./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal145.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/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_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal145.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/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 64bit --witnessprinter.graph.data.programhash 5e20be4858ab772b6dc124a6306f7dfa88c6f32db3edfb11120c43857b42fcfc --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:34:21,593 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:34:21,651 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 06:34:21,655 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:34:21,655 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:34:21,676 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:34:21,677 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:34:21,677 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:34:21,678 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:34:21,678 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:34:21,679 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:34:21,679 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:34:21,680 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:34:21,680 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:34:21,681 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:34:21,682 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:34:21,682 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:34:21,683 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:34:21,683 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:34:21,683 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:34:21,684 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:34:21,685 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:34:21,685 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:34:21,686 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:34:21,686 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:34:21,686 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:34:21,687 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:34:21,687 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:34:21,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:34:21,688 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:34:21,688 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:34:21,689 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:34:21,689 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:34:21,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:34:21,689 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:34:21,689 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:34:21,690 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:34:21,690 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:34:21,690 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:34:21,690 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_28d733db-788d-48d9-b22a-4d06c3f4fb9f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e20be4858ab772b6dc124a6306f7dfa88c6f32db3edfb11120c43857b42fcfc [2023-11-29 06:34:21,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:34:21,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:34:21,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:34:21,900 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:34:21,900 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:34:21,901 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal145.c [2023-11-29 06:34:24,605 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:34:25,217 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:34:25,218 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal145.c [2023-11-29 06:34:25,277 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/data/278a86c8a/288f1297acbd429e913f442e0510fcad/FLAGa4ec6816a [2023-11-29 06:34:25,292 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/data/278a86c8a/288f1297acbd429e913f442e0510fcad [2023-11-29 06:34:25,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:34:25,295 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:34:25,297 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:34:25,297 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:34:25,302 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:34:25,303 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:34:25" (1/1) ... [2023-11-29 06:34:25,304 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57b6fe12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:25, skipping insertion in model container [2023-11-29 06:34:25,304 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:34:25" (1/1) ... [2023-11-29 06:34:25,545 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:34:25,827 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_28d733db-788d-48d9-b22a-4d06c3f4fb9f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal145.c[1246,1259] [2023-11-29 06:34:27,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:34:27,402 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:34:27,411 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_28d733db-788d-48d9-b22a-4d06c3f4fb9f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal145.c[1246,1259] [2023-11-29 06:34:28,603 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:34:28,614 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:34:28,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:28 WrapperNode [2023-11-29 06:34:28,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:34:28,616 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:34:28,616 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:34:28,616 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:34:28,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:28" (1/1) ... [2023-11-29 06:34:29,003 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:28" (1/1) ... [2023-11-29 06:34:32,662 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58263 [2023-11-29 06:34:32,663 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:34:32,663 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:34:32,664 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:34:32,664 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:34:32,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:28" (1/1) ... [2023-11-29 06:34:32,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:28" (1/1) ... [2023-11-29 06:34:33,469 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:28" (1/1) ... [2023-11-29 06:34:34,095 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 06:34:34,095 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:28" (1/1) ... [2023-11-29 06:34:34,095 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:28" (1/1) ... [2023-11-29 06:34:35,015 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:28" (1/1) ... [2023-11-29 06:34:35,186 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:28" (1/1) ... [2023-11-29 06:34:35,401 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:28" (1/1) ... [2023-11-29 06:34:35,532 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:28" (1/1) ... [2023-11-29 06:34:36,228 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:34:36,229 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:34:36,229 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:34:36,229 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:34:36,230 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:28" (1/1) ... [2023-11-29 06:34:36,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:34:36,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:34:36,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:34:36,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:34:36,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:34:36,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:34:36,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:34:36,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:34:38,842 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:34:38,844 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:35:17,495 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:35:18,222 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:35:18,222 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 06:35:18,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:35:18 BoogieIcfgContainer [2023-11-29 06:35:18,228 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:35:18,231 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:35:18,231 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:35:18,234 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:35:18,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:34:25" (1/3) ... [2023-11-29 06:35:18,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4afecaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:35:18, skipping insertion in model container [2023-11-29 06:35:18,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:34:28" (2/3) ... [2023-11-29 06:35:18,236 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4afecaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:35:18, skipping insertion in model container [2023-11-29 06:35:18,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:35:18" (3/3) ... [2023-11-29 06:35:18,237 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal145.c [2023-11-29 06:35:18,257 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:35:18,257 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 06:35:18,495 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:35:18,502 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;@713c7bd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:35:18,502 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 06:35:18,544 INFO L276 IsEmpty]: Start isEmpty. Operand has 12140 states, 12138 states have (on average 1.667325753830944) internal successors, (20238), 12139 states have internal predecessors, (20238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:18,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2023-11-29 06:35:18,579 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:18,580 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:18,581 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:18,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:18,586 INFO L85 PathProgramCache]: Analyzing trace with hash 79961865, now seen corresponding path program 1 times [2023-11-29 06:35:18,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:35:18,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221760016] [2023-11-29 06:35:18,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:18,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:35:19,242 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:35:19,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998752884] [2023-11-29 06:35:19,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:19,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:35:19,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:35:19,245 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:35:19,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:35:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:22,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 2457 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 06:35:22,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:35:24,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:24,107 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:35:24,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:35:24,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221760016] [2023-11-29 06:35:24,108 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:35:24,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998752884] [2023-11-29 06:35:24,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998752884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:35:24,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:35:24,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:35:24,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767168817] [2023-11-29 06:35:24,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:35:24,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:35:24,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:35:24,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:35:24,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:35:24,165 INFO L87 Difference]: Start difference. First operand has 12140 states, 12138 states have (on average 1.667325753830944) internal successors, (20238), 12139 states have internal predecessors, (20238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 125.5) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:26,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:26,618 INFO L93 Difference]: Finished difference Result 23995 states and 40004 transitions. [2023-11-29 06:35:26,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:35:26,620 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 125.5) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 502 [2023-11-29 06:35:26,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:26,686 INFO L225 Difference]: With dead ends: 23995 [2023-11-29 06:35:26,686 INFO L226 Difference]: Without dead ends: 12138 [2023-11-29 06:35:26,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:35:26,706 INFO L413 NwaCegarLoop]: 19349 mSDtfsCounter, 19981 mSDsluCounter, 19348 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19981 SdHoareTripleChecker+Valid, 38697 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:26,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19981 Valid, 38697 Invalid, 1761 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 1760 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 06:35:26,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12138 states. [2023-11-29 06:35:27,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12138 to 12138. [2023-11-29 06:35:27,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12138 states, 12137 states have (on average 1.666803987805883) internal successors, (20230), 12137 states have internal predecessors, (20230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:27,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12138 states to 12138 states and 20230 transitions. [2023-11-29 06:35:27,212 INFO L78 Accepts]: Start accepts. Automaton has 12138 states and 20230 transitions. Word has length 502 [2023-11-29 06:35:27,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:35:27,214 INFO L495 AbstractCegarLoop]: Abstraction has 12138 states and 20230 transitions. [2023-11-29 06:35:27,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.5) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:27,215 INFO L276 IsEmpty]: Start isEmpty. Operand 12138 states and 20230 transitions. [2023-11-29 06:35:27,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2023-11-29 06:35:27,226 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:27,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:27,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:35:27,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 06:35:27,427 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:27,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:27,428 INFO L85 PathProgramCache]: Analyzing trace with hash -456612305, now seen corresponding path program 1 times [2023-11-29 06:35:27,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:35:27,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761652802] [2023-11-29 06:35:27,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:27,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:35:27,709 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:35:27,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [827063562] [2023-11-29 06:35:27,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:27,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:35:27,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:35:27,712 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:35:27,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:35:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:30,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 2460 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 06:35:30,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:35:31,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:31,725 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:35:31,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:35:31,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761652802] [2023-11-29 06:35:31,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:35:31,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827063562] [2023-11-29 06:35:31,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827063562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:35:31,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:35:31,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:35:31,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986774883] [2023-11-29 06:35:31,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:35:31,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:35:31,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:35:31,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:35:31,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:35:31,731 INFO L87 Difference]: Start difference. First operand 12138 states and 20230 transitions. Second operand has 5 states, 5 states have (on average 100.6) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:34,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:34,400 INFO L93 Difference]: Finished difference Result 23993 states and 39989 transitions. [2023-11-29 06:35:34,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:35:34,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 100.6) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 503 [2023-11-29 06:35:34,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:34,464 INFO L225 Difference]: With dead ends: 23993 [2023-11-29 06:35:34,464 INFO L226 Difference]: Without dead ends: 12138 [2023-11-29 06:35:34,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:35:34,478 INFO L413 NwaCegarLoop]: 19367 mSDtfsCounter, 19851 mSDsluCounter, 38732 mSDsCounter, 0 mSdLazyCounter, 2579 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19851 SdHoareTripleChecker+Valid, 58099 SdHoareTripleChecker+Invalid, 2581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:34,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19851 Valid, 58099 Invalid, 2581 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 2579 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 06:35:34,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12138 states. [2023-11-29 06:35:34,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12138 to 12138. [2023-11-29 06:35:34,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12138 states, 12137 states have (on average 1.6666392024388235) internal successors, (20228), 12137 states have internal predecessors, (20228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:34,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12138 states to 12138 states and 20228 transitions. [2023-11-29 06:35:34,726 INFO L78 Accepts]: Start accepts. Automaton has 12138 states and 20228 transitions. Word has length 503 [2023-11-29 06:35:34,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:35:34,727 INFO L495 AbstractCegarLoop]: Abstraction has 12138 states and 20228 transitions. [2023-11-29 06:35:34,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.6) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:34,728 INFO L276 IsEmpty]: Start isEmpty. Operand 12138 states and 20228 transitions. [2023-11-29 06:35:34,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2023-11-29 06:35:34,740 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:34,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:34,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:35:34,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:35:34,944 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:34,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:34,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1995544031, now seen corresponding path program 1 times [2023-11-29 06:35:34,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:35:34,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709148592] [2023-11-29 06:35:34,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:34,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:35:35,160 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:35:35,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [120913153] [2023-11-29 06:35:35,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:35,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:35:35,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:35:35,164 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:35:35,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:35:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:38,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 2463 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 06:35:38,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:35:38,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:38,906 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:35:38,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:35:38,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709148592] [2023-11-29 06:35:38,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:35:38,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120913153] [2023-11-29 06:35:38,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120913153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:35:38,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:35:38,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 06:35:38,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659230967] [2023-11-29 06:35:38,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:35:38,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:35:38,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:35:38,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:35:38,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:35:38,910 INFO L87 Difference]: Start difference. First operand 12138 states and 20228 transitions. Second operand has 9 states, 9 states have (on average 56.0) internal successors, (504), 8 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:42,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:42,791 INFO L93 Difference]: Finished difference Result 35848 states and 59742 transitions. [2023-11-29 06:35:42,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:35:42,791 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 56.0) internal successors, (504), 8 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 504 [2023-11-29 06:35:42,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:42,823 INFO L225 Difference]: With dead ends: 35848 [2023-11-29 06:35:42,823 INFO L226 Difference]: Without dead ends: 23993 [2023-11-29 06:35:42,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 496 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:35:42,840 INFO L413 NwaCegarLoop]: 20118 mSDtfsCounter, 136593 mSDsluCounter, 79735 mSDsCounter, 0 mSdLazyCounter, 4453 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136593 SdHoareTripleChecker+Valid, 99853 SdHoareTripleChecker+Invalid, 4459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:42,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136593 Valid, 99853 Invalid, 4459 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [6 Valid, 4453 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 06:35:42,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23993 states. [2023-11-29 06:35:43,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23993 to 12142. [2023-11-29 06:35:43,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12142 states, 12141 states have (on average 1.6664195700518902) internal successors, (20232), 12141 states have internal predecessors, (20232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:43,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12142 states to 12142 states and 20232 transitions. [2023-11-29 06:35:43,143 INFO L78 Accepts]: Start accepts. Automaton has 12142 states and 20232 transitions. Word has length 504 [2023-11-29 06:35:43,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:35:43,145 INFO L495 AbstractCegarLoop]: Abstraction has 12142 states and 20232 transitions. [2023-11-29 06:35:43,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 56.0) internal successors, (504), 8 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:43,145 INFO L276 IsEmpty]: Start isEmpty. Operand 12142 states and 20232 transitions. [2023-11-29 06:35:43,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2023-11-29 06:35:43,155 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:43,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:43,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:35:43,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:35:43,356 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:43,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:43,357 INFO L85 PathProgramCache]: Analyzing trace with hash -544253571, now seen corresponding path program 1 times [2023-11-29 06:35:43,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:35:43,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62018973] [2023-11-29 06:35:43,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:43,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:35:43,530 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:35:43,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [995413919] [2023-11-29 06:35:43,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:43,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:35:43,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:35:43,531 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:35:43,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:35:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:46,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 2470 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 06:35:46,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:35:47,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:47,462 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:35:47,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:35:47,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62018973] [2023-11-29 06:35:47,462 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:35:47,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995413919] [2023-11-29 06:35:47,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995413919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:35:47,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:35:47,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 06:35:47,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319751534] [2023-11-29 06:35:47,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:35:47,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 06:35:47,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:35:47,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 06:35:47,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:35:47,466 INFO L87 Difference]: Start difference. First operand 12142 states and 20232 transitions. Second operand has 13 states, 13 states have (on average 38.92307692307692) internal successors, (506), 12 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:50,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:50,648 INFO L93 Difference]: Finished difference Result 59594 states and 99292 transitions. [2023-11-29 06:35:50,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 06:35:50,648 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 38.92307692307692) internal successors, (506), 12 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 506 [2023-11-29 06:35:50,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:50,688 INFO L225 Difference]: With dead ends: 59594 [2023-11-29 06:35:50,688 INFO L226 Difference]: Without dead ends: 47735 [2023-11-29 06:35:50,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=255, Invalid=935, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 06:35:50,707 INFO L413 NwaCegarLoop]: 40334 mSDtfsCounter, 157651 mSDsluCounter, 301565 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157651 SdHoareTripleChecker+Valid, 341899 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.9s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:50,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157651 Valid, 341899 Invalid, 768 Unknown, 0 Unchecked, 0.9s Time], IncrementalHoareTripleChecker [6 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 06:35:50,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47735 states. [2023-11-29 06:35:51,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47735 to 12154. [2023-11-29 06:35:51,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12154 states, 12153 states have (on average 1.6659261087797252) internal successors, (20246), 12153 states have internal predecessors, (20246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:51,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12154 states to 12154 states and 20246 transitions. [2023-11-29 06:35:51,062 INFO L78 Accepts]: Start accepts. Automaton has 12154 states and 20246 transitions. Word has length 506 [2023-11-29 06:35:51,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:35:51,063 INFO L495 AbstractCegarLoop]: Abstraction has 12154 states and 20246 transitions. [2023-11-29 06:35:51,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 38.92307692307692) internal successors, (506), 12 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:51,063 INFO L276 IsEmpty]: Start isEmpty. Operand 12154 states and 20246 transitions. [2023-11-29 06:35:51,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2023-11-29 06:35:51,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:51,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:51,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:35:51,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:35:51,269 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:51,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:51,270 INFO L85 PathProgramCache]: Analyzing trace with hash 664678703, now seen corresponding path program 1 times [2023-11-29 06:35:51,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:35:51,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682080199] [2023-11-29 06:35:51,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:51,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:35:51,503 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:35:51,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2031323061] [2023-11-29 06:35:51,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:51,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:35:51,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:35:51,505 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:35:51,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:35:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:54,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 2470 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:35:54,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:35:54,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:54,193 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:35:54,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:35:54,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682080199] [2023-11-29 06:35:54,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:35:54,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031323061] [2023-11-29 06:35:54,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031323061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:35:54,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:35:54,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:35:54,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533065925] [2023-11-29 06:35:54,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:35:54,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:35:54,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:35:54,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:35:54,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:35:54,197 INFO L87 Difference]: Start difference. First operand 12154 states and 20246 transitions. Second operand has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:54,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:54,397 INFO L93 Difference]: Finished difference Result 24026 states and 40023 transitions. [2023-11-29 06:35:54,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:35:54,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 506 [2023-11-29 06:35:54,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:54,411 INFO L225 Difference]: With dead ends: 24026 [2023-11-29 06:35:54,411 INFO L226 Difference]: Without dead ends: 12155 [2023-11-29 06:35:54,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:35:54,422 INFO L413 NwaCegarLoop]: 20226 mSDtfsCounter, 6 mSDsluCounter, 20216 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 40442 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:54,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 40442 Invalid, 8 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:35:54,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12155 states. [2023-11-29 06:35:54,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12155 to 12154. [2023-11-29 06:35:54,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12154 states, 12153 states have (on average 1.665843824570065) internal successors, (20245), 12153 states have internal predecessors, (20245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:54,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12154 states to 12154 states and 20245 transitions. [2023-11-29 06:35:54,581 INFO L78 Accepts]: Start accepts. Automaton has 12154 states and 20245 transitions. Word has length 506 [2023-11-29 06:35:54,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:35:54,582 INFO L495 AbstractCegarLoop]: Abstraction has 12154 states and 20245 transitions. [2023-11-29 06:35:54,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:54,582 INFO L276 IsEmpty]: Start isEmpty. Operand 12154 states and 20245 transitions. [2023-11-29 06:35:54,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2023-11-29 06:35:54,587 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:54,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:54,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:35:54,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:35:54,788 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:54,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:54,789 INFO L85 PathProgramCache]: Analyzing trace with hash -2115141365, now seen corresponding path program 1 times [2023-11-29 06:35:54,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:35:54,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546247972] [2023-11-29 06:35:54,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:54,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:35:55,023 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:35:55,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [419341251] [2023-11-29 06:35:55,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:55,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:35:55,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:35:55,025 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:35:55,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:35:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:57,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 2470 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:35:57,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:35:57,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:57,850 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:35:57,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:35:57,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546247972] [2023-11-29 06:35:57,851 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:35:57,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419341251] [2023-11-29 06:35:57,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419341251] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:35:57,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:35:57,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:35:57,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571198529] [2023-11-29 06:35:57,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:35:57,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:35:57,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:35:57,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:35:57,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:35:57,854 INFO L87 Difference]: Start difference. First operand 12154 states and 20245 transitions. Second operand has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:58,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:58,095 INFO L93 Difference]: Finished difference Result 24027 states and 40022 transitions. [2023-11-29 06:35:58,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:35:58,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 506 [2023-11-29 06:35:58,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:58,112 INFO L225 Difference]: With dead ends: 24027 [2023-11-29 06:35:58,112 INFO L226 Difference]: Without dead ends: 12156 [2023-11-29 06:35:58,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:35:58,124 INFO L413 NwaCegarLoop]: 20226 mSDtfsCounter, 6 mSDsluCounter, 20216 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 40442 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:58,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 40442 Invalid, 8 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:35:58,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12156 states. [2023-11-29 06:35:58,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12156 to 12155. [2023-11-29 06:35:58,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12155 states, 12154 states have (on average 1.665789040645055) internal successors, (20246), 12154 states have internal predecessors, (20246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:58,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12155 states to 12155 states and 20246 transitions. [2023-11-29 06:35:58,301 INFO L78 Accepts]: Start accepts. Automaton has 12155 states and 20246 transitions. Word has length 506 [2023-11-29 06:35:58,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:35:58,302 INFO L495 AbstractCegarLoop]: Abstraction has 12155 states and 20246 transitions. [2023-11-29 06:35:58,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:58,302 INFO L276 IsEmpty]: Start isEmpty. Operand 12155 states and 20246 transitions. [2023-11-29 06:35:58,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2023-11-29 06:35:58,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:58,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:58,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 06:35:58,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:35:58,508 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:58,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:58,509 INFO L85 PathProgramCache]: Analyzing trace with hash -219948621, now seen corresponding path program 1 times [2023-11-29 06:35:58,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:35:58,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24477850] [2023-11-29 06:35:58,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:58,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:35:58,735 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:35:58,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1927746033] [2023-11-29 06:35:58,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:58,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:35:58,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:35:58,737 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:35:58,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:36:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:01,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 2473 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 06:36:01,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:02,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:36:02,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:36:02,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:02,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24477850] [2023-11-29 06:36:02,990 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:02,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927746033] [2023-11-29 06:36:02,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927746033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:36:02,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:36:02,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 06:36:02,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832722385] [2023-11-29 06:36:02,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:36:02,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:36:02,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:02,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:36:02,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:36:02,993 INFO L87 Difference]: Start difference. First operand 12155 states and 20246 transitions. Second operand has 10 states, 10 states have (on average 50.7) internal successors, (507), 10 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:05,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:05,666 INFO L93 Difference]: Finished difference Result 59937 states and 99824 transitions. [2023-11-29 06:36:05,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 06:36:05,667 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 50.7) internal successors, (507), 10 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 507 [2023-11-29 06:36:05,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:05,708 INFO L225 Difference]: With dead ends: 59937 [2023-11-29 06:36:05,709 INFO L226 Difference]: Without dead ends: 48065 [2023-11-29 06:36:05,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2023-11-29 06:36:05,725 INFO L413 NwaCegarLoop]: 20964 mSDtfsCounter, 234113 mSDsluCounter, 105423 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234113 SdHoareTripleChecker+Valid, 126387 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:05,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234113 Valid, 126387 Invalid, 251 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [8 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 06:36:05,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48065 states. [2023-11-29 06:36:05,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48065 to 12155. [2023-11-29 06:36:06,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12155 states, 12154 states have (on average 1.6657067632055291) internal successors, (20245), 12154 states have internal predecessors, (20245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:06,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12155 states to 12155 states and 20245 transitions. [2023-11-29 06:36:06,028 INFO L78 Accepts]: Start accepts. Automaton has 12155 states and 20245 transitions. Word has length 507 [2023-11-29 06:36:06,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:06,030 INFO L495 AbstractCegarLoop]: Abstraction has 12155 states and 20245 transitions. [2023-11-29 06:36:06,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 50.7) internal successors, (507), 10 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:06,030 INFO L276 IsEmpty]: Start isEmpty. Operand 12155 states and 20245 transitions. [2023-11-29 06:36:06,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2023-11-29 06:36:06,036 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:06,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:06,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 06:36:06,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:06,237 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:06,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:06,238 INFO L85 PathProgramCache]: Analyzing trace with hash -795918331, now seen corresponding path program 1 times [2023-11-29 06:36:06,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:06,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915797680] [2023-11-29 06:36:06,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:06,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:06,459 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:36:06,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1513250796] [2023-11-29 06:36:06,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:06,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:06,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:06,461 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:06,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 06:36:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:09,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 2476 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 06:36:09,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:09,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:36:09,963 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:36:09,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:09,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915797680] [2023-11-29 06:36:09,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:09,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513250796] [2023-11-29 06:36:09,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513250796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:36:09,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:36:09,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:36:09,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100473834] [2023-11-29 06:36:09,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:36:09,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:36:09,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:09,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:36:09,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:36:09,967 INFO L87 Difference]: Start difference. First operand 12155 states and 20245 transitions. Second operand has 4 states, 4 states have (on average 127.0) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:11,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:11,103 INFO L93 Difference]: Finished difference Result 24027 states and 40019 transitions. [2023-11-29 06:36:11,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:36:11,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 127.0) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 508 [2023-11-29 06:36:11,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:11,114 INFO L225 Difference]: With dead ends: 24027 [2023-11-29 06:36:11,115 INFO L226 Difference]: Without dead ends: 12155 [2023-11-29 06:36:11,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:36:11,123 INFO L413 NwaCegarLoop]: 19694 mSDtfsCounter, 19980 mSDsluCounter, 19693 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19980 SdHoareTripleChecker+Valid, 39387 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:11,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19980 Valid, 39387 Invalid, 1063 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 06:36:11,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12155 states. [2023-11-29 06:36:11,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12155 to 12155. [2023-11-29 06:36:11,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12155 states, 12154 states have (on average 1.6655422083264768) internal successors, (20243), 12154 states have internal predecessors, (20243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:11,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12155 states to 12155 states and 20243 transitions. [2023-11-29 06:36:11,283 INFO L78 Accepts]: Start accepts. Automaton has 12155 states and 20243 transitions. Word has length 508 [2023-11-29 06:36:11,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:11,284 INFO L495 AbstractCegarLoop]: Abstraction has 12155 states and 20243 transitions. [2023-11-29 06:36:11,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.0) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:11,284 INFO L276 IsEmpty]: Start isEmpty. Operand 12155 states and 20243 transitions. [2023-11-29 06:36:11,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-11-29 06:36:11,290 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:11,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:11,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 06:36:11,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 06:36:11,492 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:11,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:11,492 INFO L85 PathProgramCache]: Analyzing trace with hash 741360219, now seen corresponding path program 1 times [2023-11-29 06:36:11,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:11,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356965261] [2023-11-29 06:36:11,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:11,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:11,728 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:36:11,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [866275177] [2023-11-29 06:36:11,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:11,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:11,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:11,744 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:11,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 06:36:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:14,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 2480 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 06:36:14,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:15,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:36:15,196 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:36:15,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:15,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356965261] [2023-11-29 06:36:15,196 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:15,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866275177] [2023-11-29 06:36:15,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866275177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:36:15,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:36:15,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:36:15,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170996076] [2023-11-29 06:36:15,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:36:15,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:36:15,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:15,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:36:15,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:36:15,199 INFO L87 Difference]: Start difference. First operand 12155 states and 20243 transitions. Second operand has 6 states, 6 states have (on average 84.83333333333333) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:16,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:16,731 INFO L93 Difference]: Finished difference Result 24027 states and 40015 transitions. [2023-11-29 06:36:16,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:36:16,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 84.83333333333333) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 509 [2023-11-29 06:36:16,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:16,742 INFO L225 Difference]: With dead ends: 24027 [2023-11-29 06:36:16,742 INFO L226 Difference]: Without dead ends: 12155 [2023-11-29 06:36:16,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:36:16,750 INFO L413 NwaCegarLoop]: 19694 mSDtfsCounter, 39944 mSDsluCounter, 39386 mSDsCounter, 0 mSdLazyCounter, 1588 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39944 SdHoareTripleChecker+Valid, 59080 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:16,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39944 Valid, 59080 Invalid, 1589 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 1588 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 06:36:16,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12155 states. [2023-11-29 06:36:16,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12155 to 12155. [2023-11-29 06:36:16,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12155 states, 12154 states have (on average 1.6654599308869509) internal successors, (20242), 12154 states have internal predecessors, (20242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:16,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12155 states to 12155 states and 20242 transitions. [2023-11-29 06:36:16,906 INFO L78 Accepts]: Start accepts. Automaton has 12155 states and 20242 transitions. Word has length 509 [2023-11-29 06:36:16,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:16,907 INFO L495 AbstractCegarLoop]: Abstraction has 12155 states and 20242 transitions. [2023-11-29 06:36:16,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.83333333333333) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:16,907 INFO L276 IsEmpty]: Start isEmpty. Operand 12155 states and 20242 transitions. [2023-11-29 06:36:16,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2023-11-29 06:36:16,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:16,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:16,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 06:36:17,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 06:36:17,113 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:17,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:17,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1718743129, now seen corresponding path program 1 times [2023-11-29 06:36:17,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:17,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515804873] [2023-11-29 06:36:17,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:17,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:17,327 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:36:17,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [328307207] [2023-11-29 06:36:17,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:17,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:17,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:17,329 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:17,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 06:36:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:20,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 2483 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 06:36:20,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:20,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:36:20,834 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:36:20,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:20,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515804873] [2023-11-29 06:36:20,834 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:20,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328307207] [2023-11-29 06:36:20,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328307207] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:36:20,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:36:20,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:36:20,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190876863] [2023-11-29 06:36:20,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:36:20,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:36:20,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:20,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:36:20,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:36:20,837 INFO L87 Difference]: Start difference. First operand 12155 states and 20242 transitions. Second operand has 6 states, 6 states have (on average 85.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:22,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:22,227 INFO L93 Difference]: Finished difference Result 24027 states and 40013 transitions. [2023-11-29 06:36:22,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:36:22,227 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 85.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 510 [2023-11-29 06:36:22,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:22,237 INFO L225 Difference]: With dead ends: 24027 [2023-11-29 06:36:22,237 INFO L226 Difference]: Without dead ends: 12155 [2023-11-29 06:36:22,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:36:22,244 INFO L413 NwaCegarLoop]: 19694 mSDtfsCounter, 20094 mSDsluCounter, 39386 mSDsCounter, 0 mSdLazyCounter, 1586 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20094 SdHoareTripleChecker+Valid, 59080 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:22,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20094 Valid, 59080 Invalid, 1587 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1586 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 06:36:22,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12155 states. [2023-11-29 06:36:22,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12155 to 12155. [2023-11-29 06:36:22,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12155 states, 12154 states have (on average 1.6653776534474247) internal successors, (20241), 12154 states have internal predecessors, (20241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:22,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12155 states to 12155 states and 20241 transitions. [2023-11-29 06:36:22,360 INFO L78 Accepts]: Start accepts. Automaton has 12155 states and 20241 transitions. Word has length 510 [2023-11-29 06:36:22,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:22,361 INFO L495 AbstractCegarLoop]: Abstraction has 12155 states and 20241 transitions. [2023-11-29 06:36:22,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:22,361 INFO L276 IsEmpty]: Start isEmpty. Operand 12155 states and 20241 transitions. [2023-11-29 06:36:22,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2023-11-29 06:36:22,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:22,364 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:22,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 06:36:22,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:22,565 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:22,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:22,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1901064041, now seen corresponding path program 1 times [2023-11-29 06:36:22,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:22,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843044799] [2023-11-29 06:36:22,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:22,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:22,723 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:36:22,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1392578103] [2023-11-29 06:36:22,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:22,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:22,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:22,725 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:22,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 06:36:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:25,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 2484 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 06:36:25,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:26,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:36:26,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:36:26,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:26,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843044799] [2023-11-29 06:36:26,555 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:26,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392578103] [2023-11-29 06:36:26,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392578103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:36:26,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:36:26,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:36:26,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337286561] [2023-11-29 06:36:26,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:36:26,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:36:26,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:26,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:36:26,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:36:26,557 INFO L87 Difference]: Start difference. First operand 12155 states and 20241 transitions. Second operand has 4 states, 4 states have (on average 127.5) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:27,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:27,010 INFO L93 Difference]: Finished difference Result 24027 states and 40011 transitions. [2023-11-29 06:36:27,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:36:27,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 127.5) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 510 [2023-11-29 06:36:27,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:27,019 INFO L225 Difference]: With dead ends: 24027 [2023-11-29 06:36:27,019 INFO L226 Difference]: Without dead ends: 12155 [2023-11-29 06:36:27,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:36:27,027 INFO L413 NwaCegarLoop]: 20078 mSDtfsCounter, 19927 mSDsluCounter, 20077 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19927 SdHoareTripleChecker+Valid, 40155 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:27,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19927 Valid, 40155 Invalid, 287 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:36:27,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12155 states. [2023-11-29 06:36:27,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12155 to 12155. [2023-11-29 06:36:27,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12155 states, 12154 states have (on average 1.6652130985683726) internal successors, (20239), 12154 states have internal predecessors, (20239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:27,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12155 states to 12155 states and 20239 transitions. [2023-11-29 06:36:27,160 INFO L78 Accepts]: Start accepts. Automaton has 12155 states and 20239 transitions. Word has length 510 [2023-11-29 06:36:27,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:27,161 INFO L495 AbstractCegarLoop]: Abstraction has 12155 states and 20239 transitions. [2023-11-29 06:36:27,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.5) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:27,161 INFO L276 IsEmpty]: Start isEmpty. Operand 12155 states and 20239 transitions. [2023-11-29 06:36:27,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2023-11-29 06:36:27,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:27,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:27,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 06:36:27,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:27,364 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:27,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:27,365 INFO L85 PathProgramCache]: Analyzing trace with hash -465412941, now seen corresponding path program 1 times [2023-11-29 06:36:27,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:27,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83531971] [2023-11-29 06:36:27,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:27,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:27,561 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:36:27,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [910123736] [2023-11-29 06:36:27,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:27,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:27,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:27,563 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:27,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 06:36:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:30,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 2488 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 06:36:30,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:30,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:36:30,975 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:36:30,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:30,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83531971] [2023-11-29 06:36:30,975 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:30,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910123736] [2023-11-29 06:36:30,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910123736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:36:30,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:36:30,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:36:30,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358720747] [2023-11-29 06:36:30,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:36:30,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:36:30,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:30,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:36:30,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:36:30,978 INFO L87 Difference]: Start difference. First operand 12155 states and 20239 transitions. Second operand has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 5 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:31,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:31,619 INFO L93 Difference]: Finished difference Result 24027 states and 40007 transitions. [2023-11-29 06:36:31,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:36:31,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 5 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 511 [2023-11-29 06:36:31,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:31,628 INFO L225 Difference]: With dead ends: 24027 [2023-11-29 06:36:31,628 INFO L226 Difference]: Without dead ends: 12155 [2023-11-29 06:36:31,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:36:31,635 INFO L413 NwaCegarLoop]: 20078 mSDtfsCounter, 20094 mSDsluCounter, 40154 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20094 SdHoareTripleChecker+Valid, 60232 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:31,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20094 Valid, 60232 Invalid, 425 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:36:31,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12155 states. [2023-11-29 06:36:31,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12155 to 12155. [2023-11-29 06:36:31,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12155 states, 12154 states have (on average 1.6651308211288465) internal successors, (20238), 12154 states have internal predecessors, (20238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:31,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12155 states to 12155 states and 20238 transitions. [2023-11-29 06:36:31,743 INFO L78 Accepts]: Start accepts. Automaton has 12155 states and 20238 transitions. Word has length 511 [2023-11-29 06:36:31,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:31,743 INFO L495 AbstractCegarLoop]: Abstraction has 12155 states and 20238 transitions. [2023-11-29 06:36:31,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 5 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:31,743 INFO L276 IsEmpty]: Start isEmpty. Operand 12155 states and 20238 transitions. [2023-11-29 06:36:31,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2023-11-29 06:36:31,746 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:31,746 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:31,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 06:36:31,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:31,947 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:31,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:31,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1172107743, now seen corresponding path program 1 times [2023-11-29 06:36:31,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:31,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201893248] [2023-11-29 06:36:31,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:31,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:32,116 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:36:32,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116456770] [2023-11-29 06:36:32,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:32,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:32,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:32,117 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:32,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 06:36:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:34,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 2491 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 06:36:34,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:35,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:36:35,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:36:35,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:35,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201893248] [2023-11-29 06:36:35,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:35,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116456770] [2023-11-29 06:36:35,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116456770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:36:35,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:36:35,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:36:35,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975080726] [2023-11-29 06:36:35,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:36:35,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:36:35,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:35,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:36:35,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:36:35,502 INFO L87 Difference]: Start difference. First operand 12155 states and 20238 transitions. Second operand has 6 states, 6 states have (on average 85.33333333333333) internal successors, (512), 5 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:36,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:36,169 INFO L93 Difference]: Finished difference Result 24027 states and 40005 transitions. [2023-11-29 06:36:36,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:36:36,170 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 85.33333333333333) internal successors, (512), 5 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 512 [2023-11-29 06:36:36,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:36,178 INFO L225 Difference]: With dead ends: 24027 [2023-11-29 06:36:36,178 INFO L226 Difference]: Without dead ends: 12155 [2023-11-29 06:36:36,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:36:36,184 INFO L413 NwaCegarLoop]: 20078 mSDtfsCounter, 39883 mSDsluCounter, 40154 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39883 SdHoareTripleChecker+Valid, 60232 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:36,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39883 Valid, 60232 Invalid, 423 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 06:36:36,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12155 states. [2023-11-29 06:36:36,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12155 to 12155. [2023-11-29 06:36:36,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12155 states, 12154 states have (on average 1.6650485436893203) internal successors, (20237), 12154 states have internal predecessors, (20237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:36,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12155 states to 12155 states and 20237 transitions. [2023-11-29 06:36:36,296 INFO L78 Accepts]: Start accepts. Automaton has 12155 states and 20237 transitions. Word has length 512 [2023-11-29 06:36:36,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:36,297 INFO L495 AbstractCegarLoop]: Abstraction has 12155 states and 20237 transitions. [2023-11-29 06:36:36,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.33333333333333) internal successors, (512), 5 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:36,297 INFO L276 IsEmpty]: Start isEmpty. Operand 12155 states and 20237 transitions. [2023-11-29 06:36:36,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2023-11-29 06:36:36,300 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:36,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:36,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-29 06:36:36,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:36,501 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:36,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:36,501 INFO L85 PathProgramCache]: Analyzing trace with hash 394650207, now seen corresponding path program 1 times [2023-11-29 06:36:36,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:36:36,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706793766] [2023-11-29 06:36:36,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:36,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:36:36,693 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:36:36,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1479138834] [2023-11-29 06:36:36,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:36,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:36:36,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:36:36,695 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:36:36,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 06:36:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:39,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 2492 conjuncts, 133 conjunts are in the unsatisfiable core [2023-11-29 06:36:39,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:41,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:36:41,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:36:41,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:36:41,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706793766] [2023-11-29 06:36:41,379 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:36:41,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479138834] [2023-11-29 06:36:41,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479138834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:36:41,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:36:41,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2023-11-29 06:36:41,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829724584] [2023-11-29 06:36:41,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:36:41,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 06:36:41,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:36:41,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 06:36:41,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=813, Unknown=0, NotChecked=0, Total=930 [2023-11-29 06:36:41,382 INFO L87 Difference]: Start difference. First operand 12155 states and 20237 transitions. Second operand has 31 states, 31 states have (on average 16.516129032258064) internal successors, (512), 30 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:40,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:40:40,944 INFO L93 Difference]: Finished difference Result 1160987 states and 1932149 transitions. [2023-11-29 06:40:40,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1594 states. [2023-11-29 06:40:40,944 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 16.516129032258064) internal successors, (512), 30 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 512 [2023-11-29 06:40:40,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:40:41,692 INFO L225 Difference]: With dead ends: 1160987 [2023-11-29 06:40:41,692 INFO L226 Difference]: Without dead ends: 1149115 [2023-11-29 06:40:42,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2099 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 1617 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276284 ImplicationChecksByTransitivity, 59.7s TimeCoverageRelationStatistics Valid=97745, Invalid=2521797, Unknown=0, NotChecked=0, Total=2619542 [2023-11-29 06:40:42,238 INFO L413 NwaCegarLoop]: 19826 mSDtfsCounter, 7378199 mSDsluCounter, 530845 mSDsCounter, 0 mSdLazyCounter, 31549 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7378199 SdHoareTripleChecker+Valid, 550671 SdHoareTripleChecker+Invalid, 31586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.5s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 31549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:40:42,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7378199 Valid, 550671 Invalid, 31586 Unknown, 0 Unchecked, 7.5s Time], IncrementalHoareTripleChecker [37 Valid, 31549 Invalid, 0 Unknown, 0 Unchecked, 22.8s Time] [2023-11-29 06:40:42,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149115 states. [2023-11-29 06:40:45,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149115 to 12260. [2023-11-29 06:40:45,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12260 states, 12259 states have (on average 1.6644913940778203) internal successors, (20405), 12259 states have internal predecessors, (20405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:45,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12260 states to 12260 states and 20405 transitions. [2023-11-29 06:40:45,413 INFO L78 Accepts]: Start accepts. Automaton has 12260 states and 20405 transitions. Word has length 512 [2023-11-29 06:40:45,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:40:45,413 INFO L495 AbstractCegarLoop]: Abstraction has 12260 states and 20405 transitions. [2023-11-29 06:40:45,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 16.516129032258064) internal successors, (512), 30 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:40:45,413 INFO L276 IsEmpty]: Start isEmpty. Operand 12260 states and 20405 transitions. [2023-11-29 06:40:45,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2023-11-29 06:40:45,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:40:45,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:40:45,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-29 06:40:45,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:45,618 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:40:45,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:40:45,618 INFO L85 PathProgramCache]: Analyzing trace with hash -887627965, now seen corresponding path program 1 times [2023-11-29 06:40:45,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:40:45,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344724019] [2023-11-29 06:40:45,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:45,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:40:45,788 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:40:45,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1508652560] [2023-11-29 06:40:45,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:40:45,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:40:45,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:40:45,789 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:40:45,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 06:40:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:40:48,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 2493 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 06:40:48,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:40:50,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:40:50,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:40:50,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:40:50,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344724019] [2023-11-29 06:40:50,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:40:50,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508652560] [2023-11-29 06:40:50,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508652560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:40:50,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:40:50,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 06:40:50,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299402226] [2023-11-29 06:40:50,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:40:50,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:40:50,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:40:50,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:40:50,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:40:50,287 INFO L87 Difference]: Start difference. First operand 12260 states and 20405 transitions. Second operand has 10 states, 10 states have (on average 51.2) internal successors, (512), 9 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:11,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:41:11,761 INFO L93 Difference]: Finished difference Result 49319 states and 82040 transitions. [2023-11-29 06:41:11,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 06:41:11,762 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 51.2) internal successors, (512), 9 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 512 [2023-11-29 06:41:11,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:41:11,782 INFO L225 Difference]: With dead ends: 49319 [2023-11-29 06:41:11,782 INFO L226 Difference]: Without dead ends: 37342 [2023-11-29 06:41:11,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2023-11-29 06:41:11,789 INFO L413 NwaCegarLoop]: 18701 mSDtfsCounter, 119177 mSDsluCounter, 127469 mSDsCounter, 0 mSdLazyCounter, 17986 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119177 SdHoareTripleChecker+Valid, 146170 SdHoareTripleChecker+Invalid, 17987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:41:11,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119177 Valid, 146170 Invalid, 17987 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [1 Valid, 17986 Invalid, 0 Unknown, 0 Unchecked, 19.7s Time] [2023-11-29 06:41:11,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37342 states. [2023-11-29 06:41:11,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37342 to 12540. [2023-11-29 06:41:11,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12540 states, 12539 states have (on average 1.663609538240689) internal successors, (20860), 12539 states have internal predecessors, (20860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:11,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12540 states to 12540 states and 20860 transitions. [2023-11-29 06:41:11,968 INFO L78 Accepts]: Start accepts. Automaton has 12540 states and 20860 transitions. Word has length 512 [2023-11-29 06:41:11,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:41:11,969 INFO L495 AbstractCegarLoop]: Abstraction has 12540 states and 20860 transitions. [2023-11-29 06:41:11,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 51.2) internal successors, (512), 9 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:11,969 INFO L276 IsEmpty]: Start isEmpty. Operand 12540 states and 20860 transitions. [2023-11-29 06:41:11,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2023-11-29 06:41:11,972 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:41:11,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:41:11,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 06:41:12,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:12,173 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:41:12,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:41:12,174 INFO L85 PathProgramCache]: Analyzing trace with hash -48111855, now seen corresponding path program 1 times [2023-11-29 06:41:12,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:41:12,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676681052] [2023-11-29 06:41:12,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:12,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:41:12,337 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:41:12,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376270120] [2023-11-29 06:41:12,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:12,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:12,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:41:12,339 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:41:12,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 06:41:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:41:15,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 2491 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:41:15,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:41:15,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:15,118 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:41:15,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:41:15,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676681052] [2023-11-29 06:41:15,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:41:15,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376270120] [2023-11-29 06:41:15,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376270120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:41:15,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:41:15,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:41:15,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304090323] [2023-11-29 06:41:15,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:41:15,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:41:15,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:41:15,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:41:15,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:41:15,121 INFO L87 Difference]: Start difference. First operand 12540 states and 20860 transitions. Second operand has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:15,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:41:15,396 INFO L93 Difference]: Finished difference Result 24819 states and 41283 transitions. [2023-11-29 06:41:15,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:41:15,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 512 [2023-11-29 06:41:15,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:41:15,407 INFO L225 Difference]: With dead ends: 24819 [2023-11-29 06:41:15,407 INFO L226 Difference]: Without dead ends: 12562 [2023-11-29 06:41:15,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 509 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:41:15,414 INFO L413 NwaCegarLoop]: 20217 mSDtfsCounter, 12 mSDsluCounter, 40424 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 60641 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:41:15,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 60641 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:41:15,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12562 states. [2023-11-29 06:41:15,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12562 to 12544. [2023-11-29 06:41:15,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12544 states, 12543 states have (on average 1.6633979111855217) internal successors, (20864), 12543 states have internal predecessors, (20864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:15,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12544 states to 12544 states and 20864 transitions. [2023-11-29 06:41:15,548 INFO L78 Accepts]: Start accepts. Automaton has 12544 states and 20864 transitions. Word has length 512 [2023-11-29 06:41:15,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:41:15,548 INFO L495 AbstractCegarLoop]: Abstraction has 12544 states and 20864 transitions. [2023-11-29 06:41:15,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:15,549 INFO L276 IsEmpty]: Start isEmpty. Operand 12544 states and 20864 transitions. [2023-11-29 06:41:15,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2023-11-29 06:41:15,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:41:15,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:41:15,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-29 06:41:15,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 06:41:15,753 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:41:15,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:41:15,753 INFO L85 PathProgramCache]: Analyzing trace with hash 778260241, now seen corresponding path program 1 times [2023-11-29 06:41:15,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:41:15,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668055402] [2023-11-29 06:41:15,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:15,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:41:15,931 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:41:15,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [764590514] [2023-11-29 06:41:15,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:15,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:15,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:41:15,933 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:41:15,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 06:41:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:41:18,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 2491 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:41:18,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:41:18,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:18,842 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:41:18,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:41:18,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668055402] [2023-11-29 06:41:18,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:41:18,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764590514] [2023-11-29 06:41:18,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764590514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:41:18,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:41:18,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:41:18,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821010588] [2023-11-29 06:41:18,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:41:18,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:41:18,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:41:18,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:41:18,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:41:18,845 INFO L87 Difference]: Start difference. First operand 12544 states and 20864 transitions. Second operand has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:19,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:41:19,153 INFO L93 Difference]: Finished difference Result 24823 states and 41283 transitions. [2023-11-29 06:41:19,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:41:19,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 512 [2023-11-29 06:41:19,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:41:19,163 INFO L225 Difference]: With dead ends: 24823 [2023-11-29 06:41:19,163 INFO L226 Difference]: Without dead ends: 12562 [2023-11-29 06:41:19,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 509 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:41:19,170 INFO L413 NwaCegarLoop]: 20217 mSDtfsCounter, 12 mSDsluCounter, 40424 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 60641 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:41:19,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 60641 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:41:19,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12562 states. [2023-11-29 06:41:19,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12562 to 12546. [2023-11-29 06:41:19,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12546 states, 12545 states have (on average 1.6632921482662415) internal successors, (20866), 12545 states have internal predecessors, (20866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:19,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12546 states to 12546 states and 20866 transitions. [2023-11-29 06:41:19,305 INFO L78 Accepts]: Start accepts. Automaton has 12546 states and 20866 transitions. Word has length 512 [2023-11-29 06:41:19,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:41:19,306 INFO L495 AbstractCegarLoop]: Abstraction has 12546 states and 20866 transitions. [2023-11-29 06:41:19,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:19,306 INFO L276 IsEmpty]: Start isEmpty. Operand 12546 states and 20866 transitions. [2023-11-29 06:41:19,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2023-11-29 06:41:19,310 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:41:19,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:41:19,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 06:41:19,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:19,511 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:41:19,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:41:19,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1770056471, now seen corresponding path program 1 times [2023-11-29 06:41:19,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:41:19,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534984952] [2023-11-29 06:41:19,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:19,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:41:19,692 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:41:19,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1615721843] [2023-11-29 06:41:19,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:19,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:19,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:41:19,694 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:41:19,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 06:41:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:41:22,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 2493 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-29 06:41:22,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:41:24,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:24,264 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:41:24,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:41:24,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534984952] [2023-11-29 06:41:24,265 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:41:24,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615721843] [2023-11-29 06:41:24,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615721843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:41:24,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:41:24,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 06:41:24,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110810711] [2023-11-29 06:41:24,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:41:24,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:41:24,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:41:24,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:41:24,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:41:24,267 INFO L87 Difference]: Start difference. First operand 12546 states and 20866 transitions. Second operand has 12 states, 12 states have (on average 42.666666666666664) internal successors, (512), 11 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:45,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:41:45,772 INFO L93 Difference]: Finished difference Result 37080 states and 61666 transitions. [2023-11-29 06:41:45,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 06:41:45,773 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 42.666666666666664) internal successors, (512), 11 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 512 [2023-11-29 06:41:45,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:41:45,788 INFO L225 Difference]: With dead ends: 37080 [2023-11-29 06:41:45,788 INFO L226 Difference]: Without dead ends: 24817 [2023-11-29 06:41:45,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2023-11-29 06:41:45,795 INFO L413 NwaCegarLoop]: 17239 mSDtfsCounter, 98368 mSDsluCounter, 135367 mSDsCounter, 0 mSdLazyCounter, 31733 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98368 SdHoareTripleChecker+Valid, 152606 SdHoareTripleChecker+Invalid, 31737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:41:45,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98368 Valid, 152606 Invalid, 31737 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [4 Valid, 31733 Invalid, 0 Unknown, 0 Unchecked, 19.9s Time] [2023-11-29 06:41:45,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24817 states. [2023-11-29 06:41:45,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24817 to 12552. [2023-11-29 06:41:45,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12552 states, 12551 states have (on average 1.6631344116006692) internal successors, (20874), 12551 states have internal predecessors, (20874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:45,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12552 states to 12552 states and 20874 transitions. [2023-11-29 06:41:45,956 INFO L78 Accepts]: Start accepts. Automaton has 12552 states and 20874 transitions. Word has length 512 [2023-11-29 06:41:45,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:41:45,956 INFO L495 AbstractCegarLoop]: Abstraction has 12552 states and 20874 transitions. [2023-11-29 06:41:45,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 42.666666666666664) internal successors, (512), 11 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:45,956 INFO L276 IsEmpty]: Start isEmpty. Operand 12552 states and 20874 transitions. [2023-11-29 06:41:45,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2023-11-29 06:41:45,959 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:41:45,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:41:45,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 06:41:46,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:46,160 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:41:46,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:41:46,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1653922289, now seen corresponding path program 1 times [2023-11-29 06:41:46,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:41:46,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445753838] [2023-11-29 06:41:46,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:46,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:41:46,332 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:41:46,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1753184210] [2023-11-29 06:41:46,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:46,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:46,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:41:46,333 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:41:46,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 06:41:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:41:49,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 2495 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:41:49,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:41:49,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:49,496 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:41:49,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:41:49,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445753838] [2023-11-29 06:41:49,496 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:41:49,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753184210] [2023-11-29 06:41:49,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753184210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:41:49,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:41:49,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:41:49,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871037440] [2023-11-29 06:41:49,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:41:49,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:41:49,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:41:49,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:41:49,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:41:49,498 INFO L87 Difference]: Start difference. First operand 12552 states and 20874 transitions. Second operand has 4 states, 4 states have (on average 128.25) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:49,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:41:49,783 INFO L93 Difference]: Finished difference Result 24833 states and 41293 transitions. [2023-11-29 06:41:49,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:41:49,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 128.25) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 513 [2023-11-29 06:41:49,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:41:49,793 INFO L225 Difference]: With dead ends: 24833 [2023-11-29 06:41:49,793 INFO L226 Difference]: Without dead ends: 12564 [2023-11-29 06:41:49,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:41:49,799 INFO L413 NwaCegarLoop]: 20202 mSDtfsCounter, 19738 mSDsluCounter, 20193 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19738 SdHoareTripleChecker+Valid, 40395 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:41:49,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19738 Valid, 40395 Invalid, 44 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:41:49,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12564 states. [2023-11-29 06:41:49,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12564 to 12556. [2023-11-29 06:41:49,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12556 states, 12555 states have (on average 1.6629231381919554) internal successors, (20878), 12555 states have internal predecessors, (20878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:50,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12556 states to 12556 states and 20878 transitions. [2023-11-29 06:41:50,001 INFO L78 Accepts]: Start accepts. Automaton has 12556 states and 20878 transitions. Word has length 513 [2023-11-29 06:41:50,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:41:50,001 INFO L495 AbstractCegarLoop]: Abstraction has 12556 states and 20878 transitions. [2023-11-29 06:41:50,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.25) internal successors, (513), 3 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:50,002 INFO L276 IsEmpty]: Start isEmpty. Operand 12556 states and 20878 transitions. [2023-11-29 06:41:50,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2023-11-29 06:41:50,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:41:50,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:41:50,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 06:41:50,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:50,207 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:41:50,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:41:50,208 INFO L85 PathProgramCache]: Analyzing trace with hash -19141515, now seen corresponding path program 1 times [2023-11-29 06:41:50,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:41:50,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461235071] [2023-11-29 06:41:50,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:50,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:41:50,367 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:41:50,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1165255632] [2023-11-29 06:41:50,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:50,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:50,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:41:50,368 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:41:50,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 06:41:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:41:53,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 2496 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 06:41:53,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:41:53,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:53,286 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:41:53,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:41:53,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461235071] [2023-11-29 06:41:53,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:41:53,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165255632] [2023-11-29 06:41:53,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165255632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:41:53,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:41:53,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 06:41:53,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948071090] [2023-11-29 06:41:53,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:41:53,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:41:53,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:41:53,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:41:53,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:41:53,288 INFO L87 Difference]: Start difference. First operand 12556 states and 20878 transitions. Second operand has 8 states, 8 states have (on average 64.125) internal successors, (513), 8 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:54,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:41:54,497 INFO L93 Difference]: Finished difference Result 49710 states and 82632 transitions. [2023-11-29 06:41:54,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:41:54,498 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 64.125) internal successors, (513), 8 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 513 [2023-11-29 06:41:54,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:41:54,524 INFO L225 Difference]: With dead ends: 49710 [2023-11-29 06:41:54,524 INFO L226 Difference]: Without dead ends: 37437 [2023-11-29 06:41:54,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 509 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:41:54,537 INFO L413 NwaCegarLoop]: 20580 mSDtfsCounter, 98754 mSDsluCounter, 122213 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98754 SdHoareTripleChecker+Valid, 142793 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:41:54,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98754 Valid, 142793 Invalid, 278 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:41:54,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37437 states. [2023-11-29 06:41:54,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37437 to 12718. [2023-11-29 06:41:54,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12718 states, 12717 states have (on average 1.6622631123692695) internal successors, (21139), 12717 states have internal predecessors, (21139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:54,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12718 states to 12718 states and 21139 transitions. [2023-11-29 06:41:54,747 INFO L78 Accepts]: Start accepts. Automaton has 12718 states and 21139 transitions. Word has length 513 [2023-11-29 06:41:54,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:41:54,747 INFO L495 AbstractCegarLoop]: Abstraction has 12718 states and 21139 transitions. [2023-11-29 06:41:54,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 64.125) internal successors, (513), 8 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:54,748 INFO L276 IsEmpty]: Start isEmpty. Operand 12718 states and 21139 transitions. [2023-11-29 06:41:54,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-11-29 06:41:54,751 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:41:54,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:41:54,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 06:41:54,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:54,952 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:41:54,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:41:54,952 INFO L85 PathProgramCache]: Analyzing trace with hash -16946049, now seen corresponding path program 1 times [2023-11-29 06:41:54,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:41:54,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628768262] [2023-11-29 06:41:54,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:54,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:41:55,114 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:41:55,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407499836] [2023-11-29 06:41:55,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:55,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:55,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:41:55,115 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:41:55,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 06:41:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:41:57,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 2499 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:41:57,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:41:58,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:41:58,057 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:41:58,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:41:58,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628768262] [2023-11-29 06:41:58,057 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:41:58,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407499836] [2023-11-29 06:41:58,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407499836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:41:58,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:41:58,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:41:58,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654492831] [2023-11-29 06:41:58,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:41:58,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:41:58,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:41:58,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:41:58,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:41:58,060 INFO L87 Difference]: Start difference. First operand 12718 states and 21139 transitions. Second operand has 6 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:58,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:41:58,795 INFO L93 Difference]: Finished difference Result 38114 states and 63332 transitions. [2023-11-29 06:41:58,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:41:58,796 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 514 [2023-11-29 06:41:58,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:41:58,816 INFO L225 Difference]: With dead ends: 38114 [2023-11-29 06:41:58,816 INFO L226 Difference]: Without dead ends: 25676 [2023-11-29 06:41:58,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:41:58,826 INFO L413 NwaCegarLoop]: 20584 mSDtfsCounter, 118420 mSDsluCounter, 41073 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118420 SdHoareTripleChecker+Valid, 61657 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:41:58,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118420 Valid, 61657 Invalid, 103 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:41:58,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25676 states. [2023-11-29 06:41:58,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25676 to 12857. [2023-11-29 06:41:58,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12857 states, 12856 states have (on average 1.6621032980709396) internal successors, (21368), 12856 states have internal predecessors, (21368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:59,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12857 states to 12857 states and 21368 transitions. [2023-11-29 06:41:59,000 INFO L78 Accepts]: Start accepts. Automaton has 12857 states and 21368 transitions. Word has length 514 [2023-11-29 06:41:59,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:41:59,001 INFO L495 AbstractCegarLoop]: Abstraction has 12857 states and 21368 transitions. [2023-11-29 06:41:59,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:41:59,001 INFO L276 IsEmpty]: Start isEmpty. Operand 12857 states and 21368 transitions. [2023-11-29 06:41:59,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-11-29 06:41:59,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:41:59,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:41:59,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 06:41:59,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:59,205 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:41:59,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:41:59,206 INFO L85 PathProgramCache]: Analyzing trace with hash 189611033, now seen corresponding path program 1 times [2023-11-29 06:41:59,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:41:59,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093077338] [2023-11-29 06:41:59,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:59,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:41:59,362 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:41:59,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811135630] [2023-11-29 06:41:59,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:41:59,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:41:59,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:41:59,363 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:41:59,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 06:42:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:01,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 2499 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 06:42:02,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:42:02,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:02,050 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:42:02,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:42:02,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093077338] [2023-11-29 06:42:02,050 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:42:02,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811135630] [2023-11-29 06:42:02,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811135630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:42:02,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:42:02,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:42:02,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481290421] [2023-11-29 06:42:02,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:42:02,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:42:02,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:42:02,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:42:02,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:42:02,053 INFO L87 Difference]: Start difference. First operand 12857 states and 21368 transitions. Second operand has 7 states, 7 states have (on average 73.42857142857143) internal successors, (514), 7 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:02,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:42:02,733 INFO L93 Difference]: Finished difference Result 38040 states and 63208 transitions. [2023-11-29 06:42:02,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:42:02,734 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 73.42857142857143) internal successors, (514), 7 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 514 [2023-11-29 06:42:02,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:42:02,753 INFO L225 Difference]: With dead ends: 38040 [2023-11-29 06:42:02,753 INFO L226 Difference]: Without dead ends: 25464 [2023-11-29 06:42:02,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 509 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:42:02,762 INFO L413 NwaCegarLoop]: 20602 mSDtfsCounter, 19764 mSDsluCounter, 102600 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19764 SdHoareTripleChecker+Valid, 123202 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:42:02,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19764 Valid, 123202 Invalid, 76 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:42:02,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25464 states. [2023-11-29 06:42:02,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25464 to 12875. [2023-11-29 06:42:02,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12875 states, 12874 states have (on average 1.6614105949976696) internal successors, (21389), 12874 states have internal predecessors, (21389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:02,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12875 states to 12875 states and 21389 transitions. [2023-11-29 06:42:02,932 INFO L78 Accepts]: Start accepts. Automaton has 12875 states and 21389 transitions. Word has length 514 [2023-11-29 06:42:02,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:42:02,932 INFO L495 AbstractCegarLoop]: Abstraction has 12875 states and 21389 transitions. [2023-11-29 06:42:02,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.42857142857143) internal successors, (514), 7 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:02,933 INFO L276 IsEmpty]: Start isEmpty. Operand 12875 states and 21389 transitions. [2023-11-29 06:42:02,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-11-29 06:42:02,936 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:42:02,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:42:02,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 06:42:03,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 06:42:03,137 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:42:03,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:42:03,137 INFO L85 PathProgramCache]: Analyzing trace with hash 345438203, now seen corresponding path program 1 times [2023-11-29 06:42:03,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:42:03,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626243141] [2023-11-29 06:42:03,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:42:03,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:42:03,292 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:42:03,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1257829169] [2023-11-29 06:42:03,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:42:03,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:42:03,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:42:03,293 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:42:03,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 06:42:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:06,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 2499 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 06:42:06,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:42:07,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:07,462 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:42:07,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:42:07,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626243141] [2023-11-29 06:42:07,462 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:42:07,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257829169] [2023-11-29 06:42:07,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257829169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:42:07,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:42:07,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 06:42:07,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666868779] [2023-11-29 06:42:07,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:42:07,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 06:42:07,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:42:07,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 06:42:07,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:42:07,465 INFO L87 Difference]: Start difference. First operand 12875 states and 21389 transitions. Second operand has 13 states, 13 states have (on average 39.53846153846154) internal successors, (514), 12 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:24,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:42:24,760 INFO L93 Difference]: Finished difference Result 50350 states and 83657 transitions. [2023-11-29 06:42:24,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 06:42:24,761 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 39.53846153846154) internal successors, (514), 12 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 514 [2023-11-29 06:42:24,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:42:24,788 INFO L225 Difference]: With dead ends: 50350 [2023-11-29 06:42:24,788 INFO L226 Difference]: Without dead ends: 37758 [2023-11-29 06:42:24,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=219, Invalid=837, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 06:42:24,802 INFO L413 NwaCegarLoop]: 18389 mSDtfsCounter, 157096 mSDsluCounter, 178731 mSDsCounter, 0 mSdLazyCounter, 24811 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157096 SdHoareTripleChecker+Valid, 197120 SdHoareTripleChecker+Invalid, 24812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.7s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:42:24,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157096 Valid, 197120 Invalid, 24812 Unknown, 0 Unchecked, 0.7s Time], IncrementalHoareTripleChecker [1 Valid, 24811 Invalid, 0 Unknown, 0 Unchecked, 15.3s Time] [2023-11-29 06:42:24,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37758 states. [2023-11-29 06:42:25,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37758 to 12880. [2023-11-29 06:42:25,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12880 states, 12879 states have (on average 1.6611538162900847) internal successors, (21394), 12879 states have internal predecessors, (21394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:25,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12880 states to 12880 states and 21394 transitions. [2023-11-29 06:42:25,031 INFO L78 Accepts]: Start accepts. Automaton has 12880 states and 21394 transitions. Word has length 514 [2023-11-29 06:42:25,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:42:25,031 INFO L495 AbstractCegarLoop]: Abstraction has 12880 states and 21394 transitions. [2023-11-29 06:42:25,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 39.53846153846154) internal successors, (514), 12 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:25,031 INFO L276 IsEmpty]: Start isEmpty. Operand 12880 states and 21394 transitions. [2023-11-29 06:42:25,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-11-29 06:42:25,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:42:25,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:42:25,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 06:42:25,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 06:42:25,238 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:42:25,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:42:25,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1049536285, now seen corresponding path program 1 times [2023-11-29 06:42:25,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:42:25,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607292829] [2023-11-29 06:42:25,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:42:25,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:42:25,396 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:42:25,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [734812710] [2023-11-29 06:42:25,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:42:25,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:42:25,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:42:25,397 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:42:25,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 06:42:28,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:28,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 2500 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 06:42:28,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:42:29,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:29,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:42:29,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:42:29,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607292829] [2023-11-29 06:42:29,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:42:29,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734812710] [2023-11-29 06:42:29,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734812710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:42:29,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:42:29,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 06:42:29,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333813462] [2023-11-29 06:42:29,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:42:29,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:42:29,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:42:29,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:42:29,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:42:29,320 INFO L87 Difference]: Start difference. First operand 12880 states and 21394 transitions. Second operand has 9 states, 9 states have (on average 57.111111111111114) internal successors, (514), 9 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:46,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:42:46,431 INFO L93 Difference]: Finished difference Result 50774 states and 84130 transitions. [2023-11-29 06:42:46,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:42:46,431 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 57.111111111111114) internal successors, (514), 9 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 514 [2023-11-29 06:42:46,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:42:46,459 INFO L225 Difference]: With dead ends: 50774 [2023-11-29 06:42:46,459 INFO L226 Difference]: Without dead ends: 38177 [2023-11-29 06:42:46,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 509 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:42:46,472 INFO L413 NwaCegarLoop]: 37208 mSDtfsCounter, 95072 mSDsluCounter, 128818 mSDsCounter, 0 mSdLazyCounter, 16323 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95072 SdHoareTripleChecker+Valid, 166026 SdHoareTripleChecker+Invalid, 16833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 16323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:42:46,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95072 Valid, 166026 Invalid, 16833 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [510 Valid, 16323 Invalid, 0 Unknown, 0 Unchecked, 15.6s Time] [2023-11-29 06:42:46,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38177 states. [2023-11-29 06:42:46,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38177 to 25038. [2023-11-29 06:42:46,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25038 states, 25037 states have (on average 1.654391500579143) internal successors, (41421), 25037 states have internal predecessors, (41421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:46,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25038 states to 25038 states and 41421 transitions. [2023-11-29 06:42:46,835 INFO L78 Accepts]: Start accepts. Automaton has 25038 states and 41421 transitions. Word has length 514 [2023-11-29 06:42:46,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:42:46,836 INFO L495 AbstractCegarLoop]: Abstraction has 25038 states and 41421 transitions. [2023-11-29 06:42:46,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 57.111111111111114) internal successors, (514), 9 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:42:46,836 INFO L276 IsEmpty]: Start isEmpty. Operand 25038 states and 41421 transitions. [2023-11-29 06:42:46,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-11-29 06:42:46,839 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:42:46,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:42:46,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 06:42:47,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 06:42:47,040 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:42:47,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:42:47,041 INFO L85 PathProgramCache]: Analyzing trace with hash -819599453, now seen corresponding path program 1 times [2023-11-29 06:42:47,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:42:47,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519893422] [2023-11-29 06:42:47,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:42:47,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:42:47,206 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:42:47,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [200959156] [2023-11-29 06:42:47,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:42:47,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:42:47,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:42:47,207 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:42:47,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 06:42:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:42:49,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 2500 conjuncts, 88 conjunts are in the unsatisfiable core [2023-11-29 06:42:50,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:42:51,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:42:51,749 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:42:51,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:42:51,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519893422] [2023-11-29 06:42:51,750 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:42:51,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200959156] [2023-11-29 06:42:51,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200959156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:42:51,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:42:51,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-11-29 06:42:51,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865673764] [2023-11-29 06:42:51,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:42:51,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 06:42:51,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:42:51,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 06:42:51,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2023-11-29 06:42:51,752 INFO L87 Difference]: Start difference. First operand 25038 states and 41421 transitions. Second operand has 21 states, 21 states have (on average 24.476190476190474) internal successors, (514), 21 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:43:42,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:43:42,107 INFO L93 Difference]: Finished difference Result 417446 states and 690411 transitions. [2023-11-29 06:43:42,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2023-11-29 06:43:42,107 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 24.476190476190474) internal successors, (514), 21 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 514 [2023-11-29 06:43:42,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:43:42,346 INFO L225 Difference]: With dead ends: 417446 [2023-11-29 06:43:42,346 INFO L226 Difference]: Without dead ends: 392766 [2023-11-29 06:43:42,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14626 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=4197, Invalid=32475, Unknown=0, NotChecked=0, Total=36672 [2023-11-29 06:43:42,398 INFO L413 NwaCegarLoop]: 58456 mSDtfsCounter, 886734 mSDsluCounter, 810617 mSDsCounter, 0 mSdLazyCounter, 29551 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886734 SdHoareTripleChecker+Valid, 869073 SdHoareTripleChecker+Invalid, 29608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.9s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 29551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:43:42,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [886734 Valid, 869073 Invalid, 29608 Unknown, 0 Unchecked, 2.9s Time], IncrementalHoareTripleChecker [57 Valid, 29551 Invalid, 0 Unknown, 0 Unchecked, 24.6s Time] [2023-11-29 06:43:42,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392766 states. [2023-11-29 06:43:44,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392766 to 73848. [2023-11-29 06:43:44,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73848 states, 73847 states have (on average 1.6540956301542378) internal successors, (122150), 73847 states have internal predecessors, (122150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:43:44,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73848 states to 73848 states and 122150 transitions. [2023-11-29 06:43:44,676 INFO L78 Accepts]: Start accepts. Automaton has 73848 states and 122150 transitions. Word has length 514 [2023-11-29 06:43:44,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:43:44,677 INFO L495 AbstractCegarLoop]: Abstraction has 73848 states and 122150 transitions. [2023-11-29 06:43:44,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 24.476190476190474) internal successors, (514), 21 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:43:44,677 INFO L276 IsEmpty]: Start isEmpty. Operand 73848 states and 122150 transitions. [2023-11-29 06:43:44,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-11-29 06:43:44,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:43:44,682 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:43:44,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 06:43:44,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 06:43:44,883 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:43:44,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:43:44,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1687498021, now seen corresponding path program 1 times [2023-11-29 06:43:44,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:43:44,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47739902] [2023-11-29 06:43:44,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:43:44,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:43:45,050 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:43:45,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752509625] [2023-11-29 06:43:45,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:43:45,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:43:45,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:43:45,051 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:43:45,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 06:43:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:43:48,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 2501 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 06:43:48,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:43:49,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:43:49,239 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:43:49,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:43:49,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47739902] [2023-11-29 06:43:49,239 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:43:49,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752509625] [2023-11-29 06:43:49,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752509625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:43:49,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:43:49,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 06:43:49,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969992493] [2023-11-29 06:43:49,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:43:49,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:43:49,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:43:49,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:43:49,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:43:49,241 INFO L87 Difference]: Start difference. First operand 73848 states and 122150 transitions. Second operand has 11 states, 11 states have (on average 46.72727272727273) internal successors, (514), 10 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:43:59,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:43:59,771 INFO L93 Difference]: Finished difference Result 201981 states and 333818 transitions. [2023-11-29 06:43:59,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 06:43:59,772 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 46.72727272727273) internal successors, (514), 10 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 514 [2023-11-29 06:43:59,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:43:59,945 INFO L225 Difference]: With dead ends: 201981 [2023-11-29 06:43:59,945 INFO L226 Difference]: Without dead ends: 128491 [2023-11-29 06:43:59,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2023-11-29 06:43:59,965 INFO L413 NwaCegarLoop]: 37632 mSDtfsCounter, 79657 mSDsluCounter, 227606 mSDsCounter, 0 mSdLazyCounter, 16245 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79657 SdHoareTripleChecker+Valid, 265238 SdHoareTripleChecker+Invalid, 16247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.7s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:43:59,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79657 Valid, 265238 Invalid, 16247 Unknown, 0 Unchecked, 0.7s Time], IncrementalHoareTripleChecker [2 Valid, 16245 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-11-29 06:44:00,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128491 states. [2023-11-29 06:44:01,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128491 to 73881. [2023-11-29 06:44:01,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73881 states, 73880 states have (on average 1.6540471034109367) internal successors, (122201), 73880 states have internal predecessors, (122201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:01,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73881 states to 73881 states and 122201 transitions. [2023-11-29 06:44:01,203 INFO L78 Accepts]: Start accepts. Automaton has 73881 states and 122201 transitions. Word has length 514 [2023-11-29 06:44:01,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:44:01,203 INFO L495 AbstractCegarLoop]: Abstraction has 73881 states and 122201 transitions. [2023-11-29 06:44:01,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 46.72727272727273) internal successors, (514), 10 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:01,203 INFO L276 IsEmpty]: Start isEmpty. Operand 73881 states and 122201 transitions. [2023-11-29 06:44:01,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-11-29 06:44:01,209 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:44:01,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:44:01,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 06:44:01,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 06:44:01,410 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:44:01,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:44:01,410 INFO L85 PathProgramCache]: Analyzing trace with hash -164018879, now seen corresponding path program 1 times [2023-11-29 06:44:01,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:44:01,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622619285] [2023-11-29 06:44:01,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:44:01,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:44:01,801 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:44:01,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [259153501] [2023-11-29 06:44:01,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:44:01,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:44:01,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:44:01,803 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:44:01,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 06:44:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:04,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 2499 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:44:04,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:44:04,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:44:04,865 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:44:04,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:44:04,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622619285] [2023-11-29 06:44:04,865 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:44:04,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259153501] [2023-11-29 06:44:04,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259153501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:44:04,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:44:04,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:44:04,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692654243] [2023-11-29 06:44:04,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:44:04,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:44:04,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:44:04,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:44:04,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:44:04,868 INFO L87 Difference]: Start difference. First operand 73881 states and 122201 transitions. Second operand has 4 states, 4 states have (on average 128.5) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:05,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:44:05,461 INFO L93 Difference]: Finished difference Result 147434 states and 243842 transitions. [2023-11-29 06:44:05,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:44:05,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 128.5) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 514 [2023-11-29 06:44:05,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:44:05,506 INFO L225 Difference]: With dead ends: 147434 [2023-11-29 06:44:05,506 INFO L226 Difference]: Without dead ends: 73911 [2023-11-29 06:44:05,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:44:05,532 INFO L413 NwaCegarLoop]: 20202 mSDtfsCounter, 19853 mSDsluCounter, 20194 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19853 SdHoareTripleChecker+Valid, 40396 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:44:05,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19853 Valid, 40396 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:44:05,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73911 states. [2023-11-29 06:44:06,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73911 to 73887. [2023-11-29 06:44:06,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73887 states, 73886 states have (on average 1.6539939907424952) internal successors, (122207), 73886 states have internal predecessors, (122207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:06,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73887 states to 73887 states and 122207 transitions. [2023-11-29 06:44:06,411 INFO L78 Accepts]: Start accepts. Automaton has 73887 states and 122207 transitions. Word has length 514 [2023-11-29 06:44:06,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:44:06,411 INFO L495 AbstractCegarLoop]: Abstraction has 73887 states and 122207 transitions. [2023-11-29 06:44:06,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.5) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:06,412 INFO L276 IsEmpty]: Start isEmpty. Operand 73887 states and 122207 transitions. [2023-11-29 06:44:06,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-11-29 06:44:06,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:44:06,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:44:06,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 06:44:06,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 06:44:06,618 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:44:06,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:44:06,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1755664219, now seen corresponding path program 1 times [2023-11-29 06:44:06,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:44:06,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637534940] [2023-11-29 06:44:06,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:44:06,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:44:06,975 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:44:06,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [921008999] [2023-11-29 06:44:06,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:44:06,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:44:06,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:44:06,977 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:44:06,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 06:44:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:09,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 2500 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 06:44:09,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:44:09,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:44:09,704 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:44:09,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:44:09,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637534940] [2023-11-29 06:44:09,704 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:44:09,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921008999] [2023-11-29 06:44:09,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921008999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:44:09,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:44:09,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:44:09,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224358106] [2023-11-29 06:44:09,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:44:09,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:44:09,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:44:09,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:44:09,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:44:09,706 INFO L87 Difference]: Start difference. First operand 73887 states and 122207 transitions. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:10,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:44:10,243 INFO L93 Difference]: Finished difference Result 147428 states and 243830 transitions. [2023-11-29 06:44:10,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:44:10,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 514 [2023-11-29 06:44:10,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:44:10,288 INFO L225 Difference]: With dead ends: 147428 [2023-11-29 06:44:10,288 INFO L226 Difference]: Without dead ends: 73899 [2023-11-29 06:44:10,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:44:10,309 INFO L413 NwaCegarLoop]: 20204 mSDtfsCounter, 10 mSDsluCounter, 20192 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 40396 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:44:10,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 40396 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:44:10,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73899 states. [2023-11-29 06:44:11,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73899 to 73887. [2023-11-29 06:44:11,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73887 states, 73886 states have (on average 1.653912784559998) internal successors, (122201), 73886 states have internal predecessors, (122201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:11,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73887 states to 73887 states and 122201 transitions. [2023-11-29 06:44:11,201 INFO L78 Accepts]: Start accepts. Automaton has 73887 states and 122201 transitions. Word has length 514 [2023-11-29 06:44:11,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:44:11,202 INFO L495 AbstractCegarLoop]: Abstraction has 73887 states and 122201 transitions. [2023-11-29 06:44:11,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:11,202 INFO L276 IsEmpty]: Start isEmpty. Operand 73887 states and 122201 transitions. [2023-11-29 06:44:11,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-11-29 06:44:11,208 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:44:11,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:44:11,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 06:44:11,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 06:44:11,409 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:44:11,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:44:11,409 INFO L85 PathProgramCache]: Analyzing trace with hash -743332139, now seen corresponding path program 1 times [2023-11-29 06:44:11,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:44:11,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306481151] [2023-11-29 06:44:11,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:44:11,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:44:11,568 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:44:11,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595909135] [2023-11-29 06:44:11,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:44:11,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:44:11,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:44:11,569 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:44:11,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 06:44:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:14,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 2503 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-29 06:44:14,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:44:15,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:44:15,056 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:44:15,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:44:15,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306481151] [2023-11-29 06:44:15,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:44:15,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595909135] [2023-11-29 06:44:15,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595909135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:44:15,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:44:15,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-29 06:44:15,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756297933] [2023-11-29 06:44:15,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:44:15,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:44:15,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:44:15,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:44:15,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:44:15,059 INFO L87 Difference]: Start difference. First operand 73887 states and 122201 transitions. Second operand has 15 states, 15 states have (on average 34.333333333333336) internal successors, (515), 15 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:28,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:44:28,200 INFO L93 Difference]: Finished difference Result 532576 states and 880589 transitions. [2023-11-29 06:44:28,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-11-29 06:44:28,200 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 34.333333333333336) internal successors, (515), 15 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 515 [2023-11-29 06:44:28,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:44:28,436 INFO L225 Difference]: With dead ends: 532576 [2023-11-29 06:44:28,437 INFO L226 Difference]: Without dead ends: 367467 [2023-11-29 06:44:28,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1661 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=800, Invalid=4456, Unknown=0, NotChecked=0, Total=5256 [2023-11-29 06:44:28,676 INFO L413 NwaCegarLoop]: 19898 mSDtfsCounter, 579611 mSDsluCounter, 237130 mSDsCounter, 0 mSdLazyCounter, 10009 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579611 SdHoareTripleChecker+Valid, 257028 SdHoareTripleChecker+Invalid, 10389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.2s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 10009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:44:28,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579611 Valid, 257028 Invalid, 10389 Unknown, 0 Unchecked, 1.2s Time], IncrementalHoareTripleChecker [380 Valid, 10009 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-11-29 06:44:28,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367467 states. [2023-11-29 06:44:31,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367467 to 73902. [2023-11-29 06:44:31,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73902 states, 73901 states have (on average 1.6537123990203109) internal successors, (122211), 73901 states have internal predecessors, (122211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:31,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73902 states to 73902 states and 122211 transitions. [2023-11-29 06:44:31,319 INFO L78 Accepts]: Start accepts. Automaton has 73902 states and 122211 transitions. Word has length 515 [2023-11-29 06:44:31,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:44:31,320 INFO L495 AbstractCegarLoop]: Abstraction has 73902 states and 122211 transitions. [2023-11-29 06:44:31,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 34.333333333333336) internal successors, (515), 15 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:31,320 INFO L276 IsEmpty]: Start isEmpty. Operand 73902 states and 122211 transitions. [2023-11-29 06:44:31,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2023-11-29 06:44:31,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:44:31,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:44:31,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-29 06:44:31,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 06:44:31,530 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:44:31,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:44:31,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1050421661, now seen corresponding path program 1 times [2023-11-29 06:44:31,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:44:31,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762574261] [2023-11-29 06:44:31,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:44:31,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:44:31,732 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:44:31,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1974252036] [2023-11-29 06:44:31,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:44:31,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:44:31,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:44:31,734 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:44:31,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 06:44:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:34,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 2506 conjuncts, 77 conjunts are in the unsatisfiable core [2023-11-29 06:44:34,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:44:35,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:44:35,297 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:44:35,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:44:35,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762574261] [2023-11-29 06:44:35,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:44:35,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974252036] [2023-11-29 06:44:35,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974252036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:44:35,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:44:35,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-29 06:44:35,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408467177] [2023-11-29 06:44:35,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:44:35,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 06:44:35,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:44:35,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 06:44:35,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:44:35,300 INFO L87 Difference]: Start difference. First operand 73902 states and 122211 transitions. Second operand has 18 states, 18 states have (on average 28.666666666666668) internal successors, (516), 17 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:44,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:44:44,396 INFO L93 Difference]: Finished difference Result 297646 states and 491924 transitions. [2023-11-29 06:44:44,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 06:44:44,397 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 28.666666666666668) internal successors, (516), 17 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 516 [2023-11-29 06:44:44,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:44:44,513 INFO L225 Difference]: With dead ends: 297646 [2023-11-29 06:44:44,513 INFO L226 Difference]: Without dead ends: 221086 [2023-11-29 06:44:44,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=190, Invalid=802, Unknown=0, NotChecked=0, Total=992 [2023-11-29 06:44:44,540 INFO L413 NwaCegarLoop]: 19584 mSDtfsCounter, 119719 mSDsluCounter, 215575 mSDsCounter, 0 mSdLazyCounter, 9503 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119719 SdHoareTripleChecker+Valid, 235159 SdHoareTripleChecker+Invalid, 9507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:44:44,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119719 Valid, 235159 Invalid, 9507 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [4 Valid, 9503 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-11-29 06:44:44,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221086 states. [2023-11-29 06:44:45,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221086 to 73986. [2023-11-29 06:44:45,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73986 states, 73985 states have (on average 1.6531323917010206) internal successors, (122307), 73985 states have internal predecessors, (122307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:46,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73986 states to 73986 states and 122307 transitions. [2023-11-29 06:44:46,195 INFO L78 Accepts]: Start accepts. Automaton has 73986 states and 122307 transitions. Word has length 516 [2023-11-29 06:44:46,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:44:46,195 INFO L495 AbstractCegarLoop]: Abstraction has 73986 states and 122307 transitions. [2023-11-29 06:44:46,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 28.666666666666668) internal successors, (516), 17 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:46,196 INFO L276 IsEmpty]: Start isEmpty. Operand 73986 states and 122307 transitions. [2023-11-29 06:44:46,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2023-11-29 06:44:46,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:44:46,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:44:46,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 06:44:46,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:44:46,402 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:44:46,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:44:46,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1392616605, now seen corresponding path program 1 times [2023-11-29 06:44:46,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:44:46,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190658429] [2023-11-29 06:44:46,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:44:46,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:44:46,552 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:44:46,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252974329] [2023-11-29 06:44:46,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:44:46,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:44:46,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:44:46,554 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:44:46,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 06:44:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:49,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 2509 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 06:44:49,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:44:49,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:44:49,481 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:44:49,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:44:49,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190658429] [2023-11-29 06:44:49,482 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:44:49,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252974329] [2023-11-29 06:44:49,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252974329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:44:49,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:44:49,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:44:49,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914637401] [2023-11-29 06:44:49,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:44:49,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:44:49,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:44:49,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:44:49,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:44:49,484 INFO L87 Difference]: Start difference. First operand 73986 states and 122307 transitions. Second operand has 6 states, 6 states have (on average 86.16666666666667) internal successors, (517), 5 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:51,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:44:51,907 INFO L93 Difference]: Finished difference Result 221206 states and 365681 transitions. [2023-11-29 06:44:51,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:44:51,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 86.16666666666667) internal successors, (517), 5 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 517 [2023-11-29 06:44:51,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:44:51,983 INFO L225 Difference]: With dead ends: 221206 [2023-11-29 06:44:51,983 INFO L226 Difference]: Without dead ends: 147578 [2023-11-29 06:44:52,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:44:52,006 INFO L413 NwaCegarLoop]: 39528 mSDtfsCounter, 39686 mSDsluCounter, 99051 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39686 SdHoareTripleChecker+Valid, 138579 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:44:52,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39686 Valid, 138579 Invalid, 1444 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [1 Valid, 1443 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 06:44:52,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147578 states. [2023-11-29 06:44:53,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147578 to 74022. [2023-11-29 06:44:53,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74022 states, 74021 states have (on average 1.6528147417624728) internal successors, (122343), 74021 states have internal predecessors, (122343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:53,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74022 states to 74022 states and 122343 transitions. [2023-11-29 06:44:53,292 INFO L78 Accepts]: Start accepts. Automaton has 74022 states and 122343 transitions. Word has length 517 [2023-11-29 06:44:53,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:44:53,293 INFO L495 AbstractCegarLoop]: Abstraction has 74022 states and 122343 transitions. [2023-11-29 06:44:53,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.16666666666667) internal successors, (517), 5 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:53,293 INFO L276 IsEmpty]: Start isEmpty. Operand 74022 states and 122343 transitions. [2023-11-29 06:44:53,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2023-11-29 06:44:53,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:44:53,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:44:53,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 06:44:53,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-29 06:44:53,499 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:44:53,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:44:53,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1565835849, now seen corresponding path program 1 times [2023-11-29 06:44:53,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:44:53,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299996909] [2023-11-29 06:44:53,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:44:53,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:44:53,661 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:44:53,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [715033019] [2023-11-29 06:44:53,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:44:53,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:44:53,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:44:53,663 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:44:53,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 06:44:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:44:56,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 2509 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 06:44:56,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:44:57,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:44:57,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:44:57,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:44:57,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299996909] [2023-11-29 06:44:57,033 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:44:57,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715033019] [2023-11-29 06:44:57,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715033019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:44:57,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:44:57,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:44:57,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248576240] [2023-11-29 06:44:57,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:44:57,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:44:57,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:44:57,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:44:57,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:44:57,036 INFO L87 Difference]: Start difference. First operand 74022 states and 122343 transitions. Second operand has 6 states, 6 states have (on average 86.16666666666667) internal successors, (517), 5 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:44:59,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:44:59,354 INFO L93 Difference]: Finished difference Result 221350 states and 365837 transitions. [2023-11-29 06:44:59,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:44:59,354 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 86.16666666666667) internal successors, (517), 5 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 517 [2023-11-29 06:44:59,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:44:59,442 INFO L225 Difference]: With dead ends: 221350 [2023-11-29 06:44:59,442 INFO L226 Difference]: Without dead ends: 147686 [2023-11-29 06:44:59,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:44:59,477 INFO L413 NwaCegarLoop]: 39528 mSDtfsCounter, 39555 mSDsluCounter, 99051 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39555 SdHoareTripleChecker+Valid, 138579 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:44:59,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39555 Valid, 138579 Invalid, 1444 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1 Valid, 1443 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 06:44:59,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147686 states. [2023-11-29 06:45:00,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147686 to 74052. [2023-11-29 06:45:00,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74052 states, 74051 states have (on average 1.652550269408921) internal successors, (122373), 74051 states have internal predecessors, (122373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:45:01,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74052 states to 74052 states and 122373 transitions. [2023-11-29 06:45:01,123 INFO L78 Accepts]: Start accepts. Automaton has 74052 states and 122373 transitions. Word has length 517 [2023-11-29 06:45:01,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:45:01,124 INFO L495 AbstractCegarLoop]: Abstraction has 74052 states and 122373 transitions. [2023-11-29 06:45:01,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.16666666666667) internal successors, (517), 5 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:45:01,124 INFO L276 IsEmpty]: Start isEmpty. Operand 74052 states and 122373 transitions. [2023-11-29 06:45:01,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2023-11-29 06:45:01,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:45:01,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:45:01,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-11-29 06:45:01,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-29 06:45:01,331 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:45:01,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:45:01,331 INFO L85 PathProgramCache]: Analyzing trace with hash -809512367, now seen corresponding path program 1 times [2023-11-29 06:45:01,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:45:01,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875557952] [2023-11-29 06:45:01,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:45:01,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:45:01,486 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:45:01,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [593623904] [2023-11-29 06:45:01,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:45:01,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:45:01,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:45:01,488 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:45:01,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 06:45:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:04,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 2509 conjuncts, 88 conjunts are in the unsatisfiable core [2023-11-29 06:45:04,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:45:05,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:45:05,756 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:45:05,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:45:05,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875557952] [2023-11-29 06:45:05,756 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:45:05,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593623904] [2023-11-29 06:45:05,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593623904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:45:05,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:45:05,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-29 06:45:05,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497252976] [2023-11-29 06:45:05,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:45:05,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 06:45:05,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:45:05,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 06:45:05,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2023-11-29 06:45:05,758 INFO L87 Difference]: Start difference. First operand 74052 states and 122373 transitions. Second operand has 21 states, 21 states have (on average 24.61904761904762) internal successors, (517), 20 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:45:45,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:45:45,939 INFO L93 Difference]: Finished difference Result 794030 states and 1312065 transitions. [2023-11-29 06:45:45,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2023-11-29 06:45:45,939 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 24.61904761904762) internal successors, (517), 20 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 517 [2023-11-29 06:45:45,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:45:46,271 INFO L225 Difference]: With dead ends: 794030 [2023-11-29 06:45:46,271 INFO L226 Difference]: Without dead ends: 490878 [2023-11-29 06:45:46,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6341 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2046, Invalid=15510, Unknown=0, NotChecked=0, Total=17556 [2023-11-29 06:45:46,369 INFO L413 NwaCegarLoop]: 19785 mSDtfsCounter, 844894 mSDsluCounter, 346510 mSDsCounter, 0 mSdLazyCounter, 35995 mSolverCounterSat, 760 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844894 SdHoareTripleChecker+Valid, 366295 SdHoareTripleChecker+Invalid, 36755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.6s SdHoareTripleChecker+Time, 760 IncrementalHoareTripleChecker+Valid, 35995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:45:46,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844894 Valid, 366295 Invalid, 36755 Unknown, 0 Unchecked, 1.6s Time], IncrementalHoareTripleChecker [760 Valid, 35995 Invalid, 0 Unknown, 0 Unchecked, 26.0s Time] [2023-11-29 06:45:46,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490878 states. [2023-11-29 06:45:49,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490878 to 74082. [2023-11-29 06:45:49,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74082 states, 74081 states have (on average 1.6525559860153076) internal successors, (122423), 74081 states have internal predecessors, (122423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:45:49,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74082 states to 74082 states and 122423 transitions. [2023-11-29 06:45:49,811 INFO L78 Accepts]: Start accepts. Automaton has 74082 states and 122423 transitions. Word has length 517 [2023-11-29 06:45:49,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:45:49,812 INFO L495 AbstractCegarLoop]: Abstraction has 74082 states and 122423 transitions. [2023-11-29 06:45:49,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 24.61904761904762) internal successors, (517), 20 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:45:49,812 INFO L276 IsEmpty]: Start isEmpty. Operand 74082 states and 122423 transitions. [2023-11-29 06:45:49,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2023-11-29 06:45:49,817 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:45:49,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:45:49,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 06:45:50,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:45:50,018 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:45:50,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:45:50,019 INFO L85 PathProgramCache]: Analyzing trace with hash 2104747025, now seen corresponding path program 1 times [2023-11-29 06:45:50,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:45:50,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590556668] [2023-11-29 06:45:50,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:45:50,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:45:50,176 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:45:50,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197413826] [2023-11-29 06:45:50,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:45:50,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:45:50,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:45:50,178 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:45:50,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 06:45:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:45:52,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 2509 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-29 06:45:52,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:45:54,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:45:54,428 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:45:54,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:45:54,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590556668] [2023-11-29 06:45:54,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:45:54,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197413826] [2023-11-29 06:45:54,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197413826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:45:54,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:45:54,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-29 06:45:54,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050553426] [2023-11-29 06:45:54,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:45:54,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 06:45:54,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:45:54,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 06:45:54,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:45:54,431 INFO L87 Difference]: Start difference. First operand 74082 states and 122423 transitions. Second operand has 16 states, 16 states have (on average 32.3125) internal successors, (517), 15 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:07,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:07,516 INFO L93 Difference]: Finished difference Result 224582 states and 370933 transitions. [2023-11-29 06:46:07,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 06:46:07,516 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 32.3125) internal successors, (517), 15 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 517 [2023-11-29 06:46:07,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:46:07,623 INFO L225 Difference]: With dead ends: 224582 [2023-11-29 06:46:07,623 INFO L226 Difference]: Without dead ends: 147866 [2023-11-29 06:46:07,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=179, Invalid=751, Unknown=0, NotChecked=0, Total=930 [2023-11-29 06:46:07,654 INFO L413 NwaCegarLoop]: 38434 mSDtfsCounter, 80729 mSDsluCounter, 362266 mSDsCounter, 0 mSdLazyCounter, 17345 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80729 SdHoareTripleChecker+Valid, 400700 SdHoareTripleChecker+Invalid, 17350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:46:07,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80729 Valid, 400700 Invalid, 17350 Unknown, 0 Unchecked, 1.0s Time], IncrementalHoareTripleChecker [5 Valid, 17345 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2023-11-29 06:46:07,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147866 states. [2023-11-29 06:46:09,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147866 to 74118. [2023-11-29 06:46:09,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74118 states, 74117 states have (on average 1.652562839834316) internal successors, (122483), 74117 states have internal predecessors, (122483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:09,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74118 states to 74118 states and 122483 transitions. [2023-11-29 06:46:09,278 INFO L78 Accepts]: Start accepts. Automaton has 74118 states and 122483 transitions. Word has length 517 [2023-11-29 06:46:09,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:46:09,278 INFO L495 AbstractCegarLoop]: Abstraction has 74118 states and 122483 transitions. [2023-11-29 06:46:09,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 32.3125) internal successors, (517), 15 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:09,279 INFO L276 IsEmpty]: Start isEmpty. Operand 74118 states and 122483 transitions. [2023-11-29 06:46:09,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2023-11-29 06:46:09,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:46:09,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:09,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 06:46:09,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:46:09,486 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:46:09,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:09,487 INFO L85 PathProgramCache]: Analyzing trace with hash -588798511, now seen corresponding path program 1 times [2023-11-29 06:46:09,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:09,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213342321] [2023-11-29 06:46:09,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:09,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:09,668 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 06:46:09,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253292002] [2023-11-29 06:46:09,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:09,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:46:09,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:09,670 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:46:09,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d733db-788d-48d9-b22a-4d06c3f4fb9f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-29 06:46:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:12,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 2509 conjuncts, 78 conjunts are in the unsatisfiable core [2023-11-29 06:46:12,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:14,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:14,573 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:46:14,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:46:14,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213342321] [2023-11-29 06:46:14,574 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 06:46:14,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253292002] [2023-11-29 06:46:14,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253292002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:46:14,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:46:14,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-29 06:46:14,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106151383] [2023-11-29 06:46:14,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:46:14,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 06:46:14,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:46:14,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 06:46:14,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:46:14,576 INFO L87 Difference]: Start difference. First operand 74118 states and 122483 transitions. Second operand has 17 states, 17 states have (on average 30.41176470588235) internal successors, (517), 16 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)