./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-34.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/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_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-34.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/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_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/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 9a63cb7f0f4bcb602d996a2f5bca04060f41dddcdd6e5c22a959463569230eb1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:39:04,287 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:39:04,361 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-28 23:39:04,367 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:39:04,367 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:39:04,394 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:39:04,395 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:39:04,395 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:39:04,396 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:39:04,397 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:39:04,397 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:39:04,398 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:39:04,399 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:39:04,399 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:39:04,400 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:39:04,401 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:39:04,401 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:39:04,402 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:39:04,402 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:39:04,403 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:39:04,403 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:39:04,404 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:39:04,404 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:39:04,405 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:39:04,405 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:39:04,406 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:39:04,406 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:39:04,407 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:39:04,407 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:39:04,408 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:39:04,408 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:39:04,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:39:04,409 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:39:04,410 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:39:04,410 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:39:04,411 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:39:04,411 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:39:04,411 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:39:04,412 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:39:04,412 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:39:04,413 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:39:04,414 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:39:04,414 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_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a63cb7f0f4bcb602d996a2f5bca04060f41dddcdd6e5c22a959463569230eb1 [2023-11-28 23:39:04,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:39:04,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:39:04,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:39:04,712 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:39:04,713 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:39:04,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-34.i [2023-11-28 23:39:08,065 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:39:08,297 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:39:08,298 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-34.i [2023-11-28 23:39:08,310 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/data/15fd5096a/c3b34b85099341feac0bbc38dd52b56c/FLAGbbc4f8b65 [2023-11-28 23:39:08,329 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/data/15fd5096a/c3b34b85099341feac0bbc38dd52b56c [2023-11-28 23:39:08,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:39:08,334 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:39:08,335 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:39:08,336 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:39:08,342 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:39:08,343 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:39:08" (1/1) ... [2023-11-28 23:39:08,344 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33aadd1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:08, skipping insertion in model container [2023-11-28 23:39:08,345 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:39:08" (1/1) ... [2023-11-28 23:39:08,393 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:39:08,574 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_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-34.i[919,932] [2023-11-28 23:39:08,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:39:08,669 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:39:08,685 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_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-34.i[919,932] [2023-11-28 23:39:08,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:39:08,748 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:39:08,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:08 WrapperNode [2023-11-28 23:39:08,749 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:39:08,750 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:39:08,750 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:39:08,750 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:39:08,759 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:08" (1/1) ... [2023-11-28 23:39:08,775 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:08" (1/1) ... [2023-11-28 23:39:08,822 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 262 [2023-11-28 23:39:08,823 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:39:08,823 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:39:08,824 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:39:08,824 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:39:08,836 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:08" (1/1) ... [2023-11-28 23:39:08,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:08" (1/1) ... [2023-11-28 23:39:08,841 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:08" (1/1) ... [2023-11-28 23:39:08,868 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-28 23:39:08,868 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:08" (1/1) ... [2023-11-28 23:39:08,868 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:08" (1/1) ... [2023-11-28 23:39:08,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:08" (1/1) ... [2023-11-28 23:39:08,894 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:08" (1/1) ... [2023-11-28 23:39:08,898 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:08" (1/1) ... [2023-11-28 23:39:08,902 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:08" (1/1) ... [2023-11-28 23:39:08,907 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:39:08,909 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:39:08,909 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:39:08,909 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:39:08,910 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:08" (1/1) ... [2023-11-28 23:39:08,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:39:08,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:39:08,945 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:39:08,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:39:08,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:39:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-28 23:39:08,995 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-28 23:39:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 23:39:08,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:39:08,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:39:09,110 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:39:09,113 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:39:09,680 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:39:09,718 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:39:09,718 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-28 23:39:09,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:39:09 BoogieIcfgContainer [2023-11-28 23:39:09,719 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:39:09,723 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:39:09,723 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:39:09,727 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:39:09,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:39:08" (1/3) ... [2023-11-28 23:39:09,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9c4cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:39:09, skipping insertion in model container [2023-11-28 23:39:09,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:39:08" (2/3) ... [2023-11-28 23:39:09,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9c4cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:39:09, skipping insertion in model container [2023-11-28 23:39:09,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:39:09" (3/3) ... [2023-11-28 23:39:09,730 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-cn_file-34.i [2023-11-28 23:39:09,753 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:39:09,753 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-28 23:39:09,808 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:39:09,814 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;@3b14e175, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:39:09,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-28 23:39:09,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 67 states have internal predecessors, (102), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-28 23:39:09,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-28 23:39:09,841 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:39:09,842 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:39:09,843 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:39:09,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:39:09,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1796924827, now seen corresponding path program 1 times [2023-11-28 23:39:09,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:39:09,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825521737] [2023-11-28 23:39:09,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:09,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:39:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:39:10,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:39:10,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825521737] [2023-11-28 23:39:10,127 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-28 23:39:10,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112025623] [2023-11-28 23:39:10,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:10,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:39:10,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:39:10,136 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:39:10,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 23:39:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:39:10,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-28 23:39:10,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:39:10,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2023-11-28 23:39:10,464 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:39:10,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112025623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:39:10,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:39:10,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:39:10,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369793689] [2023-11-28 23:39:10,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:39:10,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-28 23:39:10,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:39:10,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-28 23:39:10,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 23:39:10,518 INFO L87 Difference]: Start difference. First operand has 102 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 67 states have internal predecessors, (102), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-28 23:39:10,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:39:10,572 INFO L93 Difference]: Finished difference Result 201 states and 367 transitions. [2023-11-28 23:39:10,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-28 23:39:10,575 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) Word has length 208 [2023-11-28 23:39:10,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:39:10,584 INFO L225 Difference]: With dead ends: 201 [2023-11-28 23:39:10,584 INFO L226 Difference]: Without dead ends: 100 [2023-11-28 23:39:10,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 207 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 23:39:10,592 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:39:10,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 160 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:39:10,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-28 23:39:10,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-11-28 23:39:10,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 65 states have (on average 1.4923076923076923) internal successors, (97), 65 states have internal predecessors, (97), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-28 23:39:10,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 163 transitions. [2023-11-28 23:39:10,649 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 163 transitions. Word has length 208 [2023-11-28 23:39:10,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:39:10,650 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 163 transitions. [2023-11-28 23:39:10,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-28 23:39:10,651 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 163 transitions. [2023-11-28 23:39:10,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-28 23:39:10,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:39:10,657 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:39:10,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 23:39:10,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-28 23:39:10,859 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:39:10,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:39:10,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1560672353, now seen corresponding path program 1 times [2023-11-28 23:39:10,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:39:10,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742737312] [2023-11-28 23:39:10,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:10,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:39:10,945 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:39:10,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817890506] [2023-11-28 23:39:10,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:10,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:39:10,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:39:10,948 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:39:10,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 23:39:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:39:11,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-28 23:39:11,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:39:11,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-28 23:39:11,625 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:39:11,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:39:11,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742737312] [2023-11-28 23:39:11,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:39:11,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817890506] [2023-11-28 23:39:11,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817890506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:39:11,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:39:11,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:39:11,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961442720] [2023-11-28 23:39:11,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:39:11,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:39:11,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:39:11,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:39:11,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:39:11,631 INFO L87 Difference]: Start difference. First operand 100 states and 163 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:39:12,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:39:12,127 INFO L93 Difference]: Finished difference Result 299 states and 486 transitions. [2023-11-28 23:39:12,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:39:12,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 208 [2023-11-28 23:39:12,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:39:12,135 INFO L225 Difference]: With dead ends: 299 [2023-11-28 23:39:12,135 INFO L226 Difference]: Without dead ends: 200 [2023-11-28 23:39:12,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:39:12,139 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 159 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:39:12,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 595 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 23:39:12,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-11-28 23:39:12,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 102. [2023-11-28 23:39:12,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 67 states have (on average 1.4776119402985075) internal successors, (99), 67 states have internal predecessors, (99), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-28 23:39:12,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 165 transitions. [2023-11-28 23:39:12,170 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 165 transitions. Word has length 208 [2023-11-28 23:39:12,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:39:12,172 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 165 transitions. [2023-11-28 23:39:12,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:39:12,173 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 165 transitions. [2023-11-28 23:39:12,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-11-28 23:39:12,178 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:39:12,178 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:39:12,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 23:39:12,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:39:12,382 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:39:12,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:39:12,383 INFO L85 PathProgramCache]: Analyzing trace with hash -225334497, now seen corresponding path program 1 times [2023-11-28 23:39:12,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:39:12,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924138233] [2023-11-28 23:39:12,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:12,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:39:12,446 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:39:12,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1567808552] [2023-11-28 23:39:12,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:12,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:39:12,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:39:12,448 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:39:12,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 23:39:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:39:12,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 23:39:12,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:39:13,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-28 23:39:13,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:39:13,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:39:13,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924138233] [2023-11-28 23:39:13,530 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:39:13,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567808552] [2023-11-28 23:39:13,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567808552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:39:13,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:39:13,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:39:13,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393139524] [2023-11-28 23:39:13,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:39:13,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:39:13,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:39:13,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:39:13,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:39:13,534 INFO L87 Difference]: Start difference. First operand 102 states and 165 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:39:13,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:39:13,611 INFO L93 Difference]: Finished difference Result 333 states and 537 transitions. [2023-11-28 23:39:13,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:39:13,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 209 [2023-11-28 23:39:13,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:39:13,616 INFO L225 Difference]: With dead ends: 333 [2023-11-28 23:39:13,616 INFO L226 Difference]: Without dead ends: 232 [2023-11-28 23:39:13,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:39:13,619 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 163 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:39:13,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 469 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:39:13,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-28 23:39:13,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 203. [2023-11-28 23:39:13,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 134 states have (on average 1.4701492537313432) internal successors, (197), 134 states have internal predecessors, (197), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2023-11-28 23:39:13,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 329 transitions. [2023-11-28 23:39:13,672 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 329 transitions. Word has length 209 [2023-11-28 23:39:13,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:39:13,673 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 329 transitions. [2023-11-28 23:39:13,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:39:13,674 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 329 transitions. [2023-11-28 23:39:13,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-28 23:39:13,678 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:39:13,678 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:39:13,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 23:39:13,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:39:13,879 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:39:13,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:39:13,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1973781639, now seen corresponding path program 1 times [2023-11-28 23:39:13,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:39:13,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339522009] [2023-11-28 23:39:13,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:13,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:39:13,941 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:39:13,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853218725] [2023-11-28 23:39:13,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:13,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:39:13,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:39:13,943 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:39:13,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 23:39:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:39:14,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-28 23:39:14,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:39:16,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 276 proven. 90 refuted. 0 times theorem prover too weak. 1746 trivial. 0 not checked. [2023-11-28 23:39:16,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:39:17,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:39:17,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339522009] [2023-11-28 23:39:17,050 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:39:17,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853218725] [2023-11-28 23:39:17,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853218725] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:39:17,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:39:17,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-28 23:39:17,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887552325] [2023-11-28 23:39:17,052 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 23:39:17,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 23:39:17,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:39:17,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 23:39:17,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:39:17,055 INFO L87 Difference]: Start difference. First operand 203 states and 329 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-28 23:39:18,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:39:18,186 INFO L93 Difference]: Finished difference Result 617 states and 977 transitions. [2023-11-28 23:39:18,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-28 23:39:18,187 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 210 [2023-11-28 23:39:18,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:39:18,192 INFO L225 Difference]: With dead ends: 617 [2023-11-28 23:39:18,192 INFO L226 Difference]: Without dead ends: 415 [2023-11-28 23:39:18,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2023-11-28 23:39:18,195 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 364 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-28 23:39:18,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 703 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-28 23:39:18,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-11-28 23:39:18,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 365. [2023-11-28 23:39:18,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 261 states have (on average 1.4597701149425288) internal successors, (381), 261 states have internal predecessors, (381), 99 states have call successors, (99), 4 states have call predecessors, (99), 4 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-28 23:39:18,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 579 transitions. [2023-11-28 23:39:18,274 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 579 transitions. Word has length 210 [2023-11-28 23:39:18,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:39:18,275 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 579 transitions. [2023-11-28 23:39:18,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-28 23:39:18,276 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 579 transitions. [2023-11-28 23:39:18,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-28 23:39:18,279 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:39:18,280 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:39:18,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-28 23:39:18,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:39:18,482 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:39:18,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:39:18,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1164435013, now seen corresponding path program 1 times [2023-11-28 23:39:18,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:39:18,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335030863] [2023-11-28 23:39:18,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:18,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:39:18,529 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:39:18,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [899199085] [2023-11-28 23:39:18,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:18,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:39:18,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:39:18,531 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:39:18,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 23:39:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:39:18,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 23:39:18,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:39:19,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-28 23:39:19,017 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:39:19,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:39:19,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335030863] [2023-11-28 23:39:19,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:39:19,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899199085] [2023-11-28 23:39:19,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899199085] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:39:19,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:39:19,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:39:19,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779865945] [2023-11-28 23:39:19,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:39:19,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:39:19,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:39:19,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:39:19,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:39:19,021 INFO L87 Difference]: Start difference. First operand 365 states and 579 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:39:19,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:39:19,196 INFO L93 Difference]: Finished difference Result 617 states and 982 transitions. [2023-11-28 23:39:19,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:39:19,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-11-28 23:39:19,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:39:19,201 INFO L225 Difference]: With dead ends: 617 [2023-11-28 23:39:19,201 INFO L226 Difference]: Without dead ends: 347 [2023-11-28 23:39:19,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 207 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 23:39:19,204 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 107 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:39:19,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 466 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:39:19,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-11-28 23:39:19,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 288. [2023-11-28 23:39:19,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 184 states have (on average 1.4293478260869565) internal successors, (263), 184 states have internal predecessors, (263), 99 states have call successors, (99), 4 states have call predecessors, (99), 4 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-28 23:39:19,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 461 transitions. [2023-11-28 23:39:19,265 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 461 transitions. Word has length 210 [2023-11-28 23:39:19,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:39:19,266 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 461 transitions. [2023-11-28 23:39:19,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:39:19,266 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 461 transitions. [2023-11-28 23:39:19,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-28 23:39:19,270 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:39:19,270 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:39:19,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-28 23:39:19,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:39:19,471 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:39:19,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:39:19,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1386975625, now seen corresponding path program 1 times [2023-11-28 23:39:19,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:39:19,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089704705] [2023-11-28 23:39:19,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:19,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:39:19,513 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:39:19,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793926219] [2023-11-28 23:39:19,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:19,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:39:19,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:39:19,515 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:39:19,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 23:39:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:39:19,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-28 23:39:19,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:39:21,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 276 proven. 90 refuted. 0 times theorem prover too weak. 1746 trivial. 0 not checked. [2023-11-28 23:39:21,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:39:25,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:39:25,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089704705] [2023-11-28 23:39:25,518 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:39:25,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793926219] [2023-11-28 23:39:25,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793926219] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:39:25,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:39:25,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-28 23:39:25,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758558908] [2023-11-28 23:39:25,519 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 23:39:25,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-28 23:39:25,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:39:25,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-28 23:39:25,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-11-28 23:39:25,521 INFO L87 Difference]: Start difference. First operand 288 states and 461 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-28 23:39:26,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:39:26,579 INFO L93 Difference]: Finished difference Result 617 states and 970 transitions. [2023-11-28 23:39:26,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-28 23:39:26,580 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 210 [2023-11-28 23:39:26,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:39:26,585 INFO L225 Difference]: With dead ends: 617 [2023-11-28 23:39:26,585 INFO L226 Difference]: Without dead ends: 415 [2023-11-28 23:39:26,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=173, Invalid=639, Unknown=0, NotChecked=0, Total=812 [2023-11-28 23:39:26,588 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 237 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:39:26,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 872 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-28 23:39:26,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-11-28 23:39:26,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 365. [2023-11-28 23:39:26,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 261 states have (on average 1.4444444444444444) internal successors, (377), 261 states have internal predecessors, (377), 99 states have call successors, (99), 4 states have call predecessors, (99), 4 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-28 23:39:26,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 575 transitions. [2023-11-28 23:39:26,652 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 575 transitions. Word has length 210 [2023-11-28 23:39:26,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:39:26,653 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 575 transitions. [2023-11-28 23:39:26,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-28 23:39:26,654 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 575 transitions. [2023-11-28 23:39:26,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-28 23:39:26,656 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:39:26,656 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:39:26,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-28 23:39:26,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-28 23:39:26,857 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:39:26,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:39:26,858 INFO L85 PathProgramCache]: Analyzing trace with hash -577628999, now seen corresponding path program 1 times [2023-11-28 23:39:26,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:39:26,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699082063] [2023-11-28 23:39:26,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:26,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:39:26,893 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:39:26,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [56659651] [2023-11-28 23:39:26,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:26,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:39:26,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:39:26,895 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:39:26,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 23:39:27,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:39:27,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-28 23:39:27,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:39:30,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-28 23:39:30,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:39:30,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:39:30,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699082063] [2023-11-28 23:39:30,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:39:30,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56659651] [2023-11-28 23:39:30,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56659651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:39:30,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:39:30,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-28 23:39:30,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643317139] [2023-11-28 23:39:30,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:39:30,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-28 23:39:30,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:39:30,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-28 23:39:30,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:39:30,094 INFO L87 Difference]: Start difference. First operand 365 states and 575 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:39:32,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:39:32,254 INFO L93 Difference]: Finished difference Result 1029 states and 1613 transitions. [2023-11-28 23:39:32,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-28 23:39:32,255 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-11-28 23:39:32,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:39:32,262 INFO L225 Difference]: With dead ends: 1029 [2023-11-28 23:39:32,262 INFO L226 Difference]: Without dead ends: 827 [2023-11-28 23:39:32,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2023-11-28 23:39:32,264 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 355 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:39:32,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 808 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-28 23:39:32,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2023-11-28 23:39:32,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 690. [2023-11-28 23:39:32,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 511 states have (on average 1.4344422700587085) internal successors, (733), 512 states have internal predecessors, (733), 170 states have call successors, (170), 8 states have call predecessors, (170), 8 states have return successors, (170), 169 states have call predecessors, (170), 170 states have call successors, (170) [2023-11-28 23:39:32,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1073 transitions. [2023-11-28 23:39:32,364 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1073 transitions. Word has length 210 [2023-11-28 23:39:32,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:39:32,364 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 1073 transitions. [2023-11-28 23:39:32,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:39:32,365 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1073 transitions. [2023-11-28 23:39:32,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-28 23:39:32,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:39:32,367 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:39:32,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-28 23:39:32,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:39:32,568 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:39:32,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:39:32,569 INFO L85 PathProgramCache]: Analyzing trace with hash -520370697, now seen corresponding path program 1 times [2023-11-28 23:39:32,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:39:32,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132476211] [2023-11-28 23:39:32,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:32,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:39:32,620 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:39:32,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238747237] [2023-11-28 23:39:32,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:32,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:39:32,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:39:32,623 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:39:32,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-28 23:39:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:39:32,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-28 23:39:32,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:39:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-28 23:39:38,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:39:38,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:39:38,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132476211] [2023-11-28 23:39:38,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:39:38,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238747237] [2023-11-28 23:39:38,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238747237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:39:38,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:39:38,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-28 23:39:38,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217920217] [2023-11-28 23:39:38,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:39:38,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:39:38,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:39:38,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:39:38,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:39:38,320 INFO L87 Difference]: Start difference. First operand 690 states and 1073 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:39:44,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:39:44,849 INFO L93 Difference]: Finished difference Result 1276 states and 1996 transitions. [2023-11-28 23:39:44,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-28 23:39:44,850 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-11-28 23:39:44,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:39:44,857 INFO L225 Difference]: With dead ends: 1276 [2023-11-28 23:39:44,858 INFO L226 Difference]: Without dead ends: 827 [2023-11-28 23:39:44,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-28 23:39:44,861 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 306 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:39:44,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 876 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-28 23:39:44,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2023-11-28 23:39:44,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 692. [2023-11-28 23:39:44,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 513 states have (on average 1.432748538011696) internal successors, (735), 514 states have internal predecessors, (735), 170 states have call successors, (170), 8 states have call predecessors, (170), 8 states have return successors, (170), 169 states have call predecessors, (170), 170 states have call successors, (170) [2023-11-28 23:39:44,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1075 transitions. [2023-11-28 23:39:44,958 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1075 transitions. Word has length 210 [2023-11-28 23:39:44,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:39:44,958 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 1075 transitions. [2023-11-28 23:39:44,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:39:44,959 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1075 transitions. [2023-11-28 23:39:44,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-28 23:39:44,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:39:44,961 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:39:44,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-28 23:39:45,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:39:45,169 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:39:45,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:39:45,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1043966952, now seen corresponding path program 1 times [2023-11-28 23:39:45,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:39:45,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912217410] [2023-11-28 23:39:45,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:45,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:39:45,201 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:39:45,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2057815050] [2023-11-28 23:39:45,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:39:45,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:39:45,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:39:45,203 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:39:45,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-28 23:39:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:39:45,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-28 23:39:45,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:39:47,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 708 proven. 249 refuted. 0 times theorem prover too weak. 1155 trivial. 0 not checked. [2023-11-28 23:39:47,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:39:56,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 24 proven. 72 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2023-11-28 23:39:56,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:39:56,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912217410] [2023-11-28 23:39:56,508 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:39:56,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057815050] [2023-11-28 23:39:56,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057815050] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:39:56,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:39:56,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2023-11-28 23:39:56,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454687477] [2023-11-28 23:39:56,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:39:56,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-28 23:39:56,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:39:56,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-28 23:39:56,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2023-11-28 23:39:56,511 INFO L87 Difference]: Start difference. First operand 692 states and 1075 transitions. Second operand has 26 states, 25 states have (on average 4.24) internal successors, (106), 26 states have internal predecessors, (106), 6 states have call successors, (66), 4 states have call predecessors, (66), 7 states have return successors, (66), 6 states have call predecessors, (66), 6 states have call successors, (66) [2023-11-28 23:40:16,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:40:16,503 INFO L93 Difference]: Finished difference Result 2411 states and 3614 transitions. [2023-11-28 23:40:16,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-11-28 23:40:16,504 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.24) internal successors, (106), 26 states have internal predecessors, (106), 6 states have call successors, (66), 4 states have call predecessors, (66), 7 states have return successors, (66), 6 states have call predecessors, (66), 6 states have call successors, (66) Word has length 210 [2023-11-28 23:40:16,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:40:16,525 INFO L225 Difference]: With dead ends: 2411 [2023-11-28 23:40:16,525 INFO L226 Difference]: Without dead ends: 2175 [2023-11-28 23:40:16,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3389 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=1921, Invalid=7585, Unknown=0, NotChecked=0, Total=9506 [2023-11-28 23:40:16,534 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 1497 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 2206 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 2578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 2206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:40:16,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 1218 Invalid, 2578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 2206 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-11-28 23:40:16,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2175 states. [2023-11-28 23:40:16,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2175 to 1183. [2023-11-28 23:40:16,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 836 states have (on average 1.4031100478468899) internal successors, (1173), 840 states have internal predecessors, (1173), 321 states have call successors, (321), 25 states have call predecessors, (321), 25 states have return successors, (321), 317 states have call predecessors, (321), 321 states have call successors, (321) [2023-11-28 23:40:16,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1815 transitions. [2023-11-28 23:40:16,975 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1815 transitions. Word has length 210 [2023-11-28 23:40:16,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:40:16,976 INFO L495 AbstractCegarLoop]: Abstraction has 1183 states and 1815 transitions. [2023-11-28 23:40:16,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.24) internal successors, (106), 26 states have internal predecessors, (106), 6 states have call successors, (66), 4 states have call predecessors, (66), 7 states have return successors, (66), 6 states have call predecessors, (66), 6 states have call successors, (66) [2023-11-28 23:40:16,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1815 transitions. [2023-11-28 23:40:16,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-28 23:40:16,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:40:16,979 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:40:16,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-28 23:40:17,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:40:17,180 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:40:17,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:40:17,181 INFO L85 PathProgramCache]: Analyzing trace with hash -836424323, now seen corresponding path program 1 times [2023-11-28 23:40:17,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:40:17,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471690279] [2023-11-28 23:40:17,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:17,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:40:17,223 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:40:17,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1626210351] [2023-11-28 23:40:17,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:17,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:40:17,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:40:17,225 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:40:17,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-28 23:40:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:17,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-28 23:40:17,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:40:22,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-28 23:40:22,975 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:40:22,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:40:22,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471690279] [2023-11-28 23:40:22,976 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:40:22,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626210351] [2023-11-28 23:40:22,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626210351] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:40:22,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:40:22,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-28 23:40:22,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62935405] [2023-11-28 23:40:22,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:40:22,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-28 23:40:22,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:40:22,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-28 23:40:22,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:40:22,979 INFO L87 Difference]: Start difference. First operand 1183 states and 1815 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:40:28,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:40:28,324 INFO L93 Difference]: Finished difference Result 1791 states and 2774 transitions. [2023-11-28 23:40:28,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-28 23:40:28,325 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-11-28 23:40:28,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:40:28,334 INFO L225 Difference]: With dead ends: 1791 [2023-11-28 23:40:28,334 INFO L226 Difference]: Without dead ends: 1430 [2023-11-28 23:40:28,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2023-11-28 23:40:28,336 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 406 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:40:28,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 1227 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-28 23:40:28,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2023-11-28 23:40:28,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1341. [2023-11-28 23:40:28,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 934 states have (on average 1.4004282655246252) internal successors, (1308), 936 states have internal predecessors, (1308), 377 states have call successors, (377), 29 states have call predecessors, (377), 29 states have return successors, (377), 375 states have call predecessors, (377), 377 states have call successors, (377) [2023-11-28 23:40:28,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 2062 transitions. [2023-11-28 23:40:28,758 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 2062 transitions. Word has length 210 [2023-11-28 23:40:28,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:40:28,759 INFO L495 AbstractCegarLoop]: Abstraction has 1341 states and 2062 transitions. [2023-11-28 23:40:28,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:40:28,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 2062 transitions. [2023-11-28 23:40:28,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-28 23:40:28,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:40:28,761 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:40:28,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-28 23:40:28,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-28 23:40:28,962 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:40:28,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:40:28,962 INFO L85 PathProgramCache]: Analyzing trace with hash -779166021, now seen corresponding path program 1 times [2023-11-28 23:40:28,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:40:28,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007279283] [2023-11-28 23:40:28,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:28,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:40:28,989 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:40:28,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1038152665] [2023-11-28 23:40:28,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:28,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:40:28,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:40:28,991 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:40:28,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-28 23:40:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:29,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-28 23:40:29,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:40:35,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-28 23:40:35,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:40:35,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:40:35,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007279283] [2023-11-28 23:40:35,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:40:35,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038152665] [2023-11-28 23:40:35,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038152665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:40:35,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:40:35,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-28 23:40:35,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514046896] [2023-11-28 23:40:35,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:40:35,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:40:35,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:40:35,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:40:35,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:40:35,424 INFO L87 Difference]: Start difference. First operand 1341 states and 2062 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:40:48,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:40:48,887 INFO L93 Difference]: Finished difference Result 1873 states and 2901 transitions. [2023-11-28 23:40:48,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-28 23:40:48,888 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 210 [2023-11-28 23:40:48,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:40:48,896 INFO L225 Difference]: With dead ends: 1873 [2023-11-28 23:40:48,896 INFO L226 Difference]: Without dead ends: 1430 [2023-11-28 23:40:48,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-28 23:40:48,899 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 443 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-11-28 23:40:48,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 1392 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2023-11-28 23:40:48,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2023-11-28 23:40:49,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1342. [2023-11-28 23:40:49,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 935 states have (on average 1.4) internal successors, (1309), 937 states have internal predecessors, (1309), 377 states have call successors, (377), 29 states have call predecessors, (377), 29 states have return successors, (377), 375 states have call predecessors, (377), 377 states have call successors, (377) [2023-11-28 23:40:49,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 2063 transitions. [2023-11-28 23:40:49,320 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 2063 transitions. Word has length 210 [2023-11-28 23:40:49,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:40:49,321 INFO L495 AbstractCegarLoop]: Abstraction has 1342 states and 2063 transitions. [2023-11-28 23:40:49,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:40:49,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 2063 transitions. [2023-11-28 23:40:49,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-28 23:40:49,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:40:49,323 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:40:49,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-28 23:40:49,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-28 23:40:49,524 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:40:49,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:40:49,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1765376786, now seen corresponding path program 1 times [2023-11-28 23:40:49,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:40:49,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585783865] [2023-11-28 23:40:49,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:49,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:40:49,554 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:40:49,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [25211407] [2023-11-28 23:40:49,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:49,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:40:49,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:40:49,556 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:40:49,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-28 23:40:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:49,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:40:49,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:40:49,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-28 23:40:49,761 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:40:49,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:40:49,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585783865] [2023-11-28 23:40:49,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:40:49,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25211407] [2023-11-28 23:40:49,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25211407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:40:49,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:40:49,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:40:49,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997473714] [2023-11-28 23:40:49,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:40:49,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:40:49,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:40:49,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:40:49,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:40:49,764 INFO L87 Difference]: Start difference. First operand 1342 states and 2063 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:40:50,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:40:50,259 INFO L93 Difference]: Finished difference Result 1848 states and 2852 transitions. [2023-11-28 23:40:50,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:40:50,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-11-28 23:40:50,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:40:50,268 INFO L225 Difference]: With dead ends: 1848 [2023-11-28 23:40:50,268 INFO L226 Difference]: Without dead ends: 1342 [2023-11-28 23:40:50,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:40:50,270 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 11 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:40:50,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 301 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:40:50,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2023-11-28 23:40:50,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1342. [2023-11-28 23:40:50,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 935 states have (on average 1.3935828877005347) internal successors, (1303), 937 states have internal predecessors, (1303), 377 states have call successors, (377), 29 states have call predecessors, (377), 29 states have return successors, (377), 375 states have call predecessors, (377), 377 states have call successors, (377) [2023-11-28 23:40:50,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 2057 transitions. [2023-11-28 23:40:50,688 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 2057 transitions. Word has length 211 [2023-11-28 23:40:50,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:40:50,688 INFO L495 AbstractCegarLoop]: Abstraction has 1342 states and 2057 transitions. [2023-11-28 23:40:50,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:40:50,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 2057 transitions. [2023-11-28 23:40:50,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-28 23:40:50,691 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:40:50,691 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:40:50,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-28 23:40:50,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-28 23:40:50,892 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:40:50,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:40:50,892 INFO L85 PathProgramCache]: Analyzing trace with hash -2136563500, now seen corresponding path program 1 times [2023-11-28 23:40:50,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:40:50,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326395243] [2023-11-28 23:40:50,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:50,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:40:50,921 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:40:50,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [323233888] [2023-11-28 23:40:50,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:50,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:40:50,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:40:50,923 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:40:50,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-28 23:40:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:51,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-28 23:40:51,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:40:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-28 23:40:52,936 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:40:52,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:40:52,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326395243] [2023-11-28 23:40:52,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:40:52,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323233888] [2023-11-28 23:40:52,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323233888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:40:52,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:40:52,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-28 23:40:52,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121022687] [2023-11-28 23:40:52,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:40:52,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:40:52,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:40:52,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:40:52,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:40:52,939 INFO L87 Difference]: Start difference. First operand 1342 states and 2057 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:40:54,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:40:54,422 INFO L93 Difference]: Finished difference Result 1982 states and 3013 transitions. [2023-11-28 23:40:54,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:40:54,423 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-11-28 23:40:54,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:40:54,433 INFO L225 Difference]: With dead ends: 1982 [2023-11-28 23:40:54,433 INFO L226 Difference]: Without dead ends: 1698 [2023-11-28 23:40:54,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:40:54,435 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 156 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-28 23:40:54,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 657 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-28 23:40:54,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2023-11-28 23:40:54,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1509. [2023-11-28 23:40:54,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1081 states have (on average 1.3885291396854764) internal successors, (1501), 1086 states have internal predecessors, (1501), 392 states have call successors, (392), 35 states have call predecessors, (392), 35 states have return successors, (392), 387 states have call predecessors, (392), 392 states have call successors, (392) [2023-11-28 23:40:54,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 2285 transitions. [2023-11-28 23:40:54,869 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 2285 transitions. Word has length 211 [2023-11-28 23:40:54,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:40:54,869 INFO L495 AbstractCegarLoop]: Abstraction has 1509 states and 2285 transitions. [2023-11-28 23:40:54,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:40:54,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 2285 transitions. [2023-11-28 23:40:54,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-28 23:40:54,871 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:40:54,871 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:40:54,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-28 23:40:55,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-28 23:40:55,072 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:40:55,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:40:55,072 INFO L85 PathProgramCache]: Analyzing trace with hash -2079305198, now seen corresponding path program 1 times [2023-11-28 23:40:55,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:40:55,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458318981] [2023-11-28 23:40:55,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:55,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:40:55,103 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:40:55,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1526310989] [2023-11-28 23:40:55,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:40:55,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:40:55,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:40:55,104 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:40:55,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-28 23:40:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:40:55,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-28 23:40:55,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:40:57,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-28 23:40:57,118 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:40:57,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:40:57,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458318981] [2023-11-28 23:40:57,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:40:57,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526310989] [2023-11-28 23:40:57,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526310989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:40:57,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:40:57,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-28 23:40:57,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580212404] [2023-11-28 23:40:57,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:40:57,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:40:57,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:40:57,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:40:57,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:40:57,120 INFO L87 Difference]: Start difference. First operand 1509 states and 2285 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:40:59,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:40:59,716 INFO L93 Difference]: Finished difference Result 2518 states and 3827 transitions. [2023-11-28 23:40:59,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-28 23:40:59,717 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-11-28 23:40:59,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:40:59,727 INFO L225 Difference]: With dead ends: 2518 [2023-11-28 23:40:59,727 INFO L226 Difference]: Without dead ends: 2147 [2023-11-28 23:40:59,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-11-28 23:40:59,729 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 599 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:40:59,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 1030 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-28 23:40:59,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2023-11-28 23:41:00,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 1891. [2023-11-28 23:41:00,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1357 states have (on average 1.4008843036109064) internal successors, (1901), 1362 states have internal predecessors, (1901), 491 states have call successors, (491), 42 states have call predecessors, (491), 42 states have return successors, (491), 486 states have call predecessors, (491), 491 states have call successors, (491) [2023-11-28 23:41:00,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 2883 transitions. [2023-11-28 23:41:00,246 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 2883 transitions. Word has length 211 [2023-11-28 23:41:00,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:00,247 INFO L495 AbstractCegarLoop]: Abstraction has 1891 states and 2883 transitions. [2023-11-28 23:41:00,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:41:00,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 2883 transitions. [2023-11-28 23:41:00,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-28 23:41:00,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:00,249 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:41:00,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-28 23:41:00,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-28 23:41:00,450 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:00,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:00,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1569283952, now seen corresponding path program 1 times [2023-11-28 23:41:00,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:00,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004927523] [2023-11-28 23:41:00,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:00,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:00,478 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:41:00,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [664421030] [2023-11-28 23:41:00,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:00,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:41:00,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:41:00,480 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:41:00,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-28 23:41:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:00,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-28 23:41:00,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:41:02,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-28 23:41:02,444 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:41:02,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:02,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004927523] [2023-11-28 23:41:02,444 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:41:02,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664421030] [2023-11-28 23:41:02,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664421030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:02,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:02,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-28 23:41:02,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540647170] [2023-11-28 23:41:02,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:02,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:41:02,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:02,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:41:02,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:41:02,446 INFO L87 Difference]: Start difference. First operand 1891 states and 2883 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:41:04,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:04,028 INFO L93 Difference]: Finished difference Result 2547 states and 3910 transitions. [2023-11-28 23:41:04,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:41:04,028 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-11-28 23:41:04,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:04,045 INFO L225 Difference]: With dead ends: 2547 [2023-11-28 23:41:04,045 INFO L226 Difference]: Without dead ends: 2177 [2023-11-28 23:41:04,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-28 23:41:04,047 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 260 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-28 23:41:04,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 970 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-28 23:41:04,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2177 states. [2023-11-28 23:41:04,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2177 to 2062. [2023-11-28 23:41:04,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 1467 states have (on average 1.4021813224267212) internal successors, (2057), 1470 states have internal predecessors, (2057), 549 states have call successors, (549), 45 states have call predecessors, (549), 45 states have return successors, (549), 546 states have call predecessors, (549), 549 states have call successors, (549) [2023-11-28 23:41:04,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 3155 transitions. [2023-11-28 23:41:04,611 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 3155 transitions. Word has length 211 [2023-11-28 23:41:04,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:04,612 INFO L495 AbstractCegarLoop]: Abstraction has 2062 states and 3155 transitions. [2023-11-28 23:41:04,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:41:04,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 3155 transitions. [2023-11-28 23:41:04,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-28 23:41:04,614 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:04,614 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:41:04,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-28 23:41:04,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-28 23:41:04,815 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:04,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:04,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1512025650, now seen corresponding path program 1 times [2023-11-28 23:41:04,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:04,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562244830] [2023-11-28 23:41:04,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:04,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:04,841 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:41:04,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515233298] [2023-11-28 23:41:04,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:04,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:41:04,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:41:04,844 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:41:04,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-28 23:41:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:05,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-28 23:41:05,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:41:07,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-28 23:41:07,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:41:07,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:07,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562244830] [2023-11-28 23:41:07,010 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:41:07,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515233298] [2023-11-28 23:41:07,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515233298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:07,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:07,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-28 23:41:07,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508383287] [2023-11-28 23:41:07,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:07,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:41:07,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:07,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:41:07,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:41:07,012 INFO L87 Difference]: Start difference. First operand 2062 states and 3155 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:41:10,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:10,030 INFO L93 Difference]: Finished difference Result 2857 states and 4384 transitions. [2023-11-28 23:41:10,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-28 23:41:10,031 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-11-28 23:41:10,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:10,050 INFO L225 Difference]: With dead ends: 2857 [2023-11-28 23:41:10,051 INFO L226 Difference]: Without dead ends: 2570 [2023-11-28 23:41:10,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2023-11-28 23:41:10,054 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 551 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-28 23:41:10,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1445 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-28 23:41:10,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2023-11-28 23:41:10,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 2306. [2023-11-28 23:41:10,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2306 states, 1642 states have (on average 1.4110840438489647) internal successors, (2317), 1645 states have internal predecessors, (2317), 615 states have call successors, (615), 48 states have call predecessors, (615), 48 states have return successors, (615), 612 states have call predecessors, (615), 615 states have call successors, (615) [2023-11-28 23:41:10,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 3547 transitions. [2023-11-28 23:41:10,698 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 3547 transitions. Word has length 211 [2023-11-28 23:41:10,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:10,698 INFO L495 AbstractCegarLoop]: Abstraction has 2306 states and 3547 transitions. [2023-11-28 23:41:10,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:41:10,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 3547 transitions. [2023-11-28 23:41:10,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-28 23:41:10,700 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:10,701 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:41:10,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-28 23:41:10,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-28 23:41:10,901 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:10,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:10,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1406951612, now seen corresponding path program 1 times [2023-11-28 23:41:10,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:10,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645360769] [2023-11-28 23:41:10,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:10,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:10,928 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:41:10,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [460779010] [2023-11-28 23:41:10,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:10,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:41:10,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:41:10,929 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:41:10,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-28 23:41:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:11,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-28 23:41:11,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:41:12,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-28 23:41:12,755 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:41:12,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:12,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645360769] [2023-11-28 23:41:12,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:41:12,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460779010] [2023-11-28 23:41:12,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460779010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:12,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:12,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-28 23:41:12,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783780649] [2023-11-28 23:41:12,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:12,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-28 23:41:12,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:12,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-28 23:41:12,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:41:12,757 INFO L87 Difference]: Start difference. First operand 2306 states and 3547 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:41:15,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:15,845 INFO L93 Difference]: Finished difference Result 3861 states and 5976 transitions. [2023-11-28 23:41:15,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 23:41:15,846 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-11-28 23:41:15,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:15,856 INFO L225 Difference]: With dead ends: 3861 [2023-11-28 23:41:15,857 INFO L226 Difference]: Without dead ends: 2435 [2023-11-28 23:41:15,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2023-11-28 23:41:15,860 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 352 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:41:15,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 841 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-28 23:41:15,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2435 states. [2023-11-28 23:41:16,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2435 to 2318. [2023-11-28 23:41:16,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2318 states, 1654 states have (on average 1.4081015719467957) internal successors, (2329), 1657 states have internal predecessors, (2329), 615 states have call successors, (615), 48 states have call predecessors, (615), 48 states have return successors, (615), 612 states have call predecessors, (615), 615 states have call successors, (615) [2023-11-28 23:41:16,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2318 states to 2318 states and 3559 transitions. [2023-11-28 23:41:16,399 INFO L78 Accepts]: Start accepts. Automaton has 2318 states and 3559 transitions. Word has length 211 [2023-11-28 23:41:16,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:16,400 INFO L495 AbstractCegarLoop]: Abstraction has 2318 states and 3559 transitions. [2023-11-28 23:41:16,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:41:16,400 INFO L276 IsEmpty]: Start isEmpty. Operand 2318 states and 3559 transitions. [2023-11-28 23:41:16,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-28 23:41:16,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:16,402 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:41:16,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-28 23:41:16,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-28 23:41:16,602 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:16,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:16,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1464209914, now seen corresponding path program 1 times [2023-11-28 23:41:16,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:16,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575673889] [2023-11-28 23:41:16,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:16,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:16,620 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:41:16,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64602018] [2023-11-28 23:41:16,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:16,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:41:16,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:41:16,621 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:41:16,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-28 23:41:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:16,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-28 23:41:16,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:41:23,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-28 23:41:23,719 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:41:23,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:23,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575673889] [2023-11-28 23:41:23,719 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:41:23,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64602018] [2023-11-28 23:41:23,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64602018] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:23,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:23,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-28 23:41:23,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243930489] [2023-11-28 23:41:23,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:23,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:41:23,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:23,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:41:23,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:41:23,722 INFO L87 Difference]: Start difference. First operand 2318 states and 3559 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:41:32,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:32,133 INFO L93 Difference]: Finished difference Result 3834 states and 5950 transitions. [2023-11-28 23:41:32,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-28 23:41:32,134 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-11-28 23:41:32,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:32,150 INFO L225 Difference]: With dead ends: 3834 [2023-11-28 23:41:32,151 INFO L226 Difference]: Without dead ends: 2423 [2023-11-28 23:41:32,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-28 23:41:32,154 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 372 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-28 23:41:32,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 720 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-28 23:41:32,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2023-11-28 23:41:32,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 2322. [2023-11-28 23:41:32,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2322 states, 1658 states have (on average 1.4071170084439084) internal successors, (2333), 1661 states have internal predecessors, (2333), 615 states have call successors, (615), 48 states have call predecessors, (615), 48 states have return successors, (615), 612 states have call predecessors, (615), 615 states have call successors, (615) [2023-11-28 23:41:32,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 3563 transitions. [2023-11-28 23:41:32,704 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 3563 transitions. Word has length 211 [2023-11-28 23:41:32,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:32,704 INFO L495 AbstractCegarLoop]: Abstraction has 2322 states and 3563 transitions. [2023-11-28 23:41:32,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:41:32,705 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 3563 transitions. [2023-11-28 23:41:32,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2023-11-28 23:41:32,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:32,706 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:41:32,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-28 23:41:32,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-28 23:41:32,907 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:32,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:32,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1205414590, now seen corresponding path program 1 times [2023-11-28 23:41:32,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:32,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6059843] [2023-11-28 23:41:32,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:32,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:32,928 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:41:32,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [52683049] [2023-11-28 23:41:32,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:32,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:41:32,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:41:32,929 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:41:32,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-28 23:41:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:33,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-28 23:41:33,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:41:40,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-28 23:41:40,649 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:41:40,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:40,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6059843] [2023-11-28 23:41:40,649 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:41:40,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52683049] [2023-11-28 23:41:40,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52683049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:41:40,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:41:40,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-28 23:41:40,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574800372] [2023-11-28 23:41:40,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:41:40,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:41:40,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:40,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:41:40,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:41:40,651 INFO L87 Difference]: Start difference. First operand 2322 states and 3563 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:41:51,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:51,152 INFO L93 Difference]: Finished difference Result 3387 states and 5255 transitions. [2023-11-28 23:41:51,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-28 23:41:51,152 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 211 [2023-11-28 23:41:51,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:51,166 INFO L225 Difference]: With dead ends: 3387 [2023-11-28 23:41:51,167 INFO L226 Difference]: Without dead ends: 2387 [2023-11-28 23:41:51,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-11-28 23:41:51,170 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 352 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:41:51,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 1388 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-11-28 23:41:51,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2387 states. [2023-11-28 23:41:51,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2387 to 2324. [2023-11-28 23:41:51,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2324 states, 1660 states have (on average 1.4066265060240963) internal successors, (2335), 1663 states have internal predecessors, (2335), 615 states have call successors, (615), 48 states have call predecessors, (615), 48 states have return successors, (615), 612 states have call predecessors, (615), 615 states have call successors, (615) [2023-11-28 23:41:51,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2324 states to 2324 states and 3565 transitions. [2023-11-28 23:41:51,782 INFO L78 Accepts]: Start accepts. Automaton has 2324 states and 3565 transitions. Word has length 211 [2023-11-28 23:41:51,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:51,782 INFO L495 AbstractCegarLoop]: Abstraction has 2324 states and 3565 transitions. [2023-11-28 23:41:51,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:41:51,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2324 states and 3565 transitions. [2023-11-28 23:41:51,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-11-28 23:41:51,784 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:51,784 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:41:51,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-28 23:41:51,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:41:51,985 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:51,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:51,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1933817678, now seen corresponding path program 1 times [2023-11-28 23:41:51,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:51,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168402774] [2023-11-28 23:41:51,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:51,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:52,005 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:41:52,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281063105] [2023-11-28 23:41:52,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:52,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:41:52,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:41:52,007 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:41:52,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-28 23:41:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:52,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-28 23:41:52,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:41:52,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 878 proven. 69 refuted. 0 times theorem prover too weak. 1165 trivial. 0 not checked. [2023-11-28 23:41:52,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:41:52,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 27 proven. 69 refuted. 0 times theorem prover too weak. 2016 trivial. 0 not checked. [2023-11-28 23:41:52,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:41:52,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168402774] [2023-11-28 23:41:52,900 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:41:52,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281063105] [2023-11-28 23:41:52,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281063105] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:41:52,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:41:52,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-11-28 23:41:52,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973360428] [2023-11-28 23:41:52,901 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:41:52,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-28 23:41:52,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:41:52,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-28 23:41:52,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-11-28 23:41:52,903 INFO L87 Difference]: Start difference. First operand 2324 states and 3565 transitions. Second operand has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 18 states have internal predecessors, (101), 4 states have call successors, (66), 3 states have call predecessors, (66), 5 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2023-11-28 23:41:56,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:41:56,139 INFO L93 Difference]: Finished difference Result 5221 states and 7919 transitions. [2023-11-28 23:41:56,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-28 23:41:56,140 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 18 states have internal predecessors, (101), 4 states have call successors, (66), 3 states have call predecessors, (66), 5 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) Word has length 212 [2023-11-28 23:41:56,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:41:56,153 INFO L225 Difference]: With dead ends: 5221 [2023-11-28 23:41:56,153 INFO L226 Difference]: Without dead ends: 3885 [2023-11-28 23:41:56,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1028 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=742, Invalid=2680, Unknown=0, NotChecked=0, Total=3422 [2023-11-28 23:41:56,158 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 1998 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 1272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2023 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 2612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1272 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-28 23:41:56,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2023 Valid, 1721 Invalid, 2612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1272 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-28 23:41:56,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2023-11-28 23:41:56,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 2963. [2023-11-28 23:41:56,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2963 states, 2143 states have (on average 1.3915072328511433) internal successors, (2982), 2152 states have internal predecessors, (2982), 741 states have call successors, (741), 78 states have call predecessors, (741), 78 states have return successors, (741), 732 states have call predecessors, (741), 741 states have call successors, (741) [2023-11-28 23:41:56,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2963 states to 2963 states and 4464 transitions. [2023-11-28 23:41:56,778 INFO L78 Accepts]: Start accepts. Automaton has 2963 states and 4464 transitions. Word has length 212 [2023-11-28 23:41:56,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:41:56,778 INFO L495 AbstractCegarLoop]: Abstraction has 2963 states and 4464 transitions. [2023-11-28 23:41:56,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 18 states have internal predecessors, (101), 4 states have call successors, (66), 3 states have call predecessors, (66), 5 states have return successors, (66), 4 states have call predecessors, (66), 4 states have call successors, (66) [2023-11-28 23:41:56,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2963 states and 4464 transitions. [2023-11-28 23:41:56,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-11-28 23:41:56,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:41:56,780 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:41:56,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-28 23:41:56,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:41:56,981 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:41:56,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:41:56,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1706323985, now seen corresponding path program 1 times [2023-11-28 23:41:56,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:41:56,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841825068] [2023-11-28 23:41:56,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:56,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:41:57,000 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:41:57,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088847620] [2023-11-28 23:41:57,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:41:57,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:41:57,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:41:57,001 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:41:57,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-28 23:41:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:41:57,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-28 23:41:57,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:42:03,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-28 23:42:03,842 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:42:03,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:42:03,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841825068] [2023-11-28 23:42:03,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:42:03,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088847620] [2023-11-28 23:42:03,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088847620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:42:03,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:42:03,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-28 23:42:03,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858636320] [2023-11-28 23:42:03,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:42:03,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:42:03,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:42:03,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:42:03,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:42:03,845 INFO L87 Difference]: Start difference. First operand 2963 states and 4464 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:42:17,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:42:17,547 INFO L93 Difference]: Finished difference Result 5114 states and 7720 transitions. [2023-11-28 23:42:17,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-28 23:42:17,548 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 212 [2023-11-28 23:42:17,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:42:17,559 INFO L225 Difference]: With dead ends: 5114 [2023-11-28 23:42:17,559 INFO L226 Difference]: Without dead ends: 3477 [2023-11-28 23:42:17,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=380, Invalid=1102, Unknown=0, NotChecked=0, Total=1482 [2023-11-28 23:42:17,564 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 569 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-28 23:42:17,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 1234 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-28 23:42:17,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3477 states. [2023-11-28 23:42:18,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3477 to 2999. [2023-11-28 23:42:18,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2999 states, 2179 states have (on average 1.3914639743001376) internal successors, (3032), 2188 states have internal predecessors, (3032), 741 states have call successors, (741), 78 states have call predecessors, (741), 78 states have return successors, (741), 732 states have call predecessors, (741), 741 states have call successors, (741) [2023-11-28 23:42:18,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 4514 transitions. [2023-11-28 23:42:18,192 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 4514 transitions. Word has length 212 [2023-11-28 23:42:18,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:42:18,192 INFO L495 AbstractCegarLoop]: Abstraction has 2999 states and 4514 transitions. [2023-11-28 23:42:18,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:42:18,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 4514 transitions. [2023-11-28 23:42:18,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-11-28 23:42:18,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:42:18,194 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:18,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-28 23:42:18,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:42:18,394 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:42:18,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:42:18,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1779296685, now seen corresponding path program 1 times [2023-11-28 23:42:18,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:42:18,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627456581] [2023-11-28 23:42:18,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:42:18,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:42:18,415 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:42:18,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [51402827] [2023-11-28 23:42:18,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:42:18,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:42:18,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:42:18,416 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:42:18,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-28 23:42:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:42:18,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-28 23:42:18,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:42:25,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-28 23:42:25,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:42:25,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:42:25,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627456581] [2023-11-28 23:42:25,441 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:42:25,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51402827] [2023-11-28 23:42:25,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51402827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:42:25,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:42:25,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-28 23:42:25,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677019221] [2023-11-28 23:42:25,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:42:25,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:42:25,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:42:25,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:42:25,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:42:25,443 INFO L87 Difference]: Start difference. First operand 2999 states and 4514 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:42:35,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:42:35,552 INFO L93 Difference]: Finished difference Result 5154 states and 7768 transitions. [2023-11-28 23:42:35,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-28 23:42:35,553 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 212 [2023-11-28 23:42:35,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:42:35,562 INFO L225 Difference]: With dead ends: 5154 [2023-11-28 23:42:35,562 INFO L226 Difference]: Without dead ends: 3517 [2023-11-28 23:42:35,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=380, Invalid=1102, Unknown=0, NotChecked=0, Total=1482 [2023-11-28 23:42:35,568 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 593 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:42:35,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 1125 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-28 23:42:35,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3517 states. [2023-11-28 23:42:36,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3517 to 2991. [2023-11-28 23:42:36,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2991 states, 2171 states have (on average 1.3919852602487333) internal successors, (3022), 2180 states have internal predecessors, (3022), 741 states have call successors, (741), 78 states have call predecessors, (741), 78 states have return successors, (741), 732 states have call predecessors, (741), 741 states have call successors, (741) [2023-11-28 23:42:36,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2991 states to 2991 states and 4504 transitions. [2023-11-28 23:42:36,410 INFO L78 Accepts]: Start accepts. Automaton has 2991 states and 4504 transitions. Word has length 212 [2023-11-28 23:42:36,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:42:36,411 INFO L495 AbstractCegarLoop]: Abstraction has 2991 states and 4504 transitions. [2023-11-28 23:42:36,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:42:36,411 INFO L276 IsEmpty]: Start isEmpty. Operand 2991 states and 4504 transitions. [2023-11-28 23:42:36,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-11-28 23:42:36,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:42:36,414 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:36,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-28 23:42:36,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:42:36,614 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:42:36,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:42:36,615 INFO L85 PathProgramCache]: Analyzing trace with hash -2021363763, now seen corresponding path program 1 times [2023-11-28 23:42:36,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:42:36,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348217227] [2023-11-28 23:42:36,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:42:36,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:42:36,640 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:42:36,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [942043339] [2023-11-28 23:42:36,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:42:36,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:42:36,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:42:36,642 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:42:36,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-28 23:42:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:42:36,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-28 23:42:36,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:42:45,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-28 23:42:45,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:42:45,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:42:45,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348217227] [2023-11-28 23:42:45,554 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:42:45,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942043339] [2023-11-28 23:42:45,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942043339] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:42:45,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:42:45,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-28 23:42:45,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065402016] [2023-11-28 23:42:45,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:42:45,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:42:45,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:42:45,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:42:45,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:42:45,557 INFO L87 Difference]: Start difference. First operand 2991 states and 4504 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:43:03,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:03,860 INFO L93 Difference]: Finished difference Result 4436 states and 6693 transitions. [2023-11-28 23:43:03,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-28 23:43:03,861 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 212 [2023-11-28 23:43:03,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:03,868 INFO L225 Difference]: With dead ends: 4436 [2023-11-28 23:43:03,868 INFO L226 Difference]: Without dead ends: 3374 [2023-11-28 23:43:03,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=380, Invalid=1102, Unknown=0, NotChecked=0, Total=1482 [2023-11-28 23:43:03,872 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 599 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:03,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 1821 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-11-28 23:43:03,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3374 states. [2023-11-28 23:43:04,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3374 to 3009. [2023-11-28 23:43:04,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3009 states, 2189 states have (on average 1.3919597989949748) internal successors, (3047), 2198 states have internal predecessors, (3047), 741 states have call successors, (741), 78 states have call predecessors, (741), 78 states have return successors, (741), 732 states have call predecessors, (741), 741 states have call successors, (741) [2023-11-28 23:43:04,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3009 states to 3009 states and 4529 transitions. [2023-11-28 23:43:04,470 INFO L78 Accepts]: Start accepts. Automaton has 3009 states and 4529 transitions. Word has length 212 [2023-11-28 23:43:04,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:04,470 INFO L495 AbstractCegarLoop]: Abstraction has 3009 states and 4529 transitions. [2023-11-28 23:43:04,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:43:04,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3009 states and 4529 transitions. [2023-11-28 23:43:04,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-11-28 23:43:04,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:04,472 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:04,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-28 23:43:04,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:04,673 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:04,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:04,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1212017137, now seen corresponding path program 1 times [2023-11-28 23:43:04,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:04,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448334445] [2023-11-28 23:43:04,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:04,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:04,697 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:43:04,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [399762804] [2023-11-28 23:43:04,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:04,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:04,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:43:04,699 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:43:04,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-28 23:43:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:04,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-28 23:43:04,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:43:10,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2023-11-28 23:43:10,676 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:43:10,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:43:10,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448334445] [2023-11-28 23:43:10,677 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:43:10,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399762804] [2023-11-28 23:43:10,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399762804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:43:10,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:43:10,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-28 23:43:10,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174284772] [2023-11-28 23:43:10,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:43:10,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:43:10,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:43:10,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:43:10,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:43:10,679 INFO L87 Difference]: Start difference. First operand 3009 states and 4529 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:43:27,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:43:27,596 INFO L93 Difference]: Finished difference Result 4456 states and 6717 transitions. [2023-11-28 23:43:27,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-28 23:43:27,597 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 212 [2023-11-28 23:43:27,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:43:27,605 INFO L225 Difference]: With dead ends: 4456 [2023-11-28 23:43:27,605 INFO L226 Difference]: Without dead ends: 3394 [2023-11-28 23:43:27,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=380, Invalid=1102, Unknown=0, NotChecked=0, Total=1482 [2023-11-28 23:43:27,609 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 565 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:43:27,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 1810 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-11-28 23:43:27,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3394 states. [2023-11-28 23:43:28,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3394 to 3005. [2023-11-28 23:43:28,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3005 states, 2185 states have (on average 1.3922196796338673) internal successors, (3042), 2194 states have internal predecessors, (3042), 741 states have call successors, (741), 78 states have call predecessors, (741), 78 states have return successors, (741), 732 states have call predecessors, (741), 741 states have call successors, (741) [2023-11-28 23:43:28,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3005 states to 3005 states and 4524 transitions. [2023-11-28 23:43:28,272 INFO L78 Accepts]: Start accepts. Automaton has 3005 states and 4524 transitions. Word has length 212 [2023-11-28 23:43:28,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:43:28,273 INFO L495 AbstractCegarLoop]: Abstraction has 3005 states and 4524 transitions. [2023-11-28 23:43:28,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2023-11-28 23:43:28,273 INFO L276 IsEmpty]: Start isEmpty. Operand 3005 states and 4524 transitions. [2023-11-28 23:43:28,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-11-28 23:43:28,275 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:43:28,275 INFO L195 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:43:28,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-28 23:43:28,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:28,476 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 23:43:28,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:43:28,477 INFO L85 PathProgramCache]: Analyzing trace with hash -177242951, now seen corresponding path program 1 times [2023-11-28 23:43:28,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:43:28,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664938478] [2023-11-28 23:43:28,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:28,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:43:28,513 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:43:28,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [495288809] [2023-11-28 23:43:28,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:43:28,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:43:28,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:43:28,515 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:43:28,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be1ec5c4-ab29-4c2a-aa0e-1eef16f22a03/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-28 23:43:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:43:28,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-28 23:43:28,706 INFO L285 TraceCheckSpWp]: Computing forward predicates...