call successors, (25) [2023-11-28 23:29:15,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:29:15,791 INFO L93 Difference]: Finished difference Result 333 states and 405 transitions. [2023-11-28 23:29:15,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-28 23:29:15,792 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 15 states have internal predecessors, (82), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (25), 3 states have call predecessors, (25), 5 states have call successors, (25) Word has length 114 [2023-11-28 23:29:15,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:29:15,794 INFO L225 Difference]: With dead ends: 333 [2023-11-28 23:29:15,794 INFO L226 Difference]: Without dead ends: 174 [2023-11-28 23:29:15,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=428, Unknown=0, NotChecked=0, Total=600 [2023-11-28 23:29:15,796 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 235 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:29:15,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 171 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 23:29:15,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-11-28 23:29:15,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 166. [2023-11-28 23:29:15,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 124 states have (on average 1.1129032258064515) internal successors, (138), 126 states have internal predecessors, (138), 32 states have call successors, (32), 9 states have call predecessors, (32), 9 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-28 23:29:15,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 202 transitions. [2023-11-28 23:29:15,815 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 202 transitions. Word has length 114 [2023-11-28 23:29:15,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:29:15,816 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 202 transitions. [2023-11-28 23:29:15,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 15 states have internal predecessors, (82), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (25), 3 states have call predecessors, (25), 5 states have call successors, (25) [2023-11-28 23:29:15,816 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 202 transitions. [2023-11-28 23:29:15,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-28 23:29:15,817 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:29:15,817 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:29:15,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-28 23:29:16,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-28 23:29:16,018 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:29:16,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:29:16,019 INFO L85 PathProgramCache]: Analyzing trace with hash -2085892384, now seen corresponding path program 1 times [2023-11-28 23:29:16,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:29:16,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943313934] [2023-11-28 23:29:16,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:16,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:29:16,041 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:29:16,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1778169676] [2023-11-28 23:29:16,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:16,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:16,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:29:16,042 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:29:16,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-28 23:29:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:29:16,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-28 23:29:16,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:29:16,300 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:16,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 55 [2023-11-28 23:29:16,340 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:16,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 61 treesize of output 64 [2023-11-28 23:29:16,363 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:16,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 65 treesize of output 73 [2023-11-28 23:29:16,403 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:16,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 80 treesize of output 94 [2023-11-28 23:29:16,669 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:16,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 121 treesize of output 37 [2023-11-28 23:29:16,690 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-11-28 23:29:16,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:29:16,818 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-28 23:29:16,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:29:16,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943313934] [2023-11-28 23:29:16,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:29:16,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778169676] [2023-11-28 23:29:16,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778169676] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-28 23:29:16,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:29:16,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2023-11-28 23:29:16,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17815937] [2023-11-28 23:29:16,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:29:16,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:29:16,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:29:16,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:29:16,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:29:16,820 INFO L87 Difference]: Start difference. First operand 166 states and 202 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:16,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:29:16,988 INFO L93 Difference]: Finished difference Result 176 states and 212 transitions. [2023-11-28 23:29:16,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:29:16,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 114 [2023-11-28 23:29:16,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:29:16,990 INFO L225 Difference]: With dead ends: 176 [2023-11-28 23:29:16,990 INFO L226 Difference]: Without dead ends: 174 [2023-11-28 23:29:16,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:29:16,991 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 45 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:29:16,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 273 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:29:16,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-11-28 23:29:17,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2023-11-28 23:29:17,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 131 states have (on average 1.1068702290076335) internal successors, (145), 133 states have internal predecessors, (145), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-28 23:29:17,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 209 transitions. [2023-11-28 23:29:17,012 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 209 transitions. Word has length 114 [2023-11-28 23:29:17,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:29:17,012 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 209 transitions. [2023-11-28 23:29:17,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:17,013 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 209 transitions. [2023-11-28 23:29:17,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-28 23:29:17,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:29:17,014 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:29:17,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-28 23:29:17,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-28 23:29:17,221 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:29:17,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:29:17,221 INFO L85 PathProgramCache]: Analyzing trace with hash -2085832802, now seen corresponding path program 1 times [2023-11-28 23:29:17,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:29:17,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287645670] [2023-11-28 23:29:17,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:17,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:29:17,242 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:29:17,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1703652826] [2023-11-28 23:29:17,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:17,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:17,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:29:17,244 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:29:17,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-28 23:29:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:29:17,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-28 23:29:17,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:29:17,483 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:17,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 13 [2023-11-28 23:29:17,526 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:17,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 60 [2023-11-28 23:29:17,576 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:17,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 72 treesize of output 69 [2023-11-28 23:29:17,607 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:17,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 76 treesize of output 78 [2023-11-28 23:29:17,656 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:17,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 91 treesize of output 99 [2023-11-28 23:29:18,043 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:18,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 144 treesize of output 48 [2023-11-28 23:29:18,070 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-11-28 23:29:18,070 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:29:18,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:29:18,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287645670] [2023-11-28 23:29:18,070 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:29:18,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703652826] [2023-11-28 23:29:18,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703652826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:29:18,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:29:18,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-28 23:29:18,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041883047] [2023-11-28 23:29:18,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:29:18,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-28 23:29:18,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:29:18,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-28 23:29:18,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-28 23:29:18,072 INFO L87 Difference]: Start difference. First operand 174 states and 209 transitions. Second operand has 13 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-28 23:29:18,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:29:18,955 INFO L93 Difference]: Finished difference Result 336 states and 392 transitions. [2023-11-28 23:29:18,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-28 23:29:18,956 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 114 [2023-11-28 23:29:18,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:29:18,957 INFO L225 Difference]: With dead ends: 336 [2023-11-28 23:29:18,957 INFO L226 Difference]: Without dead ends: 191 [2023-11-28 23:29:18,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=639, Unknown=0, NotChecked=0, Total=812 [2023-11-28 23:29:18,958 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 155 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-28 23:29:18,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 209 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-28 23:29:18,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-11-28 23:29:18,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 182. [2023-11-28 23:29:18,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 137 states have (on average 1.0875912408759123) internal successors, (149), 139 states have internal predecessors, (149), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-28 23:29:18,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 213 transitions. [2023-11-28 23:29:18,975 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 213 transitions. Word has length 114 [2023-11-28 23:29:18,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:29:18,976 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 213 transitions. [2023-11-28 23:29:18,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 2 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-28 23:29:18,976 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 213 transitions. [2023-11-28 23:29:18,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-28 23:29:18,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:29:18,977 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:29:18,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-28 23:29:19,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-28 23:29:19,177 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:29:19,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:29:19,178 INFO L85 PathProgramCache]: Analyzing trace with hash -2028574500, now seen corresponding path program 1 times [2023-11-28 23:29:19,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:29:19,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521739920] [2023-11-28 23:29:19,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:19,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:29:19,204 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:29:19,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [445164860] [2023-11-28 23:29:19,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:19,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:19,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:29:19,205 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:29:19,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-28 23:29:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:29:19,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-28 23:29:19,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:29:19,413 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:19,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 55 [2023-11-28 23:29:19,450 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:19,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 61 treesize of output 64 [2023-11-28 23:29:19,474 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:19,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 65 treesize of output 73 [2023-11-28 23:29:19,513 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:19,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 80 treesize of output 94 [2023-11-28 23:29:19,721 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:19,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 113 treesize of output 29 [2023-11-28 23:29:19,735 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-28 23:29:19,735 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:29:19,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:29:19,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521739920] [2023-11-28 23:29:19,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:29:19,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445164860] [2023-11-28 23:29:19,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445164860] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:29:19,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:29:19,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:29:19,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591738291] [2023-11-28 23:29:19,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:29:19,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:29:19,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:29:19,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:29:19,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:29:19,738 INFO L87 Difference]: Start difference. First operand 182 states and 213 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:20,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:29:20,069 INFO L93 Difference]: Finished difference Result 334 states and 385 transitions. [2023-11-28 23:29:20,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:29:20,070 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 114 [2023-11-28 23:29:20,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:29:20,071 INFO L225 Difference]: With dead ends: 334 [2023-11-28 23:29:20,071 INFO L226 Difference]: Without dead ends: 185 [2023-11-28 23:29:20,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:29:20,073 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 148 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:29:20,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 308 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:29:20,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-28 23:29:20,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 182. [2023-11-28 23:29:20,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 137 states have (on average 1.072992700729927) internal successors, (147), 139 states have internal predecessors, (147), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-28 23:29:20,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 211 transitions. [2023-11-28 23:29:20,107 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 211 transitions. Word has length 114 [2023-11-28 23:29:20,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:29:20,108 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 211 transitions. [2023-11-28 23:29:20,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:20,108 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 211 transitions. [2023-11-28 23:29:20,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-28 23:29:20,109 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:29:20,109 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:29:20,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-28 23:29:20,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-28 23:29:20,310 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:29:20,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:29:20,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1457046170, now seen corresponding path program 1 times [2023-11-28 23:29:20,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:29:20,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931385664] [2023-11-28 23:29:20,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:20,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:29:20,334 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:29:20,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [957096419] [2023-11-28 23:29:20,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:20,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:20,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:29:20,335 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:29:20,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-28 23:29:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:29:20,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-28 23:29:20,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:29:20,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2023-11-28 23:29:20,550 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-11-28 23:29:20,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:29:20,613 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-28 23:29:20,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:29:20,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931385664] [2023-11-28 23:29:20,613 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:29:20,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957096419] [2023-11-28 23:29:20,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957096419] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-28 23:29:20,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:29:20,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 9 [2023-11-28 23:29:20,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765373360] [2023-11-28 23:29:20,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:29:20,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:29:20,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:29:20,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:29:20,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:29:20,615 INFO L87 Difference]: Start difference. First operand 182 states and 211 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:20,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:29:20,793 INFO L93 Difference]: Finished difference Result 342 states and 390 transitions. [2023-11-28 23:29:20,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:29:20,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 114 [2023-11-28 23:29:20,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:29:20,796 INFO L225 Difference]: With dead ends: 342 [2023-11-28 23:29:20,796 INFO L226 Difference]: Without dead ends: 193 [2023-11-28 23:29:20,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:29:20,797 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 69 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:29:20,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 405 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:29:20,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-28 23:29:20,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 185. [2023-11-28 23:29:20,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 140 states have (on average 1.0714285714285714) internal successors, (150), 142 states have internal predecessors, (150), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-28 23:29:20,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 214 transitions. [2023-11-28 23:29:20,822 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 214 transitions. Word has length 114 [2023-11-28 23:29:20,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:29:20,823 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 214 transitions. [2023-11-28 23:29:20,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:20,823 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 214 transitions. [2023-11-28 23:29:20,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-28 23:29:20,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:29:20,824 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:29:20,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-28 23:29:21,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-28 23:29:21,025 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:29:21,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:29:21,025 INFO L85 PathProgramCache]: Analyzing trace with hash 827232224, now seen corresponding path program 1 times [2023-11-28 23:29:21,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:29:21,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917688969] [2023-11-28 23:29:21,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:21,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:29:21,048 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:29:21,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2023230761] [2023-11-28 23:29:21,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:21,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:21,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:29:21,050 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:29:21,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-28 23:29:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:29:21,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-28 23:29:21,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:29:21,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-28 23:29:21,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2023-11-28 23:29:21,416 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:21,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 49 [2023-11-28 23:29:21,487 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:21,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 19 [2023-11-28 23:29:21,499 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-28 23:29:21,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:29:21,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:29:21,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917688969] [2023-11-28 23:29:21,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:29:21,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023230761] [2023-11-28 23:29:21,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023230761] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:29:21,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:29:21,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:29:21,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181161520] [2023-11-28 23:29:21,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:29:21,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:29:21,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:29:21,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:29:21,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:29:21,501 INFO L87 Difference]: Start difference. First operand 185 states and 214 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:21,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:29:21,794 INFO L93 Difference]: Finished difference Result 374 states and 425 transitions. [2023-11-28 23:29:21,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:29:21,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 115 [2023-11-28 23:29:21,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:29:21,796 INFO L225 Difference]: With dead ends: 374 [2023-11-28 23:29:21,796 INFO L226 Difference]: Without dead ends: 222 [2023-11-28 23:29:21,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:29:21,797 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 86 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:29:21,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 285 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:29:21,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-11-28 23:29:21,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 196. [2023-11-28 23:29:21,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 151 states have (on average 1.0596026490066226) internal successors, (160), 153 states have internal predecessors, (160), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-28 23:29:21,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 224 transitions. [2023-11-28 23:29:21,821 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 224 transitions. Word has length 115 [2023-11-28 23:29:21,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:29:21,821 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 224 transitions. [2023-11-28 23:29:21,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:21,821 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 224 transitions. [2023-11-28 23:29:21,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-28 23:29:21,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:29:21,823 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:29:21,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-28 23:29:22,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-28 23:29:22,023 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:29:22,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:29:22,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1094044043, now seen corresponding path program 1 times [2023-11-28 23:29:22,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:29:22,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186934756] [2023-11-28 23:29:22,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:22,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:29:22,046 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:29:22,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630829419] [2023-11-28 23:29:22,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:22,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:22,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:29:22,047 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:29:22,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-28 23:29:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:29:22,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-28 23:29:22,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:29:22,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-28 23:29:22,485 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:22,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 48 [2023-11-28 23:29:22,560 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:22,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 21 [2023-11-28 23:29:22,571 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-28 23:29:22,571 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:29:22,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:29:22,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186934756] [2023-11-28 23:29:22,571 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:29:22,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630829419] [2023-11-28 23:29:22,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630829419] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:29:22,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:29:22,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:29:22,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648701941] [2023-11-28 23:29:22,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:29:22,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:29:22,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:29:22,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:29:22,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:29:22,573 INFO L87 Difference]: Start difference. First operand 196 states and 224 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:22,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:29:22,736 INFO L93 Difference]: Finished difference Result 367 states and 413 transitions. [2023-11-28 23:29:22,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:29:22,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 116 [2023-11-28 23:29:22,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:29:22,738 INFO L225 Difference]: With dead ends: 367 [2023-11-28 23:29:22,738 INFO L226 Difference]: Without dead ends: 204 [2023-11-28 23:29:22,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:29:22,739 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 20 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:29:22,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 238 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:29:22,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-28 23:29:22,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 196. [2023-11-28 23:29:22,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 151 states have (on average 1.0529801324503312) internal successors, (159), 153 states have internal predecessors, (159), 32 states have call successors, (32), 12 states have call predecessors, (32), 12 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-28 23:29:22,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 223 transitions. [2023-11-28 23:29:22,763 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 223 transitions. Word has length 116 [2023-11-28 23:29:22,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:29:22,764 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 223 transitions. [2023-11-28 23:29:22,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:22,764 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 223 transitions. [2023-11-28 23:29:22,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-28 23:29:22,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:29:22,765 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:29:22,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-28 23:29:22,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-28 23:29:22,966 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:29:22,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:29:22,966 INFO L85 PathProgramCache]: Analyzing trace with hash -754857413, now seen corresponding path program 1 times [2023-11-28 23:29:22,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:29:22,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961570338] [2023-11-28 23:29:22,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:22,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:29:22,987 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:29:22,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [624425060] [2023-11-28 23:29:22,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:22,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:22,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:29:22,988 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:29:22,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-28 23:29:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:29:23,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-28 23:29:23,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:29:23,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2023-11-28 23:29:23,179 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:23,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 42 [2023-11-28 23:29:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-11-28 23:29:23,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:29:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-28 23:29:23,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:29:23,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961570338] [2023-11-28 23:29:23,498 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:29:23,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624425060] [2023-11-28 23:29:23,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624425060] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-28 23:29:23,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:29:23,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 20 [2023-11-28 23:29:23,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140320042] [2023-11-28 23:29:23,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:29:23,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-28 23:29:23,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:29:23,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-28 23:29:23,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-11-28 23:29:23,501 INFO L87 Difference]: Start difference. First operand 196 states and 223 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:23,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:29:23,899 INFO L93 Difference]: Finished difference Result 383 states and 427 transitions. [2023-11-28 23:29:23,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:29:23,899 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 117 [2023-11-28 23:29:23,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:29:23,901 INFO L225 Difference]: With dead ends: 383 [2023-11-28 23:29:23,901 INFO L226 Difference]: Without dead ends: 220 [2023-11-28 23:29:23,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2023-11-28 23:29:23,902 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 182 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:29:23,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 609 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 23:29:23,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-11-28 23:29:23,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 212. [2023-11-28 23:29:23,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 163 states have (on average 1.049079754601227) internal successors, (171), 165 states have internal predecessors, (171), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-28 23:29:23,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 239 transitions. [2023-11-28 23:29:23,930 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 239 transitions. Word has length 117 [2023-11-28 23:29:23,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:29:23,930 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 239 transitions. [2023-11-28 23:29:23,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:23,931 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 239 transitions. [2023-11-28 23:29:23,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-28 23:29:23,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:29:23,932 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:29:23,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-28 23:29:24,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-28 23:29:24,132 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:29:24,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:29:24,133 INFO L85 PathProgramCache]: Analyzing trace with hash -496691975, now seen corresponding path program 1 times [2023-11-28 23:29:24,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:29:24,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989481148] [2023-11-28 23:29:24,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:24,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:29:24,155 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:29:24,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [978640421] [2023-11-28 23:29:24,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:24,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:24,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:29:24,157 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:29:24,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-28 23:29:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:29:24,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-28 23:29:24,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:29:24,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2023-11-28 23:29:24,640 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:24,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 62 [2023-11-28 23:29:24,847 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:24,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 104 treesize of output 32 [2023-11-28 23:29:24,866 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-28 23:29:24,866 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:29:24,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:29:24,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989481148] [2023-11-28 23:29:24,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:29:24,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978640421] [2023-11-28 23:29:24,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978640421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:29:24,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:29:24,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-28 23:29:24,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751782326] [2023-11-28 23:29:24,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:29:24,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 23:29:24,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:29:24,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 23:29:24,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:29:24,868 INFO L87 Difference]: Start difference. First operand 212 states and 239 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:25,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:29:25,693 INFO L93 Difference]: Finished difference Result 392 states and 436 transitions. [2023-11-28 23:29:25,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 23:29:25,694 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 117 [2023-11-28 23:29:25,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:29:25,695 INFO L225 Difference]: With dead ends: 392 [2023-11-28 23:29:25,695 INFO L226 Difference]: Without dead ends: 217 [2023-11-28 23:29:25,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:29:25,697 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 136 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:29:25,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 382 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-28 23:29:25,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-11-28 23:29:25,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 202. [2023-11-28 23:29:25,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 153 states have (on average 1.0326797385620916) internal successors, (158), 155 states have internal predecessors, (158), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-28 23:29:25,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 226 transitions. [2023-11-28 23:29:25,726 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 226 transitions. Word has length 117 [2023-11-28 23:29:25,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:29:25,726 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 226 transitions. [2023-11-28 23:29:25,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:25,726 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 226 transitions. [2023-11-28 23:29:25,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-28 23:29:25,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:29:25,728 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:29:25,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-28 23:29:25,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:25,928 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:29:25,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:29:25,929 INFO L85 PathProgramCache]: Analyzing trace with hash -888870919, now seen corresponding path program 1 times [2023-11-28 23:29:25,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:29:25,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563880418] [2023-11-28 23:29:25,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:25,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:29:25,950 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:29:25,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [239511289] [2023-11-28 23:29:25,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:25,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:25,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:29:25,951 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:29:25,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-28 23:29:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:29:26,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-28 23:29:26,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:29:26,344 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:26,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 10 [2023-11-28 23:29:26,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-28 23:29:26,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:26,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 55 [2023-11-28 23:29:26,395 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:26,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 61 treesize of output 64 [2023-11-28 23:29:26,411 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:26,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 65 treesize of output 73 [2023-11-28 23:29:26,474 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:26,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 111 treesize of output 89 [2023-11-28 23:29:26,635 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:29:26,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 119 treesize of output 35 [2023-11-28 23:29:26,652 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-28 23:29:26,652 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:29:26,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:29:26,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563880418] [2023-11-28 23:29:26,652 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:29:26,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239511289] [2023-11-28 23:29:26,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239511289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:29:26,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:29:26,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:29:26,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185056448] [2023-11-28 23:29:26,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:29:26,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:29:26,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:29:26,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:29:26,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:29:26,654 INFO L87 Difference]: Start difference. First operand 202 states and 226 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:28,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:29:28,246 INFO L93 Difference]: Finished difference Result 407 states and 450 transitions. [2023-11-28 23:29:28,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:29:28,247 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 117 [2023-11-28 23:29:28,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:29:28,248 INFO L225 Difference]: With dead ends: 407 [2023-11-28 23:29:28,248 INFO L226 Difference]: Without dead ends: 242 [2023-11-28 23:29:28,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:29:28,250 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 106 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:29:28,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 319 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-28 23:29:28,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-11-28 23:29:28,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 202. [2023-11-28 23:29:28,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 153 states have (on average 1.026143790849673) internal successors, (157), 155 states have internal predecessors, (157), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-28 23:29:28,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 225 transitions. [2023-11-28 23:29:28,283 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 225 transitions. Word has length 117 [2023-11-28 23:29:28,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:29:28,283 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 225 transitions. [2023-11-28 23:29:28,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:28,283 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 225 transitions. [2023-11-28 23:29:28,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-28 23:29:28,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:29:28,284 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:29:28,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-28 23:29:28,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:28,484 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:29:28,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:29:28,485 INFO L85 PathProgramCache]: Analyzing trace with hash -630705481, now seen corresponding path program 1 times [2023-11-28 23:29:28,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:29:28,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926237350] [2023-11-28 23:29:28,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:28,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:29:28,510 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:29:28,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1595311949] [2023-11-28 23:29:28,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:29:28,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:28,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:29:28,511 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:29:28,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-28 23:29:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:29:28,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-28 23:29:28,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:29:28,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2023-11-28 23:29:28,775 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-11-28 23:29:28,775 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:29:28,848 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-28 23:29:28,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:29:28,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926237350] [2023-11-28 23:29:28,849 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:29:28,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595311949] [2023-11-28 23:29:28,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595311949] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-28 23:29:28,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:29:28,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 11 [2023-11-28 23:29:28,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177800024] [2023-11-28 23:29:28,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:29:28,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:29:28,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:29:28,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:29:28,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:29:28,851 INFO L87 Difference]: Start difference. First operand 202 states and 225 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:29,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:29:29,080 INFO L93 Difference]: Finished difference Result 364 states and 401 transitions. [2023-11-28 23:29:29,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 23:29:29,080 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 117 [2023-11-28 23:29:29,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:29:29,081 INFO L225 Difference]: With dead ends: 364 [2023-11-28 23:29:29,081 INFO L226 Difference]: Without dead ends: 0 [2023-11-28 23:29:29,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-11-28 23:29:29,082 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 57 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:29:29,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 444 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:29:29,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-28 23:29:29,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-28 23:29:29,083 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) [2023-11-28 23:29:29,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-28 23:29:29,084 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 117 [2023-11-28 23:29:29,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:29:29,084 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-28 23:29:29,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 23:29:29,084 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-28 23:29:29,084 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-28 23:29:29,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-28 23:29:29,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-28 23:29:29,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:29:29,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-28 23:29:32,096 INFO L895 garLoopResultBuilder]: At program point L93(line 93) the Hoare annotation is: (let ((.cse0 (select |#memory_int#1| |~#WrapperStruct00~0.base|))) (let ((.cse3 (select .cse0 (+ |~#WrapperStruct00~0.offset| 26)))) (let ((.cse6 (select .cse0 (+ |~#WrapperStruct00~0.offset| 16))) (.cse1 (select .cse0 (+ |~#WrapperStruct00~0.offset| 17))) (.cse7 (select .cse0 (+ |~#WrapperStruct00~0.offset| 15))) (.cse5 (<= (mod (select .cse0 (+ |~#WrapperStruct00~0.offset| 8)) 4294967296) 2147483647)) (.cse4 (select .cse0 (+ |~#WrapperStruct00~0.offset| 25))) (.cse2 (mod .cse3 256))) (or (and (= (select .cse0 (+ |~#WrapperStruct00~0.offset| 14)) .cse1) (= .cse2 1) (= .cse3 .cse4) .cse5 (= .cse6 (select .cse0 (+ |~#WrapperStruct00~0.offset| 27))) (= (select .cse0 (+ |~#WrapperStruct00~0.offset| 21)) .cse7)) (and (or (= (+ .cse6 .cse1) .cse7) (not (= .cse7 (select .cse0 (+ |~#WrapperStruct00~0.offset| 12))))) .cse5 (not (= (mod .cse4 256) 0)) (<= .cse2 1)))))) [2023-11-28 23:29:32,096 INFO L899 garLoopResultBuilder]: For program point L93-1(line 93) no Hoare annotation was computed. [2023-11-28 23:29:32,097 INFO L899 garLoopResultBuilder]: For program point L60(lines 60 62) no Hoare annotation was computed. [2023-11-28 23:29:32,097 INFO L899 garLoopResultBuilder]: For program point L60-2(lines 60 62) no Hoare annotation was computed. [2023-11-28 23:29:32,097 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-11-28 23:29:32,097 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-11-28 23:29:32,097 INFO L899 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2023-11-28 23:29:32,097 INFO L895 garLoopResultBuilder]: At program point L102(line 102) the Hoare annotation is: (let ((.cse0 (select |#memory_int#1| |~#WrapperStruct00~0.base|))) (and (<= (mod (select .cse0 (+ |~#WrapperStruct00~0.offset| 8)) 4294967296) 2147483647) (not (= (mod (select .cse0 (+ |~#WrapperStruct00~0.offset| 25)) 256) 0)) (<= (mod (select .cse0 (+ |~#WrapperStruct00~0.offset| 26)) 256) 1))) [2023-11-28 23:29:32,097 INFO L899 garLoopResultBuilder]: For program point L102-1(line 102) no Hoare annotation was computed. [2023-11-28 23:29:32,097 INFO L899 garLoopResultBuilder]: For program point L61(line 61) no Hoare annotation was computed. [2023-11-28 23:29:32,097 INFO L899 garLoopResultBuilder]: For program point L61-2(line 61) no Hoare annotation was computed. [2023-11-28 23:29:32,098 INFO L895 garLoopResultBuilder]: At program point L86(line 86) the Hoare annotation is: (let ((.cse0 (select |#memory_int#1| |~#WrapperStruct00~0.base|))) (let ((.cse3 (select .cse0 (+ |~#WrapperStruct00~0.offset| 26)))) (let ((.cse6 (select .cse0 (+ |~#WrapperStruct00~0.offset| 16))) (.cse1 (select .cse0 (+ |~#WrapperStruct00~0.offset| 17))) (.cse7 (select .cse0 (+ |~#WrapperStruct00~0.offset| 15))) (.cse5 (<= (mod (select .cse0 (+ |~#WrapperStruct00~0.offset| 8)) 4294967296) 2147483647)) (.cse4 (select .cse0 (+ |~#WrapperStruct00~0.offset| 25))) (.cse2 (mod .cse3 256))) (or (and (= (select .cse0 (+ |~#WrapperStruct00~0.offset| 14)) .cse1) (= .cse2 1) (= .cse3 .cse4) .cse5 (= .cse6 (select .cse0 (+ |~#WrapperStruct00~0.offset| 27))) (= (select .cse0 (+ |~#WrapperStruct00~0.offset| 21)) .cse7)) (and (or (= (+ .cse6 .cse1) .cse7) (not (= .cse7 (select .cse0 (+ |~#WrapperStruct00~0.offset| 12))))) .cse5 (not (= (mod .cse4 256) 0)) (<= .cse2 1)))))) [2023-11-28 23:29:32,098 INFO L899 garLoopResultBuilder]: For program point L86-1(line 86) no Hoare annotation was computed. [2023-11-28 23:29:32,098 INFO L899 garLoopResultBuilder]: For program point L111(line 111) no Hoare annotation was computed. [2023-11-28 23:29:32,098 INFO L899 garLoopResultBuilder]: For program point L111-1(line 111) no Hoare annotation was computed. [2023-11-28 23:29:32,098 INFO L899 garLoopResultBuilder]: For program point L111-3(line 111) no Hoare annotation was computed. [2023-11-28 23:29:32,098 INFO L899 garLoopResultBuilder]: For program point L111-5(line 111) no Hoare annotation was computed. [2023-11-28 23:29:32,098 INFO L899 garLoopResultBuilder]: For program point L111-6(line 111) no Hoare annotation was computed. [2023-11-28 23:29:32,098 INFO L899 garLoopResultBuilder]: For program point L111-7(line 111) no Hoare annotation was computed. [2023-11-28 23:29:32,099 INFO L899 garLoopResultBuilder]: For program point L111-8(line 111) no Hoare annotation was computed. [2023-11-28 23:29:32,099 INFO L899 garLoopResultBuilder]: For program point L111-9(line 111) no Hoare annotation was computed. [2023-11-28 23:29:32,099 INFO L899 garLoopResultBuilder]: For program point L111-11(line 111) no Hoare annotation was computed. [2023-11-28 23:29:32,099 INFO L899 garLoopResultBuilder]: For program point L111-12(line 111) no Hoare annotation was computed. [2023-11-28 23:29:32,099 INFO L899 garLoopResultBuilder]: For program point L111-14(line 111) no Hoare annotation was computed. [2023-11-28 23:29:32,099 INFO L895 garLoopResultBuilder]: At program point L95(line 95) the Hoare annotation is: (let ((.cse5 (select |#memory_int#1| |~#WrapperStruct00~0.base|))) (let ((.cse1 (select .cse5 (+ |~#WrapperStruct00~0.offset| 26)))) (let ((.cse4 (select .cse5 (+ |~#WrapperStruct00~0.offset| 16))) (.cse6 (select .cse5 (+ |~#WrapperStruct00~0.offset| 15))) (.cse3 (<= (mod (select .cse5 (+ |~#WrapperStruct00~0.offset| 8)) 4294967296) 2147483647)) (.cse2 (select .cse5 (+ |~#WrapperStruct00~0.offset| 25))) (.cse0 (mod .cse1 256))) (or (and (= .cse0 1) (= .cse1 .cse2) .cse3 (= .cse4 (select .cse5 (+ |~#WrapperStruct00~0.offset| 27))) (= (select .cse5 (+ |~#WrapperStruct00~0.offset| 21)) .cse6)) (and (or (= (+ .cse4 (select .cse5 (+ |~#WrapperStruct00~0.offset| 17))) .cse6) (not (= .cse6 (select .cse5 (+ |~#WrapperStruct00~0.offset| 12))))) .cse3 (not (= (mod .cse2 256) 0)) (<= .cse0 1)))))) [2023-11-28 23:29:32,099 INFO L899 garLoopResultBuilder]: For program point L111-16(line 111) no Hoare annotation was computed. [2023-11-28 23:29:32,099 INFO L899 garLoopResultBuilder]: For program point L95-1(line 95) no Hoare annotation was computed. [2023-11-28 23:29:32,099 INFO L899 garLoopResultBuilder]: For program point L111-18(line 111) no Hoare annotation was computed. [2023-11-28 23:29:32,099 INFO L899 garLoopResultBuilder]: For program point L111-20(line 111) no Hoare annotation was computed. [2023-11-28 23:29:32,099 INFO L899 garLoopResultBuilder]: For program point L111-21(line 111) no Hoare annotation was computed. [2023-11-28 23:29:32,100 INFO L899 garLoopResultBuilder]: For program point L111-22(line 111) no Hoare annotation was computed. [2023-11-28 23:29:32,100 INFO L899 garLoopResultBuilder]: For program point L111-23(line 111) no Hoare annotation was computed. [2023-11-28 23:29:32,100 INFO L895 garLoopResultBuilder]: At program point L87(line 87) the Hoare annotation is: (let ((.cse0 (select |#memory_int#1| |~#WrapperStruct00~0.base|))) (let ((.cse3 (select .cse0 (+ |~#WrapperStruct00~0.offset| 26)))) (let ((.cse6 (select .cse0 (+ |~#WrapperStruct00~0.offset| 16))) (.cse1 (select .cse0 (+ |~#WrapperStruct00~0.offset| 17))) (.cse7 (select .cse0 (+ |~#WrapperStruct00~0.offset| 15))) (.cse5 (<= (mod (select .cse0 (+ |~#WrapperStruct00~0.offset| 8)) 4294967296) 2147483647)) (.cse4 (select .cse0 (+ |~#WrapperStruct00~0.offset| 25))) (.cse2 (mod .cse3 256))) (or (and (= (select .cse0 (+ |~#WrapperStruct00~0.offset| 14)) .cse1) (= .cse2 1) (= .cse3 .cse4) .cse5 (= .cse6 (select .cse0 (+ |~#WrapperStruct00~0.offset| 27))) (= (select .cse0 (+ |~#WrapperStruct00~0.offset| 21)) .cse7)) (and (or (= (+ .cse6 .cse1) .cse7) (not (= .cse7 (select .cse0 (+ |~#WrapperStruct00~0.offset| 12))))) .cse5 (not (= (mod .cse4 256) 0)) (<= .cse2 1)))))) [2023-11-28 23:29:32,100 INFO L899 garLoopResultBuilder]: For program point L87-1(line 87) no Hoare annotation was computed. [2023-11-28 23:29:32,100 INFO L899 garLoopResultBuilder]: For program point L111-25(line 111) no Hoare annotation was computed. [2023-11-28 23:29:32,100 INFO L899 garLoopResultBuilder]: For program point L111-27(line 111) no Hoare annotation was computed. [2023-11-28 23:29:32,100 INFO L899 garLoopResultBuilder]: For program point L111-29(line 111) no Hoare annotation was computed. [2023-11-28 23:29:32,100 INFO L899 garLoopResultBuilder]: For program point L111-30(line 111) no Hoare annotation was computed. [2023-11-28 23:29:32,100 INFO L899 garLoopResultBuilder]: For program point L111-32(line 111) no Hoare annotation was computed. [2023-11-28 23:29:32,100 INFO L899 garLoopResultBuilder]: For program point L111-33(line 111) no Hoare annotation was computed. [2023-11-28 23:29:32,100 INFO L899 garLoopResultBuilder]: For program point L111-35(line 111) no Hoare annotation was computed. [2023-11-28 23:29:32,100 INFO L899 garLoopResultBuilder]: For program point L111-36(line 111) no Hoare annotation was computed. [2023-11-28 23:29:32,100 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-28 23:29:32,100 INFO L899 garLoopResultBuilder]: For program point L111-38(line 111) no Hoare annotation was computed. [2023-11-28 23:29:32,101 INFO L895 garLoopResultBuilder]: At program point L104(line 104) the Hoare annotation is: (let ((.cse0 (select |#memory_int#1| |~#WrapperStruct00~0.base|))) (and (= (select .cse0 (+ |~#WrapperStruct00~0.offset| 26)) |ULTIMATE.start_updateVariables_#t~mem57#1|) (<= (mod (select .cse0 (+ |~#WrapperStruct00~0.offset| 8)) 4294967296) 2147483647) (not (= (mod (select .cse0 (+ |~#WrapperStruct00~0.offset| 25)) 256) 0)))) [2023-11-28 23:29:32,101 INFO L899 garLoopResultBuilder]: For program point L104-1(line 104) no Hoare annotation was computed. [2023-11-28 23:29:32,101 INFO L895 garLoopResultBuilder]: At program point L96(line 96) the Hoare annotation is: (let ((.cse5 (select |#memory_int#1| |~#WrapperStruct00~0.base|))) (let ((.cse1 (select .cse5 (+ |~#WrapperStruct00~0.offset| 26)))) (let ((.cse4 (select .cse5 (+ |~#WrapperStruct00~0.offset| 16))) (.cse6 (select .cse5 (+ |~#WrapperStruct00~0.offset| 15))) (.cse3 (<= (mod (select .cse5 (+ |~#WrapperStruct00~0.offset| 8)) 4294967296) 2147483647)) (.cse2 (select .cse5 (+ |~#WrapperStruct00~0.offset| 25))) (.cse0 (mod .cse1 256))) (or (and (= .cse0 1) (= .cse1 .cse2) .cse3 (= .cse4 (select .cse5 (+ |~#WrapperStruct00~0.offset| 27))) (= (select .cse5 (+ |~#WrapperStruct00~0.offset| 21)) .cse6)) (and (or (= (+ .cse4 (select .cse5 (+ |~#WrapperStruct00~0.offset| 17))) .cse6) (not (= .cse6 (select .cse5 (+ |~#WrapperStruct00~0.offset| 12))))) .cse3 (not (= (mod .cse2 256) 0)) (<= .cse0 1)))))) [2023-11-28 23:29:32,101 INFO L899 garLoopResultBuilder]: For program point L96-1(line 96) no Hoare annotation was computed. [2023-11-28 23:29:32,101 INFO L895 garLoopResultBuilder]: At program point L105(line 105) the Hoare annotation is: (let ((.cse1 (select |#memory_int#1| |~#WrapperStruct00~0.base|))) (let ((.cse0 (select .cse1 (+ |~#WrapperStruct00~0.offset| 26)))) (and (<= 1 (mod .cse0 256)) (<= (mod (select .cse1 (+ |~#WrapperStruct00~0.offset| 8)) 4294967296) 2147483647) (= .cse0 |ULTIMATE.start_updateVariables_#t~mem58#1|) (not (= (mod (select .cse1 (+ |~#WrapperStruct00~0.offset| 25)) 256) 0))))) [2023-11-28 23:29:32,101 INFO L899 garLoopResultBuilder]: For program point L105-1(line 105) no Hoare annotation was computed. [2023-11-28 23:29:32,101 INFO L895 garLoopResultBuilder]: At program point L89(line 89) the Hoare annotation is: (let ((.cse0 (select |#memory_int#1| |~#WrapperStruct00~0.base|))) (let ((.cse3 (select .cse0 (+ |~#WrapperStruct00~0.offset| 26)))) (let ((.cse5 (select .cse0 (+ |~#WrapperStruct00~0.offset| 16))) (.cse1 (select .cse0 (+ |~#WrapperStruct00~0.offset| 17))) (.cse6 (select .cse0 (+ |~#WrapperStruct00~0.offset| 15))) (.cse4 (select .cse0 (+ |~#WrapperStruct00~0.offset| 25))) (.cse2 (mod .cse3 256))) (or (and (= (select .cse0 (+ |~#WrapperStruct00~0.offset| 14)) .cse1) (= .cse2 1) (= .cse3 .cse4) (= .cse5 (select .cse0 (+ |~#WrapperStruct00~0.offset| 27))) (= (select .cse0 (+ |~#WrapperStruct00~0.offset| 21)) .cse6)) (and (or (= (+ .cse5 .cse1) .cse6) (not (= .cse6 (select .cse0 (+ |~#WrapperStruct00~0.offset| 12))))) (not (= (mod .cse4 256) 0)) (<= .cse2 1)))))) [2023-11-28 23:29:32,101 INFO L899 garLoopResultBuilder]: For program point L89-1(line 89) no Hoare annotation was computed. [2023-11-28 23:29:32,101 INFO L899 garLoopResultBuilder]: For program point L56(lines 56 83) no Hoare annotation was computed. [2023-11-28 23:29:32,101 INFO L895 garLoopResultBuilder]: At program point L98(line 98) the Hoare annotation is: (let ((.cse0 (select |#memory_int#1| |~#WrapperStruct00~0.base|))) (and (<= (mod (select .cse0 (+ |~#WrapperStruct00~0.offset| 8)) 4294967296) 2147483647) (not (= (mod (select .cse0 (+ |~#WrapperStruct00~0.offset| 25)) 256) 0)) (<= (mod (select .cse0 (+ |~#WrapperStruct00~0.offset| 26)) 256) 1))) [2023-11-28 23:29:32,101 INFO L899 garLoopResultBuilder]: For program point L98-1(line 98) no Hoare annotation was computed. [2023-11-28 23:29:32,101 INFO L899 garLoopResultBuilder]: For program point L65(lines 65 73) no Hoare annotation was computed. [2023-11-28 23:29:32,101 INFO L899 garLoopResultBuilder]: For program point L65-1(lines 65 73) no Hoare annotation was computed. [2023-11-28 23:29:32,101 INFO L895 garLoopResultBuilder]: At program point L90(line 90) the Hoare annotation is: (let ((.cse0 (select |#memory_int#1| |~#WrapperStruct00~0.base|))) (let ((.cse3 (select .cse0 (+ |~#WrapperStruct00~0.offset| 26)))) (let ((.cse5 (select .cse0 (+ |~#WrapperStruct00~0.offset| 16))) (.cse1 (select .cse0 (+ |~#WrapperStruct00~0.offset| 17))) (.cse7 (select .cse0 (+ |~#WrapperStruct00~0.offset| 15))) (.cse4 (select .cse0 (+ |~#WrapperStruct00~0.offset| 25))) (.cse6 (= |ULTIMATE.start_updateVariables_#t~mem43#1| (select .cse0 (+ |~#WrapperStruct00~0.offset| 8)))) (.cse2 (mod .cse3 256))) (or (and (= (select .cse0 (+ |~#WrapperStruct00~0.offset| 14)) .cse1) (= .cse2 1) (= .cse3 .cse4) (= .cse5 (select .cse0 (+ |~#WrapperStruct00~0.offset| 27))) .cse6 (= (select .cse0 (+ |~#WrapperStruct00~0.offset| 21)) .cse7)) (and (or (= (+ .cse5 .cse1) .cse7) (not (= .cse7 (select .cse0 (+ |~#WrapperStruct00~0.offset| 12))))) (not (= (mod .cse4 256) 0)) .cse6 (<= .cse2 1)))))) [2023-11-28 23:29:32,102 INFO L899 garLoopResultBuilder]: For program point L90-1(line 90) no Hoare annotation was computed. [2023-11-28 23:29:32,102 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-11-28 23:29:32,102 INFO L899 garLoopResultBuilder]: For program point L74(lines 74 82) no Hoare annotation was computed. [2023-11-28 23:29:32,102 INFO L895 garLoopResultBuilder]: At program point L99(line 99) the Hoare annotation is: (let ((.cse0 (select |#memory_int#1| |~#WrapperStruct00~0.base|))) (and (<= (mod (select .cse0 (+ |~#WrapperStruct00~0.offset| 8)) 4294967296) 2147483647) (not (= (mod (select .cse0 (+ |~#WrapperStruct00~0.offset| 25)) 256) 0)) (<= (mod (select .cse0 (+ |~#WrapperStruct00~0.offset| 26)) 256) 1))) [2023-11-28 23:29:32,102 INFO L899 garLoopResultBuilder]: For program point L99-1(line 99) no Hoare annotation was computed. [2023-11-28 23:29:32,102 INFO L899 garLoopResultBuilder]: For program point L66(lines 66 70) no Hoare annotation was computed. [2023-11-28 23:29:32,102 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-28 23:29:32,102 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 79) no Hoare annotation was computed. [2023-11-28 23:29:32,102 INFO L899 garLoopResultBuilder]: For program point L67(line 67) no Hoare annotation was computed. [2023-11-28 23:29:32,102 INFO L899 garLoopResultBuilder]: For program point L67-2(line 67) no Hoare annotation was computed. [2023-11-28 23:29:32,102 INFO L899 garLoopResultBuilder]: For program point L67-3(line 67) no Hoare annotation was computed. [2023-11-28 23:29:32,102 INFO L899 garLoopResultBuilder]: For program point L67-5(line 67) no Hoare annotation was computed. [2023-11-28 23:29:32,103 INFO L895 garLoopResultBuilder]: At program point L92(line 92) the Hoare annotation is: (let ((.cse0 (select |#memory_int#1| |~#WrapperStruct00~0.base|))) (let ((.cse3 (select .cse0 (+ |~#WrapperStruct00~0.offset| 26)))) (let ((.cse6 (select .cse0 (+ |~#WrapperStruct00~0.offset| 16))) (.cse1 (select .cse0 (+ |~#WrapperStruct00~0.offset| 17))) (.cse7 (select .cse0 (+ |~#WrapperStruct00~0.offset| 15))) (.cse5 (<= (mod (select .cse0 (+ |~#WrapperStruct00~0.offset| 8)) 4294967296) 2147483647)) (.cse4 (select .cse0 (+ |~#WrapperStruct00~0.offset| 25))) (.cse2 (mod .cse3 256))) (or (and (= (select .cse0 (+ |~#WrapperStruct00~0.offset| 14)) .cse1) (= .cse2 1) (= .cse3 .cse4) .cse5 (= .cse6 (select .cse0 (+ |~#WrapperStruct00~0.offset| 27))) (= (select .cse0 (+ |~#WrapperStruct00~0.offset| 21)) .cse7)) (and (or (= (+ .cse6 .cse1) .cse7) (not (= .cse7 (select .cse0 (+ |~#WrapperStruct00~0.offset| 12))))) .cse5 (not (= (mod .cse4 256) 0)) (<= .cse2 1)))))) [2023-11-28 23:29:32,103 INFO L899 garLoopResultBuilder]: For program point L92-1(line 92) no Hoare annotation was computed. [2023-11-28 23:29:32,103 INFO L895 garLoopResultBuilder]: At program point L117-2(lines 117 123) the Hoare annotation is: (let ((.cse3 (select |#memory_int#1| |~#WrapperStruct00~0.base|))) (let ((.cse8 (select .cse3 (+ |~#WrapperStruct00~0.offset| 8))) (.cse7 (select .cse3 (+ |~#WrapperStruct00~0.offset| 26)))) (let ((.cse1 (select .cse3 (+ |~#WrapperStruct00~0.offset| 17))) (.cse6 (mod .cse7 256)) (.cse5 (select .cse3 (+ |~#WrapperStruct00~0.offset| 25))) (.cse4 (<= (mod .cse8 4294967296) 2147483647)) (.cse0 (select .cse3 (+ |~#WrapperStruct00~0.offset| 16))) (.cse2 (select .cse3 (+ |~#WrapperStruct00~0.offset| 15)))) (or (and (or (= (+ .cse0 .cse1) .cse2) (not (= .cse2 (select .cse3 (+ |~#WrapperStruct00~0.offset| 12))))) .cse4 (not (= (mod .cse5 256) 0)) (<= .cse6 1)) (and (= (select .cse3 (+ |~#WrapperStruct00~0.offset| 14)) .cse1) (= .cse6 1) (= .cse7 .cse5) .cse4 (= .cse0 (select .cse3 (+ |~#WrapperStruct00~0.offset| 27))) (= (mod (+ (select .cse3 (+ |~#WrapperStruct00~0.offset| 4)) (* 4294967295 .cse8)) 4294967296) (mod (select .cse3 |~#WrapperStruct00~0.offset|) 4294967296)) (= (select .cse3 (+ |~#WrapperStruct00~0.offset| 21)) .cse2)))))) [2023-11-28 23:29:32,103 INFO L899 garLoopResultBuilder]: For program point L117-3(lines 117 123) no Hoare annotation was computed. [2023-11-28 23:29:32,103 INFO L895 garLoopResultBuilder]: At program point L101(line 101) the Hoare annotation is: (let ((.cse0 (select |#memory_int#1| |~#WrapperStruct00~0.base|))) (and (<= (mod (select .cse0 (+ |~#WrapperStruct00~0.offset| 8)) 4294967296) 2147483647) (not (= (mod (select .cse0 (+ |~#WrapperStruct00~0.offset| 25)) 256) 0)) (<= (mod (select .cse0 (+ |~#WrapperStruct00~0.offset| 26)) 256) 1))) [2023-11-28 23:29:32,103 INFO L899 garLoopResultBuilder]: For program point L101-1(line 101) no Hoare annotation was computed. [2023-11-28 23:29:32,103 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2023-11-28 23:29:32,103 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-11-28 23:29:32,103 INFO L899 garLoopResultBuilder]: For program point L20-2(line 20) no Hoare annotation was computed. [2023-11-28 23:29:32,103 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(line 20) no Hoare annotation was computed. [2023-11-28 23:29:32,106 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:29:32,108 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-28 23:29:32,120 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 16] could not be translated [2023-11-28 23:29:32,120 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 17] could not be translated [2023-11-28 23:29:32,121 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 15] could not be translated [2023-11-28 23:29:32,121 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 15] could not be translated [2023-11-28 23:29:32,121 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 12] could not be translated [2023-11-28 23:29:32,121 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 8] could not be translated [2023-11-28 23:29:32,123 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 25] could not be translated [2023-11-28 23:29:32,123 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 26] could not be translated [2023-11-28 23:29:32,123 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 14] could not be translated [2023-11-28 23:29:32,123 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 17] could not be translated [2023-11-28 23:29:32,124 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 26] could not be translated [2023-11-28 23:29:32,124 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 26] could not be translated [2023-11-28 23:29:32,124 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 25] could not be translated [2023-11-28 23:29:32,124 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 8] could not be translated [2023-11-28 23:29:32,124 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 16] could not be translated [2023-11-28 23:29:32,124 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 27] could not be translated [2023-11-28 23:29:32,124 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 4] could not be translated [2023-11-28 23:29:32,125 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 8] could not be translated [2023-11-28 23:29:32,125 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset] could not be translated [2023-11-28 23:29:32,125 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 21] could not be translated [2023-11-28 23:29:32,125 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 15] could not be translated [2023-11-28 23:29:32,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:29:32 BoogieIcfgContainer [2023-11-28 23:29:32,126 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-28 23:29:32,126 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-28 23:29:32,126 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-28 23:29:32,126 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-28 23:29:32,127 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:29:04" (3/4) ... [2023-11-28 23:29:32,129 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-28 23:29:32,132 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-28 23:29:32,141 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-28 23:29:32,142 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-28 23:29:32,143 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-28 23:29:32,143 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-28 23:29:32,273 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-28 23:29:32,274 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-28 23:29:32,274 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-28 23:29:32,274 INFO L158 Benchmark]: Toolchain (without parser) took 28397.90ms. Allocated memory was 146.8MB in the beginning and 255.9MB in the end (delta: 109.1MB). Free memory was 111.3MB in the beginning and 198.9MB in the end (delta: -87.6MB). Peak memory consumption was 23.3MB. Max. memory is 16.1GB. [2023-11-28 23:29:32,275 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 102.8MB. Free memory is still 50.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 23:29:32,275 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.85ms. Allocated memory is still 146.8MB. Free memory was 110.9MB in the beginning and 95.8MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-28 23:29:32,275 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.24ms. Allocated memory is still 146.8MB. Free memory was 95.8MB in the beginning and 92.4MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-28 23:29:32,276 INFO L158 Benchmark]: Boogie Preprocessor took 70.10ms. Allocated memory is still 146.8MB. Free memory was 92.4MB in the beginning and 88.6MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-28 23:29:32,276 INFO L158 Benchmark]: RCFGBuilder took 554.12ms. Allocated memory is still 146.8MB. Free memory was 88.6MB in the beginning and 101.9MB in the end (delta: -13.3MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2023-11-28 23:29:32,276 INFO L158 Benchmark]: TraceAbstraction took 27290.36ms. Allocated memory was 146.8MB in the beginning and 255.9MB in the end (delta: 109.1MB). Free memory was 101.1MB in the beginning and 208.4MB in the end (delta: -107.2MB). Peak memory consumption was 137.6MB. Max. memory is 16.1GB. [2023-11-28 23:29:32,277 INFO L158 Benchmark]: Witness Printer took 147.69ms. Allocated memory is still 255.9MB. Free memory was 208.4MB in the beginning and 198.9MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-28 23:29:32,278 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 102.8MB. Free memory is still 50.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 270.85ms. Allocated memory is still 146.8MB. Free memory was 110.9MB in the beginning and 95.8MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.24ms. Allocated memory is still 146.8MB. Free memory was 95.8MB in the beginning and 92.4MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.10ms. Allocated memory is still 146.8MB. Free memory was 92.4MB in the beginning and 88.6MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 554.12ms. Allocated memory is still 146.8MB. Free memory was 88.6MB in the beginning and 101.9MB in the end (delta: -13.3MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. * TraceAbstraction took 27290.36ms. Allocated memory was 146.8MB in the beginning and 255.9MB in the end (delta: 109.1MB). Free memory was 101.1MB in the beginning and 208.4MB in the end (delta: -107.2MB). Peak memory consumption was 137.6MB. Max. memory is 16.1GB. * Witness Printer took 147.69ms. Allocated memory is still 255.9MB. Free memory was 208.4MB in the beginning and 198.9MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 16] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 17] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 15] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 15] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 12] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 8] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 25] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 26] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 14] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 17] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 26] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 26] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 25] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 8] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 16] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 27] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 4] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 8] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 21] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int#1[~#WrapperStruct00~0!base][~#WrapperStruct00~0!offset + 15] could not be translated * 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: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 27.2s, OverallIterations: 21, TraceHistogramMax: 14, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 8.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2469 SdHoareTripleChecker+Valid, 6.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2417 mSDsluCounter, 6540 SdHoareTripleChecker+Invalid, 6.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4751 mSDsCounter, 299 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5540 IncrementalHoareTripleChecker+Invalid, 5839 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 299 mSolverCounterUnsat, 1789 mSDtfsCounter, 5540 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3319 GetRequests, 3083 SyntacticMatches, 2 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=278occurred in iteration=9, InterpolantAutomatonStates: 199, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 21 MinimizatonAttempts, 297 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 16 LocationsWithAnnotation, 429 PreInvPairs, 466 NumberOfFragments, 1620 HoareAnnotationTreeSize, 429 FomulaSimplifications, 6478 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 16 FomulaSimplificationsInter, 10426 FormulaSimplificationTreeSizeReductionInter, 2.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 2457 NumberOfCodeBlocks, 2457 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 3229 ConstructedInterpolants, 0 QuantifiedInterpolants, 17763 SizeOfPredicates, 141 NumberOfNonLiveVariables, 7336 ConjunctsInSsa, 409 ConjunctsInUnsatCore, 29 InterpolantComputations, 18 PerfectInterpolantSequences, 10265/10556 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: 117]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2023-11-28 23:29:32,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f706e1-ab05-4e07-bd54-48007daabfc1/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