./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example_v.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_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/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_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example_v.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/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_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/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 fb8ca5e5ce2ed40fdd0ad3d69b0bd96c83a6daf11d842e9766da8dc50e36012a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:21:38,996 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:21:39,061 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 01:21:39,065 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:21:39,066 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:21:39,089 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:21:39,089 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:21:39,090 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:21:39,091 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:21:39,091 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:21:39,092 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:21:39,092 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:21:39,093 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:21:39,093 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:21:39,094 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:21:39,094 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:21:39,095 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:21:39,095 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:21:39,096 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:21:39,096 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:21:39,097 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:21:39,099 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:21:39,099 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:21:39,100 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:21:39,100 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:21:39,101 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:21:39,101 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:21:39,102 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:21:39,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:21:39,103 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:21:39,103 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:21:39,103 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:21:39,104 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:21:39,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:21:39,104 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:21:39,104 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:21:39,104 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:21:39,105 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:21:39,105 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:21:39,105 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_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb8ca5e5ce2ed40fdd0ad3d69b0bd96c83a6daf11d842e9766da8dc50e36012a [2023-11-29 01:21:39,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:21:39,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:21:39,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:21:39,349 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:21:39,350 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:21:39,351 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example_v.c [2023-11-29 01:21:42,094 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:21:42,260 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:21:42,260 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example_v.c [2023-11-29 01:21:42,268 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/data/986813c02/c9216cac35c5474e9344e37254063557/FLAG4ff75ee37 [2023-11-29 01:21:42,280 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/data/986813c02/c9216cac35c5474e9344e37254063557 [2023-11-29 01:21:42,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:21:42,283 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:21:42,285 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:21:42,285 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:21:42,289 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:21:42,290 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:21:42" (1/1) ... [2023-11-29 01:21:42,291 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2facc77a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:42, skipping insertion in model container [2023-11-29 01:21:42,291 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:21:42" (1/1) ... [2023-11-29 01:21:42,313 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:21:42,432 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_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example_v.c[1255,1268] [2023-11-29 01:21:42,480 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:21:42,489 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:21:42,499 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_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example_v.c[1255,1268] [2023-11-29 01:21:42,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:21:42,543 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:21:42,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:42 WrapperNode [2023-11-29 01:21:42,543 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:21:42,544 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:21:42,544 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:21:42,545 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:21:42,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:42" (1/1) ... [2023-11-29 01:21:42,561 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:42" (1/1) ... [2023-11-29 01:21:42,608 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 210 [2023-11-29 01:21:42,608 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:21:42,609 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:21:42,609 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:21:42,610 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:21:42,618 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:42" (1/1) ... [2023-11-29 01:21:42,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:42" (1/1) ... [2023-11-29 01:21:42,624 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:42" (1/1) ... [2023-11-29 01:21:42,645 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 01:21:42,645 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:42" (1/1) ... [2023-11-29 01:21:42,646 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:42" (1/1) ... [2023-11-29 01:21:42,661 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:42" (1/1) ... [2023-11-29 01:21:42,666 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:42" (1/1) ... [2023-11-29 01:21:42,671 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:42" (1/1) ... [2023-11-29 01:21:42,674 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:42" (1/1) ... [2023-11-29 01:21:42,681 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:21:42,681 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:21:42,682 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:21:42,682 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:21:42,682 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:42" (1/1) ... [2023-11-29 01:21:42,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:21:42,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:21:42,707 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:21:42,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:21:42,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:21:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:21:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:21:42,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:21:42,830 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:21:42,833 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:21:43,192 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:21:43,229 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:21:43,229 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:21:43,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:21:43 BoogieIcfgContainer [2023-11-29 01:21:43,229 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:21:43,233 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:21:43,233 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:21:43,236 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:21:43,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:21:42" (1/3) ... [2023-11-29 01:21:43,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12089b71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:21:43, skipping insertion in model container [2023-11-29 01:21:43,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:21:42" (2/3) ... [2023-11-29 01:21:43,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12089b71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:21:43, skipping insertion in model container [2023-11-29 01:21:43,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:21:43" (3/3) ... [2023-11-29 01:21:43,240 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cav14_example_v.c [2023-11-29 01:21:43,258 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:21:43,258 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:21:43,310 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:21:43,317 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;@da6afd2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:21:43,317 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:21:43,322 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:43,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-29 01:21:43,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:43,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:21:43,330 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:21:43,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:43,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1787280142, now seen corresponding path program 1 times [2023-11-29 01:21:43,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:43,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122608078] [2023-11-29 01:21:43,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:43,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:43,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:21:43,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:21:43,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122608078] [2023-11-29 01:21:43,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122608078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:21:43,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:21:43,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:21:43,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897349268] [2023-11-29 01:21:43,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:21:43,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:21:43,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:43,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:21:43,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:21:43,764 INFO L87 Difference]: Start difference. First operand has 38 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 37 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:43,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:21:43,808 INFO L93 Difference]: Finished difference Result 69 states and 111 transitions. [2023-11-29 01:21:43,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:21:43,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2023-11-29 01:21:43,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:21:43,818 INFO L225 Difference]: With dead ends: 69 [2023-11-29 01:21:43,818 INFO L226 Difference]: Without dead ends: 38 [2023-11-29 01:21:43,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:21:43,825 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 1 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:21:43,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 154 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:21:43,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-29 01:21:43,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-11-29 01:21:43,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 37 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:43,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 58 transitions. [2023-11-29 01:21:43,860 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 58 transitions. Word has length 12 [2023-11-29 01:21:43,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:21:43,860 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 58 transitions. [2023-11-29 01:21:43,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:43,861 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 58 transitions. [2023-11-29 01:21:43,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 01:21:43,861 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:43,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:21:43,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:21:43,862 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:21:43,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:43,863 INFO L85 PathProgramCache]: Analyzing trace with hash -427165450, now seen corresponding path program 1 times [2023-11-29 01:21:43,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:43,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307404328] [2023-11-29 01:21:43,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:43,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:43,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:21:43,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:21:43,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307404328] [2023-11-29 01:21:43,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307404328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:21:43,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:21:43,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:21:43,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294967808] [2023-11-29 01:21:43,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:21:43,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:21:43,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:43,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:21:43,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:21:43,967 INFO L87 Difference]: Start difference. First operand 38 states and 58 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:43,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:21:43,995 INFO L93 Difference]: Finished difference Result 72 states and 109 transitions. [2023-11-29 01:21:43,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:21:43,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-29 01:21:43,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:21:43,997 INFO L225 Difference]: With dead ends: 72 [2023-11-29 01:21:43,997 INFO L226 Difference]: Without dead ends: 41 [2023-11-29 01:21:43,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:21:43,999 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 1 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:21:43,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 152 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:21:44,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-29 01:21:44,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2023-11-29 01:21:44,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 39 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:44,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 60 transitions. [2023-11-29 01:21:44,006 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 60 transitions. Word has length 13 [2023-11-29 01:21:44,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:21:44,006 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 60 transitions. [2023-11-29 01:21:44,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:44,006 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 60 transitions. [2023-11-29 01:21:44,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 01:21:44,007 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:44,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:21:44,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:21:44,008 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:21:44,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:44,008 INFO L85 PathProgramCache]: Analyzing trace with hash -567659480, now seen corresponding path program 1 times [2023-11-29 01:21:44,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:44,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942147847] [2023-11-29 01:21:44,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:44,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:21:44,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:21:44,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942147847] [2023-11-29 01:21:44,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942147847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:21:44,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:21:44,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:21:44,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985222991] [2023-11-29 01:21:44,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:21:44,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:21:44,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:44,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:21:44,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:21:44,276 INFO L87 Difference]: Start difference. First operand 40 states and 60 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:44,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:21:44,376 INFO L93 Difference]: Finished difference Result 99 states and 148 transitions. [2023-11-29 01:21:44,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:21:44,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2023-11-29 01:21:44,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:21:44,378 INFO L225 Difference]: With dead ends: 99 [2023-11-29 01:21:44,378 INFO L226 Difference]: Without dead ends: 66 [2023-11-29 01:21:44,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:21:44,380 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 162 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:21:44,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 143 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:21:44,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-29 01:21:44,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 42. [2023-11-29 01:21:44,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.5121951219512195) internal successors, (62), 41 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:44,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 62 transitions. [2023-11-29 01:21:44,387 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 62 transitions. Word has length 14 [2023-11-29 01:21:44,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:21:44,387 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 62 transitions. [2023-11-29 01:21:44,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:44,388 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 62 transitions. [2023-11-29 01:21:44,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 01:21:44,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:44,389 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 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 01:21:44,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:21:44,389 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:21:44,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:44,390 INFO L85 PathProgramCache]: Analyzing trace with hash 263696652, now seen corresponding path program 1 times [2023-11-29 01:21:44,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:44,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546085480] [2023-11-29 01:21:44,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:44,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:44,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:21:44,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:21:44,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546085480] [2023-11-29 01:21:44,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546085480] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:21:44,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546767846] [2023-11-29 01:21:44,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:44,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:21:44,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:21:44,806 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:21:44,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:21:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:44,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 79 conjunts are in the unsatisfiable core [2023-11-29 01:21:44,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:21:45,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:21:45,439 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:21:45,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546767846] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:21:45,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:21:45,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 14 [2023-11-29 01:21:45,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595344454] [2023-11-29 01:21:45,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:21:45,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:21:45,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:45,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:21:45,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:21:45,442 INFO L87 Difference]: Start difference. First operand 42 states and 62 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:45,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:21:45,834 INFO L93 Difference]: Finished difference Result 102 states and 152 transitions. [2023-11-29 01:21:45,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:21:45,835 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2023-11-29 01:21:45,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:21:45,836 INFO L225 Difference]: With dead ends: 102 [2023-11-29 01:21:45,836 INFO L226 Difference]: Without dead ends: 69 [2023-11-29 01:21:45,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2023-11-29 01:21:45,838 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 160 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:21:45,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 111 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:21:45,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-29 01:21:45,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 54. [2023-11-29 01:21:45,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.4528301886792452) internal successors, (77), 53 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:45,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 77 transitions. [2023-11-29 01:21:45,847 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 77 transitions. Word has length 33 [2023-11-29 01:21:45,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:21:45,847 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 77 transitions. [2023-11-29 01:21:45,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:45,848 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 77 transitions. [2023-11-29 01:21:45,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-29 01:21:45,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:45,849 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 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 01:21:45,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:21:46,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:21:46,050 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:21:46,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:46,050 INFO L85 PathProgramCache]: Analyzing trace with hash -747623342, now seen corresponding path program 1 times [2023-11-29 01:21:46,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:46,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746202447] [2023-11-29 01:21:46,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:46,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:46,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:21:46,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:21:46,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746202447] [2023-11-29 01:21:46,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746202447] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:21:46,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460223190] [2023-11-29 01:21:46,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:46,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:21:46,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:21:46,515 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:21:46,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:21:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:46,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-29 01:21:46,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:21:46,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:21:46,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:21:46,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460223190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:21:46,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:21:46,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2023-11-29 01:21:46,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841317243] [2023-11-29 01:21:46,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:21:46,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:21:46,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:46,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:21:46,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:21:46,854 INFO L87 Difference]: Start difference. First operand 54 states and 77 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:47,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:21:47,061 INFO L93 Difference]: Finished difference Result 110 states and 161 transitions. [2023-11-29 01:21:47,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:21:47,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-11-29 01:21:47,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:21:47,063 INFO L225 Difference]: With dead ends: 110 [2023-11-29 01:21:47,063 INFO L226 Difference]: Without dead ends: 72 [2023-11-29 01:21:47,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:21:47,065 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 159 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:21:47,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 164 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:21:47,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-29 01:21:47,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 57. [2023-11-29 01:21:47,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 56 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:47,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 79 transitions. [2023-11-29 01:21:47,073 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 79 transitions. Word has length 34 [2023-11-29 01:21:47,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:21:47,074 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 79 transitions. [2023-11-29 01:21:47,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:47,074 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 79 transitions. [2023-11-29 01:21:47,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-29 01:21:47,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:47,075 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 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 01:21:47,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:21:47,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:21:47,281 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:21:47,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:47,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1619776874, now seen corresponding path program 1 times [2023-11-29 01:21:47,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:47,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543993253] [2023-11-29 01:21:47,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:47,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:47,808 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:21:47,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:21:47,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543993253] [2023-11-29 01:21:47,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543993253] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:21:47,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:21:47,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:21:47,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158978429] [2023-11-29 01:21:47,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:21:47,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:21:47,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:47,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:21:47,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:21:47,811 INFO L87 Difference]: Start difference. First operand 57 states and 79 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:47,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:21:47,992 INFO L93 Difference]: Finished difference Result 165 states and 238 transitions. [2023-11-29 01:21:47,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:21:47,993 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-11-29 01:21:47,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:21:47,994 INFO L225 Difference]: With dead ends: 165 [2023-11-29 01:21:47,994 INFO L226 Difference]: Without dead ends: 132 [2023-11-29 01:21:47,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:21:47,996 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 164 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:21:47,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 432 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:21:47,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-29 01:21:48,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 68. [2023-11-29 01:21:48,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.4179104477611941) internal successors, (95), 67 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:48,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 95 transitions. [2023-11-29 01:21:48,006 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 95 transitions. Word has length 34 [2023-11-29 01:21:48,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:21:48,007 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 95 transitions. [2023-11-29 01:21:48,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:48,007 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 95 transitions. [2023-11-29 01:21:48,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-29 01:21:48,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:48,009 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 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 01:21:48,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:21:48,009 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:21:48,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:48,010 INFO L85 PathProgramCache]: Analyzing trace with hash -70461518, now seen corresponding path program 1 times [2023-11-29 01:21:48,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:48,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018178915] [2023-11-29 01:21:48,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:48,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:48,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:21:48,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:21:48,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018178915] [2023-11-29 01:21:48,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018178915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:21:48,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:21:48,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:21:48,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282784401] [2023-11-29 01:21:48,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:21:48,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:21:48,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:48,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:21:48,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:21:48,535 INFO L87 Difference]: Start difference. First operand 68 states and 95 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:48,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:21:48,826 INFO L93 Difference]: Finished difference Result 146 states and 214 transitions. [2023-11-29 01:21:48,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:21:48,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-11-29 01:21:48,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:21:48,827 INFO L225 Difference]: With dead ends: 146 [2023-11-29 01:21:48,827 INFO L226 Difference]: Without dead ends: 102 [2023-11-29 01:21:48,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:21:48,829 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 192 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:21:48,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 140 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:21:48,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-29 01:21:48,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 71. [2023-11-29 01:21:48,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.4142857142857144) internal successors, (99), 70 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:48,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 99 transitions. [2023-11-29 01:21:48,836 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 99 transitions. Word has length 35 [2023-11-29 01:21:48,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:21:48,837 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 99 transitions. [2023-11-29 01:21:48,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:48,837 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 99 transitions. [2023-11-29 01:21:48,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-29 01:21:48,838 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:48,838 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 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 01:21:48,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:21:48,839 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:21:48,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:48,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1713295004, now seen corresponding path program 1 times [2023-11-29 01:21:48,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:48,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323968717] [2023-11-29 01:21:48,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:48,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:49,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:21:49,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:21:49,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323968717] [2023-11-29 01:21:49,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323968717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:21:49,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:21:49,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:21:49,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706294567] [2023-11-29 01:21:49,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:21:49,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:21:49,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:49,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:21:49,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:21:49,120 INFO L87 Difference]: Start difference. First operand 71 states and 99 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:49,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:21:49,379 INFO L93 Difference]: Finished difference Result 186 states and 268 transitions. [2023-11-29 01:21:49,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:21:49,379 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-11-29 01:21:49,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:21:49,380 INFO L225 Difference]: With dead ends: 186 [2023-11-29 01:21:49,380 INFO L226 Difference]: Without dead ends: 142 [2023-11-29 01:21:49,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:21:49,382 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 250 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:21:49,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 272 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:21:49,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-29 01:21:49,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 84. [2023-11-29 01:21:49,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.3975903614457832) internal successors, (116), 83 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:49,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 116 transitions. [2023-11-29 01:21:49,390 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 116 transitions. Word has length 35 [2023-11-29 01:21:49,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:21:49,390 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 116 transitions. [2023-11-29 01:21:49,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:49,391 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 116 transitions. [2023-11-29 01:21:49,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-29 01:21:49,392 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:49,392 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 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 01:21:49,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:21:49,392 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:21:49,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:49,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1599231384, now seen corresponding path program 1 times [2023-11-29 01:21:49,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:49,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117479478] [2023-11-29 01:21:49,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:49,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:49,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:49,626 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:21:49,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:21:49,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117479478] [2023-11-29 01:21:49,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117479478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:21:49,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:21:49,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:21:49,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939922448] [2023-11-29 01:21:49,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:21:49,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:21:49,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:49,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:21:49,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:21:49,629 INFO L87 Difference]: Start difference. First operand 84 states and 116 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:49,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:21:49,701 INFO L93 Difference]: Finished difference Result 160 states and 222 transitions. [2023-11-29 01:21:49,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:21:49,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-11-29 01:21:49,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:21:49,702 INFO L225 Difference]: With dead ends: 160 [2023-11-29 01:21:49,702 INFO L226 Difference]: Without dead ends: 94 [2023-11-29 01:21:49,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:21:49,704 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 151 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:21:49,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 148 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:21:49,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-11-29 01:21:49,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 69. [2023-11-29 01:21:49,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.3970588235294117) internal successors, (95), 68 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:49,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 95 transitions. [2023-11-29 01:21:49,710 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 95 transitions. Word has length 35 [2023-11-29 01:21:49,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:21:49,711 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 95 transitions. [2023-11-29 01:21:49,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:49,711 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 95 transitions. [2023-11-29 01:21:49,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-29 01:21:49,712 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:49,712 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 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 01:21:49,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:21:49,713 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:21:49,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:49,713 INFO L85 PathProgramCache]: Analyzing trace with hash -395335856, now seen corresponding path program 1 times [2023-11-29 01:21:49,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:49,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149888150] [2023-11-29 01:21:49,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:49,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:50,256 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:21:50,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:21:50,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149888150] [2023-11-29 01:21:50,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149888150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:21:50,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:21:50,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:21:50,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300577452] [2023-11-29 01:21:50,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:21:50,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:21:50,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:50,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:21:50,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:21:50,258 INFO L87 Difference]: Start difference. First operand 69 states and 95 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:50,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:21:50,498 INFO L93 Difference]: Finished difference Result 123 states and 174 transitions. [2023-11-29 01:21:50,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:21:50,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-11-29 01:21:50,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:21:50,500 INFO L225 Difference]: With dead ends: 123 [2023-11-29 01:21:50,500 INFO L226 Difference]: Without dead ends: 79 [2023-11-29 01:21:50,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:21:50,501 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 120 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:21:50,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 116 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:21:50,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-29 01:21:50,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2023-11-29 01:21:50,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 74 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:50,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 104 transitions. [2023-11-29 01:21:50,507 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 104 transitions. Word has length 36 [2023-11-29 01:21:50,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:21:50,507 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 104 transitions. [2023-11-29 01:21:50,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:50,507 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 104 transitions. [2023-11-29 01:21:50,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-29 01:21:50,508 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:50,508 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 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 01:21:50,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 01:21:50,509 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:21:50,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:50,509 INFO L85 PathProgramCache]: Analyzing trace with hash 305728722, now seen corresponding path program 1 times [2023-11-29 01:21:50,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:50,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533029458] [2023-11-29 01:21:50,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:50,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:50,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:21:50,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:21:50,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533029458] [2023-11-29 01:21:50,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533029458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:21:50,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:21:50,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:21:50,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190595678] [2023-11-29 01:21:50,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:21:50,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:21:50,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:50,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:21:50,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:21:50,919 INFO L87 Difference]: Start difference. First operand 75 states and 104 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:51,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:21:51,070 INFO L93 Difference]: Finished difference Result 160 states and 230 transitions. [2023-11-29 01:21:51,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:21:51,071 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-11-29 01:21:51,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:21:51,072 INFO L225 Difference]: With dead ends: 160 [2023-11-29 01:21:51,072 INFO L226 Difference]: Without dead ends: 116 [2023-11-29 01:21:51,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:21:51,073 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 131 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:21:51,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 358 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:21:51,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-29 01:21:51,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 76. [2023-11-29 01:21:51,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.4133333333333333) internal successors, (106), 75 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:51,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 106 transitions. [2023-11-29 01:21:51,079 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 106 transitions. Word has length 36 [2023-11-29 01:21:51,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:21:51,080 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 106 transitions. [2023-11-29 01:21:51,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:51,080 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 106 transitions. [2023-11-29 01:21:51,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 01:21:51,081 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:51,081 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:21:51,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:21:51,081 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:21:51,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:51,082 INFO L85 PathProgramCache]: Analyzing trace with hash -2035292378, now seen corresponding path program 1 times [2023-11-29 01:21:51,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:51,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526521574] [2023-11-29 01:21:51,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:51,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:51,865 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:21:51,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:21:51,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526521574] [2023-11-29 01:21:51,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526521574] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:21:51,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242534073] [2023-11-29 01:21:51,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:51,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:21:51,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:21:51,867 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:21:51,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:21:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:21:52,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 57 conjunts are in the unsatisfiable core [2023-11-29 01:21:52,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:21:52,649 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:21:52,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:21:53,812 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:21:53,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242534073] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:21:53,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:21:53,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 17] total 36 [2023-11-29 01:21:53,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915664051] [2023-11-29 01:21:53,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:21:53,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 01:21:53,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:21:53,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 01:21:53,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1121, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 01:21:53,825 INFO L87 Difference]: Start difference. First operand 76 states and 106 transitions. Second operand has 37 states, 37 states have (on average 4.054054054054054) internal successors, (150), 36 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:58,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:21:58,306 INFO L93 Difference]: Finished difference Result 581 states and 803 transitions. [2023-11-29 01:21:58,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-11-29 01:21:58,307 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.054054054054054) internal successors, (150), 36 states have internal predecessors, (150), 0 states have call successors, (0), 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 55 [2023-11-29 01:21:58,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:21:58,310 INFO L225 Difference]: With dead ends: 581 [2023-11-29 01:21:58,310 INFO L226 Difference]: Without dead ends: 536 [2023-11-29 01:21:58,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3965 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2632, Invalid=12620, Unknown=0, NotChecked=0, Total=15252 [2023-11-29 01:21:58,316 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 988 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 2485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:21:58,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 764 Invalid, 2485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 01:21:58,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2023-11-29 01:21:58,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 115. [2023-11-29 01:21:58,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.3771929824561404) internal successors, (157), 114 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:58,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 157 transitions. [2023-11-29 01:21:58,326 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 157 transitions. Word has length 55 [2023-11-29 01:21:58,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:21:58,326 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 157 transitions. [2023-11-29 01:21:58,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.054054054054054) internal successors, (150), 36 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:21:58,326 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 157 transitions. [2023-11-29 01:21:58,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-29 01:21:58,327 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:21:58,327 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 01:21:58,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:21:58,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:21:58,533 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:21:58,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:21:58,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1071796218, now seen corresponding path program 1 times [2023-11-29 01:21:58,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:21:58,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359221824] [2023-11-29 01:21:58,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:21:58,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:21:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:00,237 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:00,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:00,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359221824] [2023-11-29 01:22:00,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359221824] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:22:00,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219485455] [2023-11-29 01:22:00,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:00,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:22:00,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:22:00,238 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:22:00,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:22:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:00,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 110 conjunts are in the unsatisfiable core [2023-11-29 01:22:00,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:22:01,243 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:01,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:22:04,859 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:04,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219485455] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:22:04,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:22:04,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 21] total 46 [2023-11-29 01:22:04,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144502064] [2023-11-29 01:22:04,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:22:04,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-29 01:22:04,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:04,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-29 01:22:04,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=1894, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 01:22:04,862 INFO L87 Difference]: Start difference. First operand 115 states and 157 transitions. Second operand has 47 states, 47 states have (on average 3.25531914893617) internal successors, (153), 46 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:16,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:22:16,036 INFO L93 Difference]: Finished difference Result 520 states and 710 transitions. [2023-11-29 01:22:16,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-11-29 01:22:16,037 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.25531914893617) internal successors, (153), 46 states have internal predecessors, (153), 0 states have call successors, (0), 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 56 [2023-11-29 01:22:16,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:22:16,039 INFO L225 Difference]: With dead ends: 520 [2023-11-29 01:22:16,039 INFO L226 Difference]: Without dead ends: 433 [2023-11-29 01:22:16,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6588 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=3290, Invalid=17016, Unknown=0, NotChecked=0, Total=20306 [2023-11-29 01:22:16,045 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 2404 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 2333 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2404 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 2333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:22:16,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2404 Valid, 528 Invalid, 2495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 2333 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-29 01:22:16,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-11-29 01:22:16,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 179. [2023-11-29 01:22:16,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.3820224719101124) internal successors, (246), 178 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:16,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 246 transitions. [2023-11-29 01:22:16,059 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 246 transitions. Word has length 56 [2023-11-29 01:22:16,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:22:16,059 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 246 transitions. [2023-11-29 01:22:16,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.25531914893617) internal successors, (153), 46 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:16,060 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 246 transitions. [2023-11-29 01:22:16,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 01:22:16,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:22:16,061 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:22:16,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:22:16,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 01:22:16,261 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:22:16,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:16,262 INFO L85 PathProgramCache]: Analyzing trace with hash 854526888, now seen corresponding path program 1 times [2023-11-29 01:22:16,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:16,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630754103] [2023-11-29 01:22:16,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:16,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:16,722 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 01:22:16,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:16,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630754103] [2023-11-29 01:22:16,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630754103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:22:16,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:22:16,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:22:16,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378439615] [2023-11-29 01:22:16,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:22:16,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:22:16,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:16,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:22:16,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:22:16,725 INFO L87 Difference]: Start difference. First operand 179 states and 246 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:16,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:22:16,795 INFO L93 Difference]: Finished difference Result 349 states and 481 transitions. [2023-11-29 01:22:16,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:22:16,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 57 [2023-11-29 01:22:16,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:22:16,796 INFO L225 Difference]: With dead ends: 349 [2023-11-29 01:22:16,796 INFO L226 Difference]: Without dead ends: 195 [2023-11-29 01:22:16,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:22:16,797 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 131 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:22:16,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 153 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:22:16,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-11-29 01:22:16,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 175. [2023-11-29 01:22:16,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.3735632183908046) internal successors, (239), 174 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:16,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 239 transitions. [2023-11-29 01:22:16,809 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 239 transitions. Word has length 57 [2023-11-29 01:22:16,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:22:16,810 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 239 transitions. [2023-11-29 01:22:16,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:16,810 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 239 transitions. [2023-11-29 01:22:16,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 01:22:16,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:22:16,811 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:22:16,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 01:22:16,811 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:22:16,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:16,812 INFO L85 PathProgramCache]: Analyzing trace with hash 357357024, now seen corresponding path program 1 times [2023-11-29 01:22:16,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:16,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096122218] [2023-11-29 01:22:16,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:16,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:18,193 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:18,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:18,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096122218] [2023-11-29 01:22:18,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096122218] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:22:18,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920273588] [2023-11-29 01:22:18,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:18,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:22:18,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:22:18,195 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:22:18,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:22:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:18,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 144 conjunts are in the unsatisfiable core [2023-11-29 01:22:18,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:22:19,469 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:19,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:22:21,462 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:21,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920273588] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:22:21,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:22:21,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 21, 21] total 51 [2023-11-29 01:22:21,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845908770] [2023-11-29 01:22:21,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:22:21,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-29 01:22:21,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:21,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-29 01:22:21,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=2317, Unknown=0, NotChecked=0, Total=2652 [2023-11-29 01:22:21,466 INFO L87 Difference]: Start difference. First operand 175 states and 239 transitions. Second operand has 52 states, 52 states have (on average 3.0961538461538463) internal successors, (161), 51 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:28,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:22:28,501 INFO L93 Difference]: Finished difference Result 670 states and 920 transitions. [2023-11-29 01:22:28,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-11-29 01:22:28,501 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.0961538461538463) internal successors, (161), 51 states have internal predecessors, (161), 0 states have call successors, (0), 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 58 [2023-11-29 01:22:28,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:22:28,504 INFO L225 Difference]: With dead ends: 670 [2023-11-29 01:22:28,505 INFO L226 Difference]: Without dead ends: 523 [2023-11-29 01:22:28,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5460 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=3249, Invalid=16491, Unknown=0, NotChecked=0, Total=19740 [2023-11-29 01:22:28,510 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 1284 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 2225 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 2277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:22:28,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1284 Valid, 1111 Invalid, 2277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 2225 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 01:22:28,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2023-11-29 01:22:28,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 283. [2023-11-29 01:22:28,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 1.3617021276595744) internal successors, (384), 282 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:28,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 384 transitions. [2023-11-29 01:22:28,523 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 384 transitions. Word has length 58 [2023-11-29 01:22:28,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:22:28,523 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 384 transitions. [2023-11-29 01:22:28,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.0961538461538463) internal successors, (161), 51 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:28,524 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 384 transitions. [2023-11-29 01:22:28,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 01:22:28,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:22:28,524 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 01:22:28,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:22:28,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 01:22:28,725 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:22:28,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:28,726 INFO L85 PathProgramCache]: Analyzing trace with hash 315993212, now seen corresponding path program 1 times [2023-11-29 01:22:28,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:28,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462426692] [2023-11-29 01:22:28,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:28,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:29,155 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:22:29,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:29,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462426692] [2023-11-29 01:22:29,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462426692] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:22:29,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52385787] [2023-11-29 01:22:29,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:29,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:22:29,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:22:29,157 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:22:29,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:22:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:29,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-29 01:22:29,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:22:29,652 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:29,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:22:30,085 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 17 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:30,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52385787] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:22:30,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:22:30,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 11] total 26 [2023-11-29 01:22:30,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80404661] [2023-11-29 01:22:30,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:22:30,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 01:22:30,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:30,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 01:22:30,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2023-11-29 01:22:30,087 INFO L87 Difference]: Start difference. First operand 283 states and 384 transitions. Second operand has 26 states, 26 states have (on average 5.576923076923077) internal successors, (145), 26 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:32,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:22:32,248 INFO L93 Difference]: Finished difference Result 841 states and 1135 transitions. [2023-11-29 01:22:32,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-29 01:22:32,248 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.576923076923077) internal successors, (145), 26 states have internal predecessors, (145), 0 states have call successors, (0), 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 58 [2023-11-29 01:22:32,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:22:32,251 INFO L225 Difference]: With dead ends: 841 [2023-11-29 01:22:32,251 INFO L226 Difference]: Without dead ends: 586 [2023-11-29 01:22:32,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1103 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1025, Invalid=3531, Unknown=0, NotChecked=0, Total=4556 [2023-11-29 01:22:32,252 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 894 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:22:32,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 335 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:22:32,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2023-11-29 01:22:32,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 288. [2023-11-29 01:22:32,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.3031358885017421) internal successors, (374), 287 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:32,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 374 transitions. [2023-11-29 01:22:32,275 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 374 transitions. Word has length 58 [2023-11-29 01:22:32,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:22:32,275 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 374 transitions. [2023-11-29 01:22:32,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.576923076923077) internal successors, (145), 26 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:32,276 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 374 transitions. [2023-11-29 01:22:32,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 01:22:32,276 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:22:32,276 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:22:32,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:22:32,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 01:22:32,477 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:22:32,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:32,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1492540112, now seen corresponding path program 1 times [2023-11-29 01:22:32,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:32,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884199747] [2023-11-29 01:22:32,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:32,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:33,196 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:33,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:22:33,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884199747] [2023-11-29 01:22:33,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884199747] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:22:33,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874979049] [2023-11-29 01:22:33,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:33,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:22:33,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:22:33,198 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:22:33,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:22:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:33,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-29 01:22:33,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:22:33,906 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 21 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:33,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:22:34,986 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:34,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874979049] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:22:34,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:22:34,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 17] total 38 [2023-11-29 01:22:34,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166205264] [2023-11-29 01:22:34,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:22:34,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 01:22:34,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:22:34,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 01:22:34,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1268, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 01:22:34,989 INFO L87 Difference]: Start difference. First operand 288 states and 374 transitions. Second operand has 39 states, 39 states have (on average 4.0) internal successors, (156), 38 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:37,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:22:37,742 INFO L93 Difference]: Finished difference Result 960 states and 1238 transitions. [2023-11-29 01:22:37,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-29 01:22:37,743 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.0) internal successors, (156), 38 states have internal predecessors, (156), 0 states have call successors, (0), 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 59 [2023-11-29 01:22:37,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:22:37,747 INFO L225 Difference]: With dead ends: 960 [2023-11-29 01:22:37,747 INFO L226 Difference]: Without dead ends: 700 [2023-11-29 01:22:37,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2346 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1999, Invalid=6743, Unknown=0, NotChecked=0, Total=8742 [2023-11-29 01:22:37,748 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1213 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:22:37,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1213 Valid, 512 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:22:37,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2023-11-29 01:22:37,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 403. [2023-11-29 01:22:37,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 1.3109452736318408) internal successors, (527), 402 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:37,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 527 transitions. [2023-11-29 01:22:37,779 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 527 transitions. Word has length 59 [2023-11-29 01:22:37,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:22:37,779 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 527 transitions. [2023-11-29 01:22:37,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.0) internal successors, (156), 38 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:37,780 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 527 transitions. [2023-11-29 01:22:37,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 01:22:37,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:22:37,781 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:22:37,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:22:37,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:22:37,983 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:22:37,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:37,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1113483442, now seen corresponding path program 1 times [2023-11-29 01:22:37,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:22:37,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331410578] [2023-11-29 01:22:37,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:37,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:22:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:22:38,105 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 01:22:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:22:38,300 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 01:22:38,300 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 01:22:38,301 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 01:22:38,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 01:22:38,306 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:22:38,309 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 01:22:38,354 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated [2023-11-29 01:22:38,354 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-29 01:22:38,355 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet6 could not be translated [2023-11-29 01:22:38,355 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-29 01:22:38,357 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet9 could not be translated [2023-11-29 01:22:38,357 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-29 01:22:38,359 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated [2023-11-29 01:22:38,360 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet12 could not be translated [2023-11-29 01:22:38,362 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet13 could not be translated [2023-11-29 01:22:38,365 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet14 could not be translated [2023-11-29 01:22:38,366 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet15 could not be translated [2023-11-29 01:22:38,369 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet16 could not be translated [2023-11-29 01:22:38,373 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet9 could not be translated [2023-11-29 01:22:38,374 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-29 01:22:38,377 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated [2023-11-29 01:22:38,378 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet12 could not be translated [2023-11-29 01:22:38,380 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet13 could not be translated [2023-11-29 01:22:38,381 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet14 could not be translated [2023-11-29 01:22:38,382 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet15 could not be translated [2023-11-29 01:22:38,384 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet16 could not be translated [2023-11-29 01:22:38,385 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet9 could not be translated [2023-11-29 01:22:38,386 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-29 01:22:38,387 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-29 01:22:38,387 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-29 01:22:38,387 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-29 01:22:38,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 01:22:38 BoogieIcfgContainer [2023-11-29 01:22:38,406 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 01:22:38,407 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 01:22:38,407 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 01:22:38,407 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 01:22:38,408 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:21:43" (3/4) ... [2023-11-29 01:22:38,410 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 01:22:38,411 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 01:22:38,411 INFO L158 Benchmark]: Toolchain (without parser) took 56127.76ms. Allocated memory was 140.5MB in the beginning and 377.5MB in the end (delta: 237.0MB). Free memory was 93.1MB in the beginning and 305.5MB in the end (delta: -212.4MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2023-11-29 01:22:38,412 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 140.5MB. Free memory is still 112.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:22:38,412 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.95ms. Allocated memory is still 140.5MB. Free memory was 92.8MB in the beginning and 80.1MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 01:22:38,412 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.45ms. Allocated memory is still 140.5MB. Free memory was 80.1MB in the beginning and 75.0MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 01:22:38,413 INFO L158 Benchmark]: Boogie Preprocessor took 71.59ms. Allocated memory is still 140.5MB. Free memory was 75.0MB in the beginning and 71.4MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 01:22:38,413 INFO L158 Benchmark]: RCFGBuilder took 548.10ms. Allocated memory was 140.5MB in the beginning and 180.4MB in the end (delta: 39.8MB). Free memory was 71.4MB in the beginning and 149.4MB in the end (delta: -78.0MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. [2023-11-29 01:22:38,413 INFO L158 Benchmark]: TraceAbstraction took 55173.78ms. Allocated memory was 180.4MB in the beginning and 377.5MB in the end (delta: 197.1MB). Free memory was 148.3MB in the beginning and 305.5MB in the end (delta: -157.1MB). Peak memory consumption was 232.8MB. Max. memory is 16.1GB. [2023-11-29 01:22:38,414 INFO L158 Benchmark]: Witness Printer took 3.75ms. Allocated memory is still 377.5MB. Free memory is still 305.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 01:22:38,416 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 140.5MB. Free memory is still 112.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 258.95ms. Allocated memory is still 140.5MB. Free memory was 92.8MB in the beginning and 80.1MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.45ms. Allocated memory is still 140.5MB. Free memory was 80.1MB in the beginning and 75.0MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.59ms. Allocated memory is still 140.5MB. Free memory was 75.0MB in the beginning and 71.4MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 548.10ms. Allocated memory was 140.5MB in the beginning and 180.4MB in the end (delta: 39.8MB). Free memory was 71.4MB in the beginning and 149.4MB in the end (delta: -78.0MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. * TraceAbstraction took 55173.78ms. Allocated memory was 180.4MB in the beginning and 377.5MB in the end (delta: 197.1MB). Free memory was 148.3MB in the beginning and 305.5MB in the end (delta: -157.1MB). Peak memory consumption was 232.8MB. Max. memory is 16.1GB. * Witness Printer took 3.75ms. Allocated memory is still 377.5MB. Free memory is still 305.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet13 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet15 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet16 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet13 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet15 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet16 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 115. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 4); [L30] const SORT_3 msb_SORT_3 = (SORT_3)1 << (4 - 1); [L32] const SORT_3 var_4 = 0; [L33] const SORT_3 var_7 = 1; [L34] const SORT_1 var_14 = 1; [L35] const SORT_3 var_20 = 15; [L37] SORT_1 input_2; [L39] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3 VAL [mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, var_14=1, var_20=15, var_4=0, var_7=1] [L39] SORT_3 state_5 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L40] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3 VAL [mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, state_5=0, var_14=1, var_20=15, var_4=0, var_7=1] [L40] SORT_3 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L42] SORT_3 init_6_arg_1 = var_4; [L43] state_5 = init_6_arg_1 [L44] SORT_3 init_9_arg_1 = var_7; [L45] state_8 = init_9_arg_1 VAL [init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, state_5=0, state_8=1, var_14=1, var_20=15, var_4=0, var_7=1] [L48] input_2 = __VERIFIER_nondet_uchar() [L51] SORT_3 var_10_arg_0 = state_5; [L52] SORT_3 var_10_arg_1 = state_8; [L53] SORT_1 var_10 = var_10_arg_0 > var_10_arg_1; [L54] SORT_1 var_11_arg_0 = var_10; [L55] SORT_1 var_11 = ~var_11_arg_0; [L56] SORT_1 var_15_arg_0 = var_11; [L57] SORT_1 var_15 = ~var_15_arg_0; [L58] SORT_1 var_16_arg_0 = var_14; [L59] SORT_1 var_16_arg_1 = var_15; VAL [init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, state_5=0, state_8=1, var_10=0, var_10_arg_0=0, var_10_arg_1=1, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16_arg_0=1, var_16_arg_1=0, var_20=15, var_4=0, var_7=1] [L60] EXPR var_16_arg_0 & var_16_arg_1 VAL [init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, state_5=0, state_8=1, var_10=0, var_10_arg_0=0, var_10_arg_1=1, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16_arg_0=1, var_16_arg_1=0, var_20=15, var_4=0, var_7=1] [L60] SORT_1 var_16 = var_16_arg_0 & var_16_arg_1; [L61] EXPR var_16 & mask_SORT_1 VAL [init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, state_5=0, state_8=1, var_10=0, var_10_arg_0=0, var_10_arg_1=1, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_20=15, var_4=0, var_7=1] [L61] var_16 = var_16 & mask_SORT_1 [L62] SORT_1 bad_17_arg_0 = var_16; [L63] CALL __VERIFIER_assert(!(bad_17_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L63] RET __VERIFIER_assert(!(bad_17_arg_0)) [L65] SORT_3 var_25_arg_0 = state_5; [L66] SORT_3 var_25_arg_1 = state_8; [L67] SORT_1 var_25 = var_25_arg_0 == var_25_arg_1; [L68] SORT_3 var_24_arg_0 = state_5; [L69] SORT_3 var_24_arg_1 = var_7; [L70] SORT_3 var_24 = var_24_arg_0 + var_24_arg_1; [L71] SORT_3 var_19_arg_0 = state_5; [L72] SORT_3 var_19_arg_1 = state_8; [L73] SORT_1 var_19 = var_19_arg_0 > var_19_arg_1; [L74] SORT_3 var_21_arg_0 = state_8; [L75] SORT_3 var_21_arg_1 = var_20; [L76] SORT_1 var_21 = var_21_arg_0 != var_21_arg_1; [L77] SORT_1 var_22_arg_0 = var_19; [L78] SORT_1 var_22_arg_1 = var_21; VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, state_5=0, state_8=1, var_10=0, var_10_arg_0=0, var_10_arg_1=1, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_20=15, var_21=1, var_21_arg_0=1, var_21_arg_1=15, var_22_arg_0=0, var_22_arg_1=1, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_4=0, var_7=1] [L79] EXPR var_22_arg_0 | var_22_arg_1 VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, state_5=0, state_8=1, var_10=0, var_10_arg_0=0, var_10_arg_1=1, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_20=15, var_21=1, var_21_arg_0=1, var_21_arg_1=15, var_22_arg_0=0, var_22_arg_1=1, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_4=0, var_7=1] [L79] SORT_1 var_22 = var_22_arg_0 | var_22_arg_1; [L80] EXPR var_22 & mask_SORT_1 VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, state_5=0, state_8=1, var_10=0, var_10_arg_0=0, var_10_arg_1=1, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_20=15, var_21=1, var_21_arg_0=1, var_21_arg_1=15, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_4=0, var_7=1] [L80] var_22 = var_22 & mask_SORT_1 [L81] SORT_1 var_23_arg_0 = var_22; [L82] SORT_3 var_23_arg_1 = state_5; [L83] SORT_3 var_23_arg_2 = state_8; [L84] SORT_3 var_23 = var_23_arg_0 ? var_23_arg_1 : var_23_arg_2; [L85] SORT_1 var_26_arg_0 = var_25; [L86] SORT_3 var_26_arg_1 = var_24; [L87] SORT_3 var_26_arg_2 = var_23; [L88] SORT_3 var_26 = var_26_arg_0 ? var_26_arg_1 : var_26_arg_2; VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, state_5=0, state_8=1, var_10=0, var_10_arg_0=0, var_10_arg_1=1, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_20=15, var_21=1, var_21_arg_0=1, var_21_arg_1=15, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_23=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=1, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=0, var_26_arg_0=0, var_26_arg_1=1, var_26_arg_2=0, var_4=0, var_7=1] [L89] EXPR var_26 & mask_SORT_3 VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, state_5=0, state_8=1, var_10=0, var_10_arg_0=0, var_10_arg_1=1, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_20=15, var_21=1, var_21_arg_0=1, var_21_arg_1=15, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_23=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=1, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=0, var_26_arg_0=0, var_26_arg_1=1, var_26_arg_2=0, var_4=0, var_7=1] [L89] var_26 = var_26 & mask_SORT_3 [L90] SORT_3 next_27_arg_1 = var_26; [L91] SORT_3 var_33_arg_0 = state_5; [L92] SORT_3 var_33_arg_1 = state_8; [L93] SORT_1 var_33 = var_33_arg_0 > var_33_arg_1; [L94] SORT_3 var_29_arg_0 = state_5; [L95] SORT_3 var_29_arg_1 = state_8; [L96] SORT_1 var_29 = var_29_arg_0 == var_29_arg_1; [L97] SORT_3 var_30_arg_0 = state_8; [L98] SORT_3 var_30_arg_1 = var_20; [L99] SORT_1 var_30 = var_30_arg_0 != var_30_arg_1; [L100] SORT_1 var_31_arg_0 = var_29; [L101] SORT_1 var_31_arg_1 = var_30; VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, next_27_arg_1=0, state_5=0, state_8=1, var_10=0, var_10_arg_0=0, var_10_arg_1=1, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_20=15, var_21=1, var_21_arg_0=1, var_21_arg_1=15, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_23=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=1, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=0, var_26_arg_0=0, var_26_arg_1=1, var_26_arg_2=0, var_29=0, var_29_arg_0=0, var_29_arg_1=1, var_30=1, var_30_arg_0=1, var_30_arg_1=15, var_31_arg_0=0, var_31_arg_1=1, var_33=0, var_33_arg_0=0, var_33_arg_1=1, var_4=0, var_7=1] [L102] EXPR var_31_arg_0 | var_31_arg_1 VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, next_27_arg_1=0, state_5=0, state_8=1, var_10=0, var_10_arg_0=0, var_10_arg_1=1, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_20=15, var_21=1, var_21_arg_0=1, var_21_arg_1=15, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_23=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=1, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=0, var_26_arg_0=0, var_26_arg_1=1, var_26_arg_2=0, var_29=0, var_29_arg_0=0, var_29_arg_1=1, var_30=1, var_30_arg_0=1, var_30_arg_1=15, var_31_arg_0=0, var_31_arg_1=1, var_33=0, var_33_arg_0=0, var_33_arg_1=1, var_4=0, var_7=1] [L102] SORT_1 var_31 = var_31_arg_0 | var_31_arg_1; [L103] EXPR var_31 & mask_SORT_1 VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, next_27_arg_1=0, state_5=0, state_8=1, var_10=0, var_10_arg_0=0, var_10_arg_1=1, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_20=15, var_21=1, var_21_arg_0=1, var_21_arg_1=15, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_23=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=1, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=0, var_26_arg_0=0, var_26_arg_1=1, var_26_arg_2=0, var_29=0, var_29_arg_0=0, var_29_arg_1=1, var_30=1, var_30_arg_0=1, var_30_arg_1=15, var_31=1, var_31_arg_0=0, var_31_arg_1=1, var_33=0, var_33_arg_0=0, var_33_arg_1=1, var_4=0, var_7=1] [L103] var_31 = var_31 & mask_SORT_1 [L104] SORT_3 var_28_arg_0 = state_8; [L105] SORT_3 var_28_arg_1 = var_7; [L106] SORT_3 var_28 = var_28_arg_0 + var_28_arg_1; [L107] SORT_1 var_32_arg_0 = var_31; [L108] SORT_3 var_32_arg_1 = var_28; [L109] SORT_3 var_32_arg_2 = state_5; [L110] SORT_3 var_32 = var_32_arg_0 ? var_32_arg_1 : var_32_arg_2; [L111] SORT_1 var_34_arg_0 = var_33; [L112] SORT_3 var_34_arg_1 = state_8; [L113] SORT_3 var_34_arg_2 = var_32; [L114] SORT_3 var_34 = var_34_arg_0 ? var_34_arg_1 : var_34_arg_2; VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, next_27_arg_1=0, state_5=0, state_8=1, var_10=0, var_10_arg_0=0, var_10_arg_1=1, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_20=15, var_21=1, var_21_arg_0=1, var_21_arg_1=15, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_23=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=1, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=0, var_26_arg_0=0, var_26_arg_1=1, var_26_arg_2=0, var_28=2, var_28_arg_0=1, var_28_arg_1=1, var_29=0, var_29_arg_0=0, var_29_arg_1=1, var_30=1, var_30_arg_0=1, var_30_arg_1=15, var_31=1, var_31_arg_0=0, var_31_arg_1=1, var_32=2, var_32_arg_0=1, var_32_arg_1=2, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=1, var_34=2, var_34_arg_0=0, var_34_arg_1=1, var_34_arg_2=2, var_4=0, var_7=1] [L115] EXPR var_34 & mask_SORT_3 VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, next_27_arg_1=0, state_5=0, state_8=1, var_10=0, var_10_arg_0=0, var_10_arg_1=1, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_20=15, var_21=1, var_21_arg_0=1, var_21_arg_1=15, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_23=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=1, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=0, var_26_arg_0=0, var_26_arg_1=1, var_26_arg_2=0, var_28=2, var_28_arg_0=1, var_28_arg_1=1, var_29=0, var_29_arg_0=0, var_29_arg_1=1, var_30=1, var_30_arg_0=1, var_30_arg_1=15, var_31=1, var_31_arg_0=0, var_31_arg_1=1, var_32=2, var_32_arg_0=1, var_32_arg_1=2, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=1, var_34=2, var_34_arg_0=0, var_34_arg_1=1, var_34_arg_2=2, var_4=0, var_7=1] [L115] var_34 = var_34 & mask_SORT_3 [L116] SORT_3 next_35_arg_1 = var_34; [L118] state_5 = next_27_arg_1 [L119] state_8 = next_35_arg_1 VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, next_27_arg_1=0, next_35_arg_1=0, state_5=0, state_8=0, var_10=0, var_10_arg_0=0, var_10_arg_1=1, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_20=15, var_21=1, var_21_arg_0=1, var_21_arg_1=15, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_23=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=1, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=0, var_26_arg_0=0, var_26_arg_1=1, var_26_arg_2=0, var_28=2, var_28_arg_0=1, var_28_arg_1=1, var_29=0, var_29_arg_0=0, var_29_arg_1=1, var_30=1, var_30_arg_0=1, var_30_arg_1=15, var_31=1, var_31_arg_0=0, var_31_arg_1=1, var_32=2, var_32_arg_0=1, var_32_arg_1=2, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=1, var_34=0, var_34_arg_0=0, var_34_arg_1=1, var_34_arg_2=2, var_4=0, var_7=1] [L48] input_2 = __VERIFIER_nondet_uchar() [L51] SORT_3 var_10_arg_0 = state_5; [L52] SORT_3 var_10_arg_1 = state_8; [L53] SORT_1 var_10 = var_10_arg_0 > var_10_arg_1; [L54] SORT_1 var_11_arg_0 = var_10; [L55] SORT_1 var_11 = ~var_11_arg_0; [L56] SORT_1 var_15_arg_0 = var_11; [L57] SORT_1 var_15 = ~var_15_arg_0; [L58] SORT_1 var_16_arg_0 = var_14; [L59] SORT_1 var_16_arg_1 = var_15; VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, next_27_arg_1=0, next_35_arg_1=0, state_5=0, state_8=0, var_10=0, var_10_arg_0=0, var_10_arg_1=0, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_20=15, var_21=1, var_21_arg_0=1, var_21_arg_1=15, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_23=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=1, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=0, var_26_arg_0=0, var_26_arg_1=1, var_26_arg_2=0, var_28=2, var_28_arg_0=1, var_28_arg_1=1, var_29=0, var_29_arg_0=0, var_29_arg_1=1, var_30=1, var_30_arg_0=1, var_30_arg_1=15, var_31=1, var_31_arg_0=0, var_31_arg_1=1, var_32=2, var_32_arg_0=1, var_32_arg_1=2, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=1, var_34=0, var_34_arg_0=0, var_34_arg_1=1, var_34_arg_2=2, var_4=0, var_7=1] [L60] EXPR var_16_arg_0 & var_16_arg_1 VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, next_27_arg_1=0, next_35_arg_1=0, state_5=0, state_8=0, var_10=0, var_10_arg_0=0, var_10_arg_1=0, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_20=15, var_21=1, var_21_arg_0=1, var_21_arg_1=15, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_23=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=1, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=0, var_26_arg_0=0, var_26_arg_1=1, var_26_arg_2=0, var_28=2, var_28_arg_0=1, var_28_arg_1=1, var_29=0, var_29_arg_0=0, var_29_arg_1=1, var_30=1, var_30_arg_0=1, var_30_arg_1=15, var_31=1, var_31_arg_0=0, var_31_arg_1=1, var_32=2, var_32_arg_0=1, var_32_arg_1=2, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=1, var_34=0, var_34_arg_0=0, var_34_arg_1=1, var_34_arg_2=2, var_4=0, var_7=1] [L60] SORT_1 var_16 = var_16_arg_0 & var_16_arg_1; [L61] EXPR var_16 & mask_SORT_1 VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, next_27_arg_1=0, next_35_arg_1=0, state_5=0, state_8=0, var_10=0, var_10_arg_0=0, var_10_arg_1=0, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=1, var_20=15, var_21=1, var_21_arg_0=1, var_21_arg_1=15, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_23=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=1, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=0, var_26_arg_0=0, var_26_arg_1=1, var_26_arg_2=0, var_28=2, var_28_arg_0=1, var_28_arg_1=1, var_29=0, var_29_arg_0=0, var_29_arg_1=1, var_30=1, var_30_arg_0=1, var_30_arg_1=15, var_31=1, var_31_arg_0=0, var_31_arg_1=1, var_32=2, var_32_arg_0=1, var_32_arg_1=2, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=1, var_34=0, var_34_arg_0=0, var_34_arg_1=1, var_34_arg_2=2, var_4=0, var_7=1] [L61] var_16 = var_16 & mask_SORT_1 [L62] SORT_1 bad_17_arg_0 = var_16; [L63] CALL __VERIFIER_assert(!(bad_17_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L63] RET __VERIFIER_assert(!(bad_17_arg_0)) [L65] SORT_3 var_25_arg_0 = state_5; [L66] SORT_3 var_25_arg_1 = state_8; [L67] SORT_1 var_25 = var_25_arg_0 == var_25_arg_1; [L68] SORT_3 var_24_arg_0 = state_5; [L69] SORT_3 var_24_arg_1 = var_7; [L70] SORT_3 var_24 = var_24_arg_0 + var_24_arg_1; [L71] SORT_3 var_19_arg_0 = state_5; [L72] SORT_3 var_19_arg_1 = state_8; [L73] SORT_1 var_19 = var_19_arg_0 > var_19_arg_1; [L74] SORT_3 var_21_arg_0 = state_8; [L75] SORT_3 var_21_arg_1 = var_20; [L76] SORT_1 var_21 = var_21_arg_0 != var_21_arg_1; [L77] SORT_1 var_22_arg_0 = var_19; [L78] SORT_1 var_22_arg_1 = var_21; VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, next_27_arg_1=0, next_35_arg_1=0, state_5=0, state_8=0, var_10=0, var_10_arg_0=0, var_10_arg_1=0, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_20=15, var_21=1, var_21_arg_0=0, var_21_arg_1=15, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_23=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=1, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=1, var_25_arg_0=0, var_25_arg_1=0, var_26=0, var_26_arg_0=0, var_26_arg_1=1, var_26_arg_2=0, var_28=2, var_28_arg_0=1, var_28_arg_1=1, var_29=0, var_29_arg_0=0, var_29_arg_1=1, var_30=1, var_30_arg_0=1, var_30_arg_1=15, var_31=1, var_31_arg_0=0, var_31_arg_1=1, var_32=2, var_32_arg_0=1, var_32_arg_1=2, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=1, var_34=0, var_34_arg_0=0, var_34_arg_1=1, var_34_arg_2=2, var_4=0, var_7=1] [L79] EXPR var_22_arg_0 | var_22_arg_1 VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, next_27_arg_1=0, next_35_arg_1=0, state_5=0, state_8=0, var_10=0, var_10_arg_0=0, var_10_arg_1=0, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_20=15, var_21=1, var_21_arg_0=0, var_21_arg_1=15, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_23=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=1, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=1, var_25_arg_0=0, var_25_arg_1=0, var_26=0, var_26_arg_0=0, var_26_arg_1=1, var_26_arg_2=0, var_28=2, var_28_arg_0=1, var_28_arg_1=1, var_29=0, var_29_arg_0=0, var_29_arg_1=1, var_30=1, var_30_arg_0=1, var_30_arg_1=15, var_31=1, var_31_arg_0=0, var_31_arg_1=1, var_32=2, var_32_arg_0=1, var_32_arg_1=2, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=1, var_34=0, var_34_arg_0=0, var_34_arg_1=1, var_34_arg_2=2, var_4=0, var_7=1] [L79] SORT_1 var_22 = var_22_arg_0 | var_22_arg_1; [L80] EXPR var_22 & mask_SORT_1 VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, next_27_arg_1=0, next_35_arg_1=0, state_5=0, state_8=0, var_10=0, var_10_arg_0=0, var_10_arg_1=0, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_20=15, var_21=1, var_21_arg_0=0, var_21_arg_1=15, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_23=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=1, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=1, var_25_arg_0=0, var_25_arg_1=0, var_26=0, var_26_arg_0=0, var_26_arg_1=1, var_26_arg_2=0, var_28=2, var_28_arg_0=1, var_28_arg_1=1, var_29=0, var_29_arg_0=0, var_29_arg_1=1, var_30=1, var_30_arg_0=1, var_30_arg_1=15, var_31=1, var_31_arg_0=0, var_31_arg_1=1, var_32=2, var_32_arg_0=1, var_32_arg_1=2, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=1, var_34=0, var_34_arg_0=0, var_34_arg_1=1, var_34_arg_2=2, var_4=0, var_7=1] [L80] var_22 = var_22 & mask_SORT_1 [L81] SORT_1 var_23_arg_0 = var_22; [L82] SORT_3 var_23_arg_1 = state_5; [L83] SORT_3 var_23_arg_2 = state_8; [L84] SORT_3 var_23 = var_23_arg_0 ? var_23_arg_1 : var_23_arg_2; [L85] SORT_1 var_26_arg_0 = var_25; [L86] SORT_3 var_26_arg_1 = var_24; [L87] SORT_3 var_26_arg_2 = var_23; [L88] SORT_3 var_26 = var_26_arg_0 ? var_26_arg_1 : var_26_arg_2; VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, next_27_arg_1=0, next_35_arg_1=0, state_5=0, state_8=0, var_10=0, var_10_arg_0=0, var_10_arg_1=0, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_20=15, var_21=1, var_21_arg_0=0, var_21_arg_1=15, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_23=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=0, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=1, var_25_arg_0=0, var_25_arg_1=0, var_26=1, var_26_arg_0=1, var_26_arg_1=1, var_26_arg_2=0, var_28=2, var_28_arg_0=1, var_28_arg_1=1, var_29=0, var_29_arg_0=0, var_29_arg_1=1, var_30=1, var_30_arg_0=1, var_30_arg_1=15, var_31=1, var_31_arg_0=0, var_31_arg_1=1, var_32=2, var_32_arg_0=1, var_32_arg_1=2, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=1, var_34=0, var_34_arg_0=0, var_34_arg_1=1, var_34_arg_2=2, var_4=0, var_7=1] [L89] EXPR var_26 & mask_SORT_3 VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, next_27_arg_1=0, next_35_arg_1=0, state_5=0, state_8=0, var_10=0, var_10_arg_0=0, var_10_arg_1=0, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_20=15, var_21=1, var_21_arg_0=0, var_21_arg_1=15, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_23=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=0, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=1, var_25_arg_0=0, var_25_arg_1=0, var_26=1, var_26_arg_0=1, var_26_arg_1=1, var_26_arg_2=0, var_28=2, var_28_arg_0=1, var_28_arg_1=1, var_29=0, var_29_arg_0=0, var_29_arg_1=1, var_30=1, var_30_arg_0=1, var_30_arg_1=15, var_31=1, var_31_arg_0=0, var_31_arg_1=1, var_32=2, var_32_arg_0=1, var_32_arg_1=2, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=1, var_34=0, var_34_arg_0=0, var_34_arg_1=1, var_34_arg_2=2, var_4=0, var_7=1] [L89] var_26 = var_26 & mask_SORT_3 [L90] SORT_3 next_27_arg_1 = var_26; [L91] SORT_3 var_33_arg_0 = state_5; [L92] SORT_3 var_33_arg_1 = state_8; [L93] SORT_1 var_33 = var_33_arg_0 > var_33_arg_1; [L94] SORT_3 var_29_arg_0 = state_5; [L95] SORT_3 var_29_arg_1 = state_8; [L96] SORT_1 var_29 = var_29_arg_0 == var_29_arg_1; [L97] SORT_3 var_30_arg_0 = state_8; [L98] SORT_3 var_30_arg_1 = var_20; [L99] SORT_1 var_30 = var_30_arg_0 != var_30_arg_1; [L100] SORT_1 var_31_arg_0 = var_29; [L101] SORT_1 var_31_arg_1 = var_30; VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, next_27_arg_1=1, next_35_arg_1=0, state_5=0, state_8=0, var_10=0, var_10_arg_0=0, var_10_arg_1=0, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_20=15, var_21=1, var_21_arg_0=0, var_21_arg_1=15, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_23=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=0, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=1, var_25_arg_0=0, var_25_arg_1=0, var_26=1, var_26_arg_0=1, var_26_arg_1=1, var_26_arg_2=0, var_28=2, var_28_arg_0=1, var_28_arg_1=1, var_29=1, var_29_arg_0=0, var_29_arg_1=0, var_30=1, var_30_arg_0=0, var_30_arg_1=15, var_31=1, var_31_arg_0=1, var_31_arg_1=1, var_32=2, var_32_arg_0=1, var_32_arg_1=2, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_34=0, var_34_arg_0=0, var_34_arg_1=1, var_34_arg_2=2, var_4=0, var_7=1] [L102] EXPR var_31_arg_0 | var_31_arg_1 VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, next_27_arg_1=1, next_35_arg_1=0, state_5=0, state_8=0, var_10=0, var_10_arg_0=0, var_10_arg_1=0, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_20=15, var_21=1, var_21_arg_0=0, var_21_arg_1=15, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_23=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=0, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=1, var_25_arg_0=0, var_25_arg_1=0, var_26=1, var_26_arg_0=1, var_26_arg_1=1, var_26_arg_2=0, var_28=2, var_28_arg_0=1, var_28_arg_1=1, var_29=1, var_29_arg_0=0, var_29_arg_1=0, var_30=1, var_30_arg_0=0, var_30_arg_1=15, var_31=1, var_31_arg_0=1, var_31_arg_1=1, var_32=2, var_32_arg_0=1, var_32_arg_1=2, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_34=0, var_34_arg_0=0, var_34_arg_1=1, var_34_arg_2=2, var_4=0, var_7=1] [L102] SORT_1 var_31 = var_31_arg_0 | var_31_arg_1; [L103] EXPR var_31 & mask_SORT_1 VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, next_27_arg_1=1, next_35_arg_1=0, state_5=0, state_8=0, var_10=0, var_10_arg_0=0, var_10_arg_1=0, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_20=15, var_21=1, var_21_arg_0=0, var_21_arg_1=15, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_23=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=0, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=1, var_25_arg_0=0, var_25_arg_1=0, var_26=1, var_26_arg_0=1, var_26_arg_1=1, var_26_arg_2=0, var_28=2, var_28_arg_0=1, var_28_arg_1=1, var_29=1, var_29_arg_0=0, var_29_arg_1=0, var_30=1, var_30_arg_0=0, var_30_arg_1=15, var_31=1, var_31_arg_0=1, var_31_arg_1=1, var_32=2, var_32_arg_0=1, var_32_arg_1=2, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_34=0, var_34_arg_0=0, var_34_arg_1=1, var_34_arg_2=2, var_4=0, var_7=1] [L103] var_31 = var_31 & mask_SORT_1 [L104] SORT_3 var_28_arg_0 = state_8; [L105] SORT_3 var_28_arg_1 = var_7; [L106] SORT_3 var_28 = var_28_arg_0 + var_28_arg_1; [L107] SORT_1 var_32_arg_0 = var_31; [L108] SORT_3 var_32_arg_1 = var_28; [L109] SORT_3 var_32_arg_2 = state_5; [L110] SORT_3 var_32 = var_32_arg_0 ? var_32_arg_1 : var_32_arg_2; [L111] SORT_1 var_34_arg_0 = var_33; [L112] SORT_3 var_34_arg_1 = state_8; [L113] SORT_3 var_34_arg_2 = var_32; [L114] SORT_3 var_34 = var_34_arg_0 ? var_34_arg_1 : var_34_arg_2; VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, next_27_arg_1=1, next_35_arg_1=0, state_5=0, state_8=0, var_10=0, var_10_arg_0=0, var_10_arg_1=0, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_20=15, var_21=1, var_21_arg_0=0, var_21_arg_1=15, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_23=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=0, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=1, var_25_arg_0=0, var_25_arg_1=0, var_26=1, var_26_arg_0=1, var_26_arg_1=1, var_26_arg_2=0, var_28=1, var_28_arg_0=0, var_28_arg_1=1, var_29=1, var_29_arg_0=0, var_29_arg_1=0, var_30=1, var_30_arg_0=0, var_30_arg_1=15, var_31=1, var_31_arg_0=1, var_31_arg_1=1, var_32=1, var_32_arg_0=1, var_32_arg_1=1, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_34=1, var_34_arg_0=0, var_34_arg_1=0, var_34_arg_2=1, var_4=0, var_7=1] [L115] EXPR var_34 & mask_SORT_3 VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, next_27_arg_1=1, next_35_arg_1=0, state_5=0, state_8=0, var_10=0, var_10_arg_0=0, var_10_arg_1=0, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_20=15, var_21=1, var_21_arg_0=0, var_21_arg_1=15, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_23=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=0, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=1, var_25_arg_0=0, var_25_arg_1=0, var_26=1, var_26_arg_0=1, var_26_arg_1=1, var_26_arg_2=0, var_28=1, var_28_arg_0=0, var_28_arg_1=1, var_29=1, var_29_arg_0=0, var_29_arg_1=0, var_30=1, var_30_arg_0=0, var_30_arg_1=15, var_31=1, var_31_arg_0=1, var_31_arg_1=1, var_32=1, var_32_arg_0=1, var_32_arg_1=1, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_34=1, var_34_arg_0=0, var_34_arg_1=0, var_34_arg_2=1, var_4=0, var_7=1] [L115] var_34 = var_34 & mask_SORT_3 [L116] SORT_3 next_35_arg_1 = var_34; [L118] state_5 = next_27_arg_1 [L119] state_8 = next_35_arg_1 VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, next_27_arg_1=1, next_35_arg_1=0, state_5=1, state_8=0, var_10=0, var_10_arg_0=0, var_10_arg_1=0, var_11=255, var_11_arg_0=0, var_14=1, var_15=0, var_15_arg_0=255, var_16=0, var_16_arg_0=1, var_16_arg_1=0, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_20=15, var_21=1, var_21_arg_0=0, var_21_arg_1=15, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_23=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=0, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=1, var_25_arg_0=0, var_25_arg_1=0, var_26=1, var_26_arg_0=1, var_26_arg_1=1, var_26_arg_2=0, var_28=1, var_28_arg_0=0, var_28_arg_1=1, var_29=1, var_29_arg_0=0, var_29_arg_1=0, var_30=1, var_30_arg_0=0, var_30_arg_1=15, var_31=1, var_31_arg_0=1, var_31_arg_1=1, var_32=1, var_32_arg_0=1, var_32_arg_1=1, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_34=0, var_34_arg_0=0, var_34_arg_1=0, var_34_arg_2=1, var_4=0, var_7=1] [L48] input_2 = __VERIFIER_nondet_uchar() [L51] SORT_3 var_10_arg_0 = state_5; [L52] SORT_3 var_10_arg_1 = state_8; [L53] SORT_1 var_10 = var_10_arg_0 > var_10_arg_1; [L54] SORT_1 var_11_arg_0 = var_10; [L55] SORT_1 var_11 = ~var_11_arg_0; [L56] SORT_1 var_15_arg_0 = var_11; [L57] SORT_1 var_15 = ~var_15_arg_0; [L58] SORT_1 var_16_arg_0 = var_14; [L59] SORT_1 var_16_arg_1 = var_15; VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, next_27_arg_1=1, next_35_arg_1=0, state_5=1, state_8=0, var_10=1, var_10_arg_0=1, var_10_arg_1=0, var_11=254, var_11_arg_0=1, var_14=1, var_15=1, var_15_arg_0=254, var_16=0, var_16_arg_0=1, var_16_arg_1=1, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_20=15, var_21=1, var_21_arg_0=0, var_21_arg_1=15, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_23=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=0, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=1, var_25_arg_0=0, var_25_arg_1=0, var_26=1, var_26_arg_0=1, var_26_arg_1=1, var_26_arg_2=0, var_28=1, var_28_arg_0=0, var_28_arg_1=1, var_29=1, var_29_arg_0=0, var_29_arg_1=0, var_30=1, var_30_arg_0=0, var_30_arg_1=15, var_31=1, var_31_arg_0=1, var_31_arg_1=1, var_32=1, var_32_arg_0=1, var_32_arg_1=1, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_34=0, var_34_arg_0=0, var_34_arg_1=0, var_34_arg_2=1, var_4=0, var_7=1] [L60] EXPR var_16_arg_0 & var_16_arg_1 VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, next_27_arg_1=1, next_35_arg_1=0, state_5=1, state_8=0, var_10=1, var_10_arg_0=1, var_10_arg_1=0, var_11=254, var_11_arg_0=1, var_14=1, var_15=1, var_15_arg_0=254, var_16=0, var_16_arg_0=1, var_16_arg_1=1, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_20=15, var_21=1, var_21_arg_0=0, var_21_arg_1=15, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_23=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=0, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=1, var_25_arg_0=0, var_25_arg_1=0, var_26=1, var_26_arg_0=1, var_26_arg_1=1, var_26_arg_2=0, var_28=1, var_28_arg_0=0, var_28_arg_1=1, var_29=1, var_29_arg_0=0, var_29_arg_1=0, var_30=1, var_30_arg_0=0, var_30_arg_1=15, var_31=1, var_31_arg_0=1, var_31_arg_1=1, var_32=1, var_32_arg_0=1, var_32_arg_1=1, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_34=0, var_34_arg_0=0, var_34_arg_1=0, var_34_arg_2=1, var_4=0, var_7=1] [L60] SORT_1 var_16 = var_16_arg_0 & var_16_arg_1; [L61] EXPR var_16 & mask_SORT_1 VAL [bad_17_arg_0=0, init_6_arg_1=0, init_9_arg_1=1, mask_SORT_1=1, mask_SORT_3=15, msb_SORT_1=1, msb_SORT_3=8, next_27_arg_1=1, next_35_arg_1=0, state_5=1, state_8=0, var_10=1, var_10_arg_0=1, var_10_arg_1=0, var_11=254, var_11_arg_0=1, var_14=1, var_15=1, var_15_arg_0=254, var_16=1, var_16_arg_0=1, var_16_arg_1=1, var_19=0, var_19_arg_0=0, var_19_arg_1=0, var_20=15, var_21=1, var_21_arg_0=0, var_21_arg_1=15, var_22=1, var_22_arg_0=0, var_22_arg_1=1, var_23=0, var_23_arg_0=1, var_23_arg_1=0, var_23_arg_2=0, var_24=1, var_24_arg_0=0, var_24_arg_1=1, var_25=1, var_25_arg_0=0, var_25_arg_1=0, var_26=1, var_26_arg_0=1, var_26_arg_1=1, var_26_arg_2=0, var_28=1, var_28_arg_0=0, var_28_arg_1=1, var_29=1, var_29_arg_0=0, var_29_arg_1=0, var_30=1, var_30_arg_0=0, var_30_arg_1=15, var_31=1, var_31_arg_0=1, var_31_arg_1=1, var_32=1, var_32_arg_0=1, var_32_arg_1=1, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_34=0, var_34_arg_0=0, var_34_arg_1=0, var_34_arg_2=1, var_4=0, var_7=1] [L61] var_16 = var_16 & mask_SORT_1 [L62] SORT_1 bad_17_arg_0 = var_16; [L63] CALL __VERIFIER_assert(!(bad_17_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 55.0s, OverallIterations: 18, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 29.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8405 SdHoareTripleChecker+Valid, 7.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8405 mSDsluCounter, 5593 SdHoareTripleChecker+Invalid, 6.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4824 mSDsCounter, 307 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9882 IncrementalHoareTripleChecker+Invalid, 10189 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 307 mSolverCounterUnsat, 769 mSDtfsCounter, 9882 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1192 GetRequests, 515 SyntacticMatches, 1 SemanticMatches, 676 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19592 ImplicationChecksByTransitivity, 27.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=403occurred in iteration=17, InterpolantAutomatonStates: 487, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 17 MinimizatonAttempts, 1807 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 20.7s InterpolantComputationTime, 1072 NumberOfCodeBlocks, 1072 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 1270 ConstructedInterpolants, 0 QuantifiedInterpolants, 18006 SizeOfPredicates, 190 NumberOfNonLiveVariables, 2692 ConjunctsInSsa, 556 ConjunctsInUnsatCore, 29 InterpolantComputations, 12 PerfectInterpolantSequences, 357/575 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-29 01:22:38,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/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_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example_v.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/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 fb8ca5e5ce2ed40fdd0ad3d69b0bd96c83a6daf11d842e9766da8dc50e36012a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:22:40,331 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:22:40,397 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-11-29 01:22:40,401 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:22:40,402 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:22:40,435 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:22:40,436 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:22:40,436 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:22:40,437 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:22:40,438 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:22:40,438 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:22:40,439 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:22:40,440 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:22:40,440 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:22:40,441 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:22:40,442 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:22:40,442 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:22:40,443 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:22:40,443 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:22:40,444 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:22:40,445 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:22:40,445 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 01:22:40,446 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 01:22:40,446 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 01:22:40,447 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:22:40,447 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:22:40,447 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:22:40,448 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:22:40,448 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:22:40,449 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:22:40,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:22:40,450 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:22:40,450 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:22:40,450 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:22:40,450 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 01:22:40,451 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 01:22:40,451 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:22:40,451 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:22:40,451 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:22:40,452 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:22:40,452 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:22:40,452 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 01:22:40,452 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_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb8ca5e5ce2ed40fdd0ad3d69b0bd96c83a6daf11d842e9766da8dc50e36012a [2023-11-29 01:22:40,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:22:40,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:22:40,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:22:40,749 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:22:40,749 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:22:40,751 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example_v.c [2023-11-29 01:22:43,578 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:22:43,774 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:22:43,775 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example_v.c [2023-11-29 01:22:43,783 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/data/02025d8fb/105640660da84b609cf4a17728cb3968/FLAG30c16a684 [2023-11-29 01:22:43,799 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/data/02025d8fb/105640660da84b609cf4a17728cb3968 [2023-11-29 01:22:43,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:22:43,803 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:22:43,804 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:22:43,805 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:22:43,810 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:22:43,810 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:22:43" (1/1) ... [2023-11-29 01:22:43,812 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4541e829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:43, skipping insertion in model container [2023-11-29 01:22:43,812 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:22:43" (1/1) ... [2023-11-29 01:22:43,853 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:22:44,004 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_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example_v.c[1255,1268] [2023-11-29 01:22:44,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:22:44,059 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:22:44,072 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_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cav14_example_v.c[1255,1268] [2023-11-29 01:22:44,097 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:22:44,114 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:22:44,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:44 WrapperNode [2023-11-29 01:22:44,115 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:22:44,116 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:22:44,116 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:22:44,116 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:22:44,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:44" (1/1) ... [2023-11-29 01:22:44,134 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:44" (1/1) ... [2023-11-29 01:22:44,159 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 110 [2023-11-29 01:22:44,159 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:22:44,160 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:22:44,161 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:22:44,161 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:22:44,172 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:44" (1/1) ... [2023-11-29 01:22:44,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:44" (1/1) ... [2023-11-29 01:22:44,177 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:44" (1/1) ... [2023-11-29 01:22:44,191 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 01:22:44,191 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:44" (1/1) ... [2023-11-29 01:22:44,192 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:44" (1/1) ... [2023-11-29 01:22:44,199 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:44" (1/1) ... [2023-11-29 01:22:44,202 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:44" (1/1) ... [2023-11-29 01:22:44,204 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:44" (1/1) ... [2023-11-29 01:22:44,205 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:44" (1/1) ... [2023-11-29 01:22:44,209 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:22:44,210 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:22:44,210 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:22:44,210 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:22:44,211 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:44" (1/1) ... [2023-11-29 01:22:44,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:22:44,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:22:44,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:22:44,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:22:44,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:22:44,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 01:22:44,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:22:44,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:22:44,371 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:22:44,374 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:22:44,555 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:22:44,584 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:22:44,584 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:22:44,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:22:44 BoogieIcfgContainer [2023-11-29 01:22:44,585 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:22:44,588 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:22:44,588 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:22:44,591 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:22:44,591 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:22:43" (1/3) ... [2023-11-29 01:22:44,592 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f64a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:22:44, skipping insertion in model container [2023-11-29 01:22:44,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:22:44" (2/3) ... [2023-11-29 01:22:44,592 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f64a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:22:44, skipping insertion in model container [2023-11-29 01:22:44,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:22:44" (3/3) ... [2023-11-29 01:22:44,594 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cav14_example_v.c [2023-11-29 01:22:44,613 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:22:44,613 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:22:44,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:22:44,665 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;@63fe2d65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:22:44,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:22:44,669 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:44,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 01:22:44,675 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:22:44,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 01:22:44,676 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:22:44,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:44,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-11-29 01:22:44,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:22:44,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477463082] [2023-11-29 01:22:44,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:44,695 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:22:44,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:22:44,698 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:22:44,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 01:22:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:44,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 01:22:44,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:22:45,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:45,017 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:22:45,018 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:22:45,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477463082] [2023-11-29 01:22:45,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477463082] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:22:45,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:22:45,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:22:45,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921023370] [2023-11-29 01:22:45,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:22:45,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:22:45,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:22:45,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:22:45,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:22:45,055 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:45,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:22:45,111 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-11-29 01:22:45,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:22:45,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2023-11-29 01:22:45,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:22:45,121 INFO L225 Difference]: With dead ends: 16 [2023-11-29 01:22:45,121 INFO L226 Difference]: Without dead ends: 9 [2023-11-29 01:22:45,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 01:22:45,127 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:22:45,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:22:45,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-29 01:22:45,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-11-29 01:22:45,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:45,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-29 01:22:45,158 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-11-29 01:22:45,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:22:45,158 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-29 01:22:45,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:45,159 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-29 01:22:45,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 01:22:45,159 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:22:45,159 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-29 01:22:45,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:22:45,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:22:45,360 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:22:45,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:45,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-11-29 01:22:45,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:22:45,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131545606] [2023-11-29 01:22:45,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:22:45,363 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:22:45,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:22:45,364 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:22:45,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 01:22:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:22:45,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 01:22:45,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:22:45,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:45,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:22:46,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:46,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:22:46,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131545606] [2023-11-29 01:22:46,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131545606] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:22:46,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:22:46,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-29 01:22:46,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578198685] [2023-11-29 01:22:46,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:22:46,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:22:46,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:22:46,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:22:46,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:22:46,563 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:46,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:22:46,649 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-11-29 01:22:46,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:22:46,650 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 01:22:46,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:22:46,650 INFO L225 Difference]: With dead ends: 14 [2023-11-29 01:22:46,651 INFO L226 Difference]: Without dead ends: 12 [2023-11-29 01:22:46,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:22:46,652 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:22:46,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 11 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:22:46,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-29 01:22:46,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-11-29 01:22:46,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:46,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-11-29 01:22:46,657 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-11-29 01:22:46,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:22:46,657 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-11-29 01:22:46,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:22:46,658 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-11-29 01:22:46,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 01:22:46,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:22:46,659 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-11-29 01:22:46,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 01:22:46,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:22:46,860 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:22:46,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:22:46,860 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2023-11-29 01:22:46,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:22:46,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863304440] [2023-11-29 01:22:46,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:22:46,862 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:22:46,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:22:46,863 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:22:46,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-29 01:22:47,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:22:47,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:22:47,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 71 conjunts are in the unsatisfiable core [2023-11-29 01:22:47,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:22:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:22:47,565 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:23:04,392 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:23:04,392 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 01:23:04,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863304440] [2023-11-29 01:23:04,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863304440] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:23:04,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:23:04,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-29 01:23:04,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046147411] [2023-11-29 01:23:04,393 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:23:04,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:23:04,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 01:23:04,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:23:04,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:23:04,396 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:05,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:05,236 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2023-11-29 01:23:05,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 01:23:05,237 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-29 01:23:05,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:05,238 INFO L225 Difference]: With dead ends: 20 [2023-11-29 01:23:05,238 INFO L226 Difference]: Without dead ends: 18 [2023-11-29 01:23:05,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:23:05,240 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 16 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:05,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 10 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:23:05,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-29 01:23:05,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2023-11-29 01:23:05,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:05,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2023-11-29 01:23:05,245 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2023-11-29 01:23:05,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:05,245 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2023-11-29 01:23:05,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:23:05,246 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2023-11-29 01:23:05,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 01:23:05,246 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:05,246 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1] [2023-11-29 01:23:05,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 01:23:05,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:23:05,447 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:23:05,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:05,448 INFO L85 PathProgramCache]: Analyzing trace with hash -310375345, now seen corresponding path program 3 times [2023-11-29 01:23:05,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 01:23:05,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [631860502] [2023-11-29 01:23:05,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:23:05,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 01:23:05,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 01:23:05,449 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 01:23:05,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2928f6c6-9be8-43b9-8615-4ee7cf5b485f/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-29 01:23:05,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-29 01:23:05,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:23:05,651 WARN L260 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 172 conjunts are in the unsatisfiable core [2023-11-29 01:23:05,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:06,871 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:23:06,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:23:36,268 WARN L293 SmtUtils]: Spent 9.22s on a formula simplification. DAG size of input: 745 DAG size of output: 679 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:23:53,932 WARN L293 SmtUtils]: Spent 5.57s on a formula simplification that was a NOOP. DAG size: 681 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:24:11,776 WARN L293 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 690 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)