./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal153.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/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_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal153.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/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_ea0908a4-3a7b-4fd8-a566-c1909541e56b/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 43d072c54895fdbed6d7aa8af29be8610427c640eb8618142128c4d9fc15de30 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:13:27,551 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:13:27,614 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 03:13:27,619 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:13:27,620 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:13:27,642 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:13:27,642 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:13:27,643 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:13:27,644 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:13:27,644 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:13:27,645 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:13:27,645 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:13:27,646 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:13:27,646 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:13:27,647 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:13:27,647 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:13:27,648 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:13:27,648 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:13:27,649 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:13:27,649 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:13:27,650 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:13:27,652 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:13:27,653 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:13:27,653 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:13:27,654 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:13:27,654 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:13:27,654 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:13:27,655 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:13:27,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:13:27,655 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:13:27,656 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:13:27,656 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:13:27,656 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:13:27,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:13:27,657 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:13:27,657 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:13:27,657 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:13:27,657 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:13:27,658 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:13:27,658 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_ea0908a4-3a7b-4fd8-a566-c1909541e56b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43d072c54895fdbed6d7aa8af29be8610427c640eb8618142128c4d9fc15de30 [2023-11-29 03:13:27,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:13:27,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:13:27,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:13:27,904 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:13:27,904 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:13:27,906 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal153.c [2023-11-29 03:13:30,639 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:13:31,186 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:13:31,187 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal153.c [2023-11-29 03:13:31,244 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/data/f7d55659c/7b822b37aed740b2a270915b0aa36db1/FLAGbbf5ce247 [2023-11-29 03:13:31,258 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/data/f7d55659c/7b822b37aed740b2a270915b0aa36db1 [2023-11-29 03:13:31,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:13:31,262 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:13:31,263 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:13:31,263 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:13:31,268 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:13:31,269 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:13:31" (1/1) ... [2023-11-29 03:13:31,270 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d18acaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:31, skipping insertion in model container [2023-11-29 03:13:31,270 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:13:31" (1/1) ... [2023-11-29 03:13:31,512 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:13:31,895 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_ea0908a4-3a7b-4fd8-a566-c1909541e56b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal153.c[1246,1259] [2023-11-29 03:13:33,442 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:13:33,452 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:13:33,503 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_ea0908a4-3a7b-4fd8-a566-c1909541e56b/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal153.c[1246,1259] [2023-11-29 03:13:34,725 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:13:34,736 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:13:34,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:34 WrapperNode [2023-11-29 03:13:34,737 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:13:34,738 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:13:34,738 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:13:34,738 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:13:34,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:34" (1/1) ... [2023-11-29 03:13:35,174 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:34" (1/1) ... [2023-11-29 03:13:39,060 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57661 [2023-11-29 03:13:39,060 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:13:39,061 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:13:39,061 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:13:39,061 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:13:39,072 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:34" (1/1) ... [2023-11-29 03:13:39,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:34" (1/1) ... [2023-11-29 03:13:40,333 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:34" (1/1) ... [2023-11-29 03:13:41,003 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 03:13:41,003 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:34" (1/1) ... [2023-11-29 03:13:41,003 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:34" (1/1) ... [2023-11-29 03:13:41,935 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:34" (1/1) ... [2023-11-29 03:13:42,106 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:34" (1/1) ... [2023-11-29 03:13:42,288 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:34" (1/1) ... [2023-11-29 03:13:42,429 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:34" (1/1) ... [2023-11-29 03:13:43,149 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:13:43,150 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:13:43,150 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:13:43,150 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:13:43,151 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:34" (1/1) ... [2023-11-29 03:13:43,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:13:43,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:43,176 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:43,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:13:43,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:13:43,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:13:43,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:13:43,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:13:45,656 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:13:45,657 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:14:19,234 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:14:19,992 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:14:19,993 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 03:14:19,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:14:19 BoogieIcfgContainer [2023-11-29 03:14:19,999 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:14:20,001 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:14:20,002 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:14:20,005 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:14:20,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:13:31" (1/3) ... [2023-11-29 03:14:20,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341087f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:14:20, skipping insertion in model container [2023-11-29 03:14:20,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:34" (2/3) ... [2023-11-29 03:14:20,007 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341087f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:14:20, skipping insertion in model container [2023-11-29 03:14:20,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:14:19" (3/3) ... [2023-11-29 03:14:20,008 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal153.c [2023-11-29 03:14:20,027 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:14:20,027 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 03:14:20,218 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:14:20,225 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;@6358b465, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:14:20,225 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 03:14:20,262 INFO L276 IsEmpty]: Start isEmpty. Operand has 11990 states, 11988 states have (on average 1.6672505839172507) internal successors, (19987), 11989 states have internal predecessors, (19987), 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 03:14:20,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-11-29 03:14:20,288 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:14:20,289 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] [2023-11-29 03:14:20,290 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:14:20,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:20,295 INFO L85 PathProgramCache]: Analyzing trace with hash -472807335, now seen corresponding path program 1 times [2023-11-29 03:14:20,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:20,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525158929] [2023-11-29 03:14:20,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:20,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:20,878 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:14:20,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1986729998] [2023-11-29 03:14:20,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:20,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:20,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:14:20,886 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:14:20,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:14:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:24,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 2015 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:14:24,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:14:24,279 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 03:14:24,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:14:24,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:14:24,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525158929] [2023-11-29 03:14:24,280 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:14:24,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986729998] [2023-11-29 03:14:24,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986729998] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:14:24,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:14:24,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:14:24,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304396581] [2023-11-29 03:14:24,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:14:24,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:14:24,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:14:24,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:14:24,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:14:24,339 INFO L87 Difference]: Start difference. First operand has 11990 states, 11988 states have (on average 1.6672505839172507) internal successors, (19987), 11989 states have internal predecessors, (19987), 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 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 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 03:14:24,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:14:24,763 INFO L93 Difference]: Finished difference Result 23697 states and 39505 transitions. [2023-11-29 03:14:24,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:14:24,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 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 407 [2023-11-29 03:14:24,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:14:24,830 INFO L225 Difference]: With dead ends: 23697 [2023-11-29 03:14:24,830 INFO L226 Difference]: Without dead ends: 11990 [2023-11-29 03:14:24,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 405 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 03:14:24,850 INFO L413 NwaCegarLoop]: 19978 mSDtfsCounter, 6 mSDsluCounter, 19968 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 39946 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 03:14:24,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 39946 Invalid, 8 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:14:24,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11990 states. [2023-11-29 03:14:25,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11990 to 11989. [2023-11-29 03:14:25,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11989 states, 11988 states have (on average 1.6667500834167501) internal successors, (19981), 11988 states have internal predecessors, (19981), 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 03:14:25,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11989 states to 11989 states and 19981 transitions. [2023-11-29 03:14:25,118 INFO L78 Accepts]: Start accepts. Automaton has 11989 states and 19981 transitions. Word has length 407 [2023-11-29 03:14:25,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:14:25,120 INFO L495 AbstractCegarLoop]: Abstraction has 11989 states and 19981 transitions. [2023-11-29 03:14:25,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 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 03:14:25,121 INFO L276 IsEmpty]: Start isEmpty. Operand 11989 states and 19981 transitions. [2023-11-29 03:14:25,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-11-29 03:14:25,128 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:14:25,128 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] [2023-11-29 03:14:25,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:14:25,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 03:14:25,329 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:14:25,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:25,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1153119029, now seen corresponding path program 1 times [2023-11-29 03:14:25,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:25,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685236023] [2023-11-29 03:14:25,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:25,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:25,854 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:14:25,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1498329765] [2023-11-29 03:14:25,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:25,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:25,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:14:25,858 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:14:25,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:14:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:28,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 2015 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-29 03:14:28,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:14:31,089 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 03:14:31,089 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:14:31,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:14:31,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685236023] [2023-11-29 03:14:31,090 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:14:31,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498329765] [2023-11-29 03:14:31,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498329765] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:14:31,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:14:31,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 03:14:31,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21816920] [2023-11-29 03:14:31,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:14:31,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:14:31,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:14:31,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:14:31,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:14:31,095 INFO L87 Difference]: Start difference. First operand 11989 states and 19981 transitions. Second operand has 12 states, 12 states have (on average 33.916666666666664) internal successors, (407), 11 states have internal predecessors, (407), 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 03:14:56,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:14:56,731 INFO L93 Difference]: Finished difference Result 82439 states and 137391 transitions. [2023-11-29 03:14:56,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 03:14:56,732 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 33.916666666666664) internal successors, (407), 11 states have internal predecessors, (407), 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 407 [2023-11-29 03:14:56,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:14:56,858 INFO L225 Difference]: With dead ends: 82439 [2023-11-29 03:14:56,858 INFO L226 Difference]: Without dead ends: 70733 [2023-11-29 03:14:56,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=361, Invalid=1531, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 03:14:56,875 INFO L413 NwaCegarLoop]: 17433 mSDtfsCounter, 290122 mSDsluCounter, 138643 mSDsCounter, 0 mSdLazyCounter, 27790 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290122 SdHoareTripleChecker+Valid, 156076 SdHoareTripleChecker+Invalid, 27803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.7s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 27790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:14:56,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290122 Valid, 156076 Invalid, 27803 Unknown, 0 Unchecked, 0.7s Time], IncrementalHoareTripleChecker [13 Valid, 27790 Invalid, 0 Unknown, 0 Unchecked, 22.2s Time] [2023-11-29 03:14:56,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70733 states. [2023-11-29 03:14:57,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70733 to 12097. [2023-11-29 03:14:57,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12097 states, 12096 states have (on average 1.6664186507936507) internal successors, (20157), 12096 states have internal predecessors, (20157), 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 03:14:57,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12097 states to 12097 states and 20157 transitions. [2023-11-29 03:14:57,271 INFO L78 Accepts]: Start accepts. Automaton has 12097 states and 20157 transitions. Word has length 407 [2023-11-29 03:14:57,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:14:57,273 INFO L495 AbstractCegarLoop]: Abstraction has 12097 states and 20157 transitions. [2023-11-29 03:14:57,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 33.916666666666664) internal successors, (407), 11 states have internal predecessors, (407), 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 03:14:57,273 INFO L276 IsEmpty]: Start isEmpty. Operand 12097 states and 20157 transitions. [2023-11-29 03:14:57,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2023-11-29 03:14:57,279 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:14:57,280 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] [2023-11-29 03:14:57,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:14:57,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:57,481 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:14:57,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:57,482 INFO L85 PathProgramCache]: Analyzing trace with hash -202705051, now seen corresponding path program 1 times [2023-11-29 03:14:57,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:57,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443928380] [2023-11-29 03:14:57,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:57,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:57,680 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:14:57,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1199035812] [2023-11-29 03:14:57,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:57,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:57,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:14:57,683 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:14:57,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:15:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:00,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 2021 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 03:15:00,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:15:01,562 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 03:15:01,562 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:15:01,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:15:01,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443928380] [2023-11-29 03:15:01,563 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:15:01,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199035812] [2023-11-29 03:15:01,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199035812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:15:01,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:15:01,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-29 03:15:01,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595275153] [2023-11-29 03:15:01,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:15:01,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 03:15:01,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:15:01,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 03:15:01,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-29 03:15:01,567 INFO L87 Difference]: Start difference. First operand 12097 states and 20157 transitions. Second operand has 14 states, 14 states have (on average 29.214285714285715) internal successors, (409), 13 states have internal predecessors, (409), 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 03:15:05,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:15:05,522 INFO L93 Difference]: Finished difference Result 59397 states and 98957 transitions. [2023-11-29 03:15:05,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-29 03:15:05,523 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 29.214285714285715) internal successors, (409), 13 states have internal predecessors, (409), 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 409 [2023-11-29 03:15:05,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:15:05,635 INFO L225 Difference]: With dead ends: 59397 [2023-11-29 03:15:05,635 INFO L226 Difference]: Without dead ends: 47583 [2023-11-29 03:15:05,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=398, Invalid=1672, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 03:15:05,652 INFO L413 NwaCegarLoop]: 39715 mSDtfsCounter, 155877 mSDsluCounter, 336046 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155877 SdHoareTripleChecker+Valid, 375761 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:15:05,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155877 Valid, 375761 Invalid, 896 Unknown, 0 Unchecked, 1.1s Time], IncrementalHoareTripleChecker [12 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 03:15:05,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47583 states. [2023-11-29 03:15:05,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47583 to 12115. [2023-11-29 03:15:05,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12115 states, 12114 states have (on average 1.6656760772659733) internal successors, (20178), 12114 states have internal predecessors, (20178), 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 03:15:05,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12115 states to 12115 states and 20178 transitions. [2023-11-29 03:15:05,930 INFO L78 Accepts]: Start accepts. Automaton has 12115 states and 20178 transitions. Word has length 409 [2023-11-29 03:15:05,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:15:05,930 INFO L495 AbstractCegarLoop]: Abstraction has 12115 states and 20178 transitions. [2023-11-29 03:15:05,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 29.214285714285715) internal successors, (409), 13 states have internal predecessors, (409), 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 03:15:05,931 INFO L276 IsEmpty]: Start isEmpty. Operand 12115 states and 20178 transitions. [2023-11-29 03:15:05,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2023-11-29 03:15:05,936 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:15:05,936 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] [2023-11-29 03:15:05,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:15:06,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:06,137 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:15:06,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:15:06,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1195695885, now seen corresponding path program 1 times [2023-11-29 03:15:06,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:15:06,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574463913] [2023-11-29 03:15:06,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:06,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:15:06,320 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:15:06,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1470673919] [2023-11-29 03:15:06,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:06,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:06,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:15:06,322 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:15:06,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:15:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:08,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 2021 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:15:08,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:15:08,887 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 03:15:08,887 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:15:08,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:15:08,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574463913] [2023-11-29 03:15:08,887 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:15:08,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470673919] [2023-11-29 03:15:08,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470673919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:15:08,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:15:08,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:15:08,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626435265] [2023-11-29 03:15:08,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:15:08,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:15:08,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:15:08,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:15:08,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:15:08,891 INFO L87 Difference]: Start difference. First operand 12115 states and 20178 transitions. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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 03:15:09,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:15:09,229 INFO L93 Difference]: Finished difference Result 23948 states and 39887 transitions. [2023-11-29 03:15:09,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:15:09,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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 409 [2023-11-29 03:15:09,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:15:09,241 INFO L225 Difference]: With dead ends: 23948 [2023-11-29 03:15:09,241 INFO L226 Difference]: Without dead ends: 12116 [2023-11-29 03:15:09,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 407 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 03:15:09,253 INFO L413 NwaCegarLoop]: 19978 mSDtfsCounter, 6 mSDsluCounter, 19968 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 39946 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 03:15:09,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 39946 Invalid, 8 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:15:09,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12116 states. [2023-11-29 03:15:09,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12116 to 12115. [2023-11-29 03:15:09,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12115 states, 12114 states have (on average 1.6655935281492489) internal successors, (20177), 12114 states have internal predecessors, (20177), 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 03:15:09,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12115 states to 12115 states and 20177 transitions. [2023-11-29 03:15:09,441 INFO L78 Accepts]: Start accepts. Automaton has 12115 states and 20177 transitions. Word has length 409 [2023-11-29 03:15:09,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:15:09,441 INFO L495 AbstractCegarLoop]: Abstraction has 12115 states and 20177 transitions. [2023-11-29 03:15:09,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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 03:15:09,442 INFO L276 IsEmpty]: Start isEmpty. Operand 12115 states and 20177 transitions. [2023-11-29 03:15:09,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2023-11-29 03:15:09,445 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:15:09,445 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] [2023-11-29 03:15:09,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:15:09,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:09,651 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:15:09,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:15:09,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1709402473, now seen corresponding path program 1 times [2023-11-29 03:15:09,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:15:09,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203421343] [2023-11-29 03:15:09,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:09,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:15:09,870 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:15:09,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352041641] [2023-11-29 03:15:09,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:09,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:09,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:15:09,872 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:15:09,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:15:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:12,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 2021 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:15:12,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:15:12,434 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 03:15:12,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:15:12,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:15:12,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203421343] [2023-11-29 03:15:12,435 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:15:12,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352041641] [2023-11-29 03:15:12,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352041641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:15:12,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:15:12,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:15:12,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351246155] [2023-11-29 03:15:12,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:15:12,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:15:12,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:15:12,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:15:12,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:15:12,438 INFO L87 Difference]: Start difference. First operand 12115 states and 20177 transitions. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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 03:15:12,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:15:12,639 INFO L93 Difference]: Finished difference Result 23948 states and 39885 transitions. [2023-11-29 03:15:12,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:15:12,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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 409 [2023-11-29 03:15:12,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:15:12,647 INFO L225 Difference]: With dead ends: 23948 [2023-11-29 03:15:12,648 INFO L226 Difference]: Without dead ends: 12116 [2023-11-29 03:15:12,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 407 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 03:15:12,659 INFO L413 NwaCegarLoop]: 19978 mSDtfsCounter, 6 mSDsluCounter, 19968 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 39946 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 03:15:12,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 39946 Invalid, 8 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:15:12,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12116 states. [2023-11-29 03:15:12,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12116 to 12115. [2023-11-29 03:15:12,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12115 states, 12114 states have (on average 1.6655109790325244) internal successors, (20176), 12114 states have internal predecessors, (20176), 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 03:15:12,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12115 states to 12115 states and 20176 transitions. [2023-11-29 03:15:12,854 INFO L78 Accepts]: Start accepts. Automaton has 12115 states and 20176 transitions. Word has length 409 [2023-11-29 03:15:12,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:15:12,854 INFO L495 AbstractCegarLoop]: Abstraction has 12115 states and 20176 transitions. [2023-11-29 03:15:12,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 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 03:15:12,855 INFO L276 IsEmpty]: Start isEmpty. Operand 12115 states and 20176 transitions. [2023-11-29 03:15:12,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2023-11-29 03:15:12,858 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:15:12,859 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] [2023-11-29 03:15:12,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:15:13,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:13,060 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:15:13,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:15:13,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1982490365, now seen corresponding path program 1 times [2023-11-29 03:15:13,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:15:13,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008331951] [2023-11-29 03:15:13,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:13,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:15:13,238 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:15:13,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416308922] [2023-11-29 03:15:13,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:13,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:13,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:15:13,240 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:15:13,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:15:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:15,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 2024 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 03:15:15,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:15:16,751 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 03:15:16,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:15:16,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:15:16,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008331951] [2023-11-29 03:15:16,751 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:15:16,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416308922] [2023-11-29 03:15:16,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416308922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:15:16,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:15:16,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 03:15:16,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998589917] [2023-11-29 03:15:16,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:15:16,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:15:16,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:15:16,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:15:16,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:15:16,754 INFO L87 Difference]: Start difference. First operand 12115 states and 20176 transitions. Second operand has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 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 03:15:19,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:15:19,224 INFO L93 Difference]: Finished difference Result 59677 states and 99368 transitions. [2023-11-29 03:15:19,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 03:15:19,225 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 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 410 [2023-11-29 03:15:19,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:15:19,290 INFO L225 Difference]: With dead ends: 59677 [2023-11-29 03:15:19,290 INFO L226 Difference]: Without dead ends: 47845 [2023-11-29 03:15:19,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 405 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 03:15:19,307 INFO L413 NwaCegarLoop]: 20468 mSDtfsCounter, 232242 mSDsluCounter, 102959 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232242 SdHoareTripleChecker+Valid, 123427 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:15:19,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232242 Valid, 123427 Invalid, 251 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [8 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:15:19,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47845 states. [2023-11-29 03:15:19,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47845 to 12118. [2023-11-29 03:15:19,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12118 states, 12117 states have (on average 1.6652636791284972) internal successors, (20178), 12117 states have internal predecessors, (20178), 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 03:15:19,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12118 states to 12118 states and 20178 transitions. [2023-11-29 03:15:19,645 INFO L78 Accepts]: Start accepts. Automaton has 12118 states and 20178 transitions. Word has length 410 [2023-11-29 03:15:19,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:15:19,646 INFO L495 AbstractCegarLoop]: Abstraction has 12118 states and 20178 transitions. [2023-11-29 03:15:19,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 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 03:15:19,646 INFO L276 IsEmpty]: Start isEmpty. Operand 12118 states and 20178 transitions. [2023-11-29 03:15:19,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2023-11-29 03:15:19,650 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:15:19,651 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] [2023-11-29 03:15:19,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 03:15:19,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:19,852 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:15:19,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:15:19,852 INFO L85 PathProgramCache]: Analyzing trace with hash 470826201, now seen corresponding path program 1 times [2023-11-29 03:15:19,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:15:19,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498346471] [2023-11-29 03:15:19,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:19,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:15:20,068 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:15:20,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1529064051] [2023-11-29 03:15:20,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:20,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:20,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:15:20,070 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:15:20,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:15:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:22,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 2027 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 03:15:22,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:15:23,753 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 03:15:23,754 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:15:23,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:15:23,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498346471] [2023-11-29 03:15:23,754 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:15:23,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529064051] [2023-11-29 03:15:23,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529064051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:15:23,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:15:23,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:15:23,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539605825] [2023-11-29 03:15:23,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:15:23,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:15:23,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:15:23,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:15:23,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:15:23,757 INFO L87 Difference]: Start difference. First operand 12118 states and 20178 transitions. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 3 states have internal predecessors, (411), 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 03:15:24,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:15:24,386 INFO L93 Difference]: Finished difference Result 23953 states and 39885 transitions. [2023-11-29 03:15:24,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:15:24,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 3 states have internal predecessors, (411), 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 411 [2023-11-29 03:15:24,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:15:24,396 INFO L225 Difference]: With dead ends: 23953 [2023-11-29 03:15:24,396 INFO L226 Difference]: Without dead ends: 12118 [2023-11-29 03:15:24,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 408 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 03:15:24,404 INFO L413 NwaCegarLoop]: 19813 mSDtfsCounter, 19728 mSDsluCounter, 19812 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19728 SdHoareTripleChecker+Valid, 39625 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:15:24,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19728 Valid, 39625 Invalid, 329 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:15:24,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12118 states. [2023-11-29 03:15:24,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12118 to 12118. [2023-11-29 03:15:24,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12118 states, 12117 states have (on average 1.6650986217710655) internal successors, (20176), 12117 states have internal predecessors, (20176), 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 03:15:24,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12118 states to 12118 states and 20176 transitions. [2023-11-29 03:15:24,592 INFO L78 Accepts]: Start accepts. Automaton has 12118 states and 20176 transitions. Word has length 411 [2023-11-29 03:15:24,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:15:24,593 INFO L495 AbstractCegarLoop]: Abstraction has 12118 states and 20176 transitions. [2023-11-29 03:15:24,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 3 states have internal predecessors, (411), 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 03:15:24,593 INFO L276 IsEmpty]: Start isEmpty. Operand 12118 states and 20176 transitions. [2023-11-29 03:15:24,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2023-11-29 03:15:24,597 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:15:24,598 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] [2023-11-29 03:15:24,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 03:15:24,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 03:15:24,798 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:15:24,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:15:24,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1911876853, now seen corresponding path program 1 times [2023-11-29 03:15:24,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:15:24,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994389613] [2023-11-29 03:15:24,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:24,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:15:25,028 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:15:25,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1879589842] [2023-11-29 03:15:25,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:25,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:25,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:15:25,030 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:15:25,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 03:15:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:27,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 2031 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:15:27,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:15:28,337 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 03:15:28,337 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:15:28,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:15:28,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994389613] [2023-11-29 03:15:28,337 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:15:28,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879589842] [2023-11-29 03:15:28,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879589842] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:15:28,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:15:28,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:15:28,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041093748] [2023-11-29 03:15:28,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:15:28,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:15:28,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:15:28,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:15:28,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:15:28,340 INFO L87 Difference]: Start difference. First operand 12118 states and 20176 transitions. Second operand has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 5 states have internal predecessors, (412), 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 03:15:29,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:15:29,176 INFO L93 Difference]: Finished difference Result 23953 states and 39881 transitions. [2023-11-29 03:15:29,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:15:29,177 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 5 states have internal predecessors, (412), 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 412 [2023-11-29 03:15:29,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:15:29,187 INFO L225 Difference]: With dead ends: 23953 [2023-11-29 03:15:29,187 INFO L226 Difference]: Without dead ends: 12118 [2023-11-29 03:15:29,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 407 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 03:15:29,195 INFO L413 NwaCegarLoop]: 19813 mSDtfsCounter, 39540 mSDsluCounter, 39624 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39540 SdHoareTripleChecker+Valid, 59437 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:15:29,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39540 Valid, 59437 Invalid, 488 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:15:29,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12118 states. [2023-11-29 03:15:29,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12118 to 12118. [2023-11-29 03:15:29,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12118 states, 12117 states have (on average 1.6649335644136338) internal successors, (20174), 12117 states have internal predecessors, (20174), 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 03:15:29,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12118 states to 12118 states and 20174 transitions. [2023-11-29 03:15:29,354 INFO L78 Accepts]: Start accepts. Automaton has 12118 states and 20174 transitions. Word has length 412 [2023-11-29 03:15:29,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:15:29,355 INFO L495 AbstractCegarLoop]: Abstraction has 12118 states and 20174 transitions. [2023-11-29 03:15:29,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 5 states have internal predecessors, (412), 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 03:15:29,355 INFO L276 IsEmpty]: Start isEmpty. Operand 12118 states and 20174 transitions. [2023-11-29 03:15:29,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2023-11-29 03:15:29,358 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:15:29,359 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] [2023-11-29 03:15:29,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 03:15:29,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 03:15:29,560 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:15:29,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:15:29,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1288422479, now seen corresponding path program 1 times [2023-11-29 03:15:29,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:15:29,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416383516] [2023-11-29 03:15:29,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:29,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:15:29,768 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:15:29,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [690125104] [2023-11-29 03:15:29,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:29,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:29,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:15:29,770 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:15:29,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 03:15:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:32,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 2034 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:15:32,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:15:33,165 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 03:15:33,165 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:15:33,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:15:33,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416383516] [2023-11-29 03:15:33,166 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:15:33,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690125104] [2023-11-29 03:15:33,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690125104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:15:33,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:15:33,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:15:33,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749531622] [2023-11-29 03:15:33,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:15:33,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:15:33,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:15:33,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:15:33,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:15:33,168 INFO L87 Difference]: Start difference. First operand 12118 states and 20174 transitions. Second operand has 6 states, 6 states have (on average 68.83333333333333) internal successors, (413), 5 states have internal predecessors, (413), 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 03:15:34,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:15:34,014 INFO L93 Difference]: Finished difference Result 23953 states and 39877 transitions. [2023-11-29 03:15:34,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:15:34,014 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 68.83333333333333) internal successors, (413), 5 states have internal predecessors, (413), 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 413 [2023-11-29 03:15:34,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:15:34,024 INFO L225 Difference]: With dead ends: 23953 [2023-11-29 03:15:34,024 INFO L226 Difference]: Without dead ends: 12118 [2023-11-29 03:15:34,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 408 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 03:15:34,032 INFO L413 NwaCegarLoop]: 19813 mSDtfsCounter, 39536 mSDsluCounter, 39624 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39536 SdHoareTripleChecker+Valid, 59437 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:15:34,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39536 Valid, 59437 Invalid, 486 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 03:15:34,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12118 states. [2023-11-29 03:15:34,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12118 to 12118. [2023-11-29 03:15:34,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12118 states, 12117 states have (on average 1.664768507056202) internal successors, (20172), 12117 states have internal predecessors, (20172), 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 03:15:34,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12118 states to 12118 states and 20172 transitions. [2023-11-29 03:15:34,186 INFO L78 Accepts]: Start accepts. Automaton has 12118 states and 20172 transitions. Word has length 413 [2023-11-29 03:15:34,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:15:34,186 INFO L495 AbstractCegarLoop]: Abstraction has 12118 states and 20172 transitions. [2023-11-29 03:15:34,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.83333333333333) internal successors, (413), 5 states have internal predecessors, (413), 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 03:15:34,187 INFO L276 IsEmpty]: Start isEmpty. Operand 12118 states and 20172 transitions. [2023-11-29 03:15:34,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2023-11-29 03:15:34,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:15:34,190 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] [2023-11-29 03:15:34,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 03:15:34,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 03:15:34,391 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:15:34,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:15:34,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1261356877, now seen corresponding path program 1 times [2023-11-29 03:15:34,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:15:34,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22177433] [2023-11-29 03:15:34,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:34,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:15:34,595 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:15:34,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [973900651] [2023-11-29 03:15:34,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:15:34,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:15:34,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:15:34,597 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:15:34,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 03:15:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:15:37,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 2035 conjuncts, 90 conjunts are in the unsatisfiable core [2023-11-29 03:15:37,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:15:39,702 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 03:15:39,702 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:15:39,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:15:39,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22177433] [2023-11-29 03:15:39,702 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:15:39,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973900651] [2023-11-29 03:15:39,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973900651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:15:39,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:15:39,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-29 03:15:39,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115700416] [2023-11-29 03:15:39,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:15:39,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 03:15:39,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:15:39,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 03:15:39,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:15:39,705 INFO L87 Difference]: Start difference. First operand 12118 states and 20172 transitions. Second operand has 16 states, 16 states have (on average 25.8125) internal successors, (413), 15 states have internal predecessors, (413), 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 03:16:21,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:16:21,306 INFO L93 Difference]: Finished difference Result 130526 states and 217248 transitions. [2023-11-29 03:16:21,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-11-29 03:16:21,307 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 25.8125) internal successors, (413), 15 states have internal predecessors, (413), 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 413 [2023-11-29 03:16:21,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:16:21,363 INFO L225 Difference]: With dead ends: 130526 [2023-11-29 03:16:21,363 INFO L226 Difference]: Without dead ends: 118691 [2023-11-29 03:16:21,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1450 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=850, Invalid=4120, Unknown=0, NotChecked=0, Total=4970 [2023-11-29 03:16:21,375 INFO L413 NwaCegarLoop]: 17552 mSDtfsCounter, 564868 mSDsluCounter, 259628 mSDsCounter, 0 mSdLazyCounter, 41307 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564868 SdHoareTripleChecker+Valid, 277180 SdHoareTripleChecker+Invalid, 41352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.2s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 41307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:16:21,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564868 Valid, 277180 Invalid, 41352 Unknown, 0 Unchecked, 1.2s Time], IncrementalHoareTripleChecker [45 Valid, 41307 Invalid, 0 Unknown, 0 Unchecked, 33.1s Time] [2023-11-29 03:16:21,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118691 states. [2023-11-29 03:16:21,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118691 to 12157. [2023-11-29 03:16:21,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12157 states, 12156 states have (on average 1.6641987495886805) internal successors, (20230), 12156 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 03:16:21,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12157 states to 12157 states and 20230 transitions. [2023-11-29 03:16:21,728 INFO L78 Accepts]: Start accepts. Automaton has 12157 states and 20230 transitions. Word has length 413 [2023-11-29 03:16:21,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:16:21,729 INFO L495 AbstractCegarLoop]: Abstraction has 12157 states and 20230 transitions. [2023-11-29 03:16:21,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 25.8125) internal successors, (413), 15 states have internal predecessors, (413), 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 03:16:21,729 INFO L276 IsEmpty]: Start isEmpty. Operand 12157 states and 20230 transitions. [2023-11-29 03:16:21,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2023-11-29 03:16:21,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:16:21,731 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] [2023-11-29 03:16:21,748 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 03:16:21,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:16:21,932 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:16:21,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:16:21,933 INFO L85 PathProgramCache]: Analyzing trace with hash 903875115, now seen corresponding path program 1 times [2023-11-29 03:16:21,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:16:21,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541108090] [2023-11-29 03:16:21,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:16:21,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:16:22,097 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:16:22,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [742590137] [2023-11-29 03:16:22,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:16:22,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:16:22,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:16:22,099 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:16:22,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 03:16:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:16:24,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 2038 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:16:24,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:16:25,064 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 03:16:25,064 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:16:25,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:16:25,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541108090] [2023-11-29 03:16:25,064 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:16:25,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742590137] [2023-11-29 03:16:25,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742590137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:16:25,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:16:25,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:16:25,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898938203] [2023-11-29 03:16:25,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:16:25,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:16:25,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:16:25,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:16:25,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:16:25,066 INFO L87 Difference]: Start difference. First operand 12157 states and 20230 transitions. Second operand has 6 states, 6 states have (on average 69.0) internal successors, (414), 6 states have internal predecessors, (414), 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 03:16:25,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:16:25,684 INFO L93 Difference]: Finished difference Result 35943 states and 59809 transitions. [2023-11-29 03:16:25,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:16:25,685 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 69.0) internal successors, (414), 6 states have internal predecessors, (414), 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 414 [2023-11-29 03:16:25,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:16:25,701 INFO L225 Difference]: With dead ends: 35943 [2023-11-29 03:16:25,701 INFO L226 Difference]: Without dead ends: 24069 [2023-11-29 03:16:25,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:16:25,710 INFO L413 NwaCegarLoop]: 39512 mSDtfsCounter, 38971 mSDsluCounter, 40879 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38971 SdHoareTripleChecker+Valid, 80391 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:16:25,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38971 Valid, 80391 Invalid, 75 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:16:25,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24069 states. [2023-11-29 03:16:26,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24069 to 12186. [2023-11-29 03:16:26,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12186 states, 12185 states have (on average 1.6640951990151827) internal successors, (20277), 12185 states have internal predecessors, (20277), 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 03:16:26,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12186 states to 12186 states and 20277 transitions. [2023-11-29 03:16:26,191 INFO L78 Accepts]: Start accepts. Automaton has 12186 states and 20277 transitions. Word has length 414 [2023-11-29 03:16:26,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:16:26,192 INFO L495 AbstractCegarLoop]: Abstraction has 12186 states and 20277 transitions. [2023-11-29 03:16:26,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.0) internal successors, (414), 6 states have internal predecessors, (414), 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 03:16:26,192 INFO L276 IsEmpty]: Start isEmpty. Operand 12186 states and 20277 transitions. [2023-11-29 03:16:26,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2023-11-29 03:16:26,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:16:26,194 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] [2023-11-29 03:16:26,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 03:16:26,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:16:26,395 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:16:26,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:16:26,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1547712753, now seen corresponding path program 1 times [2023-11-29 03:16:26,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:16:26,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398915105] [2023-11-29 03:16:26,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:16:26,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:16:26,551 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:16:26,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [500829941] [2023-11-29 03:16:26,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:16:26,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:16:26,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:16:26,553 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:16:26,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 03:16:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:16:29,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 2039 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 03:16:29,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:16:29,311 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 03:16:29,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:16:29,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:16:29,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398915105] [2023-11-29 03:16:29,312 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:16:29,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500829941] [2023-11-29 03:16:29,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500829941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:16:29,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:16:29,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 03:16:29,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643965597] [2023-11-29 03:16:29,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:16:29,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:16:29,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:16:29,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:16:29,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:16:29,315 INFO L87 Difference]: Start difference. First operand 12186 states and 20277 transitions. Second operand has 7 states, 7 states have (on average 59.142857142857146) internal successors, (414), 7 states have internal predecessors, (414), 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 03:16:29,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:16:29,955 INFO L93 Difference]: Finished difference Result 36006 states and 59905 transitions. [2023-11-29 03:16:29,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 03:16:29,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 59.142857142857146) internal successors, (414), 7 states have internal predecessors, (414), 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 414 [2023-11-29 03:16:29,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:16:29,971 INFO L225 Difference]: With dead ends: 36006 [2023-11-29 03:16:29,971 INFO L226 Difference]: Without dead ends: 24103 [2023-11-29 03:16:29,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 408 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 03:16:29,980 INFO L413 NwaCegarLoop]: 20155 mSDtfsCounter, 19508 mSDsluCounter, 100572 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19508 SdHoareTripleChecker+Valid, 120727 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:16:29,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19508 Valid, 120727 Invalid, 72 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:16:30,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24103 states. [2023-11-29 03:16:30,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24103 to 12196. [2023-11-29 03:16:30,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12196 states, 12195 states have (on average 1.6637146371463714) internal successors, (20289), 12195 states have internal predecessors, (20289), 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 03:16:30,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12196 states to 12196 states and 20289 transitions. [2023-11-29 03:16:30,267 INFO L78 Accepts]: Start accepts. Automaton has 12196 states and 20289 transitions. Word has length 414 [2023-11-29 03:16:30,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:16:30,268 INFO L495 AbstractCegarLoop]: Abstraction has 12196 states and 20289 transitions. [2023-11-29 03:16:30,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 59.142857142857146) internal successors, (414), 7 states have internal predecessors, (414), 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 03:16:30,268 INFO L276 IsEmpty]: Start isEmpty. Operand 12196 states and 20289 transitions. [2023-11-29 03:16:30,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2023-11-29 03:16:30,270 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:16:30,270 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] [2023-11-29 03:16:30,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 03:16:30,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 03:16:30,471 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:16:30,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:16:30,472 INFO L85 PathProgramCache]: Analyzing trace with hash 805461373, now seen corresponding path program 1 times [2023-11-29 03:16:30,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:16:30,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737314137] [2023-11-29 03:16:30,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:16:30,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:16:30,629 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:16:30,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1335244279] [2023-11-29 03:16:30,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:16:30,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:16:30,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:16:30,633 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:16:30,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 03:16:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:16:33,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 2038 conjuncts, 112 conjunts are in the unsatisfiable core [2023-11-29 03:16:33,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:16:34,422 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 03:16:34,422 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:16:34,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:16:34,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737314137] [2023-11-29 03:16:34,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:16:34,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335244279] [2023-11-29 03:16:34,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335244279] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:16:34,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:16:34,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:16:34,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831681930] [2023-11-29 03:16:34,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:16:34,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:16:34,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:16:34,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:16:34,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:16:34,425 INFO L87 Difference]: Start difference. First operand 12196 states and 20289 transitions. Second operand has 5 states, 5 states have (on average 82.8) internal successors, (414), 4 states have internal predecessors, (414), 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 03:16:35,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:16:35,435 INFO L93 Difference]: Finished difference Result 24109 states and 40107 transitions. [2023-11-29 03:16:35,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:16:35,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 82.8) internal successors, (414), 4 states have internal predecessors, (414), 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 414 [2023-11-29 03:16:35,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:16:35,444 INFO L225 Difference]: With dead ends: 24109 [2023-11-29 03:16:35,444 INFO L226 Difference]: Without dead ends: 12196 [2023-11-29 03:16:35,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 410 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 03:16:35,450 INFO L413 NwaCegarLoop]: 19658 mSDtfsCounter, 19731 mSDsluCounter, 39309 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19731 SdHoareTripleChecker+Valid, 58967 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:16:35,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19731 Valid, 58967 Invalid, 960 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:16:35,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12196 states. [2023-11-29 03:16:35,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12196 to 12196. [2023-11-29 03:16:35,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12196 states, 12195 states have (on average 1.6636326363263632) internal successors, (20288), 12195 states have internal predecessors, (20288), 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 03:16:35,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12196 states to 12196 states and 20288 transitions. [2023-11-29 03:16:35,559 INFO L78 Accepts]: Start accepts. Automaton has 12196 states and 20288 transitions. Word has length 414 [2023-11-29 03:16:35,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:16:35,559 INFO L495 AbstractCegarLoop]: Abstraction has 12196 states and 20288 transitions. [2023-11-29 03:16:35,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.8) internal successors, (414), 4 states have internal predecessors, (414), 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 03:16:35,559 INFO L276 IsEmpty]: Start isEmpty. Operand 12196 states and 20288 transitions. [2023-11-29 03:16:35,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2023-11-29 03:16:35,561 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:16:35,562 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] [2023-11-29 03:16:35,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 03:16:35,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:16:35,762 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:16:35,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:16:35,763 INFO L85 PathProgramCache]: Analyzing trace with hash -2122673769, now seen corresponding path program 1 times [2023-11-29 03:16:35,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:16:35,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544465286] [2023-11-29 03:16:35,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:16:35,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:16:35,951 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:16:35,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998227266] [2023-11-29 03:16:35,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:16:35,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:16:35,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:16:35,954 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:16:35,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 03:16:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:16:38,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 2038 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-29 03:16:38,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:16:41,298 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 03:16:41,298 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:16:41,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:16:41,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544465286] [2023-11-29 03:16:41,299 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:16:41,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998227266] [2023-11-29 03:16:41,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998227266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:16:41,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:16:41,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 03:16:41,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747481874] [2023-11-29 03:16:41,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:16:41,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:16:41,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:16:41,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:16:41,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:16:41,301 INFO L87 Difference]: Start difference. First operand 12196 states and 20288 transitions. Second operand has 12 states, 12 states have (on average 34.5) internal successors, (414), 11 states have internal predecessors, (414), 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 03:17:20,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:20,141 INFO L93 Difference]: Finished difference Result 107074 states and 178130 transitions. [2023-11-29 03:17:20,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 03:17:20,142 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 34.5) internal successors, (414), 11 states have internal predecessors, (414), 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 414 [2023-11-29 03:17:20,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:20,188 INFO L225 Difference]: With dead ends: 107074 [2023-11-29 03:17:20,188 INFO L226 Difference]: Without dead ends: 95161 [2023-11-29 03:17:20,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=562, Invalid=2194, Unknown=0, NotChecked=0, Total=2756 [2023-11-29 03:17:20,201 INFO L413 NwaCegarLoop]: 33787 mSDtfsCounter, 329663 mSDsluCounter, 220163 mSDsCounter, 0 mSdLazyCounter, 46744 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329663 SdHoareTripleChecker+Valid, 253950 SdHoareTripleChecker+Invalid, 46746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:20,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329663 Valid, 253950 Invalid, 46746 Unknown, 0 Unchecked, 1.0s Time], IncrementalHoareTripleChecker [2 Valid, 46744 Invalid, 0 Unknown, 0 Unchecked, 34.4s Time] [2023-11-29 03:17:20,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95161 states. [2023-11-29 03:17:20,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95161 to 12199. [2023-11-29 03:17:20,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12199 states, 12198 states have (on average 1.6634694212165928) internal successors, (20291), 12198 states have internal predecessors, (20291), 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 03:17:20,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12199 states to 12199 states and 20291 transitions. [2023-11-29 03:17:20,496 INFO L78 Accepts]: Start accepts. Automaton has 12199 states and 20291 transitions. Word has length 414 [2023-11-29 03:17:20,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:20,496 INFO L495 AbstractCegarLoop]: Abstraction has 12199 states and 20291 transitions. [2023-11-29 03:17:20,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 34.5) internal successors, (414), 11 states have internal predecessors, (414), 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 03:17:20,496 INFO L276 IsEmpty]: Start isEmpty. Operand 12199 states and 20291 transitions. [2023-11-29 03:17:20,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2023-11-29 03:17:20,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:20,500 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] [2023-11-29 03:17:20,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 03:17:20,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 03:17:20,700 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:20,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:20,701 INFO L85 PathProgramCache]: Analyzing trace with hash -347666407, now seen corresponding path program 1 times [2023-11-29 03:17:20,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:20,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128469568] [2023-11-29 03:17:20,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:20,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:20,861 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:17:20,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [558049249] [2023-11-29 03:17:20,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:20,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:20,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:20,862 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:20,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 03:17:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:23,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 2039 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 03:17:23,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:24,631 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 03:17:24,631 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:24,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:24,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128469568] [2023-11-29 03:17:24,632 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:17:24,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558049249] [2023-11-29 03:17:24,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558049249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:24,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:24,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 03:17:24,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144453450] [2023-11-29 03:17:24,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:24,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 03:17:24,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:24,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 03:17:24,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:17:24,634 INFO L87 Difference]: Start difference. First operand 12199 states and 20291 transitions. Second operand has 13 states, 13 states have (on average 31.846153846153847) internal successors, (414), 12 states have internal predecessors, (414), 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 03:17:42,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:17:42,163 INFO L93 Difference]: Finished difference Result 47839 states and 79575 transitions. [2023-11-29 03:17:42,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 03:17:42,164 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 31.846153846153847) internal successors, (414), 12 states have internal predecessors, (414), 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 414 [2023-11-29 03:17:42,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:17:42,185 INFO L225 Difference]: With dead ends: 47839 [2023-11-29 03:17:42,185 INFO L226 Difference]: Without dead ends: 35923 [2023-11-29 03:17:42,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 402 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 03:17:42,194 INFO L413 NwaCegarLoop]: 18192 mSDtfsCounter, 154880 mSDsluCounter, 178533 mSDsCounter, 0 mSdLazyCounter, 25194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154880 SdHoareTripleChecker+Valid, 196725 SdHoareTripleChecker+Invalid, 25196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.7s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:17:42,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154880 Valid, 196725 Invalid, 25196 Unknown, 0 Unchecked, 0.7s Time], IncrementalHoareTripleChecker [2 Valid, 25194 Invalid, 0 Unknown, 0 Unchecked, 15.5s Time] [2023-11-29 03:17:42,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35923 states. [2023-11-29 03:17:42,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35923 to 12208. [2023-11-29 03:17:42,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12208 states, 12207 states have (on average 1.6630621774391743) internal successors, (20301), 12207 states have internal predecessors, (20301), 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 03:17:42,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12208 states to 12208 states and 20301 transitions. [2023-11-29 03:17:42,368 INFO L78 Accepts]: Start accepts. Automaton has 12208 states and 20301 transitions. Word has length 414 [2023-11-29 03:17:42,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:17:42,369 INFO L495 AbstractCegarLoop]: Abstraction has 12208 states and 20301 transitions. [2023-11-29 03:17:42,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 31.846153846153847) internal successors, (414), 12 states have internal predecessors, (414), 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 03:17:42,369 INFO L276 IsEmpty]: Start isEmpty. Operand 12208 states and 20301 transitions. [2023-11-29 03:17:42,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2023-11-29 03:17:42,371 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:17:42,371 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] [2023-11-29 03:17:42,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-29 03:17:42,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 03:17:42,572 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:17:42,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:17:42,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1305140033, now seen corresponding path program 1 times [2023-11-29 03:17:42,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:17:42,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090994260] [2023-11-29 03:17:42,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:42,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:17:42,721 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:17:42,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082756976] [2023-11-29 03:17:42,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:17:42,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:17:42,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:17:42,722 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:17:42,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 03:17:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:17:45,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 2039 conjuncts, 134 conjunts are in the unsatisfiable core [2023-11-29 03:17:45,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:17:46,549 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 03:17:46,549 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:17:46,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:17:46,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090994260] [2023-11-29 03:17:46,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:17:46,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082756976] [2023-11-29 03:17:46,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082756976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:17:46,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:17:46,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2023-11-29 03:17:46,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244662524] [2023-11-29 03:17:46,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:17:46,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 03:17:46,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:17:46,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 03:17:46,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2023-11-29 03:17:46,552 INFO L87 Difference]: Start difference. First operand 12208 states and 20301 transitions. Second operand has 27 states, 27 states have (on average 15.333333333333334) internal successors, (414), 26 states have internal predecessors, (414), 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 03:18:47,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:18:47,316 INFO L93 Difference]: Finished difference Result 406188 states and 675271 transitions. [2023-11-29 03:18:47,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2023-11-29 03:18:47,316 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 15.333333333333334) internal successors, (414), 26 states have internal predecessors, (414), 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 414 [2023-11-29 03:18:47,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:18:47,638 INFO L225 Difference]: With dead ends: 406188 [2023-11-29 03:18:47,638 INFO L226 Difference]: Without dead ends: 394263 [2023-11-29 03:18:47,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 401 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72012 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=12939, Invalid=149067, Unknown=0, NotChecked=0, Total=162006 [2023-11-29 03:18:47,701 INFO L413 NwaCegarLoop]: 19832 mSDtfsCounter, 3748034 mSDsluCounter, 430100 mSDsCounter, 0 mSdLazyCounter, 9899 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3748034 SdHoareTripleChecker+Valid, 449932 SdHoareTripleChecker+Invalid, 10052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.9s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 9899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:18:47,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3748034 Valid, 449932 Invalid, 10052 Unknown, 0 Unchecked, 3.9s Time], IncrementalHoareTripleChecker [153 Valid, 9899 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-11-29 03:18:47,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394263 states. [2023-11-29 03:18:48,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394263 to 12393. [2023-11-29 03:18:48,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12393 states, 12392 states have (on average 1.6609102646868947) internal successors, (20582), 12392 states have internal predecessors, (20582), 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 03:18:48,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12393 states to 12393 states and 20582 transitions. [2023-11-29 03:18:48,913 INFO L78 Accepts]: Start accepts. Automaton has 12393 states and 20582 transitions. Word has length 414 [2023-11-29 03:18:48,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:18:48,913 INFO L495 AbstractCegarLoop]: Abstraction has 12393 states and 20582 transitions. [2023-11-29 03:18:48,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 15.333333333333334) internal successors, (414), 26 states have internal predecessors, (414), 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 03:18:48,914 INFO L276 IsEmpty]: Start isEmpty. Operand 12393 states and 20582 transitions. [2023-11-29 03:18:48,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-11-29 03:18:48,917 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:18:48,918 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] [2023-11-29 03:18:48,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 03:18:49,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 03:18:49,119 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:18:49,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:18:49,119 INFO L85 PathProgramCache]: Analyzing trace with hash -552194701, now seen corresponding path program 1 times [2023-11-29 03:18:49,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:18:49,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995220841] [2023-11-29 03:18:49,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:49,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:18:49,403 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:18:49,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1845292363] [2023-11-29 03:18:49,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:18:49,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:18:49,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:18:49,404 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:18:49,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 03:18:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:18:52,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 2042 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 03:18:52,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:18:53,662 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 03:18:53,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:18:53,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:18:53,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995220841] [2023-11-29 03:18:53,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:18:53,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845292363] [2023-11-29 03:18:53,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845292363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:18:53,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:18:53,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 03:18:53,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555806190] [2023-11-29 03:18:53,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:18:53,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:18:53,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:18:53,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:18:53,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:18:53,665 INFO L87 Difference]: Start difference. First operand 12393 states and 20582 transitions. Second operand has 9 states, 9 states have (on average 46.111111111111114) internal successors, (415), 8 states have internal predecessors, (415), 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 03:19:02,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:19:02,532 INFO L93 Difference]: Finished difference Result 61743 states and 102473 transitions. [2023-11-29 03:19:02,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 03:19:02,532 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 46.111111111111114) internal successors, (415), 8 states have internal predecessors, (415), 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 415 [2023-11-29 03:19:02,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:19:02,563 INFO L225 Difference]: With dead ends: 61743 [2023-11-29 03:19:02,563 INFO L226 Difference]: Without dead ends: 49633 [2023-11-29 03:19:02,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=353, Unknown=0, NotChecked=0, Total=506 [2023-11-29 03:19:02,647 INFO L413 NwaCegarLoop]: 38255 mSDtfsCounter, 137049 mSDsluCounter, 135195 mSDsCounter, 0 mSdLazyCounter, 8084 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137049 SdHoareTripleChecker+Valid, 173450 SdHoareTripleChecker+Invalid, 8086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:19:02,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137049 Valid, 173450 Invalid, 8086 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [2 Valid, 8084 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-11-29 03:19:02,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49633 states. [2023-11-29 03:19:02,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49633 to 12393. [2023-11-29 03:19:02,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12393 states, 12392 states have (on average 1.6609102646868947) internal successors, (20582), 12392 states have internal predecessors, (20582), 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 03:19:02,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12393 states to 12393 states and 20582 transitions. [2023-11-29 03:19:02,843 INFO L78 Accepts]: Start accepts. Automaton has 12393 states and 20582 transitions. Word has length 415 [2023-11-29 03:19:02,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:19:02,843 INFO L495 AbstractCegarLoop]: Abstraction has 12393 states and 20582 transitions. [2023-11-29 03:19:02,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 46.111111111111114) internal successors, (415), 8 states have internal predecessors, (415), 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 03:19:02,843 INFO L276 IsEmpty]: Start isEmpty. Operand 12393 states and 20582 transitions. [2023-11-29 03:19:02,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-11-29 03:19:02,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:19:02,846 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] [2023-11-29 03:19:02,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 03:19:03,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 03:19:03,047 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:19:03,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:19:03,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1222812661, now seen corresponding path program 1 times [2023-11-29 03:19:03,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:19:03,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327436418] [2023-11-29 03:19:03,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:19:03,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:19:03,219 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:19:03,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [132773773] [2023-11-29 03:19:03,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:19:03,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:19:03,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:19:03,220 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:19:03,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 03:19:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:05,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 2043 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 03:19:06,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:19:06,639 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 03:19:06,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:19:06,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:19:06,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327436418] [2023-11-29 03:19:06,640 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:19:06,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132773773] [2023-11-29 03:19:06,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132773773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:19:06,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:19:06,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 03:19:06,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258269994] [2023-11-29 03:19:06,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:19:06,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 03:19:06,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:19:06,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 03:19:06,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-29 03:19:06,642 INFO L87 Difference]: Start difference. First operand 12393 states and 20582 transitions. Second operand has 15 states, 15 states have (on average 27.666666666666668) internal successors, (415), 14 states have internal predecessors, (415), 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 03:19:32,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:19:32,328 INFO L93 Difference]: Finished difference Result 72479 states and 120211 transitions. [2023-11-29 03:19:32,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-29 03:19:32,328 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 27.666666666666668) internal successors, (415), 14 states have internal predecessors, (415), 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 415 [2023-11-29 03:19:32,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:19:32,358 INFO L225 Difference]: With dead ends: 72479 [2023-11-29 03:19:32,359 INFO L226 Difference]: Without dead ends: 60369 [2023-11-29 03:19:32,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=563, Invalid=2299, Unknown=0, NotChecked=0, Total=2862 [2023-11-29 03:19:32,367 INFO L413 NwaCegarLoop]: 36547 mSDtfsCounter, 173819 mSDsluCounter, 396430 mSDsCounter, 0 mSdLazyCounter, 37441 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173819 SdHoareTripleChecker+Valid, 432977 SdHoareTripleChecker+Invalid, 37954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.3s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 37441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:19:32,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173819 Valid, 432977 Invalid, 37954 Unknown, 0 Unchecked, 1.3s Time], IncrementalHoareTripleChecker [513 Valid, 37441 Invalid, 0 Unknown, 0 Unchecked, 21.1s Time] [2023-11-29 03:19:32,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60369 states. [2023-11-29 03:19:32,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60369 to 35819. [2023-11-29 03:19:32,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35819 states, 35818 states have (on average 1.6576581607013234) internal successors, (59374), 35818 states have internal predecessors, (59374), 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 03:19:32,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35819 states to 35819 states and 59374 transitions. [2023-11-29 03:19:32,825 INFO L78 Accepts]: Start accepts. Automaton has 35819 states and 59374 transitions. Word has length 415 [2023-11-29 03:19:32,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:19:32,825 INFO L495 AbstractCegarLoop]: Abstraction has 35819 states and 59374 transitions. [2023-11-29 03:19:32,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 27.666666666666668) internal successors, (415), 14 states have internal predecessors, (415), 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 03:19:32,826 INFO L276 IsEmpty]: Start isEmpty. Operand 35819 states and 59374 transitions. [2023-11-29 03:19:32,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-11-29 03:19:32,828 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:19:32,828 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] [2023-11-29 03:19:32,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 03:19:33,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 03:19:33,029 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:19:33,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:19:33,029 INFO L85 PathProgramCache]: Analyzing trace with hash 124198875, now seen corresponding path program 1 times [2023-11-29 03:19:33,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:19:33,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528586283] [2023-11-29 03:19:33,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:19:33,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:19:33,189 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:19:33,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088436831] [2023-11-29 03:19:33,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:19:33,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:19:33,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:19:33,190 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:19:33,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 03:19:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:35,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 2043 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 03:19:35,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:19:36,870 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 03:19:36,871 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:19:36,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:19:36,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528586283] [2023-11-29 03:19:36,871 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:19:36,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088436831] [2023-11-29 03:19:36,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088436831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:19:36,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:19:36,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 03:19:36,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673339231] [2023-11-29 03:19:36,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:19:36,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 03:19:36,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:19:36,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:19:36,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:19:36,873 INFO L87 Difference]: Start difference. First operand 35819 states and 59374 transitions. Second operand has 9 states, 9 states have (on average 46.111111111111114) internal successors, (415), 8 states have internal predecessors, (415), 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 03:19:48,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:19:48,541 INFO L93 Difference]: Finished difference Result 108358 states and 179539 transitions. [2023-11-29 03:19:48,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 03:19:48,541 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 46.111111111111114) internal successors, (415), 8 states have internal predecessors, (415), 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 415 [2023-11-29 03:19:48,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:19:48,582 INFO L225 Difference]: With dead ends: 108358 [2023-11-29 03:19:48,582 INFO L226 Difference]: Without dead ends: 72420 [2023-11-29 03:19:48,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2023-11-29 03:19:48,598 INFO L413 NwaCegarLoop]: 18520 mSDtfsCounter, 117068 mSDsluCounter, 72709 mSDsCounter, 0 mSdLazyCounter, 11420 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117068 SdHoareTripleChecker+Valid, 91229 SdHoareTripleChecker+Invalid, 11421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:19:48,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117068 Valid, 91229 Invalid, 11421 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [1 Valid, 11420 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2023-11-29 03:19:48,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72420 states. [2023-11-29 03:19:49,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72420 to 36118. [2023-11-29 03:19:49,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36118 states, 36117 states have (on average 1.6573635684026913) internal successors, (59859), 36117 states have internal predecessors, (59859), 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 03:19:49,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36118 states to 36118 states and 59859 transitions. [2023-11-29 03:19:49,191 INFO L78 Accepts]: Start accepts. Automaton has 36118 states and 59859 transitions. Word has length 415 [2023-11-29 03:19:49,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:19:49,191 INFO L495 AbstractCegarLoop]: Abstraction has 36118 states and 59859 transitions. [2023-11-29 03:19:49,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 46.111111111111114) internal successors, (415), 8 states have internal predecessors, (415), 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 03:19:49,191 INFO L276 IsEmpty]: Start isEmpty. Operand 36118 states and 59859 transitions. [2023-11-29 03:19:49,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-11-29 03:19:49,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:19:49,195 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] [2023-11-29 03:19:49,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 03:19:49,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:19:49,396 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:19:49,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:19:49,396 INFO L85 PathProgramCache]: Analyzing trace with hash -137010943, now seen corresponding path program 1 times [2023-11-29 03:19:49,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:19:49,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020814640] [2023-11-29 03:19:49,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:19:49,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:19:49,554 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:19:49,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725448546] [2023-11-29 03:19:49,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:19:49,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:19:49,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:19:49,555 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:19:49,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 03:19:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:19:52,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 2043 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-29 03:19:52,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:19:53,735 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 03:19:53,735 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:19:53,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:19:53,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020814640] [2023-11-29 03:19:53,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:19:53,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725448546] [2023-11-29 03:19:53,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725448546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:19:53,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:19:53,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-29 03:19:53,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179645813] [2023-11-29 03:19:53,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:19:53,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 03:19:53,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:19:53,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 03:19:53,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:19:53,738 INFO L87 Difference]: Start difference. First operand 36118 states and 59859 transitions. Second operand has 16 states, 16 states have (on average 25.9375) internal successors, (415), 15 states have internal predecessors, (415), 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 03:20:57,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:20:57,120 INFO L93 Difference]: Finished difference Result 166674 states and 275805 transitions. [2023-11-29 03:20:57,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-11-29 03:20:57,120 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 25.9375) internal successors, (415), 15 states have internal predecessors, (415), 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 415 [2023-11-29 03:20:57,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:20:57,199 INFO L225 Difference]: With dead ends: 166674 [2023-11-29 03:20:57,199 INFO L226 Difference]: Without dead ends: 130651 [2023-11-29 03:20:57,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1281 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=804, Invalid=3888, Unknown=0, NotChecked=0, Total=4692 [2023-11-29 03:20:57,219 INFO L413 NwaCegarLoop]: 51990 mSDtfsCounter, 174203 mSDsluCounter, 564195 mSDsCounter, 0 mSdLazyCounter, 97165 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174203 SdHoareTripleChecker+Valid, 616185 SdHoareTripleChecker+Invalid, 97358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.9s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 97165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:20:57,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174203 Valid, 616185 Invalid, 97358 Unknown, 0 Unchecked, 1.9s Time], IncrementalHoareTripleChecker [193 Valid, 97165 Invalid, 0 Unknown, 0 Unchecked, 56.7s Time] [2023-11-29 03:20:57,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130651 states. [2023-11-29 03:20:58,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130651 to 47981. [2023-11-29 03:20:58,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47981 states, 47980 states have (on average 1.6533347228011672) internal successors, (79327), 47980 states have internal predecessors, (79327), 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 03:20:58,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47981 states to 47981 states and 79327 transitions. [2023-11-29 03:20:58,181 INFO L78 Accepts]: Start accepts. Automaton has 47981 states and 79327 transitions. Word has length 415 [2023-11-29 03:20:58,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:20:58,181 INFO L495 AbstractCegarLoop]: Abstraction has 47981 states and 79327 transitions. [2023-11-29 03:20:58,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 25.9375) internal successors, (415), 15 states have internal predecessors, (415), 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 03:20:58,181 INFO L276 IsEmpty]: Start isEmpty. Operand 47981 states and 79327 transitions. [2023-11-29 03:20:58,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2023-11-29 03:20:58,184 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:20:58,185 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] [2023-11-29 03:20:58,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-29 03:20:58,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:20:58,385 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:20:58,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:20:58,386 INFO L85 PathProgramCache]: Analyzing trace with hash -2095585729, now seen corresponding path program 1 times [2023-11-29 03:20:58,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:20:58,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193083762] [2023-11-29 03:20:58,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:20:58,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:20:58,546 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:20:58,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [639153745] [2023-11-29 03:20:58,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:20:58,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:20:58,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:58,547 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:20:58,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 03:21:01,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:01,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 2044 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 03:21:01,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:21:02,398 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 03:21:02,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:21:02,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:21:02,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193083762] [2023-11-29 03:21:02,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:21:02,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639153745] [2023-11-29 03:21:02,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639153745] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:21:02,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:21:02,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 03:21:02,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138622960] [2023-11-29 03:21:02,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:21:02,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:21:02,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:21:02,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:21:02,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:21:02,401 INFO L87 Difference]: Start difference. First operand 47981 states and 79327 transitions. Second operand has 10 states, 10 states have (on average 41.5) internal successors, (415), 9 states have internal predecessors, (415), 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 03:21:15,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:21:15,507 INFO L93 Difference]: Finished difference Result 95671 states and 158145 transitions. [2023-11-29 03:21:15,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 03:21:15,508 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 41.5) internal successors, (415), 9 states have internal predecessors, (415), 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 415 [2023-11-29 03:21:15,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:21:15,530 INFO L225 Difference]: With dead ends: 95671 [2023-11-29 03:21:15,530 INFO L226 Difference]: Without dead ends: 47973 [2023-11-29 03:21:15,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2023-11-29 03:21:15,544 INFO L413 NwaCegarLoop]: 18020 mSDtfsCounter, 77799 mSDsluCounter, 124417 mSDsCounter, 0 mSdLazyCounter, 18332 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77799 SdHoareTripleChecker+Valid, 142437 SdHoareTripleChecker+Invalid, 18333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:21:15,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77799 Valid, 142437 Invalid, 18333 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [1 Valid, 18332 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2023-11-29 03:21:15,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47973 states. [2023-11-29 03:21:16,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47973 to 47881. [2023-11-29 03:21:16,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47881 states, 47880 states have (on average 1.6533208020050125) internal successors, (79161), 47880 states have internal predecessors, (79161), 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 03:21:16,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47881 states to 47881 states and 79161 transitions. [2023-11-29 03:21:16,089 INFO L78 Accepts]: Start accepts. Automaton has 47881 states and 79161 transitions. Word has length 415 [2023-11-29 03:21:16,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:21:16,090 INFO L495 AbstractCegarLoop]: Abstraction has 47881 states and 79161 transitions. [2023-11-29 03:21:16,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 41.5) internal successors, (415), 9 states have internal predecessors, (415), 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 03:21:16,090 INFO L276 IsEmpty]: Start isEmpty. Operand 47881 states and 79161 transitions. [2023-11-29 03:21:16,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-11-29 03:21:16,093 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:21:16,093 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] [2023-11-29 03:21:16,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 03:21:16,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 03:21:16,294 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:21:16,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:21:16,294 INFO L85 PathProgramCache]: Analyzing trace with hash -583964417, now seen corresponding path program 1 times [2023-11-29 03:21:16,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:21:16,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980606507] [2023-11-29 03:21:16,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:21:16,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:21:16,451 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:21:16,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1359692339] [2023-11-29 03:21:16,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:21:16,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:21:16,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:21:16,452 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:21:16,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 03:21:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:19,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 2046 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:21:19,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:21:19,945 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 03:21:19,945 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:21:19,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:21:19,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980606507] [2023-11-29 03:21:19,946 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:21:19,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359692339] [2023-11-29 03:21:19,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359692339] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:21:19,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:21:19,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:21:19,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828936755] [2023-11-29 03:21:19,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:21:19,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:21:19,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:21:19,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:21:19,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:21:19,948 INFO L87 Difference]: Start difference. First operand 47881 states and 79161 transitions. Second operand has 5 states, 5 states have (on average 83.2) internal successors, (416), 4 states have internal predecessors, (416), 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 03:21:25,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:21:25,504 INFO L93 Difference]: Finished difference Result 95491 states and 157868 transitions. [2023-11-29 03:21:25,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:21:25,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 83.2) internal successors, (416), 4 states have internal predecessors, (416), 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 416 [2023-11-29 03:21:25,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:21:25,535 INFO L225 Difference]: With dead ends: 95491 [2023-11-29 03:21:25,535 INFO L226 Difference]: Without dead ends: 47893 [2023-11-29 03:21:25,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 412 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 03:21:25,555 INFO L413 NwaCegarLoop]: 17731 mSDtfsCounter, 19577 mSDsluCounter, 35459 mSDsCounter, 0 mSdLazyCounter, 6739 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19577 SdHoareTripleChecker+Valid, 53190 SdHoareTripleChecker+Invalid, 6739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:21:25,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19577 Valid, 53190 Invalid, 6739 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6739 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-29 03:21:25,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47893 states. [2023-11-29 03:21:26,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47893 to 47889. [2023-11-29 03:21:26,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47889 states, 47888 states have (on average 1.6532534246575343) internal successors, (79171), 47888 states have internal predecessors, (79171), 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 03:21:26,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47889 states to 47889 states and 79171 transitions. [2023-11-29 03:21:26,189 INFO L78 Accepts]: Start accepts. Automaton has 47889 states and 79171 transitions. Word has length 416 [2023-11-29 03:21:26,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:21:26,190 INFO L495 AbstractCegarLoop]: Abstraction has 47889 states and 79171 transitions. [2023-11-29 03:21:26,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.2) internal successors, (416), 4 states have internal predecessors, (416), 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 03:21:26,190 INFO L276 IsEmpty]: Start isEmpty. Operand 47889 states and 79171 transitions. [2023-11-29 03:21:26,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2023-11-29 03:21:26,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:21:26,193 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] [2023-11-29 03:21:26,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-29 03:21:26,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 03:21:26,394 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:21:26,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:21:26,394 INFO L85 PathProgramCache]: Analyzing trace with hash -325798979, now seen corresponding path program 1 times [2023-11-29 03:21:26,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:21:26,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129078879] [2023-11-29 03:21:26,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:21:26,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:21:26,549 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:21:26,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [974105216] [2023-11-29 03:21:26,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:21:26,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:21:26,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:21:26,551 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:21:26,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 03:21:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:21:29,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 2047 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-29 03:21:29,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:21:30,764 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 03:21:30,765 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:21:30,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:21:30,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129078879] [2023-11-29 03:21:30,765 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:21:30,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974105216] [2023-11-29 03:21:30,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974105216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:21:30,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:21:30,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-29 03:21:30,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450708032] [2023-11-29 03:21:30,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:21:30,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 03:21:30,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:21:30,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 03:21:30,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:21:30,767 INFO L87 Difference]: Start difference. First operand 47889 states and 79171 transitions. Second operand has 16 states, 16 states have (on average 26.0) internal successors, (416), 15 states have internal predecessors, (416), 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 03:21:39,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:21:44,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:21:48,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:21:52,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:21:56,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:22:02,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:22:07,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:22:08,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:22:08,116 INFO L93 Difference]: Finished difference Result 156022 states and 257992 transitions. [2023-11-29 03:22:08,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 03:22:08,121 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 26.0) internal successors, (416), 15 states have internal predecessors, (416), 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 416 [2023-11-29 03:22:08,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:22:08,203 INFO L225 Difference]: With dead ends: 156022 [2023-11-29 03:22:08,203 INFO L226 Difference]: Without dead ends: 108416 [2023-11-29 03:22:08,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=231, Invalid=825, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 03:22:08,224 INFO L413 NwaCegarLoop]: 20371 mSDtfsCounter, 271532 mSDsluCounter, 297576 mSDsCounter, 0 mSdLazyCounter, 2195 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271532 SdHoareTripleChecker+Valid, 317947 SdHoareTripleChecker+Invalid, 2201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2195 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:22:08,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271532 Valid, 317947 Invalid, 2201 Unknown, 0 Unchecked, 1.0s Time], IncrementalHoareTripleChecker [0 Valid, 2195 Invalid, 6 Unknown, 0 Unchecked, 34.1s Time] [2023-11-29 03:22:08,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108416 states. [2023-11-29 03:22:09,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108416 to 49247. [2023-11-29 03:22:09,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49247 states, 49246 states have (on average 1.651261016123137) internal successors, (81318), 49246 states have internal predecessors, (81318), 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 03:22:09,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49247 states to 49247 states and 81318 transitions. [2023-11-29 03:22:09,141 INFO L78 Accepts]: Start accepts. Automaton has 49247 states and 81318 transitions. Word has length 416 [2023-11-29 03:22:09,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:22:09,141 INFO L495 AbstractCegarLoop]: Abstraction has 49247 states and 81318 transitions. [2023-11-29 03:22:09,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 26.0) internal successors, (416), 15 states have internal predecessors, (416), 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 03:22:09,141 INFO L276 IsEmpty]: Start isEmpty. Operand 49247 states and 81318 transitions. [2023-11-29 03:22:09,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-11-29 03:22:09,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:22:09,145 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] [2023-11-29 03:22:09,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-29 03:22:09,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 03:22:09,345 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:22:09,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:22:09,346 INFO L85 PathProgramCache]: Analyzing trace with hash 899422095, now seen corresponding path program 1 times [2023-11-29 03:22:09,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:22:09,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181288594] [2023-11-29 03:22:09,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:22:09,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:22:09,503 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:22:09,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [811620313] [2023-11-29 03:22:09,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:22:09,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:22:09,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:22:09,505 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:22:09,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 03:22:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:13,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 03:22:13,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:22:14,155 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 03:22:14,156 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:22:14,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:22:14,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181288594] [2023-11-29 03:22:14,156 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:22:14,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811620313] [2023-11-29 03:22:14,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811620313] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:22:14,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:22:14,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:22:14,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452628561] [2023-11-29 03:22:14,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:22:14,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:22:14,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:22:14,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:22:14,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:22:14,158 INFO L87 Difference]: Start difference. First operand 49247 states and 81318 transitions. Second operand has 5 states, 5 states have (on average 83.4) internal successors, (417), 4 states have internal predecessors, (417), 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 03:22:16,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:22:16,115 INFO L93 Difference]: Finished difference Result 98095 states and 161979 transitions. [2023-11-29 03:22:16,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:22:16,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 83.4) internal successors, (417), 4 states have internal predecessors, (417), 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 417 [2023-11-29 03:22:16,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:22:16,147 INFO L225 Difference]: With dead ends: 98095 [2023-11-29 03:22:16,147 INFO L226 Difference]: Without dead ends: 49267 [2023-11-29 03:22:16,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:22:16,161 INFO L413 NwaCegarLoop]: 19413 mSDtfsCounter, 19733 mSDsluCounter, 38822 mSDsCounter, 0 mSdLazyCounter, 1697 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19733 SdHoareTripleChecker+Valid, 58235 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:22:16,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19733 Valid, 58235 Invalid, 1698 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1697 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 03:22:16,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49267 states. [2023-11-29 03:22:16,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49267 to 49262. [2023-11-29 03:22:16,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49262 states, 49261 states have (on average 1.6510627068066015) internal successors, (81333), 49261 states have internal predecessors, (81333), 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 03:22:16,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49262 states to 49262 states and 81333 transitions. [2023-11-29 03:22:16,716 INFO L78 Accepts]: Start accepts. Automaton has 49262 states and 81333 transitions. Word has length 417 [2023-11-29 03:22:16,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:22:16,717 INFO L495 AbstractCegarLoop]: Abstraction has 49262 states and 81333 transitions. [2023-11-29 03:22:16,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.4) internal successors, (417), 4 states have internal predecessors, (417), 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 03:22:16,717 INFO L276 IsEmpty]: Start isEmpty. Operand 49262 states and 81333 transitions. [2023-11-29 03:22:16,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-11-29 03:22:16,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:22:16,720 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] [2023-11-29 03:22:16,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 03:22:16,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 03:22:16,921 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:22:16,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:22:16,921 INFO L85 PathProgramCache]: Analyzing trace with hash 157692119, now seen corresponding path program 1 times [2023-11-29 03:22:16,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:22:16,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008598061] [2023-11-29 03:22:16,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:22:16,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:22:17,149 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:22:17,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [636879940] [2023-11-29 03:22:17,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:22:17,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:22:17,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:22:17,151 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:22:17,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 03:22:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:22:19,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 60 conjunts are in the unsatisfiable core [2023-11-29 03:22:19,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:22:22,124 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 03:22:22,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:22:22,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:22:22,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008598061] [2023-11-29 03:22:22,125 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:22:22,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636879940] [2023-11-29 03:22:22,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636879940] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:22:22,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:22:22,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 03:22:22,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776796623] [2023-11-29 03:22:22,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:22:22,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 03:22:22,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:22:22,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 03:22:22,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-29 03:22:22,127 INFO L87 Difference]: Start difference. First operand 49262 states and 81333 transitions. Second operand has 13 states, 13 states have (on average 32.07692307692308) internal successors, (417), 12 states have internal predecessors, (417), 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 03:22:59,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:22:59,841 INFO L93 Difference]: Finished difference Result 97437 states and 161162 transitions. [2023-11-29 03:22:59,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 03:22:59,842 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 32.07692307692308) internal successors, (417), 12 states have internal predecessors, (417), 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 417 [2023-11-29 03:22:59,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:22:59,869 INFO L225 Difference]: With dead ends: 97437 [2023-11-29 03:22:59,869 INFO L226 Difference]: Without dead ends: 49395 [2023-11-29 03:22:59,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=219, Invalid=837, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 03:22:59,883 INFO L413 NwaCegarLoop]: 33629 mSDtfsCounter, 97306 mSDsluCounter, 283061 mSDsCounter, 0 mSdLazyCounter, 58042 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97306 SdHoareTripleChecker+Valid, 316690 SdHoareTripleChecker+Invalid, 58045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.8s IncrementalHoareTripleChecker+Time [2023-11-29 03:22:59,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97306 Valid, 316690 Invalid, 58045 Unknown, 0 Unchecked, 1.0s Time], IncrementalHoareTripleChecker [3 Valid, 58042 Invalid, 0 Unknown, 0 Unchecked, 34.8s Time] [2023-11-29 03:22:59,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49395 states. [2023-11-29 03:23:00,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49395 to 37193. [2023-11-29 03:23:00,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37193 states, 37192 states have (on average 1.6547106904710691) internal successors, (61542), 37192 states have internal predecessors, (61542), 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 03:23:00,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37193 states to 37193 states and 61542 transitions. [2023-11-29 03:23:00,378 INFO L78 Accepts]: Start accepts. Automaton has 37193 states and 61542 transitions. Word has length 417 [2023-11-29 03:23:00,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:23:00,378 INFO L495 AbstractCegarLoop]: Abstraction has 37193 states and 61542 transitions. [2023-11-29 03:23:00,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 32.07692307692308) internal successors, (417), 12 states have internal predecessors, (417), 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 03:23:00,378 INFO L276 IsEmpty]: Start isEmpty. Operand 37193 states and 61542 transitions. [2023-11-29 03:23:00,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-11-29 03:23:00,381 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:23:00,381 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] [2023-11-29 03:23:00,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 03:23:00,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 03:23:00,582 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:23:00,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:23:00,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1581482899, now seen corresponding path program 1 times [2023-11-29 03:23:00,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:23:00,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424837288] [2023-11-29 03:23:00,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:23:00,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:23:00,747 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:23:00,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [824010380] [2023-11-29 03:23:00,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:23:00,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:23:00,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:23:00,748 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:23:00,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 03:23:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:03,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-29 03:23:03,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:23:04,933 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 03:23:04,933 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:23:04,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:23:04,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424837288] [2023-11-29 03:23:04,933 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:23:04,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824010380] [2023-11-29 03:23:04,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824010380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:23:04,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:23:04,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 03:23:04,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499017983] [2023-11-29 03:23:04,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:23:04,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 03:23:04,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:23:04,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 03:23:04,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-29 03:23:04,936 INFO L87 Difference]: Start difference. First operand 37193 states and 61542 transitions. Second operand has 10 states, 10 states have (on average 41.7) internal successors, (417), 9 states have internal predecessors, (417), 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 03:23:15,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.68s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:23:20,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:23:24,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:23:24,146 INFO L93 Difference]: Finished difference Result 141705 states and 234962 transitions. [2023-11-29 03:23:24,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 03:23:24,147 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 41.7) internal successors, (417), 9 states have internal predecessors, (417), 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 417 [2023-11-29 03:23:24,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:23:24,242 INFO L225 Difference]: With dead ends: 141705 [2023-11-29 03:23:24,242 INFO L226 Difference]: Without dead ends: 105336 [2023-11-29 03:23:24,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-11-29 03:23:24,275 INFO L413 NwaCegarLoop]: 38654 mSDtfsCounter, 97387 mSDsluCounter, 192676 mSDsCounter, 0 mSdLazyCounter, 4914 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97387 SdHoareTripleChecker+Valid, 231330 SdHoareTripleChecker+Invalid, 4916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4914 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:23:24,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97387 Valid, 231330 Invalid, 4916 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [1 Valid, 4914 Invalid, 1 Unknown, 0 Unchecked, 17.4s Time] [2023-11-29 03:23:24,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105336 states. [2023-11-29 03:23:25,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105336 to 37406. [2023-11-29 03:23:25,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37406 states, 37405 states have (on average 1.6538698035022057) internal successors, (61863), 37405 states have internal predecessors, (61863), 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 03:23:25,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37406 states to 37406 states and 61863 transitions. [2023-11-29 03:23:25,113 INFO L78 Accepts]: Start accepts. Automaton has 37406 states and 61863 transitions. Word has length 417 [2023-11-29 03:23:25,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:23:25,114 INFO L495 AbstractCegarLoop]: Abstraction has 37406 states and 61863 transitions. [2023-11-29 03:23:25,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 41.7) internal successors, (417), 9 states have internal predecessors, (417), 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 03:23:25,114 INFO L276 IsEmpty]: Start isEmpty. Operand 37406 states and 61863 transitions. [2023-11-29 03:23:25,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-11-29 03:23:25,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:23:25,117 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] [2023-11-29 03:23:25,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-29 03:23:25,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 03:23:25,318 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:23:25,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:23:25,318 INFO L85 PathProgramCache]: Analyzing trace with hash -603676211, now seen corresponding path program 1 times [2023-11-29 03:23:25,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:23:25,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269919273] [2023-11-29 03:23:25,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:23:25,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:23:25,478 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:23:25,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1319021536] [2023-11-29 03:23:25,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:23:25,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:23:25,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:23:25,479 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:23:25,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 03:23:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:23:28,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 2048 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 03:23:28,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:23:29,637 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 03:23:29,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:23:29,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:23:29,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269919273] [2023-11-29 03:23:29,638 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:23:29,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319021536] [2023-11-29 03:23:29,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319021536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:23:29,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:23:29,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 03:23:29,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334751670] [2023-11-29 03:23:29,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:23:29,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 03:23:29,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:23:29,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 03:23:29,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 03:23:29,640 INFO L87 Difference]: Start difference. First operand 37406 states and 61863 transitions. Second operand has 8 states, 8 states have (on average 52.125) internal successors, (417), 7 states have internal predecessors, (417), 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 03:23:36,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:23:40,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:23:44,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:23:50,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:23:55,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:23:55,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:23:55,583 INFO L93 Difference]: Finished difference Result 133358 states and 220956 transitions. [2023-11-29 03:23:55,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:23:55,586 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 52.125) internal successors, (417), 7 states have internal predecessors, (417), 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 417 [2023-11-29 03:23:55,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:23:55,651 INFO L225 Difference]: With dead ends: 133358 [2023-11-29 03:23:55,652 INFO L226 Difference]: Without dead ends: 97603 [2023-11-29 03:23:55,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:23:55,682 INFO L413 NwaCegarLoop]: 20382 mSDtfsCounter, 194666 mSDsluCounter, 100310 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194666 SdHoareTripleChecker+Valid, 120692 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:23:55,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194666 Valid, 120692 Invalid, 764 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [1 Valid, 758 Invalid, 5 Unknown, 0 Unchecked, 24.7s Time] [2023-11-29 03:23:55,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97603 states. [2023-11-29 03:23:56,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97603 to 37412. [2023-11-29 03:23:56,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37412 states, 37411 states have (on average 1.6538183956590307) internal successors, (61871), 37411 states have internal predecessors, (61871), 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 03:23:56,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37412 states to 37412 states and 61871 transitions. [2023-11-29 03:23:56,557 INFO L78 Accepts]: Start accepts. Automaton has 37412 states and 61871 transitions. Word has length 417 [2023-11-29 03:23:56,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:23:56,557 INFO L495 AbstractCegarLoop]: Abstraction has 37412 states and 61871 transitions. [2023-11-29 03:23:56,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 52.125) internal successors, (417), 7 states have internal predecessors, (417), 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 03:23:56,558 INFO L276 IsEmpty]: Start isEmpty. Operand 37412 states and 61871 transitions. [2023-11-29 03:23:56,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-11-29 03:23:56,560 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:23:56,561 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] [2023-11-29 03:23:56,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 03:23:56,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 03:23:56,761 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:23:56,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:23:56,762 INFO L85 PathProgramCache]: Analyzing trace with hash -996703221, now seen corresponding path program 1 times [2023-11-29 03:23:56,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:23:56,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827249232] [2023-11-29 03:23:56,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:23:56,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:23:56,929 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:23:56,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1950938721] [2023-11-29 03:23:56,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:23:56,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:23:56,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:23:56,930 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:23:56,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 03:24:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:24:00,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-29 03:24:00,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:24:03,676 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 03:24:03,676 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:24:03,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:24:03,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827249232] [2023-11-29 03:24:03,676 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:24:03,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950938721] [2023-11-29 03:24:03,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950938721] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:24:03,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:24:03,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 03:24:03,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756449280] [2023-11-29 03:24:03,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:24:03,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 03:24:03,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:24:03,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 03:24:03,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-29 03:24:03,678 INFO L87 Difference]: Start difference. First operand 37412 states and 61871 transitions. Second operand has 11 states, 11 states have (on average 37.90909090909091) internal successors, (417), 10 states have internal predecessors, (417), 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 03:24:13,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:24:17,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:24:21,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:24:23,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:24:33,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:24:35,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 03:24:37,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:24:37,080 INFO L93 Difference]: Finished difference Result 132212 states and 219152 transitions. [2023-11-29 03:24:37,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 03:24:37,080 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 37.90909090909091) internal successors, (417), 10 states have internal predecessors, (417), 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 417 [2023-11-29 03:24:37,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:24:37,143 INFO L225 Difference]: With dead ends: 132212 [2023-11-29 03:24:37,143 INFO L226 Difference]: Without dead ends: 96457 [2023-11-29 03:24:37,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2023-11-29 03:24:37,167 INFO L413 NwaCegarLoop]: 19499 mSDtfsCounter, 252282 mSDsluCounter, 134587 mSDsCounter, 0 mSdLazyCounter, 7862 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252282 SdHoareTripleChecker+Valid, 154086 SdHoareTripleChecker+Invalid, 7868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7862 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.4s IncrementalHoareTripleChecker+Time [2023-11-29 03:24:37,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252282 Valid, 154086 Invalid, 7868 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [2 Valid, 7862 Invalid, 4 Unknown, 0 Unchecked, 31.4s Time] [2023-11-29 03:24:37,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96457 states. [2023-11-29 03:24:37,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96457 to 37420. [2023-11-29 03:24:37,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37420 states, 37419 states have (on average 1.6537587856436569) internal successors, (61882), 37419 states have internal predecessors, (61882), 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 03:24:37,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37420 states to 37420 states and 61882 transitions. [2023-11-29 03:24:37,850 INFO L78 Accepts]: Start accepts. Automaton has 37420 states and 61882 transitions. Word has length 417 [2023-11-29 03:24:37,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:24:37,850 INFO L495 AbstractCegarLoop]: Abstraction has 37420 states and 61882 transitions. [2023-11-29 03:24:37,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 37.90909090909091) internal successors, (417), 10 states have internal predecessors, (417), 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 03:24:37,851 INFO L276 IsEmpty]: Start isEmpty. Operand 37420 states and 61882 transitions. [2023-11-29 03:24:37,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-11-29 03:24:37,853 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:24:37,854 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] [2023-11-29 03:24:37,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 03:24:38,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 03:24:38,054 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:24:38,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:24:38,055 INFO L85 PathProgramCache]: Analyzing trace with hash 778304141, now seen corresponding path program 1 times [2023-11-29 03:24:38,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:24:38,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828650205] [2023-11-29 03:24:38,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:24:38,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:24:38,240 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:24:38,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [497253210] [2023-11-29 03:24:38,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:24:38,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:24:38,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:24:38,242 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:24:38,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea0908a4-3a7b-4fd8-a566-c1909541e56b/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 03:24:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:24:41,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 2050 conjuncts, 95 conjunts are in the unsatisfiable core [2023-11-29 03:24:41,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:24:45,946 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 03:24:45,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:24:45,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:24:45,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828650205] [2023-11-29 03:24:45,946 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:24:45,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497253210] [2023-11-29 03:24:45,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497253210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:24:45,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:24:45,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2023-11-29 03:24:45,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108129316] [2023-11-29 03:24:45,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:24:45,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 03:24:45,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:24:45,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 03:24:45,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2023-11-29 03:24:45,949 INFO L87 Difference]: Start difference. First operand 37420 states and 61882 transitions. Second operand has 28 states, 28 states have (on average 14.892857142857142) internal successors, (417), 27 states have internal predecessors, (417), 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 03:24:54,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:24:59,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:25:03,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:25:08,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:25:11,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.77s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:25:16,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.91s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:25:19,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:25:23,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:25:27,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:25:29,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:25:33,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.36s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:25:36,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:25:38,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:25:41,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:25:44,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:25:47,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:25:50,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:25:52,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:25:56,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.48s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:25:58,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:26:03,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:26:06,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.44s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:26:10,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 03:26:12,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0]